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Good way to dampen tonearm?

I am in the process of replacing the stock Klotz wiring harness in my Rega RB-900 with the single-piece "Incognito" wiring harness. I have been thinking about adding some damping material inside the tonearm tube, and considered trying a couple of shots of expanding insulation foam.

I'd appreciate comments about the wisdom (or lack thereof) of the foam treatment idea. I am concerned that the chemicals in the expanding foam might be bad for the dielectric on the very thin Litz wire inside the tonearm tube.

If anyone has any ideas, or personal experience, with ways to dampen arm tubes, I'd appreciate getting your commentary.
sdcampbell
onhwy61's avatar
onhwy61
5,217 posts
 
Why are you even thinking of adding dampening material to the tonearm? Does it noticeably ring when you tap it? I've read good things about the wire upgrade, but I would otherwise leave the arm alone.
bob_bundus
1,834 posts
 
try to find an old Stereophile 'analog survival kit' tonearm damping wrap
mayanitis
3 posts
 
Taken from the web

"conservation of energy = Within some problem domain, the amount of energy remains constant and energy is neither created nor destroyed. Energy can be converted from one form to another (potential energy can be converted to kinetic energy) but the total energy within the domain remains fixed. "

all the energy from bearing chatter ,the spindle bearing friction, the stylus dragging through the grove etc has to go some where, my own intution (thats as good as it gets for me)suggest this is easily conducted throughout the turntable and into the tonearm etc, a further guess of mine is that some of the materials contemplated (foam for example)dont really get rid of it but are only to varing degrees conductors of this unwanted energy
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