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Message
mike McGee and I were just talking about
my setup, I.e. going from a left turning mount to a right. he pointed out
that this is exactly what Tracy just did with his -4. we guessed that he
didn't change the engine mount geometry, but perhaps offset the vert stab
instead.
Actually, Tracy has no offset in his RV-4 mount, or his
vert stab. He originally had a small wedge type trim tab on his
rudder which worked fine until he changed drives. Now he's moved that
wedge to the other side of the rudder, and it isn't quite big enough for the new
drive and prop. No surprise there I guess. Now, I believe he's
in the same boat we are for his RV-8 mount, as I think it has left offset built
in.
I
would like to hear what you guys say about this geometry. does the vert
stab offset create drag? is one way better than another? will higher
cruise speeds affect the alignment, I know it affects rudder trim?
Kevin Lane Portland, OR
I'd like
to know this as well. As far as I can tell, offsetting the vert stab
is no different than applying some rudder trim, which I can certainly
do. The real question for me is whether the engine offset is any
better than rudder trim, in terms of drag at cruise
speed.
Cheers,
Rusty (making
the TB flange, and fitting the tubes later this
afternoon)
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