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Thread: New Shifters

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    New Shifters

    What can y'all tell me about Shimano STX 7 speed Rapidfire shifter/brake levers, I am looking at buying. They have cantilever brake levers, and are said to be in great shape. I am going to use them to upgrade my Gary Fisher. Also the current shifters are suntour, and the r/dr and shifter seems to be indexed. I am guessing this since it clicks when shifted. The f/dr and shifter seem to be friction, no clicking. So does that mean that I have to change the f/dr but not the r/dr? Let me know if I have this right or not please.

    Thanx
    kingajo

  2. #2
    Senior Member demoncyclist's Avatar
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    I believe that you will be fine without changing anything. The indexing is in the shifter, not the derailleur.
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  3. #3
    Senior Member Retro Grouch's Avatar
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    Not what you want to hear.

    Quote Originally Posted by kingajo
    What can y'all tell me about Shimano STX 7 speed Rapidfire shifter/brake levers, I am looking at buying. They have cantilever brake levers, and are said to be in great shape. I am going to use them to upgrade my Gary Fisher. Also the current shifters are suntour, and the r/dr and shifter seems to be indexed. I am guessing this since it clicks when shifted. The f/dr and shifter seem to be friction, no clicking. So does that mean that I have to change the f/dr but not the r/dr? Let me know if I have this right or not please.

    Thanx
    kingajo
    Shimano doesn't talk to Suntour very well. It seems like the freewheel spacing is just off enough that it doesn't index. My experience has been that I've had to change both derailleurs and the freewheel to get everything to work to my satisfaction. Sorry.

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    Thanx for the info. I expected that I would have to make a few changes to the rest of the drive train. But I am also itnterested in which is better STX, LX, Alivio? These are the only models in Shimano that I have found in 7 speed that are fairly new and available.
    Thanx

  5. #5
    cycles per second Gonzo Bob's Avatar
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    Quote Originally Posted by Retro Grouch
    Shimano doesn't talk to Suntour very well. It seems like the freewheel spacing is just off enough that it doesn't index. My experience has been that I've had to change both derailleurs and the freewheel to get everything to work to my satisfaction. Sorry.
    I agree - with a slight difference. I've used Suntour freewheels with Shimano shifters/derailers with good results. But I've never been successful with mixing shifters and derailers of the two manufacturers. The cable travel requirements of Shimano and Suntour derailers must be just a little bit different.

    If you get the new shifters, you probably will have to change the rear derailer but not the front.

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    Senior Member Retro Grouch's Avatar
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    Quote Originally Posted by kingajo
    Thanx for the info. I expected that I would have to make a few changes to the rest of the drive train. But I am also itnterested in which is better STX, LX, Alivio? These are the only models in Shimano that I have found in 7 speed that are fairly new and available.
    Thanx
    In descending order of quality LX, STX, Alivio.

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    Thanx all.

  8. #8
    The Red Lantern Rev.Chuck's Avatar
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    Unless you can find some old stock the STX will be the best seven speed you can find.

    Sometimes you can dirty trick your suntour der into working with the shimano shifter by running the cable on the back side of the der binder bolt. It changes the ratio of pull. Good Luck
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    Thanx Rev.

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    Senior Member Gibbygoo's Avatar
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    Quote Originally Posted by Retro Grouch
    In descending order of quality LX, STX, Alivio.
    So will LX shifters and derailleurs work to replace STX if both are 7 speed???

  11. #11
    Senior Member Retro Grouch's Avatar
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    Quote Originally Posted by Relayer
    So will LX shifters and derailleurs work to replace STX if both are 7 speed???
    Yeah. The key is that the shifter and cassette have to match in number. As the number of cogs on the cassette has increased over the years, the cog spacing has also changed so you have to have a shifter that pulls the right amount of cable for that cassette.

    I'm also thinking that, when you make the move to Rapid Fire shifters, you may also have to upgrade your front derailleur to get it to work with the indexing.

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