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HelicopterJR Heli Vibe 90/50, Sylphide 90, GSR260 › Vigor CS Autorotation One Way Bearing
12-11-2004 01:39 AM  13 years agoPost 1
Dr_Crash

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Keller, TX

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Does anyone know the size/type of bearing that is in the autorotation assembly. I have an autorotation assembly on order, however, it was shipped to the wrong address. So unless I can find a way to replace this bearing myself, I won't be flying this weekend. I figured I might try and replace the bearing myself. I will visit some local bearing houses on Sat. Any ideas?

Surely someone has replaced this bearing.

Thanks,
Chris

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12-11-2004 04:05 AM  13 years agoPost 2
RobGiles(JR)

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Ocala, Florida USA

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Bearing

If your going to the bearing shop, just take the block with you and the old bearing if you have it. They'll be able to match it up. Not really sure the exact size but they will know. Pick up a couple just to have spares for in the future. Regards,

Rob Giles

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12-11-2004 07:50 AM  13 years agoPost 3
atvracer

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Transplanted to Oklahoma

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if you take the brass endcaps off you'll see the #.


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12-11-2004 03:18 PM  13 years agoPost 4
Dr_Crash

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Keller, TX

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Got the bearings out. They are NTN HF 1012

It takes 2 of them.

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12-11-2004 04:23 PM  13 years agoPost 5
wolfdad

rrKey Veteran

Southern Maryland

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Doc Crash,
This almost seems like an epidemic on the Torrington bearings as of late. I had to replace two of them in my Voyagers, all within the past two or three weeks and, had I not been in the company of a more experienced individual, I might have still been trouble-shooting this problem.

I had crashed one of my Voyagers about three weeks ago. On the first flight attempt after the rebuild, the engine RPM would respond, however the main rotor and tail rotor would only turn very slowly. Since I had not been able to secure the engine after the crash until I could pull off a fuel line, I figured that the clutch was history. After tear-down, both the clutch and clutch lining were both fine and ther was no evidence of cracking in either the clutch bell or clutch itself.

A flying buddy came down to fly and visit the following Friday and I was telling him about the problem and he immediately told me that it was the one-way or Torrington bearing in the auto-rotation clutch...somthing I had not seen or experienced before. On close examination, we found two hairline cracks in the outer case of the bearing.

Something to file away for the future.

wolfdad sends....

"There are those who have...and, those who will" IRCHA #2117, AMA #70068, Turbine Waiver #105

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12-12-2004 12:47 AM  13 years agoPost 6
Dr_Crash

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Keller, TX

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yea well, don't use to much heat when trying to expand the hub to insert new bearings it will toast a new set of one-ways. I learned a very hard lesson today.

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HelicopterJR Heli Vibe 90/50, Sylphide 90, GSR260 › Vigor CS Autorotation One Way Bearing
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