Look, all good. Looking at a kids bike that needs some repairs. I had it in my head that up to 11sp the pull ratios were the same, but not 11sp so I though I's check.. I'll actually price up going 9sp WR cassette with a 10sp derailleur which I know will work.
Looking to increase cassette range. Will a shimano 11sp long cage derailleur work with a 10sp cassette/ shifter? Only asking as it's hard to find 10sp derailleurs at the mo so was wondering if an 11sp would work?