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

I think Tracy is headed in the right direction.....He will have a

"universal" product which will satisfy those wanting 2.17 OR 2.85 gear
ratios, and thanks to Paul Lamar's efforts, the casting concept looks

great!

It looks a lot like a Ross redrive, which isn't a bad thing.  Watch the
orders pour in !  Paul Conner

Dan Ruggirello wrote:

Paul,
What is the status of the ultimate bell housing?

Dan

Its on hold. Tracy has some investment in NC machine tool programs that 
he is reluctant to have re written. Can't say I blame him too much.  He is 
going to have to do it sooner or later as the RX8 engine redline is 9500 RPM 
and people are going to start to wonder why they can only get 6500 RPM out of
their RX8 engine :) 

Here is the 3D again for the new guys.
 
Paul Lamar
 
The AirCraft Rotary Engine NewsLetter.  Powered by Linux.
ACRE NL web site. http://home.earthlink.net/~rotaryeng/            
Copyright 1998-2002 All world wide rights reserved.