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Bob,
Any suggestion that the bridge port flow,
adversely affected the PP or vice versa.
George (down under)
Yes,
I ran the side ports also. I ran the primaries with a polished street port,
the secondaries with a bridge port, and the p ports were tied into the secondary intake runner
only. that way I had a good idle and good low end. Then when the secondaries
kicked in I had a port timing change and it ran like stink. I was runnning a Holley 650 back then.
Bob
Mears
Supermarine Spitfire
-----Original Message-----
From:
George Lendich <lendich@optusnet.com.au>
To: Rotary motors in
aircraft <flyrotary@lancaironline.net>
Sent: Fri, 29 Jun 2007 8:07
pm
Subject: [FlyRotary] Re: PP construction methods
Bob,
!" doesn't seem anywhere
near enough, were you running PP with side ports ?
If PP only how
much power did you get from 1".
George ( down under)
My ports were 1"
dia. if I recall right. Done on a 12A . I had a buddy back then that worked for Kenworth
and he got me some diesel injector sleeves. Even had a tool that would
"swell" the sleeve after it was in place. Then I just filled the entire
water chamber in epoxy. I still had the old manifold so I took a pic.
Thought I would throw in a pic of the new manifold for my 20B. Slightly
different huh! Bob Mears Supermarine Spitfire 
View full
size
View full
size
-----Original Message-----
From:
Kelly Troyer <keltro@att.net>
To: Rotary motors in
aircraft <flyrotary@lancaironline.net>
Sent:
Fri, 29 Jun 2007 4:23 pm
Subject: [FlyRotary] Re: PP construction
methods
Bob,
Do you recall the I.D. of the injection tubes you used and
were you
-- Kelly Troyer "Dyke Delta"_13B
ROTARY Engine "RWS "_RD1C/EC2/EM2 "Mistral"_Backplate/Oil
Manifold --------------
Original message from bmears9413@aol.com: --------------
I built P Ports by just drilling a hole through
the housing, squeeezingin a diesel injection tube, and epoxy fill the
entire water chamber it is drilled through. ran that little motor on the
street for years and it never leaked.
Â
Supermarine spitfire -----Original
Message----- From: Richard Sohn To: Rotary motors in aircraft
Sent: Wed, 20 Jun 2007 8:54 am Subject: [FlyRotary] Re: PP
construction methods
Â
----- 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. 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
Â
Â
Â
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