I have a Sky Devil which doesn't seem to fit the information given out previously. I think its probably a repro. but it does not have a Serial #
anywhere on it. The exhaust stacks are painted within, and it came in a
brightly coloured red, yellow & black box. It is the "short shaft" version, ie.
the SD-R car racing model, and the top of the backplate has two straight
edges, rising slightly to meet in the middle. The front ball bearing is a Japanese Nachi. What I want to know is - who made this engine, and what
capacity is it ? (keeping in mind the car version was supposed to be a .61
and not a .65) Also, it appears to have a removable prop stud, which I have been unable to shift - any ideas how to unscrew it ? THANKS, BOB