Gerald,
Bending the crankcase that is aluminum cast will, in my opinion, cause the crankcase crack somewhere.
I do not see the indication of this as there is no weird leak anywhere.
I would see this leak as I was watching the engine from all angles while running it recently.
Everybody,
I got the ground RPM of 8,300 - 8,700 on 12x7 APC and my RToucan weights now 66 oz.
Is this ok? I mean these RPM on this prop for the plane weighting 66 oz. on 66' long lines?
Perhaps for THIS engine as it is now, on THIS prop and THESE lines I need 59 oz., 580 in^2 plane?
Maybe the plane weighting 66 oz. is simply too heavy for the engine as is?
What I am trying to avoid is three months of trying, erring, writing e-mails and swearing instead of one radical move, namely, using the lighter plane.
Well...