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Old 08-14-2010, 12:45 AM
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scotto- scotto- is offline
Custom 4-Stroke Bike Builder
Join Date: Jun 2010
Location: Ridin' inSane Diego, CA.
Posts: 6,504
Wink Re: How fast will a beach cruiser with 49cc 4 stroke motor go with a 155ib user on it

Faster than mine, that's for sure....I'm 181 right now. But mine will max at about 34mph with a 44t rear sprocket on flat ground with a (20+ mph) tail wind....on a good day......a very good day

A lot of it really depends on the throttle position however.....the air pressure in your tires also makes a bit of difference....many factors and not all 49cc 4-stroke engines are created equal, nor are their transmissions. Is it a Honda or a HuaSheng? Or maybe some other manufacturer? What size tires are you running? Straight pipe or muffler? Altitude? A fairing perhaps? Gearing?
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Last edited by scotto-; 08-14-2010 at 12:56 AM. Reason: factors
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