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Go Back   Motorized Bicycle Engine Kit Forum > Bicycle Motor > High Performance Bicycle Engine Tips
Reload this Page Expansion Chamber

High Performance Bicycle Engine Tips We all want our bicycle engines to push our bikes faster. Get exclusive engine modification tips and suggestions from us.

Expansion Chamber

Discussion at Motorized Bicycle Engine Kit Forum in the High Performance Bicycle Engine Tips forum. Originally Posted by Egor OK did you lower the intake also? about 1/4 not more, I can never remember ...
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Old 10-03-2008, 07:53 PM
Master Motorized Bicycle Builder
  
Join Date: Sep 2008
Location: black mountain NC
Posts: 107
Default Re: Expansion Chamber
Quote:
Originally Posted by Egor View Post
OK did you lower the intake also? about 1/4 not more, I can never remember who asked these questions. LOL. The intake is a big one. Have fun, Dave
yeah I think its one of the first things I mentioned above :-)

have a great weekend
JAK
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  #122 (permalink)  
Old 12-01-2008, 10:04 AM
jasonh's Avatar
Master Motorized Bicycle Builder
  
Join Date: Jun 2008
Location: Longmont, CO
Posts: 1,076
Default Re: Expansion Chamber
Bringing this one back from the dead....

If anyone's interested I've found another piece of software for designing expansion chambers. Says it works for motors 30cc's and up. Only problem is it costs $40

Just an FYI.

2 Stroke Wizard Expansion Chamber Design - info

I'm also curious if anyone has done the required measurements for these design programs on their 70cc HT motor...
Last edited by jasonh : 12-01-2008 at 10:07 AM.
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