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Post by 4l04ever on Apr 8, 2020 23:31:28 GMT 1
While I had the old bearing out, I decided to have a quick look to see what had failed. It appears to be the plastic cage as that is moving the most. I will have to try to get it apart to see in more detail. Pics to follow.
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Post by 4l04ever on Apr 8, 2020 23:33:45 GMT 1
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Post by 4l04ever on Apr 8, 2020 23:35:26 GMT 1
I had some uprated bearing made for the clutch as I knew this one had failed. Pics of uprated one below. Notice they have metal cage, and more balls! Two rows of 14 balls instead of two rows of 9.
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Post by 4l04ever on Apr 8, 2020 23:36:20 GMT 1
Uprated bearing pic  |
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Post by 4l04ever on Apr 8, 2020 23:39:45 GMT 1
Apparently, plastic cages can fail if they are heat cycled too many times. They also have a lower operating temperature range than metal caged ones.
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Post by dusty350 on Apr 9, 2020 7:42:56 GMT 1
Was the "half moon" shaped bearing retainer plate fitted with that failed bearing Rob ? I wonder if the retainer is left out, like on race Lc's, does it put extra load on the bearing ? All the ones I've changed over were still useable if I'm honest, with no excessive play. Dusty  |
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Post by 4l04ever on Apr 9, 2020 11:58:22 GMT 1
This was in my road/track LC. The half moon bearing retainer plate was fitted. I could feel the play on the shaft once the clutch basket was removed. Maybe worth added to the build thread to check play on the two shafts once bolted in, as this would check the bearings, shafts and casings to make sure everything is good.
The bearing was spinning fine when I took it out, but had excessive play. It is easier to detect the play with the shafts all fitted and casings bolted together.
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Post by jon on Apr 10, 2020 11:56:24 GMT 1
This is partly due to the helical primary and secondary drive gears.
Jon
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Post by 4l04ever on Apr 10, 2020 11:59:13 GMT 1
The stronger metal cages should hopefully help to keep the bearing together for longer :-)
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Post by JonW on Apr 11, 2020 1:51:34 GMT 1
Wow. nasty.
Uprated bearing defo the way forwards with this one, same with the output shaft I always think. This one is tougher to do as it needs the groove, but the sprocket one is just a case of ordering the right unit. The smaller bearings can be upgraded as well, but not needed so much as they have less load etc.
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