The only missing information I need to know about Brian is the exact
section diameter of the O-rings shipped to you. I would like to know
who supplied them to Tracy so we can avoid that source but so far
he is not fourth coming with that info. I have in the past recommended
only Creavey as we had some bad results with McMaster Carr.

Again I am sorry about the bad things I said about you after reading
the no pistons post.

Paul Lamar ...No rotor no motor.

Paul,
Someone bit the bullet and sent Creavey some housings to establish the
optimum size o ring - which didn't in fact need to be pre stretched over a
wooden former. I know I had some problem at the time and had to send some
back.
I can't remember the exact size by Creavey now have these sizes recorded for
demand from other customers.

Personally I think Tracy 'may' be using the old sizes which may not be the
optimum size. A slight pinch would cause the outer sheath to split as the
inner silicone would expand causing a tiny pinch to expand into a longwise
split - my opinion only.
I think if Tracy is in fact using the Creavey product - it's about the best
that's available, as you have stated many times before.

Sadly a small error in sizing could be the source of the problem.
George ( down under)


------------------------------------------------------------------------

The problem is a function of how the rings are shipped. NOT the exact
circumference or size. Creavey ships the right size.

The large ring is about 11 inches in diameter. When I get them from Creavey they
are rolled up in a six inch diameter package. **** THAT IS THE PROBLEM ****.

The purpose of placing them over the wooden form is to get rid of
that coiled up set. Not to change or increase the circumference.

http://www.rotaryeng.net/O-ring-size2.html

I have suggested to Tracy that he ship them on a cheap vacuum molded
plastic carrier simulating the plywood form that will hold them flat
and be of the correct shape.

I received no conformation or response from Tracy to this idea at all.