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  1. #1
    Senior Member
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    RD B-screw setting

    I recently installed a rear derailleur, the B screw which adjusts the angle of the derailleurs was set all the way close to the cogs and was hitting the biggest cog.
    I adjusted it so it cleared the biggest cog.

    Is there a recommended setting for this adjustment or should it be as close as possible to the largest cog ?

    Thanks,

    L

  2. #2
    * vpiuva's Avatar
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  3. #3
    Senior Member
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    Dec 2005
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    Atlanta
    My Bikes
    1982 Schwinn Super Sport S/P, 1984 Miyata 610, 1985 Panasonic LX 1000
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    I believe that Shimano suggests (and this matches up with Suntour accushift tech docs at yellowjersey.org) one and one-half links (i.e. three half links) distance between largest cog and RD pulley for optimal index performance.

    Seems to work well for me on both setups, both indexed.

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