I have a Sachs rear derailleur, with index shifting via twisting handgrip. When I shift to a smaller gear in the back, it may take seconds for the shift to take place. When I watch the rear while shifting, the cage moves very slowly. If I push the cage toward the spokes with my thumb, it immediately springs back out to its limit. I don't see any place where the cable could be binding. It's also extremely hard to shift to bigger gears in back now. I've had this bike about 1 year, ride it an hour most days in the morning. When I got it (from a friend) it shifted crisply and easily, amazingly so.
Any suggestions on what to look at next would be greatly appreciated....
I have a Sachs rear derailleur, with index shifting via twisting handgrip. When I shift to a smaller gear in the back, it may take seconds for the shift to take place. When I watch the rear while shifting, the cage moves very slowly. If I push the cage toward the spokes with my thumb, it immediately springs back out to its limit. I don't see any place where the cable could be binding. It's also extremely hard to shift to bigger gears in back now. I've had this bike about 1 year, ride it an hour most days in the morning. When I got it (from a friend) it shifted crisply and easily, amazingly so.
Any suggestions on what to look at next would be greatly appreciated....
I have a Sachs rear derailleur, with index shifting via twisting handgrip. When I shift to a smaller gear in the back, it may take seconds for the shift to take place. When I watch the rear while shifting, the cage moves very slowly. If I push the cage toward the spokes with my thumb, it immediately springs back out to its limit. I don't see any place where the cable could be binding. It's also extremely hard to shift to bigger gears in back now. I've had this bike about 1 year, ride it an hour most days in the morning. When I got it (from a friend) it shifted crisply and easily, amazingly so.
Any suggestions on what to look at next would be greatly appreciated....
One reason that the cable may be binding is that it's starting to break up. Broken individual strands at the affected site will bind in the conduit or housing and cause the problems you're seeing.
Replacing the inner with a new one is generally easier than refitting the old one if that's completely removed for inspection.
Have you checked the chain for excessive wear? This can cause sluggish shifting (but not slow movement of the derailleur cage).
I have a Sachs rear derailleur, with index shifting via twisting handgrip. When I shift to a smaller gear in the back, it may take seconds for the shift to take place. When I watch the rear while shifting, the cage moves very slowly. If I push the cage toward the spokes with my thumb, it immediately springs back out to its limit. I don't see any place where the cable could be binding. It's also extremely hard to shift to bigger gears in back now. I've had this bike about 1 year, ride it an hour most days in the morning. When I got it (from a friend) it shifted crisply and easily, amazingly so.
Any suggestions on what to look at next would be greatly appreciated....
Clean and grease where the cable goes under the bottom bracket might help.
I have a Sachs rear derailleur, with index shifting via twisting handgrip. When I shift to a smaller gear in the back, it may take seconds for the shift to take place. When I watch the rear while shifting, the cage moves very slowly. If I push the cage toward the spokes with my thumb, it immediately springs back out to its limit. I don't see any place where the cable could be binding. It's also extremely hard to shift to bigger gears in back now. I've had this bike about 1 year, ride it an hour most days in the morning. When I got it (from a friend) it shifted crisply and easily, amazingly so.
Any suggestions on what to look at next would be greatly appreciated....
The pivots derailleur itself may be gummed up. Try lubing the pivots while moving the derailleur across its range over and over.
I have a Sachs rear derailleur, with index shifting via twisting handgrip. When I shift to a smaller gear in the back, it may take seconds for the shift to take place. When I watch the rear while shifting, the cage moves very slowly. If I push the cage toward the spokes with my thumb, it immediately springs back out to its limit. I don't see any place where the cable could be binding. It's also extremely hard to shift to bigger gears in back now. I've had this bike about 1 year, ride it an hour most days in the morning. When I got it (from a friend) it shifted crisply and easily, amazingly so.
Any suggestions on what to look at next would be greatly appreciated....
new inner wire and 5mm housing and a bassworm..helps gripshift a lot.
I have a Sachs rear derailleur, with index shifting via twisting handgrip. When I shift to a smaller gear in the back, it may take seconds for the shift to take place. When I watch the rear while shifting, the cage moves very slowly. If I push the cage toward the spokes with my thumb, it immediately springs back out to its limit. I don't see any place where the cable could be binding. It's also extremely hard to shift to bigger gears in back now. I've had this bike about 1 year, ride it an hour most days in the morning. When I got it (from a friend) it shifted crisply and easily, amazingly so.
Any suggestions on what to look at next would be greatly appreciated....
sticky cable. clean, replace housing, and use a ferrule that has a seal in it.
