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Re-index after wheel change

fleehouse2fleehouse2 Posts: 82
edited August 2012 in Workshop

Is it normal to have to re-index and re-set the limit screws on the rear derailleur after changing to a new wheel?

Last night swapped out the knackered stock Alex Rims (no idea what the hub is, which was no longer freewheeling) on my 2012 Spez Allez Compact to some R501s, after fitting the new wheels the index'ing was out and the rear derailleur was clipping the spoke when on the innermost sprocket.

I corrected the limit screws and indexing, following the online park guide, it now shifts ok on the stand, have not ridden it yet though.

I re-used the same cassette (8 speed shimano) as only a couple of months old, didn't really expect to have to adjust so much, just want to make sure this is expected and I have not done something wrong.




  • cyclecliniccycleclinic Posts: 6,863
    Yes it's normal. -wheel building and other stuff.
  • jgsijgsi Posts: 5,025
    Is it?
    I am always swapping wheels about - training rides/race-turbo setup... even from time to time swapping cassettes.. as running 9 and 10 speed on different bikes.
    never have to faff about doing re indexing, it just carries on working... ok may have to give barrel adjuster a 1/2 turn CW or ACW but 99% of time, swap and go
    Must be lucky , I guess.
  • deswellerdesweller Posts: 5,271
    It's not unusual for different hubs to give slightly different cassette positions.
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  • cyclecliniccycleclinic Posts: 6,863
    is not 1/2 a turn on the barrell adjuster an adjusment? -wheel building and other stuff.
  • Thanks all, will commute in on it tomorrow, see how it goes .
  • leflef Posts: 728
    the only wheel I have had to re-index for is a xero (which was cheap tat). Shimano, mavic, easton, planet X, IRD have always been interchangeable without adjustment for me. IME it is the norm not to have to adjust.
  • It rode in OK this morning, so job's a good 'un
  • snoopsmydoggsnoopsmydogg Posts: 1,110
    i had the same issue when swapping from standard raleigh wheels to r501s where the rear mech would rub the spoke slightly when on largest cog.

    only a small difference and about 1/4-1/2 a turn of the limit screw sorted it, indexing was still spot on though
  • mercia_manmercia_man Posts: 1,365
    Yes it is normal. Even changing a worn out cassette for an identical new one can sometimes mean having to tweak the indexing slightly.
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