Help me please

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Whufcrule
Posts: 98
Joined: Mon Dec 24, 2012 14:27 pm

Help me please

Postby Whufcrule » Sun Jan 13, 2013 00:08 am

Hi lads I've just replaced my cassette from shimano tiagra 12x28 to shimano ultegra 11x28 and I'm having terrible chain slipping on the smallest cog on the back?? And it's not lining up very well with the biggest cog on the back any ideas lads I need help ?????????????

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ugo.santalucia
Posts: 18053
Joined: Thu Apr 17, 2008 10:39 am

Re: Help me please

Postby ugo.santalucia » Sun Jan 13, 2013 12:01 pm

Assuming they both have 10 speed, the Ultegra should come with a spacer to fit before the biggest sprockets. Have you fitted it?
Gears might need to be readjusted slightly? If you don't know what you are doing, a decent LBS should charge you less than 10 pounds to re-index your gears

keef66
Posts: 8730
Joined: Tue Apr 29, 2008 09:46 am

Re: Help me please

Postby keef66 » Mon Jan 14, 2013 12:03 pm

Did the new cassette come with a lock-ring? Some 11t cassettes need a smaller lock-ring; the 12t one can foul the chain if used with a smaller sprocket.


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