Hello, New to bike building from texas

Holyman92

New Member
Mar 25, 2017
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TX
So I have had this Schwinn Jesse James WCC frame sitting in my back yard after a hurricane a while back (Just showed up there when we got back from evacuation.)

Anywho, I been wanting to motorize it for a while and finally settled on the bullet train 66/80cc engine solely for the electric start. Truth be told, totally stock this thing kinda kinda blows. Maxed it out at 28.5 mph (have a digital speedo/odo.) It starts and rides great and i have more plans for this frame to include ammo can saddle bags, a custom made 2-2.5 gal. Coffin gas tank, and a few more personal touches to come... for now, here's my project

 

Greg58

Well-Known Member
May 1, 2011
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Newnan,Georgia U.S.A.
Welcome to the forum, if you've read some of the posts on the forum the speed will get better. After the engine gets broken in you'll see a difference. Most people see a increase after a couple of tanks of fuel, even with no increase it will be fun.
 

Holyman92

New Member
Mar 25, 2017
10
0
0
TX
Welcome to the forum, if you've read some of the posts on the forum the speed will get better. After the engine gets broken in you'll see a difference. Most people see a increase after a couple of tanks of fuel, even with no increase it will be fun.
I'm loving it as is, but the speed bums me put a little, however that aside... it's great, fires right up, even the pull start only takes half the length to start it. And it gets me going at a good cruising speed without a full open throttle so it's great.

Just modified the air filter to put a pod filter and it didn't seem to mind one bit. Trying to figure out if I can make a gearbox for it atm... might be an obstacle but with 24hr access to a machine shop I should be able to make something happen... or not, we'll see
 

MotorBicycleRacing

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Jul 28, 2010
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SoCal Baby!!!
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So I have had this Schwinn Jesse James WCC

Truth be told, totally stock this thing kinda kinda blows.

Maxed it out at 28.5 mph (have a digital speedo/odo.) It starts and rides great
You have a 44? tooth sprocket on a small wheel.
The 44 is for a 26" wheel so you are under greared.

What is the measured diameter of your back wheel?
Probably should be a 36 toother.
 

Holyman92

New Member
Mar 25, 2017
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TX
.wee.
I thought the same thing, but without pedals its probably best to have good low end, at least I don't see any pedals.
Nope no pedals, and I was thinking about a 36 tooth but there's this batch of a over pass I gotta cross to get to work and it goes like 10 mph up it so I think ima keep it for now

On the subject of no pedals...
I just welded up some feet rest and welded them to the frame since I burned my boots on the engine

 
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Greg58

Well-Known Member
May 1, 2011
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Newnan,Georgia U.S.A.
If you want to increase the low end torque you can build your own exhaust pipe, myself and others here have seen noticeable speed gains with a custom pipe. mine worked out best with a head pipe at 16", experimenting will determine what works best for you. At the top of the page do a search of "expansion chamber" and you will find a lot of articles on the subject.
 

Holyman92

New Member
Mar 25, 2017
10
0
0
TX
If you want to increase the low end torque you can build your own exhaust pipe, myself and others here have seen noticeable speed gains with a custom pipe. mine worked out best with a head pipe at 16", experimenting will determine what works best for you. At the top of the page do a search of "expansion chamber" and you will find a lot of articles on the subject.
I'm actually working on a glass pack muffler to make it quieter ima experiment with a wide pipe throttled down to keep some back pressure, vs a straight pipe with holes and then a straight pipe with bends and holes... I have been reading up on them however I can't find anything definitive about SS steel wool vs fiber glass and at that I can't find anything about what kind of steel wool to use because at my job we sell different "grits", not really sure what to call it. But yea.
 

mike carter 2

Member
Nov 23, 2011
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west virgina
hi,back in the 70s, when everyone raced 2 strokes,we made our own silensers.most were made from beer cans with unsoaped steel wool inside.worked great but it stops up and would need to replase it every so often.i made a silencer for my china girl bike.i used stainless steel scrubbies,works great.you just need to pack it a little tighter than you think it should be