Rick Girard wrote:

Paul, I'm new to this (rotary's and gearboxes) and so far I'm 0 for 1.
I'm having the engine rebuilt, and now I need to address the Ross
gearbox.  I have a 2.15 (2.17?) gearbox built in 1993.  So far as I know
the gearbox is exactly as it left Ross, as the engine to which it was
attached had never run.  I have measured the end play of the input shaft
at .408" (+/-.002 for caliper accuracy).  This is not a misprint, I know
the difference between greater than 3/8" and greater than 3/64".  In my
local inquiries I have been advised to fix the end play and improve the
oiling.  What's the consensus of users of this PSRU of their
experience?  

Thanks
Rick

Wow! That's a bunch. They are a bit hard to take apart but it can be done.
I think you need to drill out a pin on the prop flange. You will also 
need to add a thrust bearing. BTW the ratio is 2.17:1
Some people have good luck with them. You need to idle at least 2000 engine RPM or so
to keep them from rattling.

Paul Lamar
 
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