which foam to use to mold seats in the tub ?

[Chris Black]

Since our GT40 will be almost exclusively driven on racetracks, I plan to mold the seats directly in the tub, using the old " sit on a big trash bag filled with solidifying polyurethane foam" method.

Would you have any recommendations as of which polyurethane to use ?

 

[Bill Kearley]

Expensive but have a look at a Dowpac kit or Dow Froth pac 650

 

[Chris Black]

Thanks

 

[Chris Black]

I also found this stuff:

HR-AT Unizell-Schaum

HR-AT ist ein zumindest 91 % geschlossenporiger 2-Komponenten-Hartschaum auf Polyurethanbasis. Der Schaum hat ein Becher-Raumgewicht von ca. 50 kg/m³. Durch seine lange Reaktionszeit ist er auch manuell - sogar in größeren Ansätzen bis ca. 10 kg - gut ver

www.vc-24.de

 

[Ed McClements]

Merlin Motorsports and Demon Tweeks in the UK both sell seat foam kits. At least one of them uses a large bag of poly beads in addition to the two-part resin, which might be better if you're casting a sports car seat, rather than a single-seater....maybe?

 

[Glenn M]

Merlin Motorsports and Demon Tweeks in the UK both sell seat foam kits. At least one of them uses a large bag of poly beads in addition to the two-part resin, which be better if you're casting a sports car seat, rather than a single-seater....maybe?

Yes, I used the bead system and found it to be very good. You start with just the beads in the supplied bag. This means you can spend as long as you like getting it just as you want it, the right shape, support, removing all creases etc. Then you add the resin. The trouble with the mixed foam alternative (I have found) is that you have to get it right very quickly, and it can get very messy. Although it is cheaper.

 

[Neil]

Foam-molded seats are snug fitting so wear your firesuit and Nomex underwear when you are forming the seat. Gain a few pounds and then you won't fit into the seat even with a shoehorn. There is nowhere for perspiration vapor to escape so it might be sweaty and clammy. The foam seats do support your body very well, though.

 

[Chris Black]

we gave it a try this week-end

 

[Chris Black]

 

[Chris Black]

with some cardboard and tape placement to eliminate the undercuts in the tub

 

[Chris Black]

 

[Chris Black]

expanded foam to be trimmed today

 

[Markus]

Just found this - seems to be not that easy.....

Profi seat - schroth.com | SCHROTH Safety Products [EN]

www.schroth.com