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Motorized Bicycle Racing Network > Forums > 2 Stroke Engines 49cc to 80cc > my 1939 Colson 24"
 
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bairdco
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Registered: 03/09/10
Posts: 2

    03/11/10 at 11:58 PMReply with quote#1

i built this bike a few months ago from a pile of rust. it's got 24" Worksman wheels that i got from some old man for 50 bucks. they've got the old bendix coaster and an Atom front drum hub.

the power is provided by a Grubee Starfire GT4 66cc that's been modded pretty heavily.

the obvious distinction is the barrel's been reversed so the carb's in the front and the exhaust shoots out the back.

the head's been decked, intake manifold's been cut down for clearance and ported, exhaust's ported, carb's been polished inside and out, transfer case ports have been cleaned and polished, and that's all i can think of right now.

it's got a 30t steel motorcycle sprocket and a manic mechanic hub adapter.

this bike's got a lot of compression, and even without an expansion chamber or a better carb, it'll cruise 45mph all day, and i've "unofficially" been paced at 51.

i'm working on another project bike, and i hope to get 60+ out of it.

and some documentation, too.




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