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Old 08-01-2006, 11:54 AM   #1
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Default Clutch Bell Bearings...help

Ok I've had luck with assorted bearings here and there, but a past race this past weekend at RC Pro Michigan series ended with me in second but both bearings are locked solid, thank the racing gods I finished the full race!

Can I get some opinions on good bearings to use? Brands? Sealed, unsealed?
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Old 08-01-2006, 12:42 PM   #2
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Avid bearings. $1 each. Get the Revolutions. Face rubber shield out. Blow out w/ 100 psi air, wipe off grease. Run for 1 gallon. Throw away. Repeat.

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Old 08-01-2006, 12:57 PM   #3
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I second that. Those are the only clutch bearings that I haven't had blow out, I just replace mine after a little over a gallon as stated above using the same technique.
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Old 08-01-2006, 01:14 PM   #4
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If you shim the bell properly (thanks mretmr) you will notice your bearings lasting quite a while.

That being said, even with proper gear mesh and bell shimming, the BOCA bearings last only about 1/2 gallon before they literally explode in your bell.....

The best bearings I have come accross were metal gold seal 5x10's from the old Kyosho Ultima...they were sold in a bubble-pack with a bunch of other bearings....they lasted well over a gallon when i found them in an old pit-box i had stored.
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Old 08-01-2006, 07:29 PM   #5
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Originally Posted by Crim3Wav3
the BOCA bearings last only about 1/2 gallon before they literally explode in your bell.....
Are you referring to the BOCA's ceramic bearing ? It cost hell of alot more than rubber-sealed/metal-shield type.

Got some of those metal-shield type from hardware store previously & was surprised to notice 'Kyosho' printed on the shield. More surprises is they do last much longer.
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Old 08-01-2006, 09:39 PM   #6
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Shimming your clutch bell properly and setting you gear mesh are the two best things you can do to prolong the life of your bearing. When shimming the bell you need to have between .35mm to .45mm of end play. Anything more or less and you are asking for trouble. Its hard to explain how to set gear mesh in writing just make sure it is not too tight and that the engine is as close as possible to being 90* to the spur gear as you can get. Also as stated above with the Avid bearings at a buck a piece you cant go wrong.
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Old 08-02-2006, 07:55 AM   #7
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Amain hobbies has the clutch bell speed bearings for a buck a bearing....
Personally i replace mine every race day even if the bearings still feel smooth....
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Old 08-02-2006, 08:33 AM   #8
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Thor that is a good idea as well but after a while you will learn to know about how much longer you can run the bearing just by look & feel. Having said that if there is any dout going into a main I replace them.
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Old 08-02-2006, 11:04 PM   #9
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the bearings i get are $4 each!......they last for AAAAGGGGGGEEESSS....my 1st rubber sheilded bearings for my savage on the stock clutchbell pretty much got heat treated from the heat of the clutchbell and the rubber shield literely melted the rubber and only had the little ring there lol and the bearing had turned that sick ass looking blue......they still run but i replaced em for a new set of metal sheilded...and havnt replaced em for the past 8 months...still run like new but i dont realy run in dirt asmuch....
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