----- Original Message -----
Sent: Wednesday, June 20, 2007 7:19
AM
Subject: [FlyRotary] PP construction
methods
Greetings,
Â
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.Â
How are the
ports installed in the factory PP housing?Â
Â
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? Â
Â
Cheers,
Rusty
Â
Rusty,
Â
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.
Â
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.
Â
FWIW.
Â
Â