joewein
Maximum Pace
- Oct 25, 2011
- 3,532
- 3,693
Recently I've been having problems with shifting gears. My attempts at adjusting the shifting via the barrel adjuster at the derailleur did not resolve the problem. In some gears it works OK, in others it's noisy or jumps back and forth. The behaviour is different with different front chain rings, not sure why that is.
My suspect is the shift cable to the rear: It has been squashed a couple of times when it got caught on the hinge below the bottom bracket while unfolding my Bike Friday after a train ride. Coincidentally, the problem seemed to reappear every time I took the bike on the train again. The cable casing looks kind of flattened where it got caught before, with visible lines across the casing where it got pulled around the edge of the hinge
From the symptoms I am not entirely sure the problem is the shift cable (how much can a chain wear over 4000 km? I'm not very good about cleaning it), but I want to change the cable anyway because of the visible squeeze marks. So I got a new Shimano road shift cable set at Y's and was looking at installing it. It contains 1700 mm of casing, two 2100 mm cables and various end pieces.
My derailleurs are Shimano 105 and the brifters are Tiagra 9sp (4503), with the shift cables coming out towards the inside while the brake cables run under the bar tape.
I have figured out how to remove the rear shift cable: shift to the smallest sprocket, undo the cable at the derailleur end, squeeze the brake lever and push the wire from the derailleur end. I'm puzzled however how to change the casing, which is the part that's damaged in my case and I have not found any instructions anywhere yet. Any advice or useful links?
My suspect is the shift cable to the rear: It has been squashed a couple of times when it got caught on the hinge below the bottom bracket while unfolding my Bike Friday after a train ride. Coincidentally, the problem seemed to reappear every time I took the bike on the train again. The cable casing looks kind of flattened where it got caught before, with visible lines across the casing where it got pulled around the edge of the hinge
From the symptoms I am not entirely sure the problem is the shift cable (how much can a chain wear over 4000 km? I'm not very good about cleaning it), but I want to change the cable anyway because of the visible squeeze marks. So I got a new Shimano road shift cable set at Y's and was looking at installing it. It contains 1700 mm of casing, two 2100 mm cables and various end pieces.
My derailleurs are Shimano 105 and the brifters are Tiagra 9sp (4503), with the shift cables coming out towards the inside while the brake cables run under the bar tape.
I have figured out how to remove the rear shift cable: shift to the smallest sprocket, undo the cable at the derailleur end, squeeze the brake lever and push the wire from the derailleur end. I'm puzzled however how to change the casing, which is the part that's damaged in my case and I have not found any instructions anywhere yet. Any advice or useful links?