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Old 26th December 2002 | 08:10
  #9 (permalink)  
dirkdj
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Joined: Jul 2001
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From: Belgium
Mooney M20J

There is one recommendation I would like to object to:

After liftoff, it is better to leave the throttle wide open instead of reducing to 25/2500 (done in order to 'save' the engine).

For noise abatement purposes, the prop can be brought back to 2500 RPM but leave the throttle wide open to top of climb. There is a fuel enrichment valve on most engines that will provide extra rich mixture for cooling purposes when throttle is wide open.

Having a JPI six-cylinder engine analyser (on a 231) it is easy to see that temperatures (CHT and EGT) go UP when reducing throttle during climb.

Please read the excellent columns by John Deakin on http://www.avweb.com/articles/pelperch/perchlinks.html for in-depth explanations and old-wives-tales killing.
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