Jerry Hey wrote:

O.K.  Are there proven modifications?  Who is doing them?  Or should
I scrap the  Ross?

Jerry, it's only the 2.17 ratio Ross that needs a thrust bearing because the
other (2.86:1?) produces thrust in the opposite direction which has a thrust
bearing. The other bigger problem is the lack of oiling to the sun gear. I tried
running over 200 hp thru it and it began to eat the gears after a few hours. I
know of at least 5 others that have had severe gear wear. The only ones that
seem to last are low hp. A machinist friend and I figured out how to spray oil
onto the sun gear, and several Ross owners have had this done. I think Dave
Atkins has over 100 hrs on his since the mod. He's putting out close to 180 hp.

I suggest you call Ray Baker (machinist) (206-364-9894) to discuss.

 
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