Yes, both cassette and chain are brand new. A few years back I replaced only the chain and ended up with lots of slippage, but in the top 2-3 gears (and ended up replacing the cassette). So, I get what you're saying about new meshed with old.
You suggestion about the lock ring not being torqued enough was on my mind as well. I thought I tightened it down enough...maybe not. That was my thought behind pulling the cassette to see if there are any unwanted scrapes or marks on the freehub. I was wondering if anyone had any other suggested possibilities that I hadn't thought of.
I'll post back what I find.
Thanks for the help.
Cheers...Steph
Originally Posted by
KevinF
Chain slip usually means that the chain isn't meshing with the gears. The chain was replaced; is the cassette brand new as well?
What you're describing sounds like a worn-down 11t cog not meshing with a new chain.
I've also seen some weird issues happening when the cassette lockring isn't fully torqued down.