Paul Lamar wrote:

I think a six pinion ring gear held stationary with power out of the planet
carrier on a A4OD 2.17 gear set will yield a 3.15 over all gear reduction for an
RX8 based motor.

Huh?  I thought the 2.15:1 and 2.85:1 used the same gearset, and that the
difference was that the 2.17 held the planet carrier and let the prop be driven by
the ring gear, whereas the 2.85 held the rign gear and lest the prop be driven by
the planet carrier.  What were the gear tooth counts again?

Russell Kent

I used to think that as well but I was wrong. Two different planet sets.
And this is not all of them.

Paul Lamar
 
The AirCraft Rotary Engine NewsLetter.  Powered by Linux.
ACRE NL web site. http://home.earthlink.net/~rotaryeng/            
Copyright 1998-2003 All world wide rights reserved.