My 66cc engine, with new expansion champer

Hi there guys,

Some pics of my motorized bike 66cc, with 2900km on it, new expansion chamber

 

[DanielMaia]

Ahaha

Im going to make a video, to you guys see the beatifull sound of this bad *** exhaust

 

[YaJony95]

Daniel Maia You, here??
Your bicycle is really amazing! Off-sure, a Portuguese only can be amazing heheh Joking
Congratulations for your bicycle You deserve it!

 

[Deleted member 12676]

Lengthen the pipe leading to the chamber if you want the pipes resonant frequency to be more in step with your engine.

 

[ken murphy]

pipes

Heres the best pipe I put together,the pipe on the schwinn is the best one yet quite fast.