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Reading another online magazine, there was a discussion about how to quieten roadbed. However, one gentleman brought up a unique subject that I haven't seen discussed here before...noisy Box Cars attributing to the sound level. His reply noted that hollow plastic boxes are noisy and that placing a piece of U-shaped foam, touching the sides, will deaden the rattle and echo. Has anyone else tried this?

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Originally Posted by N&W Class J:

Hmm well I'm going to try it as well.  I have a bunch of left over foam here...can't hurt.

Cant hurt? I don't know about that. Incompatible foam and plastic combos do exist! Better keep an eye over time. If the sock elastic manages to touch plastic I bet you get a reaction there for sure. Great idea but proceed with a touch of caution.   

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