Soundproofing Chassis

[Gmg31]

stripped down the chassis today.  All the old sound proofing is very old and tatty so ripped  it all off and the chassis is In perfect condition underneath.  So having looked on eBay there are two good replacements.  Silver pads or black matting.  Anyone got any experience of these products.

[BDA]

Find some closed cell neoprene foam. r.d. enterprises on this side of the pond sells some. I found some locally by checking the phone book. I used a 3/8" thickness.

[LotusJoe]

I used a silver backed closed foam.

[jbcollier]

B-Quiet:

http://www.b-quiet.com/products/b-quiet-ultimate-50sqft

And then put the rdent.com closed foam.

[Gmg31]

Some great ideas there thanks. I've ordered some sheets of neoprene.  I'll post pics on my restoration thread.  Thanks

[Nick in Beds]

What do you chaps use for the front crossmember padding - and the rear y piece?

[Gmg31]

I wasn't going to use anything.  When I removed the shell the only padding was on the back bone so I wasn't planning to add something that isn't necessary.  I'm planning to fit the neoprene matting recommended above, mine will look like the pictures above but black. 

[Nick in Beds]

That's interesting - I was reading an article in the body section on the page linked below - it is a 74 TCS though so might be different ...

http://www.lotus-europa.com/manuals/

[Gmg31]

That's an interesting article.  I had wondered about adding some to the front cross member, I think that's a good idea.  I guess for balance I should add a piece to the Y as well.

[Nick in Beds]

Yes, I think I will too - there is "something" stuck to the body above the front crossmember on mine - not removed it yet, it looks well stuck on ... need to chisel it off and see !!!

[Gmg31]

Oh I hadn't thought to look inside the shell, thanks for that. I'll check it out when it comes back.

[StrawberryCheesecake]

I started searching for light weight sound proofing mat, and came up with this stuff. Any thoughts?

http://www.ebay.co.uk/itm/Silent-Coat-2mm-10-Sheets-Car-Deadening-Vibration-Sound-Proofing-Damping-Mat-/161282941044?hash=item258d366074

[BDA]

If you're thinking of something to go between the fame and the body, I think you really want something bigger and a little thicker - say 3/8". That will fit snug so you shouldn't have any sound problems.

If you're thinking of something to put on the floor, I feel like the mat under the carpet works well.

Thinking about it, my engine is pretty loud so maybe I wouldn't know! 

[buzzer]

This article is what Nick is referring to and there is a cross member piece. It also covers the thickness of material to be used. I am using self adhesive closed cell 13mm neoprene than will compress down down the main chassis

http://www.lotus-europa.com/manuals/misc/body/Optimized%20Jute%20Padding%201974%20TCS%20before%20removal.PDF

[Gmg31]

I was looking at the sound deadening mats but after the advice on this thread (higher up) I bought three sheets of adhesive backed black closed cell neoprene mats off ebay for £60.  It is superb, very easy to fit and looks great.