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Old 01-07-2013, 08:44 PM   #2 (permalink)
snemi00
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Join Date: Jan 2010
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It has been mentioned elsewhere to check the one-way after a crash.
What is different compared to other helis, is the 2 stage drive system. The one way bearing is on the first stage of the gear train on the Goblin. So only about half the gear reduction is done at this point. This is double the amount of torque the bearing would be subject to seeing in a crash than it would in another machine.

Possible solutions would be an additional oneway bearing in line, or a larger diameter first stage drive shaft and bearing that would be able to handle a higher shock load.
I do not believe it is the quality of the bearing at all, I believe it is the design limit of the bearing at this size.
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