Finn Lassen wrote:

I'm considering selling my RV-3, buying a boat and using the Ross drive
as an anchor.

Seriously, I'm going to try to fix the Ross drive at the lowest cost
possible.

My current plan is to use a 2" long sun gear, get the input shaft turned
down from 1.44" to 35mm to fit the thrust bearing Tracy is using. Make a
simple 3/8" alu plate for the thrust bearing to rest on and to hold the
oil seal. I think I may even be able to avoid machining the rear of the
bell housing bulkhead by using the mounting bolts to adjust the thrust
plate 90 degrees to the shaft (plenty of RTV or a silicone baffle
material mat between bulkhead and plate).

Finn,  Make a drawing of this.  If you do, I think you will see that the
plate section supporting the bearing will bee too thin after putting in the
counterbore for the seal.   I would also encourage you to machine flat the
bellhousing instead of the "adjustable" setup.  Too many things can go wrong
there.

Tracy Crook
tcrook@rotaryaviation.com
www.rotaryaviation.com

 
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