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  1. #1
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    shifter question

    This is probaly dumb but, i just bought a Trek 6500. This is my first mountain bike. I have noticed that the shifters change gears in oppasite directions. What i mean is on the right hand the front lever shifts up and the back lever shifts down. On the Left hand the front lever shifts down and the back lever shifts up. This does not bother me at all, i was just wondering if there is a reason for this. Thanks Casey

  2. #2
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    The way I like to think of it: the big lever shifts into a bigger cog (be it front or back). Because the chainrings on the front go from (left to right) smallest to biggest and the cogs at the back go from biggest to smallest. The reason for this (or so I think) is to keep the chain in a straight line in common gears so it does not stretch.

  3. #3
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    Wow, your bike must be messed up.

    Okay, so the real reason why the thumbs and index finger shift in different directions is because the thumbs apply the force and move the derailleur in restitance to the springs on the dearailleurs, and the index fingers release the derailleurs and let the springs do the work. Basically, you'll get used to it in about 30 minutes of riding.

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