Bicycle TutorBicycle Tutor

Show off your bike!

Related video tutorials:
How to Adjust Your Front Derailleur How to Adjust Your Front Derailleur
* Now with 3D interactive instructions
Rear gears will not shift
I got a 15 speed Murray bike via garage sale. I cleaned it up got the breaks working well, but it looked like it had been left out in the rain. My problem is with the gear shift. My derailing shifter works fine ( it will shift from 5-10-15 no problem, but the other shifter that shifts the gears on the the back wheel, 1-2-3-4-5, does not shift. When I move the shifter the cable stays in the same position on the handle bar. Its like the mechanism that is supposed to retract the cable down towards the bottom of wheel is not doing that. Unfortunately I do not know how the mechanism at the back wheel works, or what it is called, so I do not know how to resolve the problem. I did trace the cable to the back wheel and made sure that it had movement, but when pull the shifter towards me, I can see the end of the cable sticking out by the shifter on the handle bar, like the cable isn't being pulled from the back wheel assembly. Can you give me some insight to how that assembly works and how to fix it? Thanks

As you said, it has been left out in the rain. I wouldn't be surprised if there's some rust within the cable & housing that leads to the rear derailleur.
I'd start by disconnecting the cable from the rear derailleur and then tracing it through to check for movement. More or less, run through the gears on the shifter and see if the cable moves. If it doesn't then you would need to look into freeing the cable by shifting the cable housings around (spray a little WD-40 or Liquid Wrench into the end of the housing, first).
If this works and frees the cable, you can then proceed to lubricating the shift cables around the cable housings and making sure you can slide each cable housing, easily. Of course, if you see the cable that was within the housing and it looks rusted, you might look into replacing the cable housing and shift cable. That might be advisable anyway, depending on how much money you are wanting to put into this.
If the cable is fully freed (or you free or replace the cable), then you can move on to adjusting the rear derailleur.

Why is it that they make adult bikes that'll generally work for 5'9" or above, yet when you pedal these same bikes they only work for someone who is 5'4" or so?

Possibly Related Threads...
Thread Author Replies Views Last Post
  When sitting and riding on mountain bike, front gears will not shift. Mountain 1 5,883 08-23-2016, 10:08 PM
Last Post: DaveM
  [Rear Derailleur] Gears up/down by one cog Infocus 2 3,815 02-09-2015, 05:19 AM
Last Post: budstutor
  I can only use the highest 5 gears on my 8spd rear cog bianchi29er 21 23,986 09-01-2014, 09:35 AM
Last Post: wikey
  Rear and front derailleurs won't shift tsila060 5 13,551 07-19-2014, 07:34 PM
Last Post: tsila060
  Frustrating issue with rear gears crot4lus 4 4,632 07-09-2014, 07:57 AM
Last Post: crot4lus
  Tiagra Rear Derailleur Won't Shift CheddarExpress 2 3,753 02-20-2014, 07:33 AM
Last Post: Joe_W
  Grip shift and rear derailleur problems mtnbikr 2 6,015 09-30-2013, 09:36 PM
Last Post: mtnbikr
  Shimano rear shifter loose - won't shift at all cvondrick 10 31,896 08-15-2012, 09:29 PM
Last Post: BStephens
  Bike won't shift gears at all, please help! Humblebug 4 36,840 06-18-2012, 06:20 AM
Last Post: Joe_W
  Rear shifter does not shift hydegroove13 6 12,760 08-02-2011, 03:12 PM
Last Post: Ontheverge

Forum Jump:

ISSN 1918-3445 © Copyright 2007-2010 Bicycle Tutor / Privacy Policy / Created by Alex Ramon