I mentioned in the last post that I have found what I think will be some good materials for resisting the transfer of heat out of the sole of the shoe. I read in another thread about these aerogel insoles which are reasonably priced.
I then read a review that said that they really did help keep your foot warmer and that they wear for a reasonable amount of time. So I did some research on aerogels since I have heard of them before as they are used in the audio field to make speaker cones out of. It turns out that this family of materials have the highest insulation value per unit thickness of any material.
So I decided that they would make good foot bed liners in my winter cycling shoe project. I then did some more research and found a company that makes industrial aerogel materials for insulation of pipes and other things.
I think the Pyrogel 2250 would be just about the most perfect thing to make an insulator gasket out of and place under the glassfiber/epoxy plate. So I'm hoping that I can get a small sample from Aspen aerogels of this material to use. I think this approach of using a glassfiber compostie plate and aerogel insulator and aerogel insoles will stop a lot of the heat transfer out of the shoe from the pedal. At least that is my hope.