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Old 10-29-2009 | 05:36 PM
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Mustang Fever
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From: Cadillac, MI
Default RE: Top Flite B-25 ARF

I set mine up for high rate travels only, and rely on expo to keep it from being too twitchy. Seems to work- the maiden today was flawless. No excessive pitch up on landing, just a nice, nose up scale touchdown. Take off was a non issue, too. I used full flaps as the grass was a bit long. As I was turning around at the very end of the runway I started bringing the throttle up and by the time it was headed into the wind it was at full power. When it was about opposite me, I pulled a little bit of back stick and held it. She rotated real pretty and climbed out at a nice angle.

Like has been said elsewhere, tho, it's important to keep the speed up. I only go back to idle on final approach while she's in a nose low glide to the end of the runway. When she's near the end, I level off and bring the power back up some to get her settled down at about 3-4 feet altitude. Then I start gradually reducing to idle and pulling back stick to get the nose up.

Never ran my two 55AXs together until today. Adjusted each separately for a good max rpm "pinch" test. Under those conditions, they both tached between 96 and 9800 RPM with the 12x7s. Idle speeds were considerably different, but at all other points on the throttle curve they were together, as I could just discern a slight harmonic. They did both have a very nice transition from idle to wide open, though, which is characteristic of the 55AX. What the hey, I don't fly at idle, so away I went.

I ended up with the following elevator trims (bear in mind the 4and 5/8 CG and fixed landing gear):

Flaps up: 1/4" down, measured at the widest point
Flaps down: 3/8" down, same technique.

This resulted in hands off level flight. With flaps down, she pitches down just a touch, and that's fine with me as I prefer not to have to hold down stick to maintain a glide.

This is a superbly designed and very easy to fly airplane. Top Flite and the entire design team are to be commended.