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2inch post gimbal bearings


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#1 DavidWest

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Posted 22 December 2007 - 07:37 PM

any help appreciated...

i have an efp sled and gimbal<---(which i hesitate to take apart)


a also have a 3a sled but it did not come with a gimbal.

despite all warnings, i want to try and make one for it mostly just to see if i can.


my question is how many pan bearings are being used in the two inch gimbals?


i can see rational for using one in that you could avoid the complex alignment problems
that two bearings present; however, two bearings could much more easily support the extreme
loads that are presented when riding in a vehicle, etc...




is this TOP SECRET, or can someone tell me if one or two pan bearings are more common in the
2inch gimbals?

thanks,
david
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#2 TJ Williams

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Posted 19 January 2008 - 01:52 AM

hey 1 or 6 would be both ok more bearings distribute the load better but have more turning resistance. If your machining isn't accurate enough to align two bearings you should rethink trying to make one as it will never even static balance.
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#3 DavidWest

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Posted 19 January 2008 - 12:34 PM

hey 1 or 6 would be both ok more bearings distribute the load better but have more turning resistance. If your machining isn't accurate enough to align two bearings you should rethink trying to make one as it will never even static balance.


Hi TJ,
thanks for the response. My machining is accurate enough to do six, but machinging aside, most bearings that go into an application in pairs are shipped in pairs from the mfg. I'm not sure why, but probably so that even the slightest mistolerances arent doubled.

If i did use six i am also afraid that the housing for all six would limit my upper and lower limits.
(i do understand the pun of six, but at the same time the logic still applies)

i will probably go ahead and use two since i have bearings that came in pairs. ill let you know how it comes out TJ since you were the only response out of so many views...

cheers
dbw
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#4 chuck colburn

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Posted 19 January 2008 - 03:52 PM

If I was designing my own gimbal I would use a pair of the first two listed bearings for the pan and the third listed one for the tilt bearings as they would be self aligning and make for easier fabrication.

http://www.thk.com/u...roller_r_a.html

http://www.kaydonbea...g311.pdf#page=3

http://www.globalspe..._Bronze/18112/1
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#5 Rob Vuona SOC

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Posted 19 January 2008 - 05:43 PM

any help appreciated...

i have an efp sled and gimbal<---(which i hesitate to take apart)


a also have a 3a sled but it did not come with a gimbal.

despite all warnings, i want to try and make one for it mostly just to see if i can.


my question is how many pan bearings are being used in the two inch gimbals?


i can see rational for using one in that you could avoid the complex alignment problems
that two bearings present; however, two bearings could much more easily support the extreme
loads that are presented when riding in a vehicle, etc...




is this TOP SECRET, or can someone tell me if one or two pan bearings are more common in the
2inch gimbals?

thanks,
david


Yo Dave,
Save yourself the trouble and just buy a new gimbal . . . .Just because of the writers strike, kids, family and general lack of funds has you being frugal with your money , that's no excuse as an American not to go over spend and overextend yourself . . . . .LOL . . . . .

Just bustin your balls bro . . . .hope all is well with you and your fam

Happy New Year!
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