Today had a failure of my RD-1B gear drive.  It couldn't have
happened at a better time, I was just taxiing off the runway at my
home airport.  I just finished flying 200 mi. to Santa Paula to help
Paul with the getting of Mike Wills airplane back into the air.
Flight home was otherwise unevenful and beautiful.  I didn't bother
taking it apart, but will do so tomorrow.  Feels like I may have
broken the sun gear pin again but will have to wait until tomorrow
to be sure.  The strange thing is that nothing particularly stressed
it.

Sorry there is not cause I can report... a little suspense until tomorrow.

--
David Leonard

Turbo Rotary RV-6 N4VY
http://N4VY.RotaryRoster.net
http://RotaryRoster.net

We had a big go around about that years ago.
I know you had that happen before. Do you remember
what changes you made?

You are on the cutting edge Dave with that high power turbo.
Michael Hart, You might need to add another pin on yours.
If necessary send it to me and I will have Jim Poole do it.

Paul Lamar


By the CAD drawing, it appears that one 3/8 inch pin is all that transfers
engine torque between the sun gear and the shaft. In my mind, a NA engine
might not stress this but a turbo engine is applying a lot more torque to it.

Dale Davies