JR: I agree about warm moist air having more carb ice potential. I've heard of several carb ice problems when OAT was around 90 degrees, the most recent of which was at the Ercoupe Nationals in Jacksonville, IL. The plane went into a corn field. The concept is, at low rpm temperatures in the carburetor can drop 60 degrees. If you start at 90 degrees, you get 30 degrees. My instructor taught me to pull carb heat whenever I throttled back to 2000 rpm or below, and to leave it on throughout the landing sequence. I pull back to 2000 when I am in downwind opposite the approach end of the runway, maintain pattern altitude, pull back to 1500 and turn base, indicated airspeed about 75 mph, keep it at 1500 and 75 mph until I'm over the fence, then glide in to land. Never a problem. When applying power again, such as in a touch and go, I push in throttle and carb heat at the same time.
Syd Cohen NC94196 Wausau, WI JR wrote: > Such a basic subject . > > It is my experience that icing was more probable > with warm moist air in temperate conditions than > in cold dry air in cold conditions. > > Cold temps do not mean ice . > > Any comment ?
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