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Old 06-23-2011, 01:53 AM
zean zean is offline
Motorized Bicycle Elite Member
Join Date: Dec 2010
Location: california
Posts: 176
Default Re: Custom Frame For Thumper Motor

Boy howdy, that bicycle is good looking. More importantly it lifts the front wheel off the ground from a stand-still and runs cool all day at 45mph without engine shroud and without fins on the flywheel. It's not legal, but it's a lot of fun. The big block bicycle engine does that run cool because it doesn't have to work as hard as a 49cc and therefore operates more efficiently? I can feel your enthusiasm with this build, which I believe would sell very well in the world if mass produced starting out in a garage. This bicycle reminds me of a saying back in the sixties regarding a 426 hemi and a 440 six-pac off the line: "there's no replacement for displacement".
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