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Old 04-18-2018, 11:13 PM   #1 (permalink)
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Default Main shaft play

Hello guys,

I need your advice again. Yesterday i noticed some radial play of the head/main shaft.

The video linked is not mine, but it is looking similar.

I am pretty sure it wasnt there before my crash.

The question is, should i worry about it, or what could be the cause?
Damaged one way bearing or just "normal" play (which i hadnt, when new)?

The bolt which is fixing the head and the other one fixing the main/tail gear at the main shaft are both tight.

p380 main shaft play against the main gear (0 min 13 sec)


Please guide my heli (and me) so it can take a lift off again.
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Old 04-18-2018, 11:54 PM   #2 (permalink)
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I have the same play, mine has not been crashed or had any blade strikes etc.

So I think it is normal.
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Old 04-19-2018, 03:59 AM   #3 (permalink)
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It is normal. Hole in the OWB hub is bigger than the bolt that holds the main shaft. Max is like this too.
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Old 04-19-2018, 05:34 AM   #4 (permalink)
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Quote:
Originally Posted by Michaelinpr View Post
It is normal. Hole in the OWB hub is bigger than the bolt that holds the main shaft. Max is like this too.


Most Heli where the bolt goes completely through the owb do this unless they clamp down somehow. The only heli Iíve had that didnít was thunder tiger as those have 2 bolts that thread into the shaft from each side.


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Old 04-19-2018, 08:05 AM   #5 (permalink)
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Totally normal
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Old 04-19-2018, 08:34 AM   #6 (permalink)
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Uff, thanks a lot.
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