Paul

Do you have any specific data on the prop weight and the moment of
inertia Tracey Crooks unit can reliably handle? I have been looking
at various variable pitch/electric constant speed setups and am
wondering what is possible?

Bruce Cosgrove


Do you have a six pinion or an older four pinion. The six pinion ought
to handle just about anything provided the input shaft has this
modification. You can add extended point set screws to the input
shafts that already have shear pins. It will add greatly to the
torsional strength.


I would avoid metal props however. The Hoffman and MT
German Elect Var Pitch are wood covered in fibre glass.

Paul Lamar


Thanks for the info Paul.
I have the 6 pinion 2.85 RD1C unit and will now look at carrying out
suggested modifications

Bruce

Dave McCandless is on the OZ west coast and you are on the  OZ east coast
too bad you guys can't get together on this :-)

Also check with Neal Unger. Last time I saw him he was working on
gear boxes. He might be able to help. It would give his guys some
real world experience.

Paul Lamar

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