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Old 05-06-2007, 01:00 PM   #1
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Default Benefit of ceramic ball bearings and diff balls

What is the benifit is ceramic ball bearings and diff balls? I know that they are harder. Does that mean they are more brittle and would break? I plan on buying a set of new bearings soon for my CRC 3.2R, and would like to now if I should pay the extra $20 for ceramic. Thanks ahead of time.
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Old 05-06-2007, 09:39 PM   #2
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in 1/12 i use ceramic bearings and diff balls
they are just smoother and last longer.
my diff balls are 2 years old.
sand your rings nice and use the slapmaster trust bearing and youll have a great diff.
check this out http://www.markpayneblog.blogspot.com/
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Old 05-07-2007, 04:38 AM   #3
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I've been using ceramic diff balls and bearings for a couple of years now, they are awsome and they last for years
i've only just got a new set with my 12x but my old ones are just as good, just spend the money as it is definitely worth the money aslong as you get the slapmaster thurst bearing for the diff.
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Old 05-07-2007, 05:38 AM   #4
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Dont u find in 12th scale that the rear bearings get beaten up from the odd wall slap? There is no give in the rear axel.
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Old 05-07-2007, 07:29 AM   #5
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got a question, if i get parking lot crap into my diff.. .and i am using carbide balls... but my diff plates have obviously taken a beating.... what are the chances my carbide balls will be "ok" when i get new plates?
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Old 05-07-2007, 10:19 AM   #6
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Quote:
Originally Posted by RCSteve93
What is the benifit is ceramic ball bearings and diff balls? I know that they are harder. Does that mean they are more brittle and would break? I plan on buying a set of new bearings soon for my CRC 3.2R, and would like to now if I should pay the extra $20 for ceramic. Thanks ahead of time.
In addition to the other comments concerning durability, they are also lighter. You will also notice a smoother diff action. I have never used anything else in my diffs once I switched to ceramic diff balls. Very smooth.
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Old 05-07-2007, 10:39 AM   #7
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ceramic bearings & diff balls have many level !
don't order white color ceramic diff balls , too soft !
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Old 05-07-2007, 12:17 PM   #8
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Quote:
Originally Posted by Joel Lagace
Dont u find in 12th scale that the rear bearings get beaten up from the odd wall slap? There is no give in the rear axel.
that's the problem with using regular radial bearings to set diff. This is what the thrust bearing is designed to handle. When you set your diff with most electric cars you are adjusting the thrust bearing.. now its been retrofitted for pan cars.
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Old 05-07-2007, 11:17 PM   #9
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Hi all,

I was curious to know if the quality of metal ring retainers makes a differance when it comes to cer. bearings, or is plastic/teflon rings better?

Heard that the cer. balls can wear out metal?

Thanks
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Old 05-07-2007, 11:59 PM   #10
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a bit off topic question (bec its nitro related ) ...

do you guys know if ceramic bearings for the clutch bell are worth the investment? as a precaution, i replace the 2 rubber sealed clutch bell bearings after every gallon of fuel. if i switch to ceramics, will they last much much longer without replacement or maintenance?

maybe some of you guys who also run nitro can post some info, thanks in advance
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Old 05-08-2007, 02:07 AM   #11
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Most all the oval guys use steel bearings in the diff,at $1 a piece they can and should be replaced often,the best ceramic diff balls and rings are from IRS.Look on their site to see how to properly build a diff,the only place you should have any lube is a tiny bit on the balls themselves.These diffs are friction diffs, the rings shouldn't be polished smooth and shiny like some folks insist on doing,use some 6-700 grit paper and sand the rings with this.You're trying to make the ring level not really smooth and shiny per say.Rings should last a long long time as they get better every time you rebuild your diff and resand them,I actualy never change the rings or the diff balls cause they never really wear out,it's the diff bearings that wear out and need replacing often.
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Old 05-08-2007, 08:25 AM   #12
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On the diff rings this is what I do to get an extremly smooth and long lasting diff..
1. clean both sides of diff rings
2. 800 git sandpaper in a circular motion on both sides of rings
3. clean diff
4. 1500-2000 grit autobody sandpaper, a touch of oil on sandpaper in circular motion, both sides
5. clean diff with spray and wipe with clean cloth
6. polish ring with dremel polish attachments also a mirrow finish
7. repeat step 5 and you are ready...
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Old 05-08-2007, 08:56 AM   #13
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Ive seen ceramic diff balls cause problems in Mod oval cars before. The problem is they are so round and smooth that you have to tighten the diff up extremely tight and then you loose some of the diff action and it cause the car to do funny stuff in the middle of a corner. I suspect it could cause the same sorts of problems in TC's as well.

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Old 05-08-2007, 08:57 AM   #14
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Nova, skip steps 4 & 6 and you'll be in good shape,as mentioned you don't want a mirror finish on your rings,these are friction diffs thus they need a non polished surface to work properly.

EA,what type of diff balls would you recommend?
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Old 05-08-2007, 09:25 AM   #15
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Hyper,

I run Ceramic unless its Mod. I probably would NOT run ceramic in BL classes either as the BL motors have so much torque they really spin the diff's and have to be very very tight. I know some guys had problems at the Carpet Oval Nats at Greenville and as soon as they put steel balls back in their problems went away.

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