Paul,

Actually I was talking about the bell housing/s sorry , I'm not being
clear.

Prototyping,
The side housings I will look at later on. Prototyping side housings is
time
consuming and I don't have the time at the moment, maybe later on this
year or early next year for the side housings.

Off the bell housing, on the side housings they did not seem mind about
things like exhaust ports, they have done other car type specials such as
blocks, heads, intake manifolds etc, so water jacket and the like do not
appear to of any concern.

I have bought a few of those rotary renesis engine from Rupert, so
once the new year quietens down a bit, actually a lot at the moment
then I'll be able to look at the side housing senarios..

In the meantime lets deal with the bell housing.

Regards David Gaze

 David,
I have done all the design with Butch, who did all the FEA on it and I made
the pattern.
The big problem is getting thin enough and strong enough with sand casting -
mine is 5 to 6 mm.
Then there is the problem with getting the Al to flow over distance in such
a thin section. Then there's the problem of porosity of such a thin section.
The Al has to be heated beyond recommendations for it to retain sufficient
flow ( read heat) over distance in thin sections - this walled casting which
aren't pressure cast are a nightmare!!

But there's more! the real problem is the machining, I can do the casting at
a reasonable price, but the machining costs (especially CNC) are outrageous.
Then there's the postage and handling cost to USA - ever posted something to
the States -again outrageous.

Our design ( Butch and myself) is strong, is a reasonable weight, includes 3
positions for starters, allows for 2 different starters, but I can't supply
them at a reasonable cost! It is also caters for engine mounting at the
sides, will accommodate 2 different PSRU ( Tracy's and my own design). has
additional supports for Aerobatic work

You will notice Tracy does his own machining in-house, I don't wonder why!
George ( down under)



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