Thanks Paul.  I asked Tracy about changing the gear ratio a while back,

and he said it would be a

completely different setup to do that.  So I was supprised to see the

reference to 2.85:1.

According to his web site, his ration is 2.176:1.  I'm planning on using

his unit, but would have

liked a little higher ratio. This new bell housing looks very

interesting though.  I expect to

need the reduction unit in the next 4 -6 weeks, so will have to consider

upgrading later.

Bob White

http://www.bobwhite-abq.com

I think the casting can be designed for both with minor machining
changes.

Paul Lamar

Just to clarify,  What I was saying is that the 2.176:1 drive cannot be
retrofitted with the 2.85 : 1 gears  *after* the casting is machined.  I
plan to use the same casting for both 2.176 and 2.85 drives.  The machining
will be different.

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

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