Jim and all:

Back on the T/M crank bush, might have been steel/iron, really I don't remember. But I'm glad someone got some good ones. None came to Sheppard AFB while I was there. These were the really early ones, possibly the later ones were better.

Green Head K&Bs. I flew the 0.19 and the 0.29 in A and B c/l speed, never had a crank break. Cooked a few with a lean needle, though.

Fox? Attached picture shows the bottom of a Fox case with a hole made when the crank broke. Second picture is the guts after disassembly.

Bill.