After converting a Frankenbike from a 3x10 to a 1x10 with a 30t narrow-wide chain ring and a SunRace Wide Ratio 11-42 Cassette it seems like there is some kind of slippage going when on the smallest cog. When its on the stand, everything seem fine... perfect indexing. But when under heavy load I feel the slippage. The weird thing is, say I start on the smallest cog...and visually confirm that the chain is sitting fine... then I pedal after a bit, say after 6 or 7 heavy cranks and I feel the slippage, then I stop the bike, look down and everything appears to still look fine. The chain stays on the smallest cog, so it isn't "jumping" gears. This issue does not seem to happen on any other cog other than the smallest.
The chain, cassette, chain ring, and derailleur hanger are all relatively new. The chain has also been properly sized. I am using an old XT Derailuer (no clutch). I am guessing it could be the jockey wheels or a slightly bent cage. Perhaps a chain tensioner would help (which could explain why it is only happening on the smallest cog which would create the most slack)?
Thanks in advance for any suggestions...
The chain, cassette, chain ring, and derailleur hanger are all relatively new. The chain has also been properly sized. I am using an old XT Derailuer (no clutch). I am guessing it could be the jockey wheels or a slightly bent cage. Perhaps a chain tensioner would help (which could explain why it is only happening on the smallest cog which would create the most slack)?
Thanks in advance for any suggestions...