SteddyTeddy
Pro
Posts: 1664
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posted July 15, 2010 09:57 AM
I have them in my rear wheel and transmission. When it's time to change out the front wheel bearings, ceramics will go there too just because they are that much better than steel bearings.
  
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LAB3
Needs a job
Posts: 2977
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posted July 15, 2010 10:16 AM
quote:
I have them in my rear wheel and transmission. When it's time to change out the front wheel bearings, ceramics will go there too just because they are that much better than steel bearings.
I was wondering how ceramic bearings take "Shock" load??? The ceramic inserts used for metal removal
on a engine lath were very brittle and easly chipped on a interupted cut. And needed a lot of cooliant or
they would burn up.
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Hellmutt
Needs a job
Posts: 2013
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posted July 15, 2010 11:20 AM
For use in motorcycles, they're basically impervious in comparison to machines that generate a ton more torque load -- but this is only hearing about them used by others..........so until personal experience speaks for itself, I'm relying on racing buddies to tell me the truth
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British flying couch with endtables and an orange thumper
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SteddyTeddy
Pro
Posts: 1664
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posted July 15, 2010 02:53 PM
The ceramic balls are suppose to be harder and less brittle than steel balls used in most bearings. They are harder, last longer, spin with less resistance and are about 1/2 the weight of steel bearings.
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TurboBike
Expert Class
Posts: 121
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posted July 15, 2010 04:57 PM
 Edited By: TurboBike on 16 Jul 2010 01:02
The real seasoned racers around the country have not seen any measureable gains in the qtr.
I have to venture to say that lighter wheels have not been proven to see any gains either. The BSTs will probably be the closest as they are on average 13-14lbs. lighter than a lot of factory wheels such as the Busa and ZX12R. Plus the more weight removed from the outer part of the wheel is where most of the gains can be had. Side to side movement and cornering is extremely noticeable for road racing or canyon carving freaks.
I have Carrozzeria wheels on the Busa and when comparing the weight of a set of complete stock wheels to complete Carrozzeria wheels there was a 9lb 8oz. difference. When you add lighter front brake rotors, lighter rear brake rotor and titanium brake rotor bolts, you get another 2 1/2 lbs loss. Coupled with Ceramic bearings, I saw ZERO changes in the qtr whether I was on the bike or my friend was on the bike.
People say that technically 18lbs of weight lost or gained can change the qtr, mile times by a .10 and 1mph. I never see that but if there is a 25lb loss or gain in weight I can pretty much guarantee that .10 and 1mph change.
What does suck these days is that on the newer motorcycles the factory wheels are getting lighter so when upgrading to the aftermarket lighter wheels, your gains are a lot less......
If you go with all ceramic bearings in the wheels and the transmission, I think a gain could be seen. Probably more in the trap speeds as opposed to the ET. My buddie with the ZX12R that is being parted out here on Bikeland and Psychobike had full out ceramics and lightened crank, etc. Those lighter components allowed his ZX12R engine really sing up top. That bike ran fast up here at 5300' altitude with average 7500 DA conditions. 146mph traps with a 220lb suited rider. At any sea level track expect 156-158mph traps with this NA combo and probably 160-162mph with a 150lb rider. Who ever bought his bottom end will get a great engine as long as they do a good head and cams with it.
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RACE WHAT YOU BRUNG AND HOPE YOU BRUNG ENUFF
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bigdtd
Needs a job
Interceptors
Posts: 4209
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posted July 16, 2010 07:04 AM
if you have the extra $$ to spend go for it. stock bearings work fine on the street tho.
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2006 Black ZX-14,6 inches over,16/42, flies out,BMC Street Filter,Brock's Street Meg,Brock's Radial Mount Strap,PClll with Race map,Dynojet LCD w/Techmount, ZX-14 fender eliminator,Pilot Power2CTs,Speedohealer,Pazzo Levers,Cox Radiator Guard, Garmin Nuvi 265WT
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