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No flat spot on motor shaft ??

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No flat spot on motor shaft ??

Old 09-14-2010, 05:13 PM
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Default No flat spot on motor shaft ??

Hi,
I would like to put the pinion on my T-rex 450 motor shaft, but do I need to file a flat spot on the motor shaft to grab the set screw ?

Thanks for any help !

Terry
Old 09-15-2010, 04:40 AM
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Default RE: No flat spot on motor shaft ??

best that you do.. as to make sure the pinion will not slip... I had a motor before that did not have the flat spot.. after sometime of flight i had to do an autorotation as heli lost power.. all because the motor pinion slipped
Old 09-15-2010, 08:57 AM
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Default RE: No flat spot on motor shaft ??

You can, you can also put a little green locktite between the pinion and shaft. I prefer to grind a flat spot.
Old 09-15-2010, 07:18 PM
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Default RE: No flat spot on motor shaft ??

Thanks guys,
You have been a big help !!

Terry

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