Originally Posted by Ah Clem
They were pretty well cowled in on the Fly'ems. The Zero especially. They also came with mufflers installed, which increased the head. The issue on the BD-5 cooling was that is was a pusher, so no air flowed over the cylinder unless the ship was moving forward. Again, it was glass-filled nylon, not an epoxy matrix. CF was still in the future and Testors would not have opted for that from an expense standpoint.
Thanks for the clarification, Ah Clem. Having never disassembled one, just curious, but do they have say, bronze bushings for the crankshaft?