I am going to keep the ultima for the time being, I am going to soundproof and carpet the cockpit, one thing i have thoughtt about doing is sound
proofing all the out of sight and dry voids i can find,my question is (don't laugh)would loft insulation be ok???? it's really easy to work
with and can be pushed and compressed into gaps, as I said it will be out of sight and should really have a big impact on road noise, I have actually
filled one of the voids and when you tap the outside skin in the car it is solid rather than echoy(?) these cars really are noisy!!!! also thought
about filling the doors with the same stuff as they will be sealed,
any thoughts???
Dilley.
[Edited on 19/5/07 by dilley]
Have you ever thought of using the squirty type foam from diy shops?
Parrellel designs use it in there side sills.
Thought of that bu you never know where it is going to end up, also if you over do it it could deform the outer body work or I could end up with exploding rivets!!!
Loft insulation may be OK but surely it's more suited for preventing heat loss rather than soundproofing.
Have a look here, it may give you some idea of the areas you could consider
treating and the type of materials you could use.
Give em a call, get their opinion and as much info out of them as you can and then go for a DIY solution (or even get them to do it if they're
cheap enough..... which I somehow doubt 
)
Phil
Soundproofing required dense materials. Also you can put those thin sticky pads on panels to stop them vibrating.
My Land Rover soundprroofing kit is made from a dense rubber sandwich with closed cell foam between them. The other stuff on the bulkhead, is a thin
dense rubber sheet sandwich with a thin layer of lead sheet inbetween.
Good soundproofing is quite heavy. My Land Rover kit weighed in at about 60Kgs.
Cheaper stuff can be used like the dense hairy felt stuff.
Try:
Linky
Roof insulation is quite heavy,fire proof and if it is pressed becomes quite dense???
Hi Dilley
I've done work for a company in Colchester called Sound Attenuators.
They favoured rock wool in their sound proofing panels.
It's denser than f/glass.
One prob I do see is that if the stuff gets wet it will become heavy, and take for ever to dry out.
Paul G
I will have a look in Ridgeons, 1 locost Ultima coming up!!
quote:
Originally posted by dilley
Thought of that bu you never know where it is going to end up, also if you over do it it could deform the outer body work or I could end up with exploding rivets!!!
.........I used some under a 1/4 ton hot tub and it lifted it 10mm!!!!!!
quote:
Originally posted by dilley
1 locost Ultima coming up!!
how about upholstery foam? can get various densities. can be pushed into small spaces. Get the CMHR foam as it is fire retardent. Also cheap from a foam converter company.
dynamat (used for sound insulation in cars with load sound systems) it stiffens the panel, and is only 3-4mm thick. i think its got self adhesive
backing, so take it out the packet, cut to shape and stick it down.
speak to a car audio shop
on top of that, i'm told normal house carpet with foam backing does a really good job, but never tried myself...
[Edited on 19/5/07 by blakep82]
When I had my transit van I used vynil flooring tiles to stop the panels booming.
They are self adhesive , very easy to shape. and are cheap
Hope this helps
Regards Kipper.
I would go for density , but of course that adds weight.
I used carpet tiles, can be attractive finish, easily cut , durable dense and can be attached with contact adhesive.
Just dont put near exhaust pipes etc
Dynomat is soooo expensive.... with hind-sight I'd use floor tiles.
Steve
dynamat equivalent on ebay 50 sq feet for £50, didn't think that was too bad.
Another vote for Dynamat here. I used 2 of the little triangular packs you can get in Halfords and it changed the mini from not being able to talk at all, ie you had to shout even at 45 mph, to being able to have a discussion at 70+. Oh, it is self adhesive and easy to cut. Just make sure you get it right frist time, as it doesn't like sticking twice.