Tiny drag in grip ! - HeliFreak
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Old 08-10-2017, 07:31 AM   #1 (permalink)
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Default Tiny drag in grip !

I've double checked the order of parts and am sure they are correct however I have a tiny amount of drag or friction showing up when I add load and rotate the main Grips. One is as smooth as butter and the other just not quiet right.
Has anyone got any suggestions as to what could cause this ?
I think I read a Thread which spoke about undersized Thrust Bearings or something like that causing something similar to this. How does one tell if that is the problem ?
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Old 08-10-2017, 08:35 AM   #2 (permalink)
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It is caused by the outer thrust bearing race rubbing against the bladegrip and it is suppose to run free from the grip and load up against the inner race of the outer radial bearing.
I had these problem and have filed down the outer race of the thrust bearing to prevent it, but it is not suppose to be that way.
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Old 08-10-2017, 11:18 AM   #3 (permalink)
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As Mr. Anderson stated, it should be glassy smooth.

Make sure that you pull the tail blade grip out from the hub when testing (as centripetal force would do in flight. Also make sure that the tail collective spider links are not connected when you do this.

If the issue persists...

Following Mr. Anderson's line of thought, I would measure the OD of the thrust bearing race to see if it has an O.D. identical to the one that works properly.

I would also measure the I.D. of the inner thrust bearing.

Also, make sure that the bearing races in the grip that is not as smooth as it should be are in the right order.

Please contact Experience RC if you do find a defective part.
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Old 08-11-2017, 02:18 AM   #4 (permalink)
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Ok , a shinny new set of Thrust Bearings supplied by Compass Australia has the Head sorted.
The ones that came in the kit had some variance in both inner and outer diameter. Replacement set , spot on !
On with the build ......
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Old 08-11-2017, 06:17 PM   #5 (permalink)
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Quote:
Originally Posted by Van Scott View Post
Ok , a shinny new set of Thrust Bearings supplied by Compass Australia has the Head sorted.
The ones that came in the kit had some variance in both inner and outer diameter. Replacement set , spot on !
On with the build ......
Good deal. Thanks for the support, Richard!

Scott
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