The new mold looks good George! Keep after it,
Bill Jepson

Thanks Bill ,
Like I said previously I used 5mm Core cell to get a  even thickness
through
out (with surface layer of glass) - It came out pretty good. However
it
warped badly as it cured over a couple of weeks - I managed to pull
it back
though and temporarily reinforced it internally, until I can  get all
the
support structure around it, like the flange ( done)the centre face
ring
(done) and the face stiffeners (being done).

There's always draw - backs and dramas, especially with  such a light
thin
pattern made from a composite, but hopefully I'm on top of it now!

As Paul said there is a lot of flexibility, thanks to Butch's problem
solving abilities and believe me when you get past the very basic
bellhousing design parameters, the design starts to get tricky.

Tolerances are extremely tight in some areas and Butch's design and
CAD
ability have been invaluable - I couldn't have gotten to this stage
without
his obvious skills in engineering and design.

The flexibility built into this design is it takes
1. Tracy's PSRU - I feel sure it would accommodate the Ross as well.

2. It takes the Aussie design PSRU, mind you the Aussie design has
been
modified since Butch got hold of it. It would be fair to say it a
result of
a joint effort now, as is the bellhousing.

3. It doubles as a engine mounting platform.

4. It has the facility for 3 starter positions - 3, 6 and 9 ( O;clock
roughly)  and can accommodate different starters, Manual ( Tracy's),
Turbo( Aussies), Auto, Subaru ( maybe)  and another one Butch has
identified.

5. It can accommodate both manual flywheel and auto flexplates.

6. Hopefully we can incorporate the facility for much narrower cowl
requirements ( still some problems there). A good die cast pattern
would
solve this problem.

7. Mounting points for PSRU stiffeners in Aerobatic use.

Just tell me if we have missed any requirements ?

One of the big advanatges is,  Butch has the computer generated
engineering
facility to test designs to predetermined limits with all the
variables of
aircraft demands - this takes a lot of guess work out of the project
and
it's fair to say that we have had our share of failures.

George (down under)

George,  It is important to keep the front engine mounts down low.   On
the S beam, the Barry mount flange is about 6 inches  below the thrust
line.  If the flange is higher, there probably will be interference
problems between the exhaust and the diagonal brace.  Paul or Butch
could Rhino check this.  The diagonal  will run below the oil pan
flange.    Jerry

We will address that with the tig welded rubber bushing custom adapters that will be
bolted to the bell housing. The flat surface on the sides of George's 
bell housing are just a mounting point for these custom adaptors.

Paul Lamar
 
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