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#1
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Shimano LX B-Tension Adjustment: Need Heavier Spring?
The jockey pulley on my hardtail is riding against the 2 largest cogs.
It appears that there is insufficient spring tension even with the B-screw adjusted fully in. The chain length seems right and there is little force on the derailleur from the cable (it is the very flexible IRD metawire). After reading a number of posts to this group, I tried some of the suggestions including a longer screw. None seemed to help. Manually rotating the derailleur indicates that there is more than ample range of motion available; however, it appears that the spring is simply too weak. Is the spring replaceable and is there a spring available that has a higher spring rate? Is it possible to remove the spring and re-install it with an extra turn or two to increase the preload? The derailleur is a Shimano LX special edition that was only avaible in a black and gold finish. The cassette is an XT with a 34 tooth cog. Thanks in advance for your help. |
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#2
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HKEK wrote:
The jockey pulley on my hardtail is riding against the 2 largest cogs. It appears that there is insufficient spring tension even with the B-screw adjusted fully in. The chain length seems right and there is little force on the derailleur from the cable (it is the very flexible IRD metawire). After reading a number of posts to this group, I tried some of the suggestions including a longer screw. None seemed to help. Manually rotating the derailleur indicates that there is more than ample range of motion available; however, it appears that the spring is simply too weak. Is the spring replaceable and is there a spring available that has a higher spring rate? Is it possible to remove the spring and re-install it with an extra turn or two to increase the preload? The derailleur is a Shimano LX special edition that was only avaible in a black and gold finish. The cassette is an XT with a 34 tooth cog. Thanks in advance for your help. Sounds like the der cage is not long enough or the chain is too long. |
#3
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Might be. I know the XT is available in different lengths, I can't say
the same for the LX. Perhaps I should just upgrade. |
#4
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Shimano claims that the LX derailleur is compatible with a 34 tooth cassette!
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