4 stroke 5 speed home made creation aka wobleybike

Wrench

Well-Known Member
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Nov 14, 2018
Messages
5,651
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so cal
Your friendly neighbourhood base head crack smoker should have a ready supply in stock...lol...DAMIEN

Ps...They call it a "choy", slang expression for Chore Boy brand...lol.
I only use the best "Chore Boy" Check out these Crack Pipes
DSCF7680.JPG


Crackcase Air Oil Separators, their sealed under the hose fitting so the "crack" oil don't get into the bicycle frame
Any crackoil in the seatpost crackpipe gravity drains back to the Crackcase :LOL:
 

Sidewinder Jerry

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4:56 AM
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Mar 14, 2011
Messages
3,885
Location
Rockwood, TN
i have 26 inch inchers
Here's how speed is calculated:

MPH=(RPM X Wheel Diameter x Pi) ÷ (1056 x Total Reduction)

(6500 × 26 × Pi) ÷ (1056 × 18) = 27.9 mph.

So as you can see from the math your phone GPS was off or you were actually turning 8145 rpm or your reduction is actually 14.36/1. The only way you the GPS would be correct for 35 mph with the data you provided is if this was a down hill speed. These 4 stroke 30ish cc engines only have around 1.5 hp. With that low of an hp about all you'll squeeze out of them at level ground speed is 29 mph.
 
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