Shimano Dura Ace Di2 ST-7970 STI "cog repairs" Questions

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...Alivio Gears on my Cannondale F6 MTB and the gears are trying to change down a gear on the rear cogs (go to the larger cog) and need adjusting - which screw is the one to tighten or loosen? Luke ...

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THE CHAIN RIDES OVER THE LARGEST REAR COG,AND DOESN'T CHANGE DOWN TO THE SMALLEST,CHANGING UP TO THE LARGEST COG,IT IS ON IT AND STILL ANOTHER GEAR CHANGE TO GO Hi, This one's easy enough.. If you ...

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...speed rear derailleur, short cage and 13-26 cassete. New chain, new cassette. Derailleur tensioner cog / cage jams against cassette between 26 and 23 (don't even think about pedalling backwards when ...

when i change gear on the front cogs it doesn,t stay on unless i hold the gear shift Start here: http://parktool.com/repair/readhowto.asp?id=117

Question about Sram Cycling

1 Answer

Very noisy shifting .jumps across one of the middle cogs http://www.parktool.com/blog/repair-help/rear-derailler-adjustments-derailleur

...however it was having trouble with keeping the rear derailler in the highest position (biggest cog). It is now up to a point where the double-tap shifters can not hold the derailler in the top ...

chain rubs outside of cage in big ring small cog gear. New bike, just had its first tune up at 200 miles a week ago. The outer limit is too close in or the cage is misaligned or the BB is too short or

Question about Shimano Cycling

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I have set up my di2 as per instructions but on the small ring on the front and moving to second from third gear the chain keeps jumping between the cogs how do you fine tune or have I done something ...

...chain touching front derailuer when middle gears in back are used. Noise only stops when smallest cog in back is utilized. ...

...an electric RMartin R10H, and replaced the 9c motor hub. But, the derailed is no longer aligned. Cog needs to be moved outward by 3/8 inch or so. Is such an extender available? Are adjustment ...

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