ORIGINAL: albsurfer
I'm a little confused now. I have people who have been in RC for a while (10+ years) telling me to keep a 10-6 prop on my Tucano .40 with a ROYAL .46 installed. I see on most charts that for regular flying, an 11-6 is the average recommended prop. Won't the Tucano fly a little lower in the RPM range with a larger prop, rather than the smaller? I have been under the impression that with a .46 you would keep a smaller prop like a 10-6 or 10-7 to get speed type performance. An 11-6 thru 11-10 would get me a more stable idle on the ground, slower approach speeds, and generally more controllability in .40-.46 size model. Is this correct? Thanks in advance.
Eleven ten??????
I'm going to make a wild guess that the people who know you have a reason to suggest you keep on flying slow, at high RPM, with that 10x6. When you have practiced all the maneuvers, and consistently gotten out of trouble with your present configuration, you might want a bit more speed, and the 11-6 or 7 would do that for you. And yes, a more reliable idle might result. I'm not understanding (or agreeing with) the "slower approach speeds" or "generally more controllability. "
I, for one, am not going to second-guess your experienced colleagues.
Best wishes,
Dave Olson