Front Shifting Problems- Mtbr.com
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  1. #1
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    Front Shifting Problems

    Having problems shifting from small ring to big on my Puffin, I can only shift if the chain is on the smaller cogs at the back.

    Set up is Mr Whirly cranks, Deore triple shifter and mech but just using the small and middle settings.

    Chain length seems OK.

    I can't change the H screw because the mech will rub on the crank, similarly the mech is quite High, about 8mm above the chainring. If I put it any lower it won't move far enough over to shift the chain before it fouls the crank.

    Any thoughts?
    If you need me I'll be at the bar

  2. #2
    Spooooon!
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    Which version of the Mr Whirly cranks are you using? The ones that are offset for the Moonlander won't work on a Puffin without swapping to the longer offset derailleur mount. I ran into the same problem with mine, but I was playing with different spiders on a Middleburn crank. I ended up with a 2x front shifter and less offset in the spider to make it work.

  3. #3
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    Getting the Moonlander version was my first mistake! But I've got the right axle now so that bit's sorted
    If you need me I'll be at the bar

  4. #4
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    Actually raised the front mech about 5mm and shifting is fine!
    If you need me I'll be at the bar

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