Chassis Stiffening foam (Auto Foam)

[ManwithSupra]

Has anyone had any experience with it or has done it on the Supra?

I have read a few reviews and it seems to be a good basic way in increasing chassis stiffness without adding too much weight,

 

I guess my question is will it improve a car which already has a seam welded chassis and a welded roll cage?

I'm guessing it will to some extent, but will it be worth the extra (be it small) amount of weight?

 

http://autofoam.net/autofoam/autofoam-application/

 

 

Keeping the chassis as stiff as possible is a must on the track, therefore while my car is already pretty stiff, I am considering it.

Edited March 16, 2015 by ManwithSupra (see edit history)

[Alex]

Sounds like snake oil to me...if the plan is to add tensile pressure internally to the structures then they'd have to be well sealed, yet accessible to get proper coverage. Then there's the question of exactly how much force/load some builders foam can take?

[mellonman]

Do it your self with expanding foam and see , You could do like a test peace and see if its going to work or not

[johnny g]

I wonder what the net effect of the decreased laptime from the chassis stiffening would, offset with the weight of the extra foam. Is it still an overall improvement?

[Digsy]

Sounds like a mis-interpretation of how a honeycomb laminate works in bending. You can retain most of the bending stiffness of a solid bar by just having the material in the outer edges as this is the material that takes the compressive / tensile loads. The material in the middle does comparatively little, so you can make a composite bar with proper metal on the outside and a filler material in the middle to maintain the gap.

 

For something like a chassis, the hollow sections don’t need a filler as they are already self-supporting when hollow. Unless the foam itself is seriously rigid in itself and very well adhered to the surrounding metal, then its not going to add a lot of stiffness, IMHO.

 

Also, its going to knacker any drainage, which will promote corrosion. And filling crumple zones isn’t a good idea as they are designed to, um, crumple. Anything in there that partially fills the volume is going to reduce the crumple distance which will increase the deceleration forces on impact.

[ManwithSupra]

I dont think it will make a big enough improvement to my car, not to mention it will be right hassle for repairs.

I brought it up as I was reading one of the posts on the Time attack blog where they mentioned it and it got me thinking.

 

http://www.timeattack.co.uk/chassis-stiffening-basics/#sthash.jw24o7tN.dpbs

[Tricky-Ricky]

So autofoam is supposed to increase chassis rigidity by injecting expanding foam into the hollow sections of the chassis LOL, I think they should stick to sound proofing, I would want to see some laboratory tests done on round and box section tube with and without the foam, as said snake oil.

[Chris Wilson]

I have been wanting to use this for weeks, my chance is nigh: