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Home✈️Aircraft🚁HelicopterAlignT-REX 600N › Tail jerky
02-22-2010 07:13 AM  10 years ago
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l0n3i200n

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South Africa

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Tail jerky
Hi

I've been struggling with my Trex 600N's tail for a while now. It seems that the tail holds "OK",but have almost a hesitant wag. No matter how I set the gain.

Now the kit is almost a year old and has not done any hard flying. Due to the tail, now I've read a few post regarding the twitching tail.

Most post seem to think it's the tail thrust bearings. How would I know if it's the tail trust bearings? Any particular motion, sound I should look for?

Also the gyro is a CSM SL 630 with the Hitec HSC 6965HB, is the comibination a bad one, I have the CSM jumper set as well.
Should I rather remove the jumper? Try a diffrent gyro and servo.

Could it be static? Please help, I would really like to fly this heli, never had this much tail problems with my rappies.

thanks
l0n3i200n
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02-22-2010 07:15 AM  10 years ago
nivlek

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Norfolk England

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It could just be that the engine is not running smoothly , maybe a little rich .At the end of the day , it gets dark .
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02-22-2010 09:09 AM  10 years ago
l0n3i200n

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South Africa

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It could just be that the engine is not running smoothly , maybe a little rich .
Don't think it's the motor. It's governed and runs real smooth, also I'm quite familiar with heli motors and the align motor is running very smooth. Although I have to admit it is running very rich and is cool to touch after a tank. Could richen the mixture a bit, it won't hurt.
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02-22-2010 12:53 PM  10 years ago
Simmer

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Massachusetts

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its your torque tube. Pull it and make sure its not warped.
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02-22-2010 01:01 PM  10 years ago
l0n3i200n

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South Africa

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its your torque tube. Pull it and make sure its not warped.
That sounds like a wise option if I had a shaft drive, problem is that it's a belt drive. Sorry, should probably have mentioned it.
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02-22-2010 02:29 PM  10 years ago
Simmer

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Massachusetts

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np. then my guess is... play or tightness on the balls or servo arm. Any slop or bind will effect your gyro. I mention the servo arm as yours isnt the most common choice. The tail servo is pehaps more critical on this heli because of the 2 control rods for the tail. I guess the question to ask is... is this new behavior? Did it ever fly right?
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02-23-2010 05:24 AM  10 years ago
l0n3i200n

rrApprentice

South Africa

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I guess the question to ask is... is this new behavior? Did it ever fly right?
Good question,I was previously on my Rappy with the combination and it held very good. Problem was that the rappy was not 2.4Ghz and was still 35mHz and thus 4.8V, since the Trex is 6V the servo speed increased and now behaves funny? Maybe a Stepdown?? Who knows??
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03-02-2010 11:25 PM  10 years ago
Simmer

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Massachusetts

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Maybe try moving the connection on the servo arm our one hole, resetting the travel again. More resolution I think might help this issue
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