Replacement springs for SRAM X.9 10-spd RD?
04-04-12, 09:24 PM
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Replacement springs for SRAM X.9 10-spd RD?
I'm working on a RD shifting issue. The primary contributor appears to be drag in the cable housing so I'm replacing it tomorrow night, but in looking around the "web" it appears there have been a fair number of problems with the early production of these RD. I've actually ordered a replacement, but would like to replace the coil spring, but have been unable to find anything online. Any thoughts?
BTW, my setup is a bit unconventional, but it normally shifts perfectly. I'm experienced in setting up an RD, but I have to back off the cable tension too much to reliably have the RD settle on the small cog. For the inquiring minds: Campy Ergo shifters, SRAM RD, Shimano Cassette, all 10-spd.
BTW, my setup is a bit unconventional, but it normally shifts perfectly. I'm experienced in setting up an RD, but I have to back off the cable tension too much to reliably have the RD settle on the small cog. For the inquiring minds: Campy Ergo shifters, SRAM RD, Shimano Cassette, all 10-spd.
04-05-12, 05:38 AM
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Fix what you know is wrong before you go to the trouble of more troubleshooting. Cable drag would certainly cause the problem you are seeing since it is only spring tension which brings the derailleur over to the small cogs.
Replace your cables with good quality lined housings and die drawn stainless wires. Make sure that you cut the housing ends square and file them flat and install the correct ferrules. Make sure that you replace the small lower loop of housing which goes into the derailleur and be certain that it is properly sized so that it makes a smooth curve.
Be sure that the derailleur is clean and well-lubricated with some light oil like Tri-Flow. Ensure that the shifter pull ratio is compatible with the derailleur; Campy + SRAM may be problematic and require adjustment compromises which require everything to be working just right to be successful.
You might consider giving your chain a good cleaning as well.
Springs do not get weak unless overstressed which is unlikely to happen on your derailleur. They either work or they break; a new spring would likely be no stronger than the one you are replacing.
Replace your cables with good quality lined housings and die drawn stainless wires. Make sure that you cut the housing ends square and file them flat and install the correct ferrules. Make sure that you replace the small lower loop of housing which goes into the derailleur and be certain that it is properly sized so that it makes a smooth curve.
Be sure that the derailleur is clean and well-lubricated with some light oil like Tri-Flow. Ensure that the shifter pull ratio is compatible with the derailleur; Campy + SRAM may be problematic and require adjustment compromises which require everything to be working just right to be successful.
You might consider giving your chain a good cleaning as well.
Springs do not get weak unless overstressed which is unlikely to happen on your derailleur. They either work or they break; a new spring would likely be no stronger than the one you are replacing.
04-05-12, 07:27 AM
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Fix what you know is wrong before you go to the trouble of more troubleshooting. Cable drag would certainly cause the problem you are seeing since it is only spring tension which brings the derailleur over to the small cogs.
Replace your cables with good quality lined housings and die drawn stainless wires. Make sure that you cut the housing ends square and file them flat and install the correct ferrules. Make sure that you replace the small lower loop of housing which goes into the derailleur and be certain that it is properly sized so that it makes a smooth curve.
Be sure that the derailleur is clean and well-lubricated with some light oil like Tri-Flow. Ensure that the shifter pull ratio is compatible with the derailleur; Campy + SRAM may be problematic and require adjustment compromises which require everything to be working just right to be successful.
You might consider giving your chain a good cleaning as well.
Springs do not get weak unless overstressed which is unlikely to happen on your derailleur. They either work or they break; a new spring would likely be no stronger than the one you are replacing.
Replace your cables with good quality lined housings and die drawn stainless wires. Make sure that you cut the housing ends square and file them flat and install the correct ferrules. Make sure that you replace the small lower loop of housing which goes into the derailleur and be certain that it is properly sized so that it makes a smooth curve.
Be sure that the derailleur is clean and well-lubricated with some light oil like Tri-Flow. Ensure that the shifter pull ratio is compatible with the derailleur; Campy + SRAM may be problematic and require adjustment compromises which require everything to be working just right to be successful.
You might consider giving your chain a good cleaning as well.
Springs do not get weak unless overstressed which is unlikely to happen on your derailleur. They either work or they break; a new spring would likely be no stronger than the one you are replacing.
I have thousands of miles with this shifting setup and I've actually found the shifting to be extremely robust and not especially sensitive to cable tension. Have the same setup on my single with the exception of a Rival RD.
When I get this issue resolved I'll close out this thread.
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