The guys in the C/L speed forum said that it can be used on cranks too, specifically the crankpin.
I have seen "black" cranks in r/c car engines...it's a wear and corrosion coating...what treatment is that?
I also found it difficult to believe the part of the stunter continuing to fly w/o wings
It musta been going reeeellllyyyy fast, huh![X(]
That's something the C/L speed guys should try, huh? Maybe they could go even faster without wings? (is that centrifugal or centripital force? )