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1. 08:34 AM - Re: Continental (Monty Barrett Sr)
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>From an Experimental Certificated airplane point of view there is not
much difference between a C-145 and an 0-300.
The 0-200 engines used at Reno do not have a very long life expectancy.
Usually these engines have parts that have been trimmed down to the
minimum weight, are very closely balanced, have minimum volume
combustion chambers, have 1 mag advanced a considerable amount, the
other timed at normal for starting purposes, valve springs are shimmed
to coil bind minus a small amount, use different carburetor jetting,
there is a myriad of changes that are not obvious and some likely do not
comply with Reno Formula one rules. Oil temperature is always a problem
with Reno F-1 engines, at least on the ones I 've built. Because of the
low cooling drag cowlings used on the real fast airplanes, CHT can also
be problematic.
The reason they turn them so fast is because if they don't they do not
have enough RPM static to get the airplane in the air. Remember that
F-1 starts from a standing start so takeoff performance is a major
factor in the final results. He who leads gets to fly in " clean " air.
Monty Barrett
Do not archive
-----Original Message-----
From: owner-engines-list-server@matronics.com
[mailto:owner-engines-list-server@matronics.com] On Behalf Of Bob &
Toodie Marshall
Sent: Saturday, February 24, 2007 9:40 AM
Subject: Engines-List: Continental
Hello, thanks for the info Monty, but you didn't say much about
Continental, what is the difference between the C 145 and the O300 if
any, How do the Reno race boys turn the O 200, 4500 rpm without flinging
chunks of metal all over the tarmac? Have you ever hung a supercharger
on a 0200? I know a crazy question,But most of us on the list are in our
own world of day to day living and building a single airplane and never
see the world of custom engine builders or hear about their sometimes
specialized work, You are very kind to contribute to our basic
Knowledge, thanks, Bob
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