----- Original Message -----
Sent: Wednesday, June 20, 2007 7:19
AM
Subject: [FlyRotary] PP construction
methods
Greetings,
One of the things that's
always bothered me about making a PP housing is leakage. I've heard very
experienced folks say that eventually, any PP housing you make will leak, and
it's easy for me to imagine that happening. I don't think I've
heard the same thing about factory housings though. How are the ports installed in the
factory PP housing?
The other problem with a
conversion is the side ports. I know people fill these with their
favorite epoxy, but I'd worry about that coming loose, and getting into the
rotor. How much would it hurt the PP operation if you just sealed
the ports on the outside of the side housings with a plate where the intake
would have been?
Cheers,
Rusty
Rusty,
I have run my PP on the single rotor for about 25hrs
throug all sorts of heat cycles and never had a problem with leaking. Keep in
mind that my insert is held in place by a flange with two bolts, so the JB
only seals, it does not do the holding.
I certainly would never want to depend on JB for holding
the insert in place.
On your question with the open side port, one of the
side ports was open during the same test period, closed on the outside. Never
observed any negative effect, however, it never ran max RPM. The highest was
5000RPM. I have closed that port now for the next test runs.
FWIW.