motobicikletta

jack

New Member
Joined
May 18, 2008
Messages
4
Hi !
My name is Jack
I am from Toronto Canada
Long time motorized bicycle fanatic
used to build and ride them when I was a kid
with so called "D6" Russian bicycle motor which
so popular Chinese motor was copied from
however Russian engine had through crankshaft induction
and China simplified it by converting whole thing to piston
ported induction.We also had cast iron sleve and 45cc displcement
the rest of the motor is absolutely the same.
Here I built two bikes.The first one was more or less stock with
minor engine upgrades,the second one I went more dramatic
and designed and build my own cyclinder,cylinder head,changed piston,
put 18mm "Mikuni" ,build tuned expansion chamber,chain tensioner,
gas tank and some other things.
All in all I've got very decent result ,bicikletta running scary fast
and I have huge fun riding it(more than my 750cc sport bike)
Yet I stay with 50cc.This displacement has huge potential and
I belive if you want somethig bigger won't you just by motorcycle?
If sombody is interested in sharing this passion
please contact me with no hesitation
Regards.
Jack.
 

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L

Large Filipino

Guest
Looks like a Happy Time bottom Frankenstined to a foreign head.
That's the way it should have been. Ram air carb to front,exhaust to rear.
Nice pics.
And WELCOME to MBc!
 

jack

New Member
Joined
May 18, 2008
Messages
4
Well well not so much of a ram air but pipe is straiter(easier to build)
And thank's for warm welcome
 

graucho

Active Member
Joined
Feb 14, 2008
Messages
1,739
Hi Jack. Welcome to MBc!
Great build! Nice tank and exhaust. It looks quiet. Did you make the tank also?

If you search and are unable to find your answers, don't hesitate to post your question. Someone will steer you to a link, or reply to your question. Were here for each other! Enjoy! :D
 

jack

New Member
Joined
May 18, 2008
Messages
4
I built gas tank of aluminum pipe and two cnc machined ends
welded together it also has a fuel gauge
 

jack

New Member
Joined
May 18, 2008
Messages
4
It's spring loaded and I never had problems with snapping chain
Way better than standart kit abortion
 
J

joelvanderhoof

Guest
How did you get the carb on the front and the exhaust going out the back? Did you just turn the cylinder around? Or did you use a modified cylinder? I'm wondering if it is possible for me to turn the cylinder around on my Chinese 50cc to mount my expansion chamber when it comes in later this week. Any advise?
 
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