RC Radios, Transmitters, Receivers, Servos, gyros Discussion all about rc radios, transmitters, receivers, servos, etc.

What's happening????

Old 12-21-2005, 08:41 PM
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Default What's happening????

Took my foamy out today for its first flight with new Hacker brushless motor. Range checked OK, motor ran fine but.............I hand launched it level, it flew level about 100', pitched down, I caught it, it pitched up, I caught it, it rolled inverted...etc. It did more tricks in 1 minute than I know how to do! I was never able to get it stabilized so that I could evaluate trim etc. Fought it all the way just to get it back over field with about 15 mph wind. I went to full off on throttle and it seemed better but it would still pitch down suddenly.

I've flown this A/C before with a different motor and it flew fine, except it started this nonsense with that motor also. I use the same xmitter on 4 other models without problems. My guess is its either the receiver is bad or the components, ESC, RCV, Servos are too close together.

Looking for ideas! I struggled through 4 flights today. Why I ever to it up after the first flight but I did. HELP!
Old 12-21-2005, 09:32 PM
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Default RE: What's happening????

A couple of suggestions:

1. If the receiver has been thru a crash, have it checked or at least change the crystal.
2. Check the balance of the plane. It may sound wrong but tucking the nose at lower throttle positions may indicate tail heavy since going full throttle helped.

I would lean to number 1, unless no crash is involved.

good luck,


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