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In article ,
"Charlie Gibbs" wrote: In article , (dcd) writes: On Saturday, March 7, 2009 9:41:21 AM UTC-8, Danny Deger wrote: The POH on my 1941 Taylorcraft doesn't say a thing about when to adjust the prop :-) I didn't think the 1941 Taylorcraft came with a POH? Do you still have it? I once managed to purchase a new POH for my 1961 172B. But it doesn't say anything about when to adjust the prop either. As for planes with constant-speed props, my rule on takeoff is to bring back the power first - although this shouldn't be necessary if the airport is at 5000 feet. :-) I have a controllable Hartzell (no governor), so I have to adjust the RPM so as not to overspeed the prop, leaving full throttle on takeoff. The "throttle before prop" is a holdover from military days, when those airplanes had superchargers, which would allow for overboosting the cylinders, sometimes with disastrous outcomes. Normally-aspirated engines are quite tolerant of reasonable RPM reductions, while maintaining full throttle. Just look at those planes with fixed-pitch cruise props -- the only control you have is the throttle, and they allow full throttle on takeoff. |
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