Pete, I was taught to pull carb heat at cruise rpm (2400) when abeam the numbers, then pull power back to 2000 rpm, then when at a 45 deg. angle to the end of the runway pull power back to 1500 rpm, turn base, then turn final, keeping the power at 1500 rpm until over the fence, then pull power back to idle and glide to the runway for flare and landing. I agree with you, pulling all the way back to 1200 rpm, especially on a cold day could lead to shock cooling.
Syd Cohen Peter Hogan wrote: > I was wondering how far off the mark I am and is there cause for > concern? I have 6516Q an Alon 66. When abeam the #'s and at cruise of > 2000rpm I pull the carb heat and pull the rpm's to 1200 and maintain > 70-75mph all the way till I know I can make the numbers.. without a head > wind(or crosswind)I keep her close to 70mph. Is there any concern about > engine shock cooling? Does the carb heat add any benefit to the > cylinder head temp? And thanks to you all for the encouragement and > responses. I did get this wonderful ticket to learn..and a beautiful > bird to fly..Pete
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