PROJECT peewee

[1upfront]

ok heres the idea im a 2 stroke lover for many reasons, lately ive been thinking more and more about what direction to go with the atc70 flat tracker, i finally decided to go with a pw80 motor to retain the machines original looks, laydown stance of the motor and air cooling. I'm going with some power reeds, custom intake, Mikuni vm20 carb, and I'm gonna try my hand at hydro forming a low pipe for it like the old dirtbikes had. I've already had some luck hydroforming with a small scale experiment. It will have a generous port job and headwork by flotek nothing to radical right away. Maybe later I'll get more serious and go to race gas. i have the pw80 motor templates made, ill be using the original holes for the top motor mounts so ill just line up the templates with the holes bolt them down and angle them where id like the motor to sit . at that point ill scribe them out on the frame and remove the necessary material and drill the other 2 new mount holes. heres some pics.
heres the bike with the old motor i built for it
http://i416.photobucket.com/albums/pp245/lhdunlap/100_1713.jpg
old 75cc built 4 stroke im giving to my dad for his ct70
http://i416.photobucket.com/albums/pp245/lhdunlap/Mobile%20Uploads/20131122_234703_zpsaadfd478.jpg
new motor
http://i416.photobucket.com/albums/pp245/lhdunlap/Mobile%20Uploads/20131122_233345_zps730803a6.jpg
hollow frame
http://i416.photobucket.com/albums/pp245/lhdunlap/Mobile%20Uploads/20131122_234741_zps71eea4e0.jpg
rough draft templates
http://i416.photobucket.com/albums/pp245/lhdunlap/Mobile%20Uploads/20131122_233154_zps9bdf1ce8.jpg
final templates
http://i416.photobucket.com/albums/pp245/lhdunlap/Mobile%20Uploads/20131122_233003_zps62f228cd.jpg
http://i416.photobucket.com/albums/pp245/lhdunlap/Mobile%20Uploads/20131122_233027_zps04591029.jpg
in the making
http://i416.photobucket.com/albums/pp245/lhdunlap/Mobile%20Uploads/20131122_223919_zps599e13ae.jpg
http://i416.photobucket.com/albums/pp245/lhdunlap/Mobile%20Uploads/20131122_233219-1_zpsecfac54f.jpg

[JasonB]

Hey welcome back to the boards! In for updates on this project

[1upfront]

Made the final cuts and drilled the holes tonight and it was a success. i went ahead and bought me an electric cut off wheel so i didnt need to take it to work. it fits nicely to say the least and my templates were dead on theres very little tolerance between the frame and motor. The chain is almost dead on too, and i know how ill get it dead on with a small adjustment. the hard part is gonna be fitting the foot pegs, ill need a custom mount and the chain adjuster needs to be relocated, its got to go back just alittle but again SIMPLE one hole and one slotted hole and im set. ill post the pics from tonight so you can all see the progress.
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[briano]

I love this idea. I wanted to do this same swap for a while now, but there is way to much going on right now. I'll be watching your build.

[1upfront]

ive never actually done a swap like this before, tho i know what its all about and have wanted to do multiple other swaps and custom builds in the past but never got around to it. I will say tho that this was easy and quick to do the actual mod but it proved a bit tricky to get the templates right, that was the true task here, the mod took around an hour from the first cut to bolting in the motor.. now im trying to decide what to do for a pipe, its either build my own thru hydroform, hand cone, or take a yamaha scooter pipe like the ones below and mod one to fit. the intake will be easy to make myself and im having flotek do the port job.
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[bkm]

Awesome project and nice fab work. Keep us posted because I can't wait to see a fat expansion chamber tucked up inside that little fella.

[1upfront]

Awesome project and nice fab work. Keep us posted because I can't wait to see a fat expansion chamber tucked up inside that little fella.


Thanks bro, ill get more done soon, i need to cut the mount plate off my atc70 pegs and possition them under the bike where it feels right then find a way to attach them to the frame using custom brackets/mount plates since theres no peg mount holes on the bottom of the pw80 motors.:Bouncetrailprotrailprotrailpro

[bkm]

Thanks bro, ill get more done soon, i need to cut the mount plate off my atc70 pegs and possition them under the bike where it feels right then find a way to attach them to the frame using custom brackets/mount plates since theres no peg mount holes on the bottom of the pw80 motors.:BouncetrailprotrailprotrailproIs there any way to get the proper aluminum threaded bosses and have them welded to the bottom of the pw engine?

[1upfront]

Is there any way to get the proper aluminum threaded bosses and have them welded to the bottom of the pw engine?

Not a bad idea at all bro but i dont have the equipment to weld aluminum and i want to keep all the fab work done by my hands, i have the bike loaded in the back of my 89 civic right now and its going to work with me tomorrow, i have some steel im going to make brackets from and weld them to the peg assembly then resistance weld some reinforcement nut plates on the inside of the sheetmetal frame so it can be bolted on as an assembly. I have a honda in my honda LOL:crazy:trailprotrailprotrailpro

[mart]

Lookin good mate love it.
I welded a peice of 12mm plate with threaded holes to the bottom of my laydown. The funniest part though is what I used for foot pegs a set of standard raptor handlebars tilted forward with a plate welded and holes drilled to match the plates I welded on bottom of the motor. Then some outter parts of 250r foot pegs welded for footrests that's how I had em ever since I built the trike. I had 100kg blokes ride mine without any problems I just used to tell everyone don't stand up (put all your weight) on the pegs. I'll try and find some photos
Looks awesome though mate you'll love it.

[1upfront]

Lookin good mate love it.
I welded a peice of 12mm plate with threaded holes to the bottom of my laydown. The funniest part though is what I used for foot pegs a set of standard raptor handlebars tilted forward with a plate welded and holes drilled to match the plates I welded on bottom of the motor. Then some outter parts of 250r foot pegs welded for footrests that's how I had em ever since I built the trike. I had 100kg blokes ride mine without any problems I just used to tell everyone don't stand up (put all your weight) on the pegs. I'll try and find some photos
Looks awesome though mate you'll love it.

thats awesome bro, thats why i never throw away anything lol, i made my peg brackets today out of a fold down step off the back of a a big rig i had laying around, i hope it works ok the welds didnt come out pretty so I wont show them, im gonna grind and re-weld on monday but i did get a system worked out to mount the pegs and thats what I was aiming for today. ill post pics in a min.

[1upfront]

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[1upfront]

then i had to re locate the chain tensioner, its still not completely done tho, i have to trim the edge of the left peg bracket so the tentioner wont get bound up on the bracket. next its modifying the shifter and hole sawing the peg brackets to remove some of the weight and make it look cooler lol.
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[1upfront]

Ok everyone just pretend that the above pics of the peg mounts dont exist lol i wasnt happy with the way it turned out 'not up to par for my skill level' so I came up with a new design that is MUCH MUCH more trick, they are made to hug perfectly around the back of the motor and swoop under fitting as close as possible to the bottom. heres the pics, Ill show them on the bike sometime in the next couple of days.trailprotrailprotrailpro183270183271183272183 273183274183275

[JasonB]

looking good man! anxious to see your pipe set up next. Hope you bring this out to Trikefest 2014 if you have time to make it

[1upfront]

looking good man! anxious to see your pipe set up next. Hope you bring this out to Trikefest 2014 if you have time to make it

Thanks bro, i was looking at some sv80 sno scooter cylinders today to see if its a possible bolt on part but not sure, i ordered a base gasket and Ill know when it gets here, the port layout looks a bit more aggressive and they make vf3 reeds for them, if not tho ill go with porting this cylinder and boyessen reeds as I planned, i dont think ill be able to run a down pipe either, too damn low to the ground so up pipe it is.
trailprotrailprotrailpro

[1upfront]

New peg mounts installed, think im going to buy some of those cleated ebay pegs to weld to these bad boys..
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[1upfront]

heres with the new bars i found in the metal dumpster at work, they are from a newer honda 4x4, the grips are like new I just welded a cross bar in from an old tv stand. Does anybody know where I can get a longer brake cable that will work on this thing???
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[tblumer]

Motion Pro can make you one. I had them make longer brake and clutch cables when I put dirt bike bars on my old 600 Ninja stunt piece.

[1upfront]

ya you go putting together some TPC handlebars and you gotta have a special cable now HAHAHA!!!

[1upfront]

thanks to captainweezy I got my aluminum front rim last night and installed it today now i got alloys all around 3 dif sizes and 3 different tires lol
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[trizilla]

this is looking great! when i do my mod 70's i like to use tall pit bike bars and i have had good luck with rerouting the stock cable. sometimes i have to bring it up behind the bars but it seems to work fine.

[1upfront]

Thanks bro I'm pretty happy with how it's coming along.I'll try what you said with the cable once get a new perch and lever.

[C.J]

Any updates yet dude?

[1upfront]

I got one small update. I got the pegs welded into the new brackets today. Didn't have time to Finnish up the shifter though but once I'm done there I'm just waiting for my tax return money so the motor can go out for porting and headwork.185496

[1upfront]

My slick new custom shifter I made..
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[HondaRidr]

This is a way cool project

[1upfront]

Thanks bro

[trizilla]

lookin good!

[big specht]

Have you made any more progress on the pipe ??

[1upfront]

No not yet I'm saving it for last lol . I'm good at fabbing stuff but I think it's gonna be tricky I saw a website that demonstrated hydroforming on 2stroke pipes. They made it seem extremely simple but im still little intimidated about it.

[big specht]

The problem is these things set so low and there isn't a lot of room to stuff it in the bike any where either. Have you thought about make it like a drag pipe out the side ?

[1upfront]

Ya I gave up on the down pipe idea , I think I'm going to do a traditional up pipe like a 250r would have.

[C.J]

It's 18 days later, it's done right? Lol

[1upfront]

More to come soon got the motor stripped out today and it's going out for some cylinder/case porting.

[1upfront]

Motor came back from penton racing products today:) had a pvl analog racing ignition made for it.
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[C.J]

Oh dude that's gunna be nasty! That things gunna rev like a mad man!!!!!

[1upfront]

Ya I hope for it to put down some serious grunt I will not be beaten by a motor with valves.

[big specht]

I think that's a challenge LOL

[tecaterob]

Nice..I can't wait to see it run

[1upfront]

I think that's a challenge LOL
Ya I know there's always someone faster lol I'm just going with the two stroke so the guys behind me will get carbon monoxide headaches and have a harder time passing me lol

[1upfront]

Got my vm20 carb mounted today. Made a custom intake manifold to fit it. No more 12mm on this pw80
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[C.J]

the PW80,, is it a gas and go engine or does it have 2-3 gears? I had one back in the day when i was real little but i cant remember

[1upfront]

the PW80,, is it a gas and go engine or does it have 2-3 gears? I had one back in the day when i was real little but i cant remember
3 speed auto clutch just like the stock motor.

[MattDragontamer]

Looking good, you bringing it to trikefest?

[1upfront]

I'll Probly be finishing it up right around that time but I don't think I'm going this year. Maybe next year tho. They need to have a flattrack event and I'll definitely come and compete.

[1upfront]

Freshly milled head.
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[1upfront]

Ported my reed cage and added some boyesen power reeds dual stage. Motor and piston porting is done and I'm putting it back together this weekend. Then its making the pipe and project over for now, can't wait to fire it up and go for a rip.
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[whitetail hunter]

looking good any more updates. cant wait to see this one rippin

[1upfront]

looking good any more updates. cant wait to see this one rippin
Just waiting on my exhaust to arrive now and then I need to modify it to fit properly. Then I can fire it up and break it in. Pipe will be here by Friday.

[1upfront]

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Pipe came in almost fits but will need modded little and pvl hooked up still needs flywheel set up and timed.

[whitetail hunter]

gppd looking pipe should work well

[whitetail hunter]

sorry. good looking pipe. cant wait to see how it runs

[atc300r]

Your getting there .I bet it will sound like a angry Bee.

[big specht]

Can you cut that 90 right before the muffler and turn it so the muffler runs across the rear of the bike and comes out on the left side?

[1upfront]

Can you cut that 90 right before the muffler and turn it so the muffler runs across the rear of the bike and comes out on the left side?
That's exactly what i was talking to my dad about doing the other day Jason. I'll be working on getting it done tomorrow then all I need is a seat cover and I'll get it out to the track so I can have Dan help me set up my ignition. Then it's just dialing in the gearing and carb I can't wait to hear it run

[1upfront]

Here's where I got today.197414

[MIK6]

That thing looks AWESOME!
I cant wait to see/ hear it run!

[1upfront]

That thing looks AWESOME!
I cant wait to see/ hear it run!

Thanks man I can't wait too. Won't be long now

[3wheelrider]

Can you cut that 90 right before the muffler and turn it so the muffler runs across the rear of the bike and comes out on the left side?
I recall seeing a pic on this site while back. I believe- the 2 stroke ?trike? (dont recall what exactly) had the pipe turned that way along the rear. Someones gotta know it...? What was it?.....

[1upfront]

I recall seeing a pic on this site while back. I believe- the 2 stroke ?trike? (dont recall what exactly) had the pipe turned that way along the rear. Someones gotta know it...? What was it?.....

It was a Franks the one with a backwards cylinder.

[C.J]

It was a Franks the one with a backwards cylinder.

Lmao you know your 70 is TRULY awesome when it reminds everyone of a Franks!!

[1upfront]

Frank would be proud lol

[1upfront]

Next thing you see will be a video of it running.
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[big specht]

I figured you would run it above the grab bar . Eather way it looks good it's going to be be good the hear the sound of a two stroke on the track

[1upfront]

yeah ill have it running this weekend for sure i cant wait to see how it performs.

[1upfront]

all done fellas rode it this morning and it screams. heres a short vid
https://www.youtube.com/watch?v=w1HaB_bv2r4&feature=youtu.be

[big specht]

Sounds good now we need to get everybody together to do some racing and see how it holds up to the four strokes

[1upfront]

Im gonna get jets this week its a bit on the lean side and get everything dialed so it should be ready by the weekend, then it will just be testing it out on the track to see if my gearing needs changed but it feels about right.

[crazycooter]

That thing is cool! Nice work!

[1upfront]

That thing is cool! Nice work!

Thanks man it was a neat little project and it was really fun. Here's the finish pics after I put the new seat cover on and the offset right rear wheel.199898199899199900199902

[torker]

Man, what a cool project!!!
I love minis.
Very well executed. Great work.

TORKER.

[1upfront]

Man, what a cool project!!!
I love minis.
Very well executed. Great work.

TORKER.

Thanks torker I love minis too. I came up with the idea years ago and i finally followed thru with it. I love the beautiful simplicity of a 2cycle enginetrailprotrailprotrailpro

[thcowboy]

Whats with the rear right wheel?:wondering

[big specht]

Flat track bike