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Old 06-03-2012, 12:48 PM
DaltonST DaltonST is offline
Motorized Bicycle Newbie
Join Date: Jun 2012
Location: Houston
Posts: 4
Post Greetings from Texas


I am building my first bike, a retro beach cruiser with a Skyhawk kit. My goal is not to have the most beautiful, unique, or fastest bike, but rather to build the smoothest and quietest (and of course reliable).

In lieu of using thin lead sheeting between the tubes and the P7 epoxy filler in order to dampen vibration thru the motor mounts (special thanks to Bikeguy Joe for his wide and deep knowledge of this subject), I just ordered 1 square foot of 'Sorbothane' Vibration Damping Sheet Stock (1/10 x 12" x12"). Supposedly in absorbs 94.7% of vibration. It is much more expensive than lead sheeting ($17 for my piece), but there will be a lot left over for future projects. Stay tuned to find out if it was cost-effective viz a viz lead.

I am also looking into lightweight vibration absorbing foam applied as an expanding liquid to fill the tubes and handlebars in lieu of using lead shot. Haven't found the best product so far, but the internet is vast, and I am in no hurry since I will have only one chance to get it "right".

Finally, in order to make my bike look "less motorized" from a distance, I am working on how to create a custom low-profile gas tank that sits under the top tube rather than on top like a motorcycle tank.

Thanks for reading this.
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Old 06-03-2012, 01:13 PM
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biknut biknut is offline
Motorized Bicycle Elite Member
Join Date: Sep 2010
Location: Dallas
Posts: 6,280
Default Re: Greetings from Texas

Welcome to the forum from Dallas. Happy motoring.
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Old 06-03-2012, 05:52 PM
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2door 2door is offline
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Join Date: Sep 2008
Location: Littleton, Colorado
Posts: 16,222
Default Re: Greetings from Texas

Sorry, we don't allow members from Texas..........................

Only kidding. We have a lot of Texas members here. Welcome to the forum.

Good luck with your idea about vibration absorbsion but I'll need to warn you that it's been tried before. Many different materials have been tried; rubber, urethane, mouse pads, rubberized tape, etc, etc. The problem is that you are not eliminating vibration, which is an inherent product of a single cylinder, 2 stroke engine, but only transferring the vibes to the engine mounts and mount fasteners.

We always suggest that the engine be mounted as solidly as possible with no resilient material between it and the bike frame.
Good luck however, and let us know how the material you've chosen works for you.

Age and Treachery Will Always Triumph
Over Youth and Skill & "Charlie Don't Ride"
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vibration dampening

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