Hi Paul, we meet briefly a couple years ago at OSH.  I have about 250 hr. of
flying on my project and a new web page at www.netlynx.us/sahobby  I broke
my Ross redrive a year ago and I'm looking for some inspiration to get back
to it. Thanks Mark Kirkpatrick

What part broke?

Paul Lamar ...No rotor no motor.

  I would use it for a boat anchor and go buy one of Tracy's.
  Ken

I love those nice Ross castings. The Ross is the lightest
box around. I would dial indicate the ring gear for run out
and if that was OK I would fix it. It has too many bearings.
All you need is the self centering sun gear and the e-shaft
pilot. Planetary's are intrinsically self centering on the ring
gear and that is how the loads on the gears are equalized,

If you are throwing it away I'll pay shipping.