hi, has anyone tried using this stuff for their seats? if it works, it seems like quite a good option, especially for the money - should fit both you and your car perfectly?

http://www.demon-tweeks.co.uk/catalogue/product_detail.asp?CLS=MSPORT&TLGRP=M003&PGRP=MC017&GRP=MC017&PCODE=MISFOAMKIT

don't know how SVA friendly they are tho...

we have used the two part foam to make various seats in our racecars, including caterham superlights,Also used as the norm in many single seaters, word of warning do not wear any decent clothes when using this stuff it can get very very messy especially if you mix too much cause by god does it expand
also baggy clothes leave intersting results

regards

marc

Macspeedy and I saw this in a cateringvan Friday night at Knock hill. The only problem is to cover the foam. The guy said he didnt Know who did his seats as he bought the car with them in. They weigh nothing and are very comfy. So we ask how to get covers to use for this application? Answers on a £10 note

Lots of gaffer (duct) tape. It's my favourite repair stuff. Sorry I only had £20's so I posted it here instead.

Before you go blowing yer cash at Demon Thieves, have a look here CFS fibreglass supplies. The pack in D.T. is £25.52 for a 2kg pack, at CFS it is £7.21 (both excluding V.A.T.) Found this mob by Googling for 2 part polyurethane foam

Is a cheap alternative the expanding foam you can get in aerosols from DIY stores?

What about the stuff they use for cavity wall insulation. That expands like crazy.

I think the cans from the DIY stores would be an expensive route, £7.99 for a 750ml can from Focus. Dunno if it's the same stuff.
On the other hand, if you look here it has a 'foam eater' advertised which state it will 'remove cured PU foam from most surfaces' so I guess it is the same, and theirs is cheaper than Focus. I would have reservations as to whether it would providse foam in the volumes you would require to make a seat though?

I'm not sure how suitable the stuff from CFS would be - it sets absolutely rigid and is very brittle. I'd imagine you'd want a degree of spongyness.

Kingr

quote:

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Originally posted by Peteff
What about the stuff they use for cavity wall insulation. That expands like crazy.

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quote:

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Originally posted by kingr
I'm not sure how suitable the stuff from CFS would be - it sets absolutely rigid and is very brittle. I'd imagine you'd want a degree of spongyness.

Kingr

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the proper stufff does give a lttle and is not completly rigid

regards

marc

Cheers marc, another factoid to log into the cranium

You can create a lot of foam from the cans the DIY stores sell - it expands to 30 times the can size (according to the label) and certainly sems that way once you squeeze the trigger!

I used a can to fill the cavity in a one piece fibreglass rear door on our Mini Estate. The door was really flexible before but is made it nce and solid - trouble was that the foam actually expanded the door and slightly "bowed" it.

I used one from Wickes to fill a gap when I was doing some replastering. Don't use it if you are of a nervous disposition . I pressed the trigger and almost shat myself . It doesn't keep after either but that's not a problem.

the diy stuff is also not uv stable so will have to be covered else it turns a funny colour and goes brittle

I've heard of some people having covered expanded foam seats in vinyl, anyone have any ideas about this (would it stretch sufficiently, or form well?). I was planning a cross country after it is done so I need something very waterproof. Cheers!

The first time I used the stuff from a can was when I was trying to patch up a bit of rot in my bathroom window frame and ended up with a massive hole.

The foam worked well and stayed in place for three or four years until the windows were replaced - I did cover it with polyfilla to give a smooth waterproof finish, but never had a problem.

The foam in the Mini door is still there and seems to be as solid as when it first set, also, it has never absorbed water as far as I can tell.

For my dad's clubman car we sat him in the seat wearing bin bags, sprayed the DIY can foam around is back and covered it is carpet under-lay. It was supportive and very comfortable!

Andy

have to get Macspeedy over to give it a try for my beast

Sorry for being a spanner I'm a bit confused.

quote:

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Originally posted by andylancaster3000
For my dad's clubman car we sat him in the seat wearing bin bags...

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Hi

I believe Andy is refering to making a seat entirely out of foam/black bag and not an insert for an existing one.

I have done this with my car and the end product is very comfortable, although it may not be to your taste if you don't like the 'racer' look as its covered in black tape!

When making it, you dont need to use a complex pre-made former for the foam. I only used a piece of MDF to support the seat back and a few bits to stop it spilling out over the transmission tunnel, although this depends on the car and the area around the seat.

There should be a pic below showing the end result!

Hope this helps.

Bob

[Edited on 30/6/04 by bccox18]
Rescued attachment M3-1.jpg

Is this 2 part PU foam sandable? This looks like just the stuff to form to a final finish, cover in bondo, sand to 600, then use it as a buck. Anyone tried this before?

What about the spray stuff?

Yes, the two part PU foam is sandable and is easily shaped.
From what I have read on various sites it is good for a base for a mould but needs a coat of some type of filler to get the required surface finish to be used as a mould.

Bob

Okay, I know I'm digging up an old thread, but I was wondering if anyone had any examples of making such a seat. I have a Striker and I just about fit (16.5 stone, 5'10" so most conventional seats don't work too well and the cushion seat, while comfy enough is starting to come apart.

In particular, how long do you have to sit on it to get it to shape and is it and how well do they last.

Simple instructions here, should get you going.
http://www.sjmmarsh.f2s.com/Caterham/Foam%20Seat.html