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| 808 Differential Bearings https://setup.teamxray.com/xsetup/legacy/viewtopic.php?f=9&t=8807 |
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| Author: | Ry @ JE Spares [ Thu Feb 12, 2009 13:26:03 ] |
| Post subject: | 808 Differential Bearings |
Hi all, The time has come to replace both the bearings and the composite bearing hubs that cover the 8x14x4 bearings. I know that an 8x16x5 bearing can be used in place of the smaller bearing and hub, is the smaller bearing and hub in there to reduce wear on the bulkhead/gearbox itself? Anyway what I'm wondering is if anyone using 8x16x5 bearings instead has experienced wear on the gearbox? I might be right or wrong but surely a bigger bearing has a longer lifespan? Thoughts & comments please! |
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| Author: | auto2 [ Thu Feb 12, 2009 14:21:02 ] |
| Post subject: | |
the smaller bearing lets the drivetrain rotate better. less resistance.so its a trade off .faster acceleration/longer lifespan i would think if any bearing is not spinning in the hub the size would not matter. |
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| Author: | Rocco Margiotta [ Thu Feb 12, 2009 17:05:45 ] |
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They also weight a lot more. I use 8x14's with the bearing covers everywhere in my truck too. |
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| Author: | jhautz [ Thu Feb 12, 2009 17:40:09 ] |
| Post subject: | |
I switched to the 8x16x5 bearing on all 3 diffs in my 808. I definitly do see a much longer life from the larger bearings and in all honesty cant tell a difference at all in acceleration. They probably do add a few grams of weight, but the decreased maintenance and increased reliability are worth it IMO. I actually wish I could use the larger bearings in the wheel hubs too. (without buying the expensive aluminum upgrade parts that is) I definitly understand where Xray was going with trying to keep all of the weights down and get the best acceleration they can, but for me, being a weekend warrior club racer, anything I can do to reduce the amount of time I need to spend working on it and increase the time I have racing it is important to me. And like I said, any performance difference there might be is totally invisible to me but the bearing life increase is very noticeable for me. |
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| Author: | Ry @ JE Spares [ Thu Feb 12, 2009 17:54:11 ] |
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| Author: | lauri [ Thu Feb 12, 2009 20:17:32 ] |
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| Author: | Rocco Margiotta [ Thu Feb 12, 2009 20:56:24 ] |
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| Author: | xlgraphicspro [ Thu Feb 12, 2009 21:00:51 ] |
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| Author: | Rocco Margiotta [ Thu Feb 12, 2009 23:46:31 ] |
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| Author: | Butcher [ Fri Feb 13, 2009 07:35:26 ] |
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I've been using the old school 8X16 in my 808 from new(8-9 gal range) & had no bearing wearing bulkhead issues. I simply had a lot of that size left over from my last car & had really really bad experience with small bearings when I ran losi. I have a buddy that runs all X-RAY brand correct size bearings & he had no problems either.I believe I have replaced the 8X16 bearings once & my buddy that runs stock size replaced them twice. If you buy Avid $1 bearings I don't think it would make a difference which size you run. Except for my diff o-ring problem you don't need to touch the diffs in this car if you run the same track mostly & like what you got,& there is the benefit in the 8X16 size. You can pack a lot of grease in those big mothers & it takes like 2+ gallons for them to run dry & when you have good o-rings these diffs will still be full & mostly clear by then & that = your total car maint cut in 1/2 just like jhautz said. What I would like to see is 8X16 on the outer wheel bearings those I replace often,well often when compared to anything else on the X-RAY so maybe the same amount as you would on other cars running the new school tiny bearings. I know I shouldn't complain bout them ,they just seem out of character for the this car maint wise but ,like I said above $1 bearings make life better. |
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| Author: | vti-chris [ Fri Feb 13, 2009 09:37:01 ] |
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I never had to change the diff bearings...everytime i clean the diffs the bearing seem OK. I test them by spinning the plastic cover and making sure it spins the bearing inside too. After 6 months all look good. Except of the small bearings on the wheels...all other are still stock. |
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