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Bob,
To your question about how to tell if it is rich or lean, I've found
the best way is to have someone watch from the outside. If it is
difficult to start, but when it does there is no puff ...

With a fixed-pitch prop you don't have a lot of choice. The engine power is roughly the rpm times manifold pressure and they can be controlled independently with a constant-speed prop. If 29 inches ...

Jim,
I note that you have a Rocket and therefore the engine will be
operating nose-high on the ground. I'm not sure what effect that
has, but it would put more oil in the gearcase. Also, as I ...

It seems that this is always an interesting topic - or at least a
topic of interest...

I've heard a number of explanations for the apparent increased oil
consumption when full. One that seem ...

I also am not a fuel expert, but offer the following opinions, FWIW:
1. The only reason ethanol has appeared in auto fuel is the
government subsidies. In some states, fuel is exempt from certain ...

Thanks for the replies. The ignition is the Lightspeed Plasma III,
which I'm sure you all know is a capacitive discharge wasted-spark
system. The "III" as far as I know is sort of a ...

Dean,
I'm a little confused about which resistance you are concerned about,
but here is what you can expect to measure: If the switch is
disconnected from the mag, a reading of the resistance ...

Bob's comment brings up a question I have. I've got a parallel-valve
IO-540 with 10:1 compression and electronic ignition on the top
plugs, mag on the bottom, timing set at 22. The cylinders a ...

Bob,
First, it would be good to know which version of the IO-540 you have
since the angle-valve and parallel-valve engines have quite different
intake systems. The angle-valve engines have an ...

Miguel,
Thought about taking it commercial? Sounds possible.
Gary
On Oct 14, 2007, at 11:56 PM, Engines-List Digest Server wrote:

Time: 05:42:14 PM PST US
From: AzevedoFlyer@aol.com
Su ...

I missed the start of this thread so pardon me if my post misses the
mark. Regarding an automatic way to turn on the backup pump, as I
understand it either or both Columbia and Cirrus have this ...

Very interesting. Does it measure pressure or flow? At my day job
we build both for large engines, typically multi-thousand hp mining
truck engines. The flow is still measured by pressure - p ...

I suspect you are right - the market is very, very small. The knock
sensor itself usually is tuned to respond to the knock frequency of a
particular engine and the frequency of a large-bore air ...

On Oct 13, 2007, at 5:27 AM, Gary Casey wrote:

I've heard this before, but consider this: The piston rings run at
no load half the time regardless of manifold pressure (BMEP).
During the ...

I've heard this before, but consider this: The piston rings run at
no load half the time regardless of manifold pressure (BMEP). During
the exhaust and intake strokes the pressure is very low, ...

I'm not a certified engine expert (although I am probably certifiable
in other catagories... Smile

, but in my experience "ring flutter" is
something the engine builder will use to explain ...

I have recently upgraded my 430A to a 430W (WAAS capable) in my
Lancair ES. I received the 430 back along with a new slightly larger
antenna. The antenna cable requires a new connector (thread ...

Left over from my project is a Lycoming "rear entry" sump and intake
tubes. The parts are, I believe, from an Malibu installation. All
are like new with no damage. Any takers?

Ga ...

I have left over from my last project a rear-entry sump for a IO-540
spread-valve engine. I believe it originally came from a Malibu. It
is in new condition and includes all intake tubes and t ...

My instruction manual said 60-65 ft-lb, clean and dry. They put
emphasis on the threads being dry, not lubricated. If the threads
are lubricated the proper torque would be lower, but I don't k ...