johanpre44 Posted February 17, 2015 Posted February 17, 2015 I've been using an SLX Shadow Plus RD for the last 6 months and 1600km, most of the time I have the clutch "on" (but have set it to be fairly "loose" in order to improve shifting). When I built my bike I decided to go for a nice set of KCNC alloy derailleur pulleys specifically because I thought the sealed bearings should last longer (especially when doing muddy rides every now and again). When cleaning my bike this afternoon I noticed a fair amount of play on the top pulley (when compared to the bottom one). I realized that this is probably why I have had some shifting issues for the last couple of rides (specifically when changing to the 8th largest sprocket). My question to you hubbers is if you had similar experience with Shadow plus Derailleurs, and if this can be resolved in the long term.
myveonix Posted February 17, 2015 Posted February 17, 2015 Guide versus Tension pulley. G pulley (top) usually has more lateral play than the bottom.
Mongoose! Posted February 17, 2015 Posted February 17, 2015 1x10 set up? If so,I think the rear derailleur works much harder than its designed for (cross chaining)...
Spoke101 Posted February 17, 2015 Posted February 17, 2015 The standard XT jockey wheels work and last way longer than KCNC $!^%.
johanpre44 Posted February 18, 2015 Author Posted February 18, 2015 Guide versus Tension pulley. G pulley (top) usually has more lateral play than the bottom. The Shimano Pulleys are specific for Guide and Tension, think the Guide pulley is built to handle the lateral force better. Even if there is more play. The KCNC pulleys are exactly the same. 1x10 set up? If so,I think the rear derailleur works much harder than its designed for (cross chaining)...Running 2x10, don't think there is a big cross-chain effect on the guide pulley, even when I use the whole cassette on the big ring. The standard XT jockey wheels work and last way longer than KCNC $!^%.Good point, think I will be swapping the KCNC ones for Shimano XT pulleys I'm using on my other bike.
droo Posted February 18, 2015 Posted February 18, 2015 The Shimano Pulleys are specific for Guide and Tension, think the Guide pulley is built to handle the lateral force better. Even if there is more play. The KCNC pulleys are exactly the same. The guide pulley has float to compensate for slight indexing misalignments. It's not a fault with the derailleur or the pulley. Look elsewhere for your shifting issues - bent hanger and worn cables are the two most often overlooked.
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