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Old 01-04-2013, 12:14 AM
Nashville Kat's Avatar
Nashville Kat Nashville Kat is offline
Motorized Bicycle Elite Member
Join Date: Apr 2009
Location: Jacksonville, Florida
Posts: 1,403
Default Re: engine and frame question

There are several ways to make a motor quieter-

1. Use sound dampeners- they go under the engines outer covers- sometimes even over the motor if there's enought crank clearance- you can get themm from vendors here for about $15 or make them yourself, using the covers themselves as a tracing pattern-

some people use just cardboard- I've used styrofoam-

here's some of my old videos about it:

Installing sound dampeners

50cc vs. 66cc sound comparison

2. You can add length onto the muffler- a long poo poo pipe is a bit quieter than the stock pipe- several other types in between- try Gasbikes

3. You can put on a larger gear (smaller back sprocket i.e. 36 teeth) which makes the motor relatively less quiet and less vibration- because you run at a faster cruising speed at fewer RPM and that can really make a difference

As far as the frame- generally womens frames are harder to motor, so use a man's frame if you can- I like a modern cruiser frame for motor and gas tank clearance- it's a bit laidback so you're not leaning awkwardly too far forward at higher speed- BMX or high rise bars help there too- but a lot of people do use diamond mountain bike frames.

Last edited by Nashville Kat; 01-04-2013 at 12:19 AM.
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