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Old 01-19-2014, 06:02 PM
jjvsb jjvsb is offline
Motorized Bicycle Newbie
Join Date: Jan 2014
Location: bc,canada
Posts: 6
Default DIY expansion chamber?

has anyone built or had any success building an expansion chamber from scratch?? I've made several attempts. After doing some research and using Gordon Jennings quick formula I managed to have created a pipe that works (without a doubt ) but havnt had any luck recreating it.
would luv to hear from anyone who has attempted this.
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