Hi, Paul....after disassembling my Ross PRSU, it appears that it is

in

fact, a 2.85 to 1 ratio,

because it does reverse the direction of rotation.  My next question

is,

what direction (clockwise

or counter-clockwise) does the flywheel rotate when viewed directly

facing the flywheel?  Thanks

in advance for your reply. Paul Conner, Mobile, AL

Paul  Have another look, maybe count the turns ratio. I think you will

find

that if your drive reverses the direction of rotation you have 2,17.
Ian.>

Thanks for the advise, Ian.....I turned the center shaft, and counted the

rotation at the prop hub. Just slightly over 2 revolutions.  I guess that
sums it all up....If it walks like a duck, and sounds like a duck, it must
be a 2.17 ratio redrive.  Sure glad to put that one to bed.  Thanks again.
Paul Conner

 
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