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Thread: Aluminum 450r 3 wheeler.

  1. #1
    Join Date
    Jun 2005
    Location
    Jackson MI
    --
    1,686

    Aluminum 450r 3 wheeler.

    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.



    Last edited by Jason Hall; 08-20-2009 at 10:26 PM.

    83 ATC 60-R Cr60 converted with Zinger parts.
    83 ATC 70.
    83 Tri zinger
    ATC 85-R Cr85 engine on shortened 86-R frame.
    ATC450AF
    86 310-R Drag racer
    440 snowmobile powered custom built.
    87 Cr 500 Converted to Drag racer

  2. #2
    Join Date
    Nov 2006
    Location
    Florida
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    1,663
    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.

  3. #3
    Join Date
    Jun 2005
    Location
    Jackson MI
    --
    1,686
    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.

    83 ATC 60-R Cr60 converted with Zinger parts.
    83 ATC 70.
    83 Tri zinger
    ATC 85-R Cr85 engine on shortened 86-R frame.
    ATC450AF
    86 310-R Drag racer
    440 snowmobile powered custom built.
    87 Cr 500 Converted to Drag racer

  4. #4
    Join Date
    Mar 2005
    Location
    overton, PA
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    5,258
    its an awesome idea and cant wait to see the progress.
    ok here goes, 85 atc70,2 84 atc70's 83 alt50,83 atc110 , 70 us 90 parot green, 85/86 350x garage queen, stock rider 85 350x, project 85 350x 85 250r drag bike, 2 85 250sx's, alt185, , scat tracker?99blaster,85 250r rider,85 250r ice racer project ,93 kx500,99 xr200r, 91 dr250s ,89 lt500 quadzilla,88 lt250quadracer, 88 trx250r race full on race quad,, 01 yamahakodiak400, kawaki kd100,lt50 for my doughters,93 300ex, 230 quadsport, lt185, lt250 quadrunner,84200s, is that enough?

  5. #5
    Join Date
    Jun 2006
    Location
    Willow, Alaska
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    1,324
    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
    1988 Chevy Silverado 5.9L Cummins : 1986 ATC250R : 2012 Polaris RZR 570 :

    98% of Americans say 'OH $#!T!!' before going into a ditch on an icy road. The other 2% are Alaskans, and they say 'Here, hold my beer and watch this!!'

  6. #6
    Join Date
    Feb 2004
    Location
    Columbiaville, MI.
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    1,509
    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 !
    www.muddogs.org - My New Website

    MDR Racing

    Trikefest '06 '07 '08 '09 Survivor !!!!
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  7. #7
    Join Date
    Jun 2005
    Location
    Jackson MI
    --
    1,686
    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.

    83 ATC 60-R Cr60 converted with Zinger parts.
    83 ATC 70.
    83 Tri zinger
    ATC 85-R Cr85 engine on shortened 86-R frame.
    ATC450AF
    86 310-R Drag racer
    440 snowmobile powered custom built.
    87 Cr 500 Converted to Drag racer

  8. #8
    Join Date
    Mar 2004
    Location
    North Central Ohio!!
    --
    2,712
    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.
    2007 YAMAHA YTZ450 went to a great home RIP Sam


  9. #9
    Join Date
    Jun 2005
    Location
    Jackson MI
    --
    1,686
    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.
    Last edited by Jason Hall; 05-02-2011 at 11:01 PM.

    83 ATC 60-R Cr60 converted with Zinger parts.
    83 ATC 70.
    83 Tri zinger
    ATC 85-R Cr85 engine on shortened 86-R frame.
    ATC450AF
    86 310-R Drag racer
    440 snowmobile powered custom built.
    87 Cr 500 Converted to Drag racer

  10. #10
    Join Date
    Jun 2005
    Location
    Jackson MI
    --
    1,686
    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.

    83 ATC 60-R Cr60 converted with Zinger parts.
    83 ATC 70.
    83 Tri zinger
    ATC 85-R Cr85 engine on shortened 86-R frame.
    ATC450AF
    86 310-R Drag racer
    440 snowmobile powered custom built.
    87 Cr 500 Converted to Drag racer

  11. #11
    Join Date
    Oct 2002
    Location
    Northeast
    --
    16,910
    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?
    WHO IS Q?? WWG1WGA!!


    86 ATC200X Flatrack ( I may not be fast but this is one FAST 200X!!

    86 ATC350X Motocross, 86 ATC452X Flatrack!!

    07 Weekend Warrior Toy Hauler

  12. #12
    Join Date
    Jun 2005
    Location
    Jackson MI
    --
    1,686
    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.

    83 ATC 60-R Cr60 converted with Zinger parts.
    83 ATC 70.
    83 Tri zinger
    ATC 85-R Cr85 engine on shortened 86-R frame.
    ATC450AF
    86 310-R Drag racer
    440 snowmobile powered custom built.
    87 Cr 500 Converted to Drag racer

  13. #13
    Join Date
    Oct 2007
    Location
    England
    --
    143
    any progress?

  14. #14
    Join Date
    Jan 2006
    Location
    conesus lake NY
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    11,901
    Blog Entries
    1
    how's this comeing jason?

  15. #15
    Join Date
    Jun 2005
    Location
    Jackson MI
    --
    1,686
    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 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.
    Attached Thumbnails Attached Thumbnails 450 frame, tank, swinger..jpg   450 Trips, forks..jpg  

    83 ATC 60-R Cr60 converted with Zinger parts.
    83 ATC 70.
    83 Tri zinger
    ATC 85-R Cr85 engine on shortened 86-R frame.
    ATC450AF
    86 310-R Drag racer
    440 snowmobile powered custom built.
    87 Cr 500 Converted to Drag racer

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