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Ed,
The other list said that
there was a possibility of boiling the coolant in the cavities near the plugs
with the plugs up install. Did you do the modification of removing some webbing
to prevent that, or, do you find boiling no problem?
Ben (seriously considering
plugs up)
Acroduster Too
20B {under
construction}
----- Original Message -----
Sent: 06/25/2007 5:48 PM
Subject: [FlyRotary] Re: Method of
killing power??
Ed, It is interesting to note that the Curtis-Wright rotary
engine had
the long axis of the throchoid at about 45° with the plugs on
the high
side! Semi plugs up. The exhaust port was near the bottom. So
your way
of thinking has support. I've never thought plugs up was bad,
just
certain people do. You do have to have a better fabrication ability
than conventional installs. the lack of available equipment is the
biggest drawback.
Bill Jepson
-----Original
Message-----
From: Ed Anderson <eanderson@carolina.rr.com>
To:
Rotary motors in aircraft <flyrotary@lancaironline.net>
Sent:
Mon, 25 Jun 2007 10:34 am
Subject: [FlyRotary] Re: Method of killing
power??
Good point, Bill. Mine will slowly leak down through the
pressure
regulator, but not fast enough to preclude potential flooding
with a
leaky injector. But in my case, "Plugs Up", any fuel that enters
the
combustion chamber simply drains out the exhaust port(on the bottom)
and since the plugs are at the highest point, there is less likelihood
of any liquid gas entering into the spark plug cavity and drowning the
plugs. This is the reason why flooding is not a significant event for
the plugs up.
Ed
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