Advertise on Bikeforums.net



User Tag List

Results 1 to 12 of 12
  1. #1
    Junior Member GB243's Avatar
    Join Date
    Apr 2012
    Posts
    11
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    Help With shifters.

    I have a hybrid bike that has 21 speeds, or 3 x 7, and the gear shifters aren't working so well anymore when i shift down. How do I find shifters that will work for my bike? Do I look for 21 speed shifters or do I get something else?

  2. #2
    Carpe Velo Yo Spiff's Avatar
    Join Date
    Dec 2011
    Location
    Fort Worth, Texas
    My Bikes
    2000 Bianchi Veloce, '88 Trek 900, '88 Schwinn Prologue, '92 Schwinn Crosscut, '03 Diamondback Tandem, '94 Yokota Grizzly Peak
    Posts
    2,499
    Mentioned
    1 Post(s)
    Tagged
    0 Thread(s)
    You need a 7 speed shifter for the rear that is designed to work with that brand. Usually you want the same brand, though there are some compatible aftermarket shifters that will work with Shimano. I presume the rear is where most of the trouble is for you. What sort of shifters are they? Brand name and are they twist shifters, triggers, or thumb levers?

    Might just need some servicing on the existing shifters. Some cleaning, lube & adjsutment.
    2000 Bianchi Veloce, '88 Schwinn Prologue, '88 Trek 900, '92 Trek T100, 2000 Rans Tailwind

  3. #3
    Pentapointed Member ahsposo's Avatar
    Join Date
    Jan 2010
    Location
    On Some Far Away Beach After the Season is Over...
    My Bikes
    A Home Built All Rounder, Bianchi 928, Specialized Langster, Dahon Folder
    Posts
    6,374
    Mentioned
    10 Post(s)
    Tagged
    1 Thread(s)
    Or the springs of the derailleurs have gotten weak.

    Like Spiff sez. Clean, Lube and adjust the derailleurs and see if that makes a difference.
    Quote Originally Posted by toddles View Post
    If I gotta look up words, it's not worth my time.

  4. #4
    Junior Member GB243's Avatar
    Join Date
    Apr 2012
    Posts
    11
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    They don't have a brand name on them unfortunately. They just say 8 speed for the back and 3 for the front. The shifters have a trigger for your index finger and one for your thumb on each shifter. I bought the bike used at Sprockets in Denton so I'm not sure if the shifters are original or not. The bike brand is Specialized. Do you know of any sites that detail cleaning shifters? I try to do repairs and tuning myself.

  5. #5
    coprolite fietsbob's Avatar
    Join Date
    Jun 2010
    Location
    NW,Oregon Coast
    My Bikes
    7
    Posts
    40,071
    Mentioned
    27 Post(s)
    Tagged
    0 Thread(s)
    get out the camera . send those pix.
    Specialized is an importer brand ,
    all the other components come from separate companies.
    odds are favoring Shimano.. big seller to the OEM market.

    price point determines what parts get bolted on the frame
    with the brand logo on it.
    Last edited by fietsbob; 04-18-12 at 12:49 PM.

  6. #6
    Junior Member GB243's Avatar
    Join Date
    Apr 2012
    Posts
    11
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by fietsbob View Post
    get out the camera . send those pix.
    Specialized is an importer brand ,
    all the other components come from separate companies.
    odds are favoring Shimano.. big seller to the OEM market.

    price point determines what parts get bolted on the frame
    with the brand logo on it.
    This is what the shifters look like. I took this one apart but couldn't figure out how it is supposed to spring back to it's original position after shifting.

    One thing I need to add is I am having trouble with my gears shifting, so I adjusted the deraliuer and got the gears to shift better. But not I can't shift to my biggest gear on the cassette. The thumb shifter won't even budge to shift that far.

    Any thoughts on what could be causing this? I really don't want to take it to a shop and have them tell me I need new parts that will cost me over $200 bucks.
    Attached Images Attached Images

  7. #7
    Senior Member Retro Grouch's Avatar
    Join Date
    Feb 2004
    Location
    St Peters, Missouri
    My Bikes
    Rans Enduro Sport, Hase Kettweisel Tandem, Merin Bear Valley beater bike
    Posts
    23,755
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by GB243 View Post
    I have a hybrid bike that has 21 speeds, or 3 x 7, and the gear shifters aren't working so well anymore when i shift down. How do I find shifters that will work for my bike? Do I look for 21 speed shifters or do I get something else?
    Quote Originally Posted by GB243 View Post
    They don't have a brand name on them unfortunately. They just say 8 speed for the back and 3 for the front. The shifters have a trigger for your index finger and one for your thumb on each shifter. I bought the bike used at Sprockets in Denton so I'm not sure if the shifters are original or not. The bike brand is Specialized. Do you know of any sites that detail cleaning shifters? I try to do repairs and tuning myself.
    If you have 7 rear cogs and the shifter says 8-speed, it's a safe bet the shifter isn't original. Actually, although some people claim 8-speed shifters will work fine with a 7-speed cassette, I've never been able to make that combination work to my satisfaction because the rear cog spacing is a "skosh" off.

    If it was my bike I'd get a set of 7-speed trigger shifters.

  8. #8
    Pentapointed Member ahsposo's Avatar
    Join Date
    Jan 2010
    Location
    On Some Far Away Beach After the Season is Over...
    My Bikes
    A Home Built All Rounder, Bianchi 928, Specialized Langster, Dahon Folder
    Posts
    6,374
    Mentioned
    10 Post(s)
    Tagged
    1 Thread(s)
    Quote Originally Posted by GB243 View Post
    This is what the shifters look like. I took this one apart but couldn't figure out how it is supposed to spring back to it's original position after shifting.

    One thing I need to add is I am having trouble with my gears shifting, so I adjusted the deraliuer and got the gears to shift better. But not I can't shift to my biggest gear on the cassette. The thumb shifter won't even budge to shift that far.

    Any thoughts on what could be causing this? I really don't want to take it to a shop and have them tell me I need new parts that will cost me over $200 bucks.
    I think you are looking at the wrong end.

    I think your problem is at the derailleur end.

    If I understand your OP when the cable goes slack it's not down shifting. This would indicate weak derailleur springs, cruddy cable and housing issues.
    Quote Originally Posted by toddles View Post
    If I gotta look up words, it's not worth my time.

  9. #9
    Junior Member GB243's Avatar
    Join Date
    Apr 2012
    Posts
    11
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by Retro Grouch View Post
    If you have 7 rear cogs and the shifter says 8-speed, it's a safe bet the shifter isn't original. Actually, although some people claim 8-speed shifters will work fine with a 7-speed cassette, I've never been able to make that combination work to my satisfaction because the rear cog spacing is a "skosh" off.

    If it was my bike I'd get a set of 7-speed trigger shifters.

    Yeah I know the shifters need to be replaced for sure. I want my bike to run as well as I can get it.

    I also think if I replace those that my derailleur will work better because it is a "skosh" off. Even after aligning it perfectly on the highest gear it won't shift up and it doesn't stay aligned.

    I'm gonna look into taking it to a bike shop later today, just hope their reputation doesn't precede them and they don't charge me an arm and a leg.

    Thanks for the help.

  10. #10
    coprolite fietsbob's Avatar
    Join Date
    Jun 2010
    Location
    NW,Oregon Coast
    My Bikes
    7
    Posts
    40,071
    Mentioned
    27 Post(s)
    Tagged
    0 Thread(s)
    Simplify.. convert to a friction-ratchet pair of thumb-shifters.

  11. #11
    自転車整備士 oldskoolwrench's Avatar
    Join Date
    Apr 2012
    Location
    Denver, Colorado USA
    My Bikes
    '86 Moots Mountaineer, '94 Salsa Ala Carte, '94 S-Works FSR, 1983 Trek 600 & 620
    Posts
    900
    Mentioned
    2 Post(s)
    Tagged
    0 Thread(s)
    Looking at your photos it appears as if you have an integrated shifter/ brake lever combination; the shifter is built in to the brake lever assembly.

    If you have a 7 speed rear end with three sprockets up front, the most economical solution is to convert over to a separate set of brake levers compatible
    with the type of brakes you have, and to use 7 speed SRAM Grip Shift shifters. They require much less maintenance, will work with Shimano drive trains,
    and are less expensive than purchasing a complete set of integrated brake/ shift levers.

    Alan

  12. #12
    Junior Member GB243's Avatar
    Join Date
    Apr 2012
    Posts
    11
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by oldskoolwrench View Post
    Looking at your photos it appears as if you have an integrated shifter/ brake lever combination; the shifter is built in to the brake lever assembly.

    If you have a 7 speed rear end with three sprockets up front, the most economical solution is to convert over to a separate set of brake levers compatible
    with the type of brakes you have, and to use 7 speed SRAM Grip Shift shifters. They require much less maintenance, will work with Shimano drive trains,
    and are less expensive than purchasing a complete set of integrated brake/ shift levers.

    Alan

    Yeah I was thinking about just making the brake and shifter separate but preferred the ones I have now. I took my bike to a shop in my area and they are going to replace the shifters with 7 speed shifters, take a look at the derailleur, and do a basic tune up for me.

    I'm hoping they get my bike fixed up. I can't take not being able to ride in the mornings.

    Thanks for all the advice everyone.

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •