Andy,

I think the reverse crank only applies to takeoffs for stunt. If you are relying on the torque to prevent the plane from rolling in on you, once you go inverted the torque would work against you.

I think a Brodak "Flying Clown" might work with the Big Mig .074 if the plane is built lightly.

I have converted a BigMig .074 to CL by installing a BigMig .061 CL venturi in the .074, but I have not yet run it. The throttled version with the throttle wired open should work well though. Good luck with your diesel version.

George