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Elec-Helicopters New or Limited Activity
Zoom › Tail boom bearing for drive shaft
03-30-2005 05:04 PM  13 years agoPost 1
zoomcorvette

rrApprentice

Racine, Wisconsin

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Has anyone tried gluing these in? I removed an aluminum drive shaft I was running for a while with the micro-heli boom bearings and noticed wear marks where the shaft was spinning in the bearings,creating lots of interference. The only place there was not a mark was at the Pinned center bearing in the CF boom. I have the new Micro-heli carbon tail drive shaft with bearings and am going to use only two of the supplied 4 bearings and am contemplating gluing the bearings to the boom and the shaft to the bearings. What do you think? Thanks for the help.

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03-30-2005 05:28 PM  13 years agoPost 2
playfair

rrKey Veteran

Rochester, NY

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I'd keep the 4 bearings in the boom.

With my stock CF drive shaft, I "painted" some thin CA along its length and lightly sanded until I got a snug fit in the inner races.


The sky is our canvas

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03-30-2005 05:41 PM  13 years agoPost 3
zoomcorvette

rrApprentice

Racine, Wisconsin

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There will be three the pinned center bearing and one on either end. If I use all 4 there will be five. I like the idea of painting CA to increase the diameter of the shaft. Thanks

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03-30-2005 11:16 PM  13 years agoPost 4
c/f

rrApprentice

Evansville, IN, USA

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IMHO securing the bearings inside diameter to the driveshaft is a must carbon or aluminum. 4 bearings is also a good thing, one on each end, one 4" from one end the other 5" from other end. DO NOT EVENLY SPACE..

The outside diameter of bearings can be friction fit to boom and need not be secured as the large contact area of the bearing on the OD is not likely to spin.

If you secure both ID and OD it will be a pain to service, I remove all dimples in boom so it is servicable.

I run an aluminum boom as it is stiffer than carbon and allows for higher gyry gains IMHO. and I'm anal about weight, just a 6 gram penalty I must live with Man I love C/F,,,,get it.......

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Zoom › Tail boom bearing for drive shaft
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