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My own guess is that there are more engine "failures" resulting from pilots inadvertently pulling back their mixture control , when they meant to pull the carb heat on, than from carb ice. NTSB fuel starvation reports I have read seem to back that up. Of course, I live and fly in Florida. I always "exercise" the carb heat prior to entering the landing pattern, but I rarely land or take off with the carb heat on. Also, I always shut my C-90 engine/MARVELcarb down by retarding the MIXTURE , with IDLE rpm at 525 or so. I suggest you read Ed Burkhead's personal website for answers to your prop rpm questions.
DON
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To: [email protected]
Subject: [COUPERS-TECH] Engine quitting and other less troublesome queries
Date: Tue, 23 May 2006 20:32:27 -0700
----[Please read http://ercoupers.com/disclaimer.htm before following any advice in this forum.]----Hi 'CoupersI have been saving up questions...
- Any thoughts as to this rash of engine quitting? Are people not pulling carb heat soon enough?I have read NTSBs on 'coupe engine failures - quite a few remain mysteries.
- My 'Coupe has a Marvel Shriebler (sp?) carburetor. I don't hear much in the column regarding this unit. Are they a good carb? I know that you can not use your mixture control to shut down the engine.
- I have a McCauley 71/52 (cruise prop right?) I don't think I can pull much past 2400 rpm. Is this prop sized right or is the motor getting a little long in tooth...What rpm should I max out at during level flight (C-85)
Thanks,Scott============================================================================== To leave this forum go to: http://ercoupers.com/lists.htm
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