Switching to Bocca grip bearings - HeliFreak
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mCP X Blade Micro CPx Helicopters Information and Help


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Old 04-24-2011, 03:58 PM   #1 (permalink)
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Default Switching to Bocca grip bearings

Hi all,

While troubleshooting a shake and wobble problem I found two B version grip bearings that were notchy after only about 30-40 flights.

The root cause of my wobble problems turned out to be a split in my mainshaft that was almost impossible to see with the head attached.

I did a bunch of research and finally found the 10 pack of Boca bearings. The part number is:

#RCTPX-MR681-XZ/W1.12 and the shipped cost was $19.99 so there was a price increase but not bad at ~ $2 each.

Good Luck, Don
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Old 04-24-2011, 05:23 PM   #2 (permalink)
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I use the same pack (10) without any problem with "B" grip
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Old 04-24-2011, 09:10 PM   #3 (permalink)
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Quote:
Originally Posted by dbennettya View Post
Hi all,

While troubleshooting a shake and wobble problem I found two B version grip bearings that were notchy after only about 30-40 flights.

The root cause of my wobble problems turned out to be a split in my mainshaft that was almost impossible to see with the head attached.

I did a bunch of research and finally found the 10 pack of Boca bearings. The part number is:

#RCTPX-MR681-XZ/W1.12 and the shipped cost was $19.99 so there was a price increase but not bad at ~ $2 each.

Good Luck, Don
I have a set of ten, they are 1.12 not 2.0 thickness, is that ok? I think they are supposed to be like 4.0x1.5x2.0 ?? noticed that and have not used them, have t-rex in now myself.
And I'm not saying that yours are 1.12 but would like ta know. I ordered from the same link a bunch of us did!!
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Old 04-24-2011, 09:11 PM   #4 (permalink)
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Quote:
Originally Posted by bradharvy View Post
I have a set of ten, they are 1.12 not 2.0 thickness, is that ok? I think they are supposed to be like 4.0x1.5x2.0 ?? noticed that and have not used them, have t-rex in now myself.
And I'm not saying that yours are 1.12 but would like ta know. I ordered from the same link a bunch of us did!!
Sorry my bad, same part #...
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Old 04-24-2011, 09:12 PM   #5 (permalink)
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No, the correct size is 1.5x4.0x1.12mm for the A & B stock grips. The Walkeras measure 1.133m and the Aligns measure 1.2mm both of which are the wrong size.

Don
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