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Home✈️Aircraft🚁HelicopterBeginners Corner › Unstable tail rotor
08-05-2012 11:45 PM  9 years ago
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Lexx

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Ontario, Canada

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Unstable tail rotor
Well I had my first crash (Blade 450X) the other day. Broke the main shaft, striped a servo and cracked a mainblade. Fixed everything rebuilt/centered the servo and adjusted the collective pitch, took it up for its first flight today and noticed that everything seemed good except the tail. It would drift slightly from side to side and not be as steady as before, Brought it down and looked it over I did notice that the tail rotor belt was very loose, tightened it and went back up. Seemed to do better but brought it down rather quickly as the wind was a little strong. Was wondering if a loose belt could cause the tail to drift and if anyone had any feedback on things I should check. Any help would be appreciated, TIA.
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08-05-2012 11:53 PM  9 years ago
l4rg0

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Northfield, KY - USA

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If the belt is loose enough to slip, you would definitely lose some or all tail authority. But, from that behavior, I would look for vibrations ( bent tail grip or tail shaft) too.Team A Main Hobbies/ProTek R/C
Spartan Avionics Field Rep
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08-06-2012 12:19 AM  9 years ago
Lexx

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Ontario, Canada

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Thanks for the tips, curious though would a bend cause side to side movement or just a one sided drift? Still pretty new to this so trying to learn as much as possible.
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08-06-2012 12:26 AM  9 years ago
l4rg0

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Northfield, KY - USA

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depends on the severity of the bend. if just the shaft is bent, it would just cause a tail vibe, which could throw off the gyro. If the hub or grips are bent, it would be visible as bad tracking on the tail blades, and possible jerking. Also if you reused the feathering spindle, roll it on a flat bit of glass to see if it is bent. They can be straightened, but it takes a deft touch with a hammer to do itTeam A Main Hobbies/ProTek R/C
Spartan Avionics Field Rep
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08-06-2012 03:17 AM  9 years ago
Lexx

rrNovice

Ontario, Canada

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Thanks for the tips and I did change the feathering shaft as well, forgot to mention it.
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Home✈️Aircraft🚁HelicopterBeginners Corner › Unstable tail rotor
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