Yes, the problem is getting the heat into the atmosphere since the heat capacity of any reasonable rim will be limited. That requires a heat-conductive rim like aluminum. We blew tires of alu box rims. I figured that out pretty quickly and switched to deep rims. Not so much for the increased mass, but for the increased surface area. No more blown tires. The deeper the better. I've been using 26mm-30mm depth rims, which works for our purposes. Still, touring in unknown terrain or descending long over 8% grades, I put the wheel with the drum on.
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