View Full Version : Aluminum 450r 3 wheeler.

Jason Hall
10-11-2007, 07:29 AM
Well I've been kickin this idea around for a while now. I finally won a frame real cheap. It will take alot of time, but I want to make it work. Even though this will be a LONG project, It should turn out sweet I hope. My plan Is to keep the ride height as low as possable. I'm thinking I will have to raise the engine cradle some, that could cause clearance problems with the gas tank. I will modifi a crf swinger, but will be using a trx450 rear shock. That should make it possable to use a 350x airbox under the seat.I hope to have a tank soon so I can get started. If I have tank clearance problems then I will use a different tank.

I have a question for you aluminum polishing guys though. The stock crf plastic rubs grooves In the top frame tubes. Do you guys think If I tig weld the groove up & sand them flat that you will be able to see the spot still? I have welded swingarms before & sometimes you can see that the aluminum filler rod Is not the same shade when sanded. If you guys think the spots would show, I will have to use the stock shrouds to keep It covered up.



10-11-2007, 10:15 AM
hmm this would be very interesting when done... who else better to do so then you ;) You've had wicked projects already here's another!

What do you intend on using for the front end? That rake make look a bit high so.

Jason Hall
10-11-2007, 05:51 PM
What do you intend on using for the front end? That rake make look a bit high so.[/QUOTE]

I've been doing alot of thinking about where to start. So I think once I raise the engine cradle & re-mount the engine, I will put the swingarm on. Then set the frame height (ground clearance) where I want It. Then I can figure out how long the forks will need to be. It will for sure have Inverted forks, with aluminum tripples. I might have to lean the frame forward some, then build some rake Into the tripples. I really don't know how It will work until I get a gas tank & get started on It.

10-14-2007, 11:40 PM
its an awesome idea and cant wait to see the progress.

10-14-2007, 11:46 PM
hmm this would be very interesting when done... who else better to do so then you You've had wicked projects already here's another!

I agree!!! I cant wait to see the finished product!!!!

-Nick :TrikesOwn

10-17-2007, 07:11 PM
Jason are you dismanteling the 450 with the 350 chasis ? You doing a bolt on sub-frame? And what tank you planning on using,if all goes well? Make sure you keep all informed !

Jason Hall
10-17-2007, 08:50 PM
Roger, I won a stock crf tank a couple days ago, along with a crf swinger. I plan on using the stock tank. If I don't have room to move the engine up to gain ground clearance, then a custom aluminum tank will be my only choice. I do plan on robbing the heart from the 350x frame, as long as all goes well. Yes I also plan on a bolt on aluminum sub frame. I really don't want to rush on this project, because It Is a difficult one.

Derrick Adams
10-17-2007, 09:13 PM
I think I would start by getting some actual measurements from a complete dirtbike. Frame to ground, then front/rear axle to ground. Then you can determine how much you need to section from the frame. Assuming you want your unloaded frame clearance around 11-12" like a standard 250R.

Jason Hall
10-17-2007, 09:24 PM
Derrick, I already measured the crf's they have close to 12" of ground clearance. I have the frame all marked where the bottom needs to be. I measured the fork length & figured out how long I want the swinger to be with the frame 12" off the ground. The next step It to determine If I can use the stock tank. Either way, I will cut the bottom of the frame & move It up quite a bit. The forks on my 350x chassis are real close to the right length with the rake & wheelbase set where I like It.

Jason Hall
10-20-2007, 09:24 AM
The swingarms are completly different from the bike to the quad. The bike has no carrier & the wheel fits between the the 2 aluminum tubes. My plan to modifi the bike swingarm Is to use the front section. It will fit the frame & also the engine will fit between the front section of the swinger. I hope to then rebuild the sides & use the rear section (carrier) from a 89 trx 250r swingarm.

10-20-2007, 01:49 PM
Are you doing that to obtain a longer swinger? The 450 Tri-Z you built was a stock 450R swinger correct? and it's a hair shorter?

Jason Hall
10-20-2007, 01:59 PM
I will make the swingarm the same length as a stock 06 & up trx 450 19.5". I don't want the swinger long because I will use this machine as a eveyday rider / MX racer. As I said before, I'm using the motorcycle swinger because It fits the frame & engine correctly. I will just have to mod the sides & weld a rear carrier section on.

The Tri-Z was a stock 19.5" trx450r swinger. It Is really close to the same length as a stock Z swingarm.

11-09-2007, 02:10 PM
any progress?

Bryan Raffa
11-19-2007, 10:32 PM
how's this comeing jason?

Jason Hall
11-20-2007, 08:20 AM
Well I'm still gathering parts. It's looking like I will use the front section of the bike swinger and a stock 450 bike shock. I really wanted to use a trx 450 rear shock, because I have a good one :mad: I modified the head on the engine I plan on using. This will make It very difficult to use the bike shock set up, because the carb boot will run straight Into the shock. I might have to change back to a stock crf head to make the air box fit. I sure have'nt given up, I'm just a little frustrated because I can't make thing's fit the rear suspension like I planned. One change leads to many others.

Here Is the aluminum for the tripples & a real nice set of forks I will be using. I also have the swinger & tank. It's hunting season, so my machine shop buddy does'nt have much time to spare.

Jason Hall
11-24-2007, 05:49 PM
Good thing the wife loves me!!! Made a little progress with all my parts In the front room of the house today. Well I machined everything In the garage & brought It Inside to assemble & measure where It's warm:rolleyes: . I fitted the swingarm, and also got the rake and wheelbase set. I'll be using stock length Inverted dirt bike forks. It should work out to have 12" of ground clearance when the suspension Is hanging. The seat height will be set at about 29" (same as a stock trx250r). I'm still planning on building an aluminum tank that will be higher than the stock cfr450 tank. That will give me a chance to build a sweet seat up the back of the tank. Now to just get a nice long travel rear shock setup for a trx 450. It turns out I won't have to cut the frame other than removing part of the Origional rear shock mount.

11-25-2007, 09:29 AM
I see your making some headway on the project,and making it into the house is a deffinate plus..A few ??'s,I assume that the frame setting on the crate is a pretty good guesstimate of where the frame will actually build.Now by setting that,did it give you the rake your wanting ,or did you machine the tree? And I see more clearly what we talked about with the rear shock,How much do you have to lower the shock mount,to get that all 100% established?? Looking good ..

Jason Hall
11-25-2007, 10:02 AM
Roger, It has alot deg of rake now, that should be a little less once I'm on It. I figure If the bike drops 3" with me sitting on It I'll have a good 9" ground clearance. The rear shock mount will probly be about 4" lower than the bike mount was. I'm lookin at running an airbox under the seat, so dropping the rear shock will leave room for the carb boot to go overtop of the shock. Thats why I wanted to use the TRX swingarm & shock so bad.

11-28-2007, 02:47 PM
I know the trx 450 shock on my 250r is very stiff, i assume its geometry related and has to do with where it mounts. Maybee that will be the same on this? Perhaps the bike shock is a better candidate? Prob has more travel than the trx also?

Jason Hall
11-28-2007, 09:34 PM
I will be using an atc/trx 250r shock to build the bike. As soon as money will allow, I will purchas an aftermarket 250r long travel shock. I want It setup soft to match the front forks. I know what your talking about, my 450/350x was stupid stiff with a stock 450 shock.

11-29-2007, 10:56 AM
I was reading the posts about your project and I read the statement you wrote that one change makes other changes. That is so true when you are fabricating something. I built a pro street 55 chevy truck. I was fabricating the radiator suport and one little change in the support design changed everything and caused nightmares lol. Good luck in your build Glenn O.

Jason Hall
12-14-2007, 07:18 PM
A little more progress.

12-16-2007, 01:55 AM
wow:drool: :drool: :drool: that looks awesome man, I'm always very impressed with your work, keep it up:TrikesOwn

200x newby
02-17-2008, 12:00 PM
Any updates?

Jason Hall
02-17-2008, 03:02 PM
Still gathering part guys. I did modify the tripples a little to shorten the wheel base. I just bought a 18.5" Axis rear shock. I'll be cutting the origional top shock mount off & adding a new one where It's needed for the new shock setup. I modded the tripples so I can use a 06-08 TRX swinger. I sat a stock trx450r seat up to the frame so you can get an Idea what that will be like. Next I'll be in the market for a trx450 rear subframe. I will be shortening up the front of the trx seat pan to leave room for the gas tank. A little at a time and I'll get It done.

200x newby
02-17-2008, 03:42 PM
looking good! thats gonna be one bad *Edited**Edited**Edited**Edited**Edited* ride!

The Goat
03-17-2008, 09:19 AM
any more pics or work?

Jason Hall
03-18-2008, 08:20 PM
The Goat, I'm waiting for my rear shock to get back from Custom Axis. I decided to use a CR-500 shock. It will easily have 12" of rear wheel travel using 06-08 TRX450 linkage. The shock needed to be rebuilt, so I figured they might as well revalve It for the TRX450 linkage. Once I have the shock back, I can build the top mount. With the shock mounted It will be rolling, and the rest of the build should go a bit faster. I did pick up a good TRX450 rear sub frame, but can't make that fit until the shock mounting Is done.

03-21-2008, 08:57 AM
this is a sweet project

Tri-Z 250
03-21-2008, 10:02 AM
If you need to I believe Dr. D makes a lowering kit to drop the radiators just a bit.

03-21-2008, 10:05 AM
Jason, I got the rear fender off my ATCR sitting here. You are more than welcome to it. I know you will want a new one, but you can butcher this as needed and not worry bout it. I can bring it to the Rumble or ship it to you. I still have the footpegs as well. I think I have some more small odds and ends from the ATCR that I didn't get rid of. I'll look around and see what I got that may be of use. Gimme a call.

Jason Hall
03-21-2008, 05:04 PM
Tri-Z 250, The radiator's work pretty sweet In the stock location. Thanks for the heads up though.

Speedbump, I don't think I can make It to the rumble. I will try, but It's not lookin good right now. I would like to have the fenders to get everything set where I want It. I'll give ya a call soon.

03-22-2008, 12:51 AM
kk, talk to you later.

Derrick Adams
03-22-2008, 08:51 AM
Guys, I can transport the fenders for you. I'll be at the rumble and headed to jasons after that anyhow with my 200X engine. (maybe i'll see you at the detroit supercross?) Anyhow, it works!

Jason Hall
03-22-2008, 09:21 AM
Sounds good Derrick.

03-22-2008, 11:59 AM
Cool, I'll get out and dig around.

03-25-2008, 12:01 AM
hey i was just wondering if anyone had any ideas on converting a honda atc 200m into a bike what would i have to look out for? thnx

Jason Hall
06-21-2008, 09:28 AM
Well my winter project turned into a summer project :lol: Here's 2 of the latest pic's of the 450. I have the engine In and the swinger fitted. I will start building the top shock mount this weekend. I can't believe It, but It should be rolling soon.



06-21-2008, 09:51 AM
Yeah I know how a project can go on just a little longer than expected,lol ,but your deffinatly making major headway,and I bet you have more done than the pic's show.Question : Is that the modded subframe ,ready to accept atv plastic's and what not ?? I see on the cradle just above the swinger bolt an extra gusseted mount @ the rubber grommet,it look's.I am eagar too see it in person,it's gonna look sick Jason..

Jason Hall
06-21-2008, 10:38 AM
Roger, In the first picture I had the swinger just sitting between the frame rails. In the second pic I have the swinger fitted correctly. The subframe is from a 05 TRX450R. Once I get the suspension done I will modifi the subframe slightly to fit the crf frame correctly. Then stock 450r rear fenders will bolt right on.

Derrick Adams
06-21-2008, 01:36 PM
Looks like you may have a big problem with the chain rubbing on the top of the slider in front. Angle of the swinger looks good. How are you going to get around that?

Louis Mielke
06-21-2008, 01:46 PM
I'm curious if it will be as dramatic of an angle on the chain once the suspension is loaded. I know on my 500 the chain looks like it'll saw through the swinger unloaded, especially since the quad slider is so much thicker than the bike slider. Once its loaded it kinda levels out and works ok.

Probably won't know till the shock is mount in its finally location and he loads the bike.

Jason Hall
06-21-2008, 02:33 PM
Derrick, the suspension Is at It's lowest point like Louis said. I will be trimming some of the meat off the top of the slider, as I said earlier. Louis Is exactly right, the dirt bike has a very thin slider. Once the weight Is on the suspension, It will flatten the chain out quite alot, along with the shaved slider. I fitted the Intake boot over the top of the shock, and It will work out PERFECTLY.

06-21-2008, 03:59 PM
Same way on the 600 conversion also.Weight on the rear end solve's the problem..

06-22-2008, 07:50 AM
so you used a stock trx swinger?

Jason Hall
06-22-2008, 08:48 PM
Yes I used a 07 TRX swingarm.

06-23-2008, 05:16 AM
Looking good Jason!......

Jason Hall
06-23-2008, 05:24 PM
Thanks Gordon, I'm finally getting somewhere with It :beer

Jason Hall
06-24-2008, 09:32 PM
Finally got It off the bench. Now I can start fitting the subframe & shrouds :Bounce :Bounce

Billy Golightly
06-24-2008, 11:19 PM
Dude Jason...leave it that way and finish it. TRIALS TRIKE! Haha it'd be sweet!

06-25-2008, 05:39 AM
Finally got It off the bench. Now I can start fitting the subframe & shrouds :Bounce :Bounce

Looks great Jason, so whats the deal on the front caliper are you going to run it
on the front - right hand side?

Jason Hall
06-25-2008, 12:20 PM
Billy, It does look like a Trials bike for sure. I'm gettin to old to have no seat though :lol:

Gordon, I need to ride It before I decide to run the axle leading or trailing. The bike frame has alot of rake built Into It. That rake makes the wheel base longer than I like. I have learned the hard way with the other bikes I've built that with the extra rake the trailing axle should work out best, I hope :lol: I have also learned that the center to center measurement of the steering stem and fork tubes In the triples affects the rake more than one would Imagine. I will know for sure once the first ride Is possable.

06-25-2008, 06:15 PM
Jason, looking real good. Do I see the footpegs I sent? If so, did they bolt right up? Hoped you could make use of some of the stuff. More pics brutha.

Jason Hall
06-25-2008, 09:56 PM
Yes Speedbump they are your footpegs. I had to grind them thinner (where the pin goes through) to make them fit the 450 frame. The pegs need to go way forward though.

Jason Hall
07-06-2008, 04:39 PM
A couple updated Pic's. The gas tank Is made from cardboard don't laugh, and no It won't hold gas :lol: :lol: I hope to have the aluminum tank done before my rear fenders get here on Wednesday.



07-06-2008, 05:01 PM

Need Any 350x Parts? Lol

Billy Golightly
07-06-2008, 08:31 PM
:drool: looks bad ass Jason! Awesome work as always.

07-07-2008, 02:49 AM
that is one beautiful piece of machinery right there

07-07-2008, 03:45 PM
Wow,,,,looks excellent Jason, can't wait to see the rear plastics fitted.

07-07-2008, 08:23 PM
holy cow man, that thing is turning out absolutely awesome!!!!

Jason Hall
07-07-2008, 08:27 PM
Well thanks guys, glad you like It. Can't wait to see the fenders fitted also.

07-07-2008, 08:58 PM
git it done i wanan ride it

07-07-2008, 09:08 PM
wow!! that will be one nice ridding bike, and a sure trophy winner.

07-07-2008, 09:09 PM
oof!, now that's wicked! now i don't know what i want to build!

07-07-2008, 09:44 PM
so u did use trx 450 swingarm? looks good!

tri-Z ripper
07-13-2008, 06:25 PM
Awesome When You Gonna Make It Production Lol!

Jason Hall
07-13-2008, 10:21 PM
Awesome When You Gonna Make It Production Lol!

Thanks, but I don't plan any kind of production :D


Louis Mielke
07-14-2008, 07:36 AM
That thing is amazing. Its like Honda made those parts and just waited for someone to find the right combination.

07-14-2008, 07:42 AM

07-14-2008, 07:25 PM
That is fricken unreal- you should be very proud to say the least....

07-14-2008, 07:28 PM
:drool: Thats really nice!!

Billy Golightly
07-14-2008, 07:48 PM
Very nice Jason, ride report yet? :)

07-14-2008, 10:33 PM
DAMn jason, that thing is SICK dude!

wanna sell me your other one?

you got some serious skills man, too bad you couldnt just do that full time

Jason Hall
07-15-2008, 08:19 AM
Thanks guys, It's coming along well. Billy, no ride report yet, I'm finishing up the gas tank. I did get the footpegs mounted, I used 400ex pegs then moved them forward some. Got the 450r brake pedal fitted, waiting on the master cylinder to get here :wondering

Kintore, I just can't make myself sell the 350x/450. I will eventually put a crf250 engine In that bike for my oldest boy. Rumor has It we might see the 3leggeddog on that bike at Smith Rd on Labor Day :naughty:

07-15-2008, 08:32 AM
NICE!!!!!!!!!!! real good job man.

07-16-2008, 09:36 AM
wow i like

johnny's X
07-16-2008, 10:45 AM
Another awesome machine rolling out of the halls performance shop.

Kintore.....not a bad idea there! So Jason when are you taking orders?

Billy Golightly
07-16-2008, 01:10 PM
Jason, did you change the rake on the frame any, or is it all done in the clamps?

07-16-2008, 01:25 PM
The most amazing of all the hybrids yet to come out. Great work as usual Jason. Can't wait to see it in person.

Jason Hall
07-16-2008, 10:00 PM
Thanks again guys :beer

Billy, I did'nt cut the frame at all, except the top shock mount. The triple's have no rake built In. The 02-04 CRF frame's have quite a bite of rake built Into them. The 05 & up CRF has alot less rake, better for a supercross track (tight turns). From what I've read the 05 & up frames are twichy at higher speeds. I'm quite sure thats why the 08 crf has a factory steering stabilizer.

Billy Golightly
07-16-2008, 11:31 PM
Very good info to know about the frame differences Jason, thanks!

07-17-2008, 11:38 AM
how hard was this project jason? interested in doing another perhaps?

07-17-2008, 02:26 PM
I just found this thread and want to comment on the awesome job you have done...keep up the great work!

07-17-2008, 10:54 PM
Excellent work! How does the ride feel on this build?

07-18-2008, 12:04 PM
wow dude,very very nice job.I have to say that thing is amazing.you will go down in 3 wheeler history for this chit man.

you would have seen me back on a trike for labor day,but i blew my knee ealry this week.looks like 6 months before i ride again.

07-21-2008, 01:33 AM
That is sweet!

Jason Hall
07-25-2008, 09:30 AM
Getting ready for final assembly. The frame Is finally done. All the gussots and final welding has been done. I made a few adjustments to the steering geometry, because of handling Issue's after the first ride. The bike Is 294 LBS with an empty gas tank. I will have It together and riding It this weekend. I will post up the latest pic's on sunday. Here Is one pic of the lower frame where I added strength for the 400ex foot pegs. :beer


Louis Mielke
07-25-2008, 09:35 AM
Thats some awesome looking aluminum welds Jason! Wanna hear that ride report!

Bad Karma
07-25-2008, 04:00 PM
More detail on the geometry changes? Did you re-position the steering head or something? What handling issues caused you to make the change?

Thanks :D

Jason Hall
07-25-2008, 10:17 PM
Bad Karma, I steepened the rake a few dergree's. Here Is the final pic.


07-25-2008, 11:21 PM
wow that thing is amazing!

07-26-2008, 02:13 AM
omg that thing looks awsome excellent job

Jason Hall
07-26-2008, 09:05 PM
Well guys I beat on It today :w00t: The only thing I need to change It my steering stops are set a little to tight (simple fix). Other than that, I LOVE IT. The fenders on this bike are back quite a bit farther than the 350x based bike. I can cradle myself right down on the footpeg so much better. I never realized how much the 350 fenders were In the way until today. I have no other complaints.

I rode It on a sweet oval, and jumped It some. I did stiffen the compression up on the front forks, but that was It. The rear shock Is simply awesome, thanks to Steve at Custom Axis. Here's a couple Dirty pic's :D



07-27-2008, 12:38 PM
That turned out great! Nice alum welding too. Why did you go with a custom tank? Did the stock CRF tank not fit with the new mods?

Bad Karma
07-27-2008, 12:45 PM
Very nice! Looks much improved with the forks in the proper orientation. Great job. :D

Red Rider
07-27-2008, 01:40 PM
It turned out pretty damn sweet Jason. I agree with Karma, the forks look much better as leading axle-rather than trailing-axle, except now you need to route your front brakeline the proper way, in between the left forkleg & front wheel. Once again, awesome job! :w00t:

Billy Golightly
07-27-2008, 02:22 PM
Man that thing looks awesome Jason. You got anymore pictures of the fab work you could post up? That gas tank looks really good from what I can see of it.

Jason Hall
07-27-2008, 03:38 PM
The stock crf tank would never work because I wanted the seat height low. I tried everthing to be able to use It, but there was just no way. I like the look much better with the axle leading also, but the handling Is sooo much better since changing the rake and flipped the axle leading. Changing the rake at the steering head brought everything together nice. I would have had to make different mounts for the fork gaurds and rebuild my entire front brake mounting setup. The coolest thing was, I got my desired wheelbase and saved alot of fab time not having to change the brake & fork gaurds around. There Is no room to run the brake line between the front wheel & fork tube. I will be using a longer YZ450F front brake line like Derrick did on his bike, then I can route It better.

Here's a couple more pic's of the fab work.







07-27-2008, 04:01 PM
Dooood! I want one! Ive been daydreaming of setting one up like that, but for Sand. :beer congrats! looks great! HH

(100 posts in almost 4 years, anyone think im a postwhore yet??)

Red Rider
07-28-2008, 03:50 PM
There Is no room to run the brake line between the front wheel & fork tube.That's too bad. I thought it looked a little bit tight in that area, but it was hard to tell for sure in your pics.

07-28-2008, 04:57 PM
Dude, I am astonished. That thing is so fricken sweet! What are some of the comments that you get from the guys with extra wheels and those with one missing? I find there are alot of people who don't understand why anybody would bother fixing an old trike, let alone build their own! I get alot of people pointing at me when I ride my Tecates, not many people see three wheelers riding around anymore. I can imagine how many people point at yours!

Jason Hall
07-28-2008, 05:19 PM
Fabiodriven, I havn't really taken It any palce to ride as of yet. I did bring It to a friends oval track this weekend. A couple of his sprint car buddys said, they don't make them anymore do they. I said no they don't, but I do and giggled a little. They checked It out but didn't really show much Interest. Once I got out on the track and let Er RIP they saw the power the 450 made then showed alot more Interest. My buddy has a mini sprint with a cr250 engine In It. I asked If he would let me run his car for a few laps. He kinda looked at me funny. I said, I'll let you take my 450 for a ride. He said you can put that thing right back on your truck, and busted out laughing. He didn't want any part of riding the 3 wheeler :D I did run the mini sprint though, and was very Impressed with the power and handling.

07-28-2008, 06:07 PM
Nice! I find it so amusing how people don't understand the whole trike thing. I couldn't picture riding any other way. It's gotta be all the "old wives tales" of "my buddy lost his leg on one of those things". Somebody always has to day it. Usually the next thing somebody says is "you're crazy ridin that thing!"
Then I tell 'em to grow a set!

07-28-2008, 07:35 PM
that is some awesome fabricating , and i would love to ride a trike like this:TrikesOwn :D

Billy Golightly
07-28-2008, 09:15 PM
So Jason, you did end up modifying the rake on the frame then afterall?

Jason Hall
07-28-2008, 10:30 PM
Yes Billy, I had to cut It In order to make It turn. I sure did'nt want to, but am now sure GLAD I did It.

07-29-2008, 01:00 AM
Just stumbled on this thread. Amazing work Jason. your fabrication skills are top notch. Looks great. Keep it up!

Billy Golightly
07-29-2008, 06:44 AM
You raked it in more, right?

Jason Hall
07-29-2008, 08:40 AM
Thanks Hondawasaki.

Billy, Yes I pulled the rake In. I learned from building this bike that the 05 and up frame would have worked out better, but they are not cheap. I paid 100.00 shipped for the 02 frame. The cheapest 05-08 frame I have seen was around 400.00 + shipping, and It was powder coated Black (yuck).

07-30-2008, 06:18 PM
Great job Jason..... That is a hot looking machine :D

Jason Hall
08-15-2008, 12:37 AM
Here's the latest picture. Just a few finishing touches to finish It up.

It will get It's first workout this weekend :w00t:

Louis Mielke
08-15-2008, 06:39 AM
Jason, throw both your boys on there I wanna see the suspension loaded. :P

08-17-2008, 12:35 PM
Exelent job Jason

You are an inspiration to trike riders all over the globe.

I have three questions regarding your build;

1. Now that you have done a few conversions would you say that you have found the best rake angle for an offroad trike, or do you just trial and error it. I assume that you rode it and found that it had too much rake, but what made you decide to take four degrees out of it? If you had gone with the 05 frame, would you have still reduced the rake?

2. Looks like the TRX450R swinger was made for the CRF450. Did you have to modify the frame/engine/swinger to get it to fit into the bike frame? and

3. Is the TRX swinger long enough? I find the standard swinger on my KXT could benefit from being longer, It likes to wheelstand a bit too easily for my liking. How do you find the TRX swinger? is it ample length for most riding situations? I seem to remember reading that the standard TRX likes to wheelstand in motocross type racing, (have I read that correctly?) if this is the case surely it would be worse on a trike?

thanks for your time


Jason Hall
08-17-2008, 05:20 PM
OZQUAD44 - First, I'm glad that fellow trikers are happy to share my 3 wheeled projects. I really enjoy building them which helps make the final outcome even more enjoyable.

I don't have a set rake that I just set them to. You need to think ahead alot with these type of build's. I learned the hard way when I built my boys ATC85R that you need to be certain you have your rear ride height / suspension set correctly first. On the 85cc bike I set my rake at the steering head, finish welded It then needed to lower the rear ride height which raked It out more than I wanted. Once you get the rear end set, then you can figure out where your rake needs to be. So, you can't just take rake out of every bike convertion and assume It will be correct. There are lots of variables that need to be correct before you mod the steering head.

I had to mill the front of the swingarm to fit the CRF frame. I also had to shave the origional CRF subframe boss's down so the swingarm would clear.

The swingarm could be longer, but I like the stock length. It turns GREAT with the shorter swingarm, but does wheelie easily If the throttle Is just slammed wide open. The good thing Is these engine's pull so good through the entire RPM range that you can keep the bike under control easily once you are familiar with It. I rode this bike on some VERY rough wooped out winding trails at Roger's (Sandpuppi's) ride this past weekend. The final result on this bike Is WOW, I love this thing :beer

08-19-2008, 11:29 AM
I have to say this is my favorite conversion to date.

Would you mind throwing some more photos up, Cheers

08-19-2008, 11:43 AM
this needs to be moved upto the top teir thread i think. definately one bada$$ trike with top quality craftsmanship imo.

08-19-2008, 09:59 PM
Jason, Thanks for sharing your conversion with us. It's one nice 3wheeler if not the best conversions I've seen. Do you have any pictures showing how you cut the frame to correct the rake. I would like to know how you kept it straight. What's your opinion on converting a Honda XR650R vs. your 450r. I have one and love it's power but it weights in right at 300lbs as a bike.

Thanks, Ed

Jason Hall
08-19-2008, 10:45 PM
I will post up more picture's In the next couple days guy.

As far as converting the 650, I would be lookin Into It If I had one LOL. Anything is possible, with a little fabbing. I guess It all depends on how bad you want to do It.

johnny's X
08-21-2008, 11:42 AM
So why is this not in the top tier section?

Jason Hall
08-23-2008, 03:01 PM
Here's the pic's I said I would post up. Hope you like them.






08-24-2008, 04:57 AM
Top tier machine for me!

Ever thought of offering a kit so Bike owners could do this conversion.

Louis Mielke
08-24-2008, 08:47 AM
His name is Jason, not Bill.

09-03-2008, 10:10 PM
Jason, Do you recall what type of aluminum you used for the tripples. Can you recommend a thickness/size and clamping bolt. It looks like you used one bolt per side.
Do you know if the center to center measurement for the forks is the same for the top and bottom tripples. I'm trying to get up to speed on tripple clamps. It's something I always took for granted. I find that I don't know enough about them to tell a machinist friend what I want him to make. Thanks, Ed

Red Rider
09-04-2008, 02:14 AM
Do you know if the center to center measurement for the forks is the same for the top and bottom tripples.The center-to-center distance of the top & bottom triple clamps would have to be the same in order for the forks to be parallel & work properly.

Jason Hall
09-04-2008, 05:50 PM
Hipower- I used 6061 aluminum, mine are 3/4" thick with 5/16" pinch bolts. I built mine to be light, but strong enough for the riding that I do. If you jump big, I would make them as thick as the stock triple's for what ever forks you will use. I will be adding 3/4" pinch collars on both the top and bottom clamps to add pinching force and strength. I will post up some pic's of the added piece's within a week or so.

Red Rider- I think he Is trying to figure out If the triple's have rake built In. Mine don't have rake built In, so the center to center Is the same top to bottom.

09-04-2008, 06:22 PM
Thanks Red Rider. That's what I thought. Jason, (before you made your triples) had you known that you needed less rake, could you have corrected your front geometry with just a change in the rake machined into the triples and avoided cutting the frame at the steering head. I think this is what you originally was shooting for. Does negative rake in relation to the steering head bolt cause any negative effects on steering. Thanks, Ed

Jason Hall
09-04-2008, 06:54 PM
I have never seen a set of triple's with neg rake built In (I'm not saying they have not been made). I have rode 3 wheelers with bent forks though LOL, I kinda figured with neg rake It would handle funny. I was sure I could mod the frame and make It strong enough. I wasn't sure I could make the neg rake triple's and not waiste my time and money. So I modded the steering head.

09-05-2008, 06:08 PM
Thanks Jason. I'm going to try to have a set of triples made for my XR650R. I think I will go with zero degree's of rake built in. I want a trail machine that can handle deep sugar sand trails. The only problem I have with a bike conversion is the fact that it doesn't have the air tube like an atc. With the hurricane that just crossed the state, I have a lot of deep water crossing that my 86 200x handles just fine. It floats with the inlet for the air tube out of the water. UPS just dropped off my 07 trx 450 swinger that I got for my 85 atc250r project but I think I will save it for the 650r if I go thru with this. I get more excited over having rides no one else has so I will probably will do this. Thanks, Ed

Jason Hall
09-05-2008, 07:32 PM
That will be a very cool project. Stay In touch with the progress :naughty: sounds like It will be fun to ride. :beer

09-06-2008, 09:28 AM
Jason, give us the race ride report. Suspension, power out of turns, steering, what gears were you in mainly, traction, braking?

Ill tell you what, you freekin smoked past my 310 on the holeshot in the second moto. A little to fast that you went wide and I went tight.

Jason Hall
09-06-2008, 12:48 PM
Max after racing the bike I really can't complain. The suspension Is just unbelievable. The rear linkage setup worked out GREAT, and the shock just makes everything PERFECT In the rear. I won't change anything back there. I will be changing the front forks slightly Springs & valving.

The power is the other thing that makes the 450's great. They rev like the old 2 strokers, but have awesome torque off the tight turns. My Rekluse clutch worked great, now that the carb bugs are getting worked out.

I'm very pleased also with the steering, the bike doesn't wear you out. The steering is quick and light, but doesn't dive. I will be adding a Scotts adjustable steering stabilizer, that will help at Smith Rd bigtime I think LOL.

I don't have to shift that much with the great low end torque, but I still do. That sounds kinda stupid, but I use my trans to slow down, this Is just something that I've always done and Is a hard habit to break. I have the gearing setup more for low end. At smith Rd I was In 4th on the straights. In the tight turns though I was down to 2nd when slowing down, and used 3rd alot In the turns.

Traction Is unreal, these Hondas can lay It down sweet with stock rear suspension parts, factor In the very sweet power curve and traction Is awesome. The brakes are typical Honda, they work great, but I try to stay on the throttle lol.

My holeshot In the second moto was GREAT, It was my exit from the loop where you just spanked me on the low side. You were on a mission :D In the second moto We (Max and I) were racing hard, max corners very well because he Is very good at flicking the bike sideways. He throws the ass end around and just slams the gas open. It took a long time to get around ol buddy. I took out the green barrel just before the woops with my left rear tire LOL. This picture was just before the barrel was bounced to the side. When Max slung the back of the bike around I was forced out causing me to hit the green barrel that says practice on It, that was close.
I wish I could see that on video. I was able to get along side of you In the woops, then just barely got by going Into the tabletop. It was some great racing Max, I enjoyed It very much. The bike Is a great MX bike, but Is also great In the trails. I do have a couple things to work on to keep the engine cool on slow trail rides, but I'll work that out. So overall the bike proved It's self to me as a good performer, and It will ge better :twisted: Can't wait for Smith Rd 09 :beer :beer

09-06-2008, 03:04 PM
In the second moto We (Max and I) were racing hard, max corners very well because he Is very good at flicking the bike sideways. He throws the ass end around and just slams the gas open.
Now just think if he came off some of his $$$$$ and bought an AXLE to get W I D E!!!

09-12-2008, 06:50 AM
Real nice bike!!What tires are those on the rears?

09-21-2008, 01:36 AM
Hey Jason, It looks like I'm going to keep this thread going with my dumb questions. What type of aluminum did you make you fuel tank out of. Where did you get the filler neck from. I like the way the sides of your fuel tank roll over to meet the top section. Did you hammer the edge over or is there a tool I don't know about that can do this. It looks like you used solid round aluminum stock that you drilled and tapped for the shrouds and seat attachment points. If so, did you drill and tap then weld or weld then drill and tap. Thanks, Ed

Jason Hall
09-21-2008, 04:56 PM
I'm not sure on the grade of the aluminum, but I do know It can be bent to a 90 deg tight angle. I would guess It's like 4043, or something softer than that. I know that 5053 Is hard to bend tight, and 6061 Is even harder. Aluminum can be anealed (Sofened). I hammered the edges of my tank with a rubber mallot and a 6x6 piece of treated lumber LOL. Yes, I used round stock, threaded It then welded the end shut.

09-23-2008, 07:16 PM
Thanks Jason, Ed

10-21-2008, 10:08 PM
can you post pics of how you had to modify the trx sub frame and a descripion?

Jason Hall
10-22-2008, 03:13 PM
The subframe I used was from a 05 TRX, that was bent. I cut the weld loose on the rear tube that holds the two sides together. That was the only part that was bent. I then used the exhaust to hold It In place while I made the mounts. I just made some flat plates, then sliced the square tube Installed the plates where I wanted them. Then I made mounting tabs and welded those to the crf frame. Once the mounting tabs were welded on I tacked the plates to the subrame. Then pulled It all off and finish welded everything. Once all that was done, I moved the front seat mounts out so the seat would mount just like the quad. I did cut about 3" off the mounting side of the subframe, then sliced It & welded the plate's on.

Here's a few pic's.






10-22-2008, 04:06 PM
Skills! lol Very nice fab work Mr. Hall.

Jason Hall
10-22-2008, 08:57 PM
BigGreenMachine, Thank you Sir :beer

10-22-2008, 09:03 PM
You got any vids of you riding it?

Jason Hall
10-22-2008, 09:11 PM
Edoggy, I will get you up some video this weekend :D

10-22-2008, 09:26 PM
Edoggy, I will get you up some video this weekend :D

Cool, Thanks

I thought I saw an old video somewhere of you riding....can't seem to find it. Or maybe it was somebody else.

Jason Hall
10-27-2008, 02:12 PM
Here's a couple short video's. Nothing at all special, but It's something. Our practice MX track was a washout, I will get some better video once we can get out there. My 11 year old Is on the 88 250R.
http://http://i237.photobucket.com/albums/ff42/Jasons450r/th_450video2.jpg (http://s237.photobucket.com/albums/ff42/Jasons450r/?action=view&current=450video2.flv)

http://http://i237.photobucket.com/albums/ff42/Jasons450r/th_450video.jpg (http://s237.photobucket.com/albums/ff42/Jasons450r/?action=view&current=450video.flv)

http://http://i237.photobucket.com/albums/ff42/Jasons450r/th_450video33.jpg (http://s237.photobucket.com/albums/ff42/Jasons450r/?action=view&current=450video33.flv)

10-27-2008, 03:00 PM
Awsome! Jr. is gonna be passing you soon by the looks of things. Must be exciting to watch your boys progress with their riding.

Jason Hall
10-27-2008, 03:30 PM
BigGreenMachine, Jr Is a little bit nutty LOL, but he Is so much fun to watch. It's out of control when my 2 oldest boys get racin around our small yard. Here's a couple pics of Jacob up north on the 85cc 3 wheeler. The pic's are blurry, but he Is getting real good no matter what he ride's, dirtbike 3 wheeler, or quad. Honestly, I would park my bike just to watch my boys LOL. It Is AWESOME to be able to watch them get better :beer



10-27-2008, 08:09 PM
No fear! That is one wicked picture, poster worthy without a doubt. How cool for him it be for dad to have his poster up in the garage. :) Go Jr!

10-29-2008, 02:32 PM
from the pictures it doesnt appear that you used the seals for the front swing arm mount, is this correct and any issues so far? also whats that extra tab that you have welded on the lower left side of the frame below the swing arm mount? awsome project

Jason Hall
10-29-2008, 06:02 PM
Audioworks04, I did not use the origional dust seals on the outside of the swingarm. I bought 2 extra seals that Honda uses to seal the Inside of the steel collar, I then Installed those to seal the outside of the steel collar. I used the stock trx thruss washer on the outside with hardened washers to keep the steel thruss washer from rubbing the aluminum frame. So there are seals sealing the needle bearings on both sides. I hope I explained that good enough to understand. I have had 0 Issue's with this setup. I did the same thing with my 350x/450 and ran that bike hard for a couple years with no Issue's either.

The Tab you are refering to Is where the stock CRF footpegs were mounted. It Is a raised flat boss casted Into the frame, I welded the bolt hole shut.

10-30-2008, 04:41 PM
this bike is an awesome example of jason's skills.I rode this bike and it is flat out bad ass.in a matter of minute I felt super comfortable and thankfully for jason I didn't get it back to the track to put some air under it.I could get down on this bike guranteed.

10-30-2008, 05:22 PM
Thing is sick.

11-04-2008, 10:55 PM
Ever think about making it street legal? I know in ohio I could get it legal.

I'm just not sure about headlight and taillight (most enduro are made for closer together forks)

11-04-2008, 11:36 PM
nice. great job

Jason Hall
11-05-2008, 09:14 AM
Aka am, I really don't want to ride It on the road. It would be cool though, but with a live rear axle high speed turns would be fun LOL. Besides that, I have way to much fun off road.



Bigpimpin, Thanks :Bounce :Bounce :Bounce

11-05-2008, 04:29 PM
Nice track.

11-08-2008, 12:51 PM

Can someone photoshop this a differant color? blue, and black? Maybe more?

Hey Jason, you have the same last name as me, did you know that? On to the questions! the new subframe, did you shorten or lengthen? I got confused there. what about the airbox? Did you try the stock shocks out? How are the brakes? Did you have to mod the back brake system? Last one for now... What is your front axle made of?

Jason Hall
11-09-2008, 02:17 PM
Ak am, I did shorten the subframe, both the top and bottom tubes. I used a stock 350x airbox with a modded 04-05 TRX Intake boot. The brakes work Great, I did not mod anything on the rear of the swingarm, It's all Honda parts. I used a stock 85-86 atc250r front axle with special adaptors to center the wheel :beer

I didn't know our last names were the same. Thats cool my Brother :wondering

11-10-2008, 11:15 PM
Very very interesting. Thanks for the info!

This right hear ladies and gentlemen is the future of trikes, unless the big companies started making them.

11-24-2008, 01:24 PM
what was your final ground clearance of the bike wet with no rider? and how long did your front forks end up as compaired to a storck 85/86 250r?

Jason Hall
12-02-2008, 10:11 PM
The ground clearance Is 10.5" at the lower engine cradle without the rider. The rake Is a bit less than a 86R.

12-11-2008, 01:12 AM
How's it running? Did you put stainless valves in it?

Jason Hall
12-11-2008, 08:10 AM
Yes It has stainless valve's along with the spring kit. I had the seats cut by a guy named Ron Hamp here In MI. He Is known for getting BIG power from the crf250 & 450's on Thumper Talk. The engine runs really strong, the crf450 has very smooth power delivery from the bottom to the top.

01-21-2009, 01:21 AM
Got any measurements of the tank? pics? This is my main worry right now, any chance for a bigger tank?

Jason Hall
01-21-2009, 09:12 AM
No measurements on the tank, I just fitted It between the frame rails. I went 55 miles on a full tank out west, running wide open most of the time. My tank holds 1.7 gallons.




http://http://i237.photobucket.com/albums/ff42/Jasons450r/th_27c4f3cc.jpg (http://s237.photobucket.com/albums/ff42/Jasons450r/?action=view&current=27c4f3cc.pbr)

01-25-2009, 01:16 PM
nice fotos

01-29-2009, 12:03 AM
good job on a difficult build


if we ever cross paths i wanna ride it! (beers on me of course!)

Jason Hall
01-29-2009, 08:08 AM
Thank you very much, when we cross paths you are welcome to a ride!!!

02-22-2009, 06:46 AM
jason i started the project i tolled you about....here is the link.


03-31-2009, 09:46 PM
jason; are you using the stock crf450r kicker or something different? also are you using the trx carb or the crf and if the crf how did you convert it to a thumb instead of twist? is there a conversion kit out there somewhere?

The Goat
03-31-2009, 10:10 PM
I can answer the carb question....

when using the push pull FCR carb...it's very simple to just seal off one of the holes and then just connect the other cable to a 450r throttle.

doing the same thing with the 37mm FCR...

I don't know if that's what he did, but it does work.

03-31-2009, 10:22 PM
i have heard of doing it that way, but have also heard that the return spring on the fcr isnt strong enough to work just solely as a pull set up. not sure this is right just what I have heard from others.

Jason Hall
04-01-2009, 07:33 AM
I used a cr125 kicker & nuckle with a custom adaptor. The goat Is right, I just bought a YFZ450 throttle cable and hooked It to the pull side of the carb. I then plugged the other hole with silicone. I have no problems with the throttle returning. I use the CRF carb on my bike.

Derrick Adams
04-08-2009, 08:20 PM
Goat... MotoWoz shocks are the chit! Very well built shocks from what I hear.

Derrick Adams
04-11-2009, 12:53 AM
Will do, Goat. Heading there next weekend. Heard you have a hell of a 350X coming!

04-26-2009, 10:45 PM
jason: what did you use for the swing arm pivot bolt I that the trx uses a smaller size diameter bolt than the crf. Did you end up boring the trx swinger and using the crf bolt and bearings or make a space for the trx bolt as it passes through the motor?

Jason Hall
04-27-2009, 07:18 AM
I made stainless steel reducer bushings that press Into the frame, and used a shortened TRX bolt.

04-27-2009, 09:26 PM
Do you still have the dimensions of this bushing you made? If so is there anyway that you could make me one and ship it too me. This is one of the last few things I have left to fidgure out. The others being rear brake pedal and the airbox. Send me a price and let me know if its possible.

05-16-2009, 12:10 PM
any idea what temp your head pipe gets up to? Mine hits 350 after just a few minute idle. Thinking i might still be a little lean, but it runs great so not sure if i want to change something.

05-16-2009, 07:14 PM
any idea what temp your head pipe gets up to? Mine hits 350 after just a few minute idle. Thinking i might still be a little lean, but it runs great so not sure if i want to change something.

Its not good to let it idle too long, the mx engine runs hot! When I'm on the starting gate mine would dump coolant if I let it idle too long. It would be good to install a Boyesen water pump for better cooling.

05-16-2009, 07:44 PM
Jason AWSOME work dude. You have inspired me to do a project like yours. You have tons of time and money into this project. Great job. I have sent links to all my friends about your build.

10-29-2009, 01:52 AM
You ever try to send pics of your build to honda???

Jason Hall
10-29-2009, 07:14 AM
No I have not sent pic's to Honda, It would be cool to know what they would think about It though :D

10-29-2009, 10:24 AM
Yea it really would. If honda made a new 3wheeler thats what it would look like, that would be too good to be true tho lol.

Your bike is just simply amazing man! Outstanding job.

10-29-2009, 11:21 AM
Nicest looking 450 trike built to date.

10-29-2009, 07:07 PM
This is one of my favorite trikes ever, I wish I could just buy one of these!

Jason Hall
10-29-2009, 10:40 PM
Thanks for the compliment's guy's :w00t:

10-30-2009, 07:15 PM
I just wish when i called Jason he would answer the phone, and then when i scheduled a time to come over he would answer the phone when i was in town...

Kidding, AWESOME job Jason. I'm still waiting to feel the smooth handling and get some ideas for my build.

Jason Hall
10-30-2009, 07:29 PM

I'll be around all weekend, your welcome to cruze on over and ride the beast :D

10-30-2009, 07:45 PM

I'll be around all weekend, your welcome to cruze on over and ride the beast :D

I've gotta work tomorrow. Maybe Sunday, I'll give you a ring.

11-11-2009, 11:53 PM
Very nice fab work! I love it's stance and how everything matches up perfectly.

01-19-2010, 02:53 AM
thread dig!!!!! jason i read that you said the 05 up crf frames had less rake in them then the 04 downs? any idea if you could get away without cutting the neck?

Jason Hall
01-19-2010, 09:33 AM
The only reason I cut the neck on mine was because I had the rear suspension built with the front Axle trailing. In order to keep the wheelbase measurement I wanted, and to make the bike turn I had to cut the steering head. The frame can be leaned forward to achieve the same result, but the front of the lower engine cradle would be closer to the ground than the rear of the cradle. The 05 and up frame has steeper rake, and would be easier to keep the lower cradle flat on the bottom.

I will be building another Aluminum framed bike In the next year or so, using a 05 CRF frame. The only thing's that will be different Is I will set this bike up with the Front axle leading before I mount the rear shock, and It will be lighter. I will also build a bigger gas tank for the next one. Other than that I still love this thing, I've had no major problem's with any part of It. It handle's awesome, and make's Wicked power.

01-19-2010, 10:39 AM
when you say steeper rake you mean the wheel is farther away from the engine thus the frame would need the wheel pulled back farther to get the bike to turn, withought pitching the frame? or is it closer to the frame?

Jason Hall
01-19-2010, 01:45 PM
When I say steeper rake I mean the forks are stood up steeper, and the wheel would be closer to the engine.

01-19-2010, 06:05 PM
awesome thats just what i needed to know! so im thinking you can get away from cutting the neck and still get a good rake and turning radius

Jason Hall
01-19-2010, 06:15 PM
Yes that Is correct!!

01-19-2010, 08:14 PM
thanks a lot man! but lets just say i needed to tilt the frame like an inch how would you do it without moving the pivot area of the swinger? move the upper shock mount down??

Jason Hall
01-19-2010, 09:56 PM
move the upper shock mount down??

Yes, set your rake where you want It, then figure out where to mount the top of the rear shock. Do everything temporary at frist, set the bike down and make sure your close before final welding / mounting Is done. Remember the more the rear of the bike sag's, the more rake the front end will have. So Everything needs to be right before you weld. Thats the exact mistake I made, I was set on running the front axle trailing, and finish welded the rear suspension. The easiest way for me to correct the problem I caused was to mod the rake at the steering head.

01-19-2010, 11:02 PM
I think the only problem was a little bit of MagicJames, haha

Maybe I'll brave up again and try to ride the beast once more, Of course if that's ok with your son, LOL
He was more sad than I was and it cost me a whole 2 weeks pay!!

01-19-2010, 11:40 PM
come on magic what happen!

Jason Hall
01-19-2010, 11:52 PM
Well you didn't work ANY magic on that did ya? I don't think my boy or I will let that happen again :D

01-20-2010, 07:51 PM
jason to get the rake does it have to be crf450 frame only or is there othe models that got the rake change in 05? cr frames? or what?

Jason Hall
01-20-2010, 09:44 PM
I never really checked Into other model's. A search on google will get all the Info you need. I searched for CRF450r spec's, then picked a year :beer

07-11-2010, 06:53 PM
Jason since you have a rear kick, and I notice you installed a different kicker, does your foot ever hit the fender when you start it?

Jason Hall
07-11-2010, 10:18 PM
Jason since you have a rear kick, and I notice you installed a different kicker, does your foot ever hit the fender when you start it?

You need to position your foot correctly on the kicker. I don't want to cut my rear fenders, so I use a short YZ 125 kicker. It does a Fine job once you know the drill!!

07-22-2010, 07:20 PM
I just wanna say again, AWESOME INGENUITY!! and the fact that you share these findings with ALL of us tells me that you enjoy it and it doesn't have to be a "secret!!"

Every build teaches you something else............. And you share it :beer

Nice work Jason, but I bet you've heard that enough!

07-22-2010, 08:28 PM
I think the only problem was a little bit of MagicJames, haha

Maybe I'll brave up again and try to ride the beast once more, Of course if that's ok with your son, LOL
He was more sad than I was and it cost me a whole 2 weeks pay!!

Fill us in! What happened????

Jason: Awesome Build. I just stumbled upon this thread. I always wondered where this trike cam from in your pic!!
Have you ever thought about building a trike out of a Honda TRX 90? I know it doesn't provide a big boy trike, but it could give the younger guys something to ride. Would it even be worth it to do a build with a TRX90? I have had one in my garage for 4 years. I just can't bring myself to sell it. It runs fine and everything.

10-09-2010, 12:20 PM
Read the entire thread and love it, I didnt see if you ever mentioned how much rake degree change from 05 and newer frame vs older frame?
Also side note do you know if the TRX quad engine bolts into the Bike frame??

I want to build another hyrbrid, 05 and newer based CRF450X, but unsure if gonna buy bike to start with or maybe a quad and then buy the bike parts, and use quad engine? Also mine will be street legal like my WR was. Keep up the great work!
Can I get a template on those tripple clamps :)

10-13-2010, 02:44 PM
He did in fact mention that the newer frames had a better rake to deal ( which may mean - lower the shock mount, set up the ride height and your good); But I believe the newer frames were allot more expensive than the nice earlier year (maybe 04) frame he picked up...........

12-02-2010, 10:32 PM
WHo built your ytz 450 that thing is ultra sweet!

04-19-2011, 01:29 PM
is there an issue with starting it with the rear plastics being so close to the kick start??

Jason Hall
05-02-2011, 04:28 PM
I used a YZ125 kicker, and It clears the fenders without a problem. You have to use your heal on the kicker, but once you get used to It It's great.

I built the YTZ 450 for Derrick Adams with his Input. We built It to fit him, everything was put exactly where he wanted It.

05-02-2011, 10:21 PM
Jason you have some bad azz skills, you should write up a parts list and spec sheet on this build and post it, this would be something I would build, AWSOME job dude.

Jason Hall
09-19-2013, 07:03 AM
Jason you have some bad azz skills, you should write up a parts list and spec sheet on this build and post it, this would be something I would build, AWSOME job dude.

Thanks for the compliment on the 450. Not sure what to say about a spec release, I have and will give out info to people who want to and have built similar 3 wheelers.

09-29-2013, 12:52 AM
Im with Jason, this is not something for anyone to take on. It requires lots and lots of time and patience along with some equipment that most dont have access to. Jason was a huge help with my af build and I am sure would be glad to guide other in, as would I. But once again not a project just anyone.

Jason Hall
09-29-2013, 03:24 PM
This machine could be done much easier. I love how mine turned out, and built it just how (I) wanted it to feel. Since this was built a lot has been learned. Bike conversions are getting easier as newer parts get easier to find. I will be building another Aluminum framed bike soon. As soon as I finish a couple other projects, I will get started. The next one will take half the time and not require any frame mods.

09-29-2013, 03:49 PM
Jason what is your opinion on steel framed units vs alum? how would rate the abuse and general neglect one frame would see?

Twisting, bending, jumps, stress that kinda info. Im curious about this. I love my 450 but hate the weight

09-29-2013, 07:34 PM
This machine could be done much easier. I love how mine turned out, and built it just how (I) wanted it to feel. Since this was built a lot has been learned. Bike conversions are getting easier as newer parts get easier to find. I will be building another Aluminum framed bike soon. As soon as I finish a couple other projects, I will get started. The next one will take half the time and not require any frame mods.

You got my attention with aluminum frame with no modifications. That's the route I will likely go next as well. Looking forward to seeing the build Jason!

Billy Golightly
09-29-2013, 10:35 PM
The later model 450s (2005 and up?) have less rake than the earlier years, right?

Jason Hall
09-30-2013, 11:39 AM
The rake angle is steeper on the 05 and up CRF, but that is not that important. As long as the rear suspension is setup correctly, that is where the rake angle is set. What will make these conversions easier is the fact that the YFZ450 rear end can be fitted to the bike frame Rather easy. All of the bolt diameters for the linkage and Swingarm are the correct size stock. The YFZ linkage is basically a modern more compact design that was engineered to be used on a shorter ATV Swingarm. So another words IMO the YFZ linkage and shock is pretty much a better choice than a old school CR500 link. The 500 link was designed for a Longer dirtbike Swingarm. The YFZ shock is also VERY close to the same length as the dirtbike shock. The only real mod to the frame would be tabs to mount the subframe. I will be building a simple bolt on subframe that will be much easier than modifying a stock TRX450 unit.

Jason Hall
09-30-2013, 12:01 PM
Josh, I don't see a problem with the frame holding up. I built my original aluminum framed bike and have not had a problem. The sides of the frame are honeycomb on the inside, and are extremely strong. As far as weight, I would bet a stock steel dirtbike frame would be just as light as the aluminum frame. The aluminum frame might even be heavier as it takes more aluminum to maintain flexability and strength. I just love aluminum lol.. So that is why I built mine. It was modern, and the aluminum looks Cool lol..

Derrick Adams
10-10-2013, 07:59 PM
The whole TRX conversion is heavy. The engine is bigger, the wiring harness is bigger, the frame is heavier, etc.
We've made lots of headway on bike conversions. We are constantly looking at suspensions, shocks, linkages and swing arms.

10-11-2013, 09:00 AM
Jason and Derrick - I would bet that the Aluminum bike conversion trikes weight at least 30 - 40 pounds less than a steel conversion (and that is being conservative). Alot of that weight I know is from the heavier TRX motor. I know what Josh is saying though. When I pick up the rear of Jason's CRF conversion it feels so feather light compared to my TRX conversion. It's all in what you are used to I guess. I feel more comfortable on a Big Red in the woods than I do on say a much much lighter 200X.

That being said, other than jumping (comment intended for the Canadian Squirrel) would not the heavier bike be better for traction (we all know that MX races get very muddy from time to time) and possibly cornering? Cornering could be debatable, but more weight over the front end = better grip in the turns. Just saying........... Not saying any one is better than any other, as in my opinion, Jason Hall's CRF conversion is the best trike on the planet, hands down! (only thing that would make it better would be Electric Start ;) )

But lets face it - we are talking trikes here, not quads and bikes. The majority of us are not doing 100' triples - cornering IMHO means the most in modern day trike racing! Timmy200 has spoken!

10-11-2013, 11:34 AM
Funny I remember on a rainy day at the end of July him talking about that trike.Don't think I can post up a lot of the color full words he used.Did say it is a animal though.

Jason Hall
10-11-2013, 12:47 PM
Timmy200, you bring up a couple good points.. It's no secret that a 3 wheeler can use a bit more weight up front. That is a big reason why I Don't lighten up my triple clamp kits. I don't think the weight of the clamps helps a real lot with cornering, as it does when the bike is flying when jumped. When Derrick and I built his Tri-Z 450 we made his clamps out of steel, just to add weight to the front of the bike.. IMO with the added weight up front, one Canadian Squirrel can accelerate up the face of the jump harder and would have that added weight to help keep the front end from flying to hi.. As for cornering, the wheelbase is part of the secret to that, along with body English and front tire choice. Honestly in the mud I would rather ride a 2 stroke, just because the 450's (especially the Hondas) make a lot of tire spinning torque through out the entire RPM range. So in the mud, the 450 will sit and spin, and the 2 stroke will spinn, but has forward motion because of less torque, less weight, and Quick revving Old fationed HP. Also the 450's just LOVE to stall in the mud because if the rear brakes lock the wheels for a micro second the engine is dead with little chance of bump starting the hi compression beast..

Also Timmy200, my 450 now has had electric start as of about 2 weeks after this years dune trip. I plucked the 02 CRF450R engine, installed the top end of that engine onto the top of a FRESH 05 CRF450X bottom end. There were a couple small things that needed to be modded, but overall it was a pretty simple swap. So now the Ol girl has electric start Woo Hoo.

09-11-2014, 06:34 PM
Can we get an update on the new build? Did I understand you're now using a yfz subframe, shock, and swinger or just the shock and swinger? I'm looking at starting a build like this. Are there any updated threads?