Just completed a new build - full suss - mix of new components and old. All seems to work really well in the bike stand, but two annoying issues on first test ride. Any thoughts welcome!
Btw... Cranks old, chain new, rear derailleur almost new. 2x10
1/ when in big ring, the minute I try to put serious power down the chain skips - appears to try to dive into smaller ring
2/ when in small ring, regular chain skipping from jockey wheels - it runs ok but is quite annoying
Can not recreate either problem in the bike stand.
Thoughts? Thank you!