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Help! Rear Sprocket Wobble / Alignment

  • Andy_911
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Help! Rear Sprocket Wobble / Alignment was created by Andy_911

Is this amount of wobble on the rear sprocket bad? It doesn’t look good to me. Is there a fix?

thank you. 

link to YouTube  Wobble


  
Last edit: 18 Apr 2023 13:55 by MarkT. Reason: Insert video
18 Apr 2023 12:52 #1

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Replied by RT325 on topic Help! Rear Sprocket Wobble / Alignment

That's interesting. I slowed it to .25 speed & almost feel the sprocket is bent plus the movement on the carrier. I'll take a guess & say--i think the carrier is worn on the hub as usual, & hub extension worn too. So i think the cush rubbers might not be right into place so it's lifting the carrier at an angle & tilting it on the worn parts. The bent sprocke is accentuating the wobble.
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18 Apr 2023 19:15 #2

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Replied by MarkT on topic Help! Rear Sprocket Wobble / Alignment

I'm glad it wasn't just me..  Sprocket definitely looks bent but couldn't tell if it was an optical illusion. 
1963 YG1-T, 1965 MG1-T, Allstate 250, 1970 CT1b, 1971 R5, 1973 AT3MX, 1974 TS400L, 1975 RD350, 1976 DT175C, 1976 Husqvarna 250CR, 1981 DT175G, 1988 DT50, 1990 "Super" DT50, 1991 RT180, 2017 XT250
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18 Apr 2023 21:23 #3

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  • Andy_911
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Replied by Andy_911 on topic Help! Rear Sprocket Wobble / Alignment

Thank you for your help. I have installed a new sprocket which has made no difference. I’ve taken a new video which shows the sprocket carrier is sitting unevenly on the hub. So looks like worn carrier and hub issue described by @RT325. If I take the c-clip off and try to remove the sprocket carrier it won’t slide past the hub extension.
So is this fixable or is my rear wheel junk?
Updated video  Link

Last edit: 20 Apr 2023 06:56 by MarkT. Reason: Insert video
19 Apr 2023 10:52 #4

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Replied by RT325 on topic Help! Rear Sprocket Wobble / Alignment

The hub extension circlip has made a ridge from constant pushing of the carrier. Run a hand file around & the carrier will come off. Then decide what to do next.
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Last edit: 20 Apr 2023 02:17 by RT325.
20 Apr 2023 02:16 #5

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Replied by RT325 on topic Help! Rear Sprocket Wobble / Alignment

I think i'm talking rubbish but is there no chance of a wheel bearing falling to buts & causing extra gyration from balls moving around to one side. Na don't even go there.
Video i'm trying to replay multiple times quickly but getting mesmerized. Once removed all will be revealed.
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20 Apr 2023 02:24 #6

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Replied by Andy_911 on topic Help! Rear Sprocket Wobble / Alignment

Many thanks for your help RT325 - I did the hand file, worked a treat, couldn't work out why the carrier wasn't sitting even on the cush. Rotated the carrier 180 degrees and now sits perfectly even. 

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20 Apr 2023 23:57 #7

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Replied by RT325 on topic Help! Rear Sprocket Wobble / Alignment

Ohhh,k, not sure why that worked but great that it did. Go ride & enjoy.
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21 Apr 2023 02:13 #8

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