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#1
January 25th 09, 10:41 AM
posted to rec.aviation.piloting
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Why does one need to LEAN OUT a CARB when climbing?
On Wed, 21 Jan 2009 19:25:39 -0500, Tman
wrote: wrote: In the carb, one-half the density should then cut the pressure differential and therefore fuel flow by one quarter, which will give us a mixture twice a rich as when we took off. At the risk of dragging on the subject  ... Wouldn't that actually lean it out, requiring one to compensate by richening the mixture at higher altitudes? One-half the density i.e. one half the mass airflow at constant velocity, fuel flow by quarter... sounds like that mixture is leaner! totally correct. you richen the air in the mixture by reducing the fuel. 
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