A good idea if I needed a new shaft anyway. One problem is it leaves

very

little space for the thrust bearing and pin, only 13mm (unless I

counterbore

into the plate). The thrust bearing Tracy is using is 12 mm thick,

leaving no

space for the pin. I wish I knew how thin that pin can be and minimum

edge

distance from pin to planet gear teeth and from pin to thrust bearing.

I'd

also like to know how much force the bearing applies to the plate (how

thin I

can make it).

Finn

The plate can be as thick as needed and counter bored.
I am sure all the torque is not transmitted by that pin alone. I think
the gear is welded to the shaft.

Paul Lamar

No two Ross drives are identicle but I'm wondering if you guys trying to
press out pins are up against something else.  My Ross drive LOOKED liked it
was pined but it was actually a hole in the gear which was welded up and
ground smooth.  The grain difference made the weld look like a pin .

If the fit is right, a press fit is all it takes on the input shaft.  I
usually weld a couple of spots (it is ugly but is good insurance) but at
Paul's request, I did not weld his.  I doubt that it will ever slip.

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

My thoughts on this is; if it ever slips friction will spin weld it
together. I could be wrong but I am willing to try it.

Paul Lamar
 
The AirCraft Rotary Engine NewsLetter.              Powered by Linux.
ACRE NL web site.
http://home.earthlink.net/~rotaryeng/            http://www.linux.org