Sora shifters on a double

doublem_1
doublem_1 Posts: 266
edited September 2012 in Workshop
I bought a Vitus Razor that comes with a Sora groupset. It has a double at the front. But it feels like the shifter for the crank gears (sorry, I am new to this!) is meant for a triple. I was on my second ride and the shifter suddenly didn't want to shift down. The cable was very taught. Went to bike shop and the sorted it out. But it now take two clicks to shift down just the one cog. It also feels quite stiff. Shall I take it to my LBS and get them to adjust it?

Comments

  • Cleat Eastwood
    Cleat Eastwood Posts: 7,508
    it could be the trim mechanism - subtle little pushes and pulls help eliminate chain rub.
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  • drlodge
    drlodge Posts: 4,826
    The left/chainring SORA shifter actually has 4 positions - 1 each for small and large chainrings, and another couple of positions close to the first two, which allow for trimming when you are using small-small and large-large combintations.

    Hence if you are in the "largest" or most outwards position, the first click willl move the shifter only slightly inwards which is a trim position (for use when on the larger rear sprockets). Another click will dump the chain onto the small chainring and put the derraileur fully inwards.
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  • doublem_1
    doublem_1 Posts: 266
    drlodge wrote:
    The left/chainring SORA shifter actually has 4 positions - 1 each for small and large chainrings, and another couple of positions close to the first two, which allow for trimming when you are using small-small and large-large combintations.

    Hence if you are in the "largest" or most outwards position, the first click willl move the shifter only slightly inwards which is a trim position (for use when on the larger rear sprockets). Another click will dump the chain onto the small chainring and put the derraileur fully inwards.

    Excellent description. Thanks a lot. Think I will have a search for a manual or guide on adjusting it myself! Thanks again!
  • fakiee
    fakiee Posts: 7
    drlodge wrote:
    The left/chainring SORA shifter actually has 4 positions - 1 each for small and large chainrings, and another couple of positions close to the first two, which allow for trimming when you are using small-small and large-large combintations.

    Hence if you are in the "largest" or most outwards position, the first click willl move the shifter only slightly inwards which is a trim position (for use when on the larger rear sprockets). Another click will dump the chain onto the small chainring and put the derraileur fully inwards.

    Ahhhh, this explains lot. I though I was going insane when trying to set up a front dérailleur recently!

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