Today's Message Index:
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1. 09:08 AM - Re: EGT/CHT's (Craymondw@aol.com)
2. 02:10 PM - Re: EGT/CHT's (david michaud)
Message 1
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Hi,
For the first 100 hours or so of running the engine, I borrowed a portable
engine probe to monitor the cylinders and found them all to be close. After
doing that, I installed only single probes on the hottest cylinder.
Since the incident I have put another fifteen hours on the engine. At
cruise the engine appears to be running smooth. But I find I have to make slight
adjustments to the mixture and prop control. The idle appears to be rougher
than usual, especially when I get it down around 1,100 RPM.
I read an article about induction leaks. The article said that at 650/750
RPM an engine should only be pulling 10 inches of manifold pressure. Mine pulls
15 inches at 850 RPM and the engine wants to quit. When I manage to get it to
650 RPM the manifold pressure shoots up to 18/20 inches and just about quits.
I am sure the low rpm mixture is set right.
My return trip back from Washington was a white knuckle trip. To avoid
building thunderstorms, I had to fly the whole return trip on top an over
cast over the Blue Ridge Mountains all the way back to Atlanta. Just as I reached
the Harris VOR Fight control advised that I land at the nearest airport
because of thunderstorms and blinding heavy rain. "Blinding rain" rain was a first
for me. Several aircraft were just circling out side the system and watching
it on their storm scopes. I had to land because I only had a few gallons left
in my main tank and my header had only 5 1/2 gallons.
Chuck Raymond
Message 2
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--> Glasair-List message posted by: david michaud <d.michaud@web.de>
I have a Glasair III with composite prop at idle it has problems to run
smoothly,do you have a composite prop also .
Dave
Craymondw@aol.com schrieb:
> Hi,
> For the first 100 hours or so of running the engine, I borrowed a
> portable engine probe to monitor the cylinders and found them all to
> be close. After doing that, I installed only single probes on the
> hottest cylinder.
> Since the incident I have put another fifteen hours on the engine.
> At cruise the engine appears to be running smooth. But I find I have
> to make slight adjustments to the mixture and prop control. The idle
> appears to be rougher than usual, especially when I get it down around
> 1,100 RPM.
> I read an article about induction leaks. The article said that at
> 650/750 RPM an engine should only be pulling 10 inches of manifold
> pressure. Mine pulls 15 inches at 850 RPM and the engine wants to
> quit. When I manage to get it to 650 RPM the manifold pressure shoots
> up to 18/20 inches and just about quits. I am sure the low rpm mixture
> is set right.
> My return trip back from Washington was a white knuckle trip. To
> avoid building thunderstorms, I had to fly the whole return trip on
> top an over cast over the Blue Ridge Mountains all the way back to
> Atlanta. Just as I reached the Harris VOR Fight control advised that
> I land at the nearest airport because of thunderstorms and blinding
> heavy rain. "Blinding rain" rain was a first for me. Several aircraft
> were just circling out side the system and watching it on their storm
> scopes. I had to land because I only had a few gallons left in my main
> tank and my header had only 5 1/2 gallons.
>
> Chuck Raymond
>
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