Subject: Latest bell housing FEA
From: Rotary Engine
Date: 7/2/2007, 10:42 AM
To: AARotary Engine

I knew Larry could get them all down in the blue.
Larry is now working on a weight reduction program.
Probably just a larger radius around the out side.
Should save about a 1/2 pound.


Part of the oil seal leak problem is the current plate and the PSRU are not
positively positioned concentrically using  dowel pins. Universal good practice
for bolted gear boxes, bell housings and rotary engines for that
matter.  Larry's new Rev J bell housing is going to address that problem
as it will have a machined pilot bore for Tracy's PSRU.

Furthermore the PSRU bore face will be positively parallel with the
aft face  of the engine within half a thou. Currently ANY variation in spacer
length can  cause this problem.

I have come to the conclusion this is the most important
reason for a one piece bell housing.


We will have the patterns any day now so I can get them
in the foundry.

Paul Lamar ...No rotor no motor.

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