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Sound Dampening

Trog is loud! A lot of the noise is from the tires, engine, fan and transmission. All create a racket that at highway speeds will certainly cause hearing damage without hearing protection. I got some Damplifier, butyl rubber sound dampening material from Second Skin Audio that I’ll use to cover the inside of the body.


Damplifier is good stuff, all butyl rubber vs competitors dampeners made of asphalt that can delaminate and smell like hot tar on hot days. I’m also using Spectrum liquid sound dampening as an undercoating when I redo the back cabin.

Sidewalls and roof will get some sort of insulative sound dampening in addition to the Damplifier. I think the Second Skin product in this category is a little expensive for what you get, so I’m still looking for the right stuff.

Today I applied the Damplifier to the front cabin. Applying the stuff is pretty fun — you don’ thave to be that exact with the cuts and it smooshes down easily with a wooden roller. I applied double layeres of the stuff to the bigger panels which seemed to have more “boom” when thunked. It took about 50 sq ft to do the main cabin:

It’ll take another 160 sq ft or so for the rear cabin. Maybe more.

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