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  1. #1
    Glutton for Punishment
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    Homemade grip shifters?

    I'd like to change over from my friction-type bar shifters to twist-grips. I was thinking I could persuade a couple of motorcycle throttle grips to do the job, but before I root through the local cycle salvage I thought I'd see if anyone has already undertaken a similar project, or if friction-type shifter grips are available.

  2. #2
    The Rabbi seely's Avatar
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    SRAM still makes them in their low end Gripshift lineup.

  3. #3
    Glutton for Punishment
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    I just checked out their website, and I didn't see anything that stated it was compatible with older non-indexed derailleurs. Which model were you referring to?

  4. #4
    Senior Member sydney's Avatar
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    Quote Originally Posted by mswantak
    I just checked out their website, and I didn't see anything that stated it was compatible with older non-indexed derailleurs. Which model were you referring to?
    I duno what you are trying to do, but index shifters are generally not compatible with pre index or non index type derailers. A friction twist shifter, if that is what you are referencing,would be compatible with index or non index RDs.

  5. #5
    Glutton for Punishment
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    That's exactly what I'm after -- a friction twist shifter. I'd been thinking I could modify a motorcycle throttle into one, but if they're available somewhere, that'd be the path of least resistance.

  6. #6
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    In Some of the replacement gripshift sets - only the right one is indexed. Maybe you could use another left one as your rear derailleur shifter. Just a thought.

  7. #7
    The Rabbi seely's Avatar
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    Hm yeah I forgot the rears are always indexed. Front is easy, I think the MRX or something like that has the friction front.

  8. #8
    Senior Member
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    Motorcycle throttle grips wouldnt work, because the bicycle derailler cable travel is too small - you would be overshifting all the time.

  9. #9
    Glutton for Punishment
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    Cable travel on motorcycle throttles is varied. I've had some bikes you'd swear you needed two handfuls to open up, and then there are racing throttles with only about 1/4 turn. The latter would be useable as a shifter. I saw an aftermarket throttle that uses bevel gears, a la BMW 'R' series, to allow the cable to enter parallel to the bars. If the travel is acceptable, that'd be one answer at about $20 apiece.

    The guy at the LBS also mentioned using front grip shifters on both sides.

  10. #10
    Senior Member DieselDan's Avatar
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    I've seen friction type grip shifters on low end department store bikes made by Falcon. I don't know where you can get them other them finding a bike at a store and buying the bike to get them.
    Bikes use brakes to stop.

    If your bike has breaks, don't ride it.

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