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Sorry for my absence on a topic I started. My
nephew had a skateboarding accident last weekend and is in the hospital in a
chemically induced coma until his brain swelling is under control. And I thought
car powered airplanes were dangerous. Stay away from skateboards.
Tracy - My mixture monitor shows stoich at full
throttle. I suspect an airflow issue rather than fuel.
Al - my vacuum gauge is located in the plenum
directly behind the throttle plates.
Lynn - I agree that the TB inlet is horrible and
needs a bell mouth. The inlet is also pretty obstructed by the cowl which isnt
visible in the pics I sent. I think I'll make an attempt to clean this up some
and see if it gets me anywhere. If not I'll live with it for a
while.
Kelly - always tough to determine if the problem is
an engine issue or if the load is simply too much for the engine to overcome.
I'm going to experiment with the shallow dive several have suggested and see
what happens.
Mike
----- Original Message -----
Sent: Tuesday, October 13, 2009 4:21
PM
Subject: [FlyRotary] Re: where's the
missing power?
From:
Rotary motors in aircraft
[mailto:flyrotary@lancaironline.net] On
Behalf Of Al Gietzen
Sent: Tuesday, October 13, 2009 7:22
PM
To: Rotary motors in aircraft
Subject: [FlyRotary] Re: where's the
missing power?
I dont have a regular manifold
pressure gauge, just an industrial type vacuum gauge ( I really gotta get an
MP gauge). Anyway, the vacuum gauge was indicating 4" of
vacuum.
Where are you
measuring the 4” vacuum? If it is near the ports it is no unusual; if it
is out before the runners; something is wrong.
Al
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