dampening idea

Tim Mills · #1 (**permalink**) 10-23-2009, 12:55 PM

Hello everybody i will be starting my new build soon an have already gotten some great ideas from you guys. I thought of this idea the other day. i know these engines cause alot of vibration so i was thinking expando foam in the frame? My bike alraeady had holes made to run wires for taillight and headlight so i could actually fill most of the frame with this foam. Let me know what you guys think

Venice Motor Bikes · #2 (**permalink**) 10-23-2009, 01:05 PM

That sounds interesting... but I don't know if it will deaden the vibes tho?

pedro5189 · #3 (**permalink**) 10-23-2009, 01:09 PM

balance the crank

philymitch · #4 (**permalink**) 10-23-2009, 01:09 PM

I have used expanda foam in my frame and my handle bars. using the foam in the handle bars reduced a lot of the vibrations in the bars. filling the frame with expanda foam really helped with vibs and noise from the motor. the foam will absorb alot of things you will be surprised hope this helped you.

xlite · #5 (**permalink**) 10-23-2009, 01:49 PM

Two of the guys I built bikes for tried filling handlebars with Great Stuff. They both raved about the improvement but I saw no difference at all. My buddy who also rides these could not tell which bike had the foam in it during a blind test. Another fellow filled his tube with sand and it did make a difference.

The almost non existant mass of foam should not have any significant effect on vibrations.

skjjoe · #6 (**permalink**) 10-23-2009, 03:17 PM

be very careful not to get it in the bottom bracket that stuff is hard to get off.And i have heard of the stuff expanding into the bb and locking up the bearings.

**BarelyAWake** · #7 (**permalink**) 10-23-2009, 04:51 PM

Sprung seat an gel grips, yer only hope lol

bandito · #8 (**permalink**) 10-23-2009, 05:07 PM

Youd be surprised how well a $20 suspension seat post helps and I weigh 215. I think GOD created gel grips just for folks on 2 wheels. I know theres better seats out there but Im satisfied with mine its leather and wide for the rear plus it has good padding.

philymitch · #9 (**permalink**) 10-23-2009, 10:41 PM

i did my frame when it was being built so all excess was cut off. no problems with my bearings. i say do it you wont regret it.

Tim Mills · #10 (**permalink**) 10-23-2009, 11:31 PM

Hey guys thanks for your quick responses i will probably try all your suggestions and since i have to break my bike down to send it home i will jus be patient, paint it an all that good stuff i would rather take my time the first time so i will have more time to ride thanks guys