Question about Shimano Cycling

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Hello, I just bought a used Schwinn bike with Shimano thumb shifters. When I ride I can feel when I need to change gears, but I don't know what the procedure is to do so. Is there a manual that can help me out? thanks

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  • barbschild May 03, 2010

    Hello, blueextc3221 at fixya had asked for the make of my bike, and I had responded (Schwinn Highplains) but have never received a response or any help. I hope to ASAP!!!!!!




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What is the model of the bike?


Posted on Apr 25, 2010

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  • blueextc3221
    blueextc3221 May 03, 2010

    What is the approximate age? As the Hiogh Plains has been made since the 80s.

    Is it possible to post a picture? Especially of the shifters?

    They should switch gears by simply pressing down a tad for downshift, and up for upshift.

    The left is for the main sprocket (by feet).

    The right is for the wheel sprocket.

    Main gear steps up in whole gears.

    Wheel gear steps in increments.

    The faster you are going - the bigger the gear you want to be in... as the pedals will go around less often.

    Going uphill - you want the smaller gears selected for more torque and ease of peddling.

  • blueextc3221
    blueextc3221 May 03, 2010

    Sometimes specs don't match the actual components - because in/around '93 Schwinn was filing for bankruptcy, and had to use parts already in inventory, and that meant the same bike could have different shifters - and not match the manual.

    They were still importing bikes from Giant, bought into the China Bicycle Company, and were trying to import bikes from Hungary (I believe Greensville was closed by this time). Another thought, that might be tied to the first, is that around this time, SRAM only had shifters available.

    To source a bike with SRAM shifters, you ended up paying more for components from Shimano (Suntour went away around this time too), because you were not buying the complete groupo. SRAM ended up taking Shimano to court, and settled out of court some time later. My thought is that if Schwinn was looking for every way possible to save a penny, and SRAM would have cost more, it's feasible they just put the shifters you have on there now to save a buck... as you dont usually find thumbshifters on a mountain bike.

    See if you can post pics. I am interested to see.


  • blueextc3221
    blueextc3221 May 03, 2010

    Or are the "thumb shifters" rotary ones on the handlebar (makes more sense).

    In this case - the numbers indicated on the dial are the gears.

    But again - the left being the main sprocket by the pedals, and the right being the wheel sprocket.

    Each time you click to a new number - the gear will change.

    Do not skip gears in this type of shifter. Let each one engage before moving to the next.

    Let me know.




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