love2fly Posted March 3, 2022 Share Edited to correct from KCNC to KMC....My Shimano 10 speed road chain was retired and I fitted a spare on ethat I had, being a KMC 10 speed chain (brand new). I'm getting an issue when I hit a climb and if I'm spinning my legs fast and drop from the outer to inner blade the chain slips for a few pedal revolutions. This morning it slipped when I took it out the car and I could;d see that the chain drops into the space between the 53 and the 39 and obviously slips. The blades are still ok and the 39 is very new. Could it be the chain is ***? Edited March 3, 2022 by love2fly Corrected from KCNC to KMC Link to comment Share on other sites More sharing options...
dasilvarsa Posted March 3, 2022 Share Check if that Chain has a Kinked (bent) Link or 2. New Chain old Chain Rings can Cause Problems. Front Mech Adjustments ? Does Putting the Old Chain Back Solve the Problem ? KMC Chains are OEM on Scott and Merida and and and and is Very Good Chains. Link to comment Share on other sites More sharing options...
love2fly Posted March 3, 2022 Share Ok, my bad. I used logic when I re-installed my OEM Shimano blades after taking off my Rotor ovals... Writing on outer one faces out and inner faces inner (I got the inner wrong and there is a slight offset). Think its sorted now. Lesson: Look at manual even for menial tasks.... ChrisF 1 Link to comment Share on other sites More sharing options...
Headshot Posted March 3, 2022 Share KMC are fine - some bike brands supply them as OE. love2fly 1 Link to comment Share on other sites More sharing options...
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