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At 03:11 PM 2/27/2004, Hartmut Beil wrote: >Well I don't know. It might be that I still have problems with my recently >overhauled engine. But a run-up at altitude (4000ft) lately showed 50rpm >less then close to sea level. Was that with the mixture leaned? You will lose RPM on the ground or in the air as (density) altitude increases if the mixture is set correctly for sea level. I believe engine operator's manuals tell you this, and mountain flying courses also teach you to lean to appropriate levels before taking off from a high airstrip. Greg ========================================================================== ==== To leave this forum go to: http://ercoupers.com/lists.htm Search the archives on http://escribe.com/aviation/coupers/
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