For Steve Litzell, or anyone who ever saw the insides of the old 2-cylinder Konig FB/FC/FD series. These engines had a two-piece crankshaft center section so that the two one-piece rotary valves could be slipped on (also the main bearing) before the two crankshaft halves were assembled into the middle section of the crankshaft, and held together with a bolt. Looked kind of marginal, but it worked. Even at the low (by today's standards) rpm that they ran, anything that could stand up to the pounding of the D Alky version could hardly be called a marginal design!!

What I want to know is the engineering name for that joint in the middle of the crank. And anything else you care to tell me about it. Oh, and whether you know of any photos of one of those engines, disassembled.