• I can’t imagine a ten speed cassette and 11 speed chain were happy together.

    How worn out are the chainrings and cassette?

    Did the chain get stuck and you kept pedalling leaving only the mech and mech hanger to give way?

  • Thanks James. Front chainrings hardly used, cassette is new. Checked the chain and not physically possible to drop between two cogs, no stiff links either. I couldn't find any evidence online to suggest why the chain shouldn't work but happy to hear otherwise - believe the inner spacing of the links is the same? I've bought a 10 speed replacement anyway.

    It happened within a flash: shifted up a cog on the rear, continued forward on the flat and didn't have time to stop before the drive train locked up and the chain snapped!

  • I can’t imagine a ten speed cassette and 11 speed chain were happy together.

    Stridsland (can’t remember their forum name) has been posting stuff on Insta that suggests otherwise. Think the internal width is the same but the external is smaller on 11 speed chain so it actually runs smoother and quieter on an 10 speed cassette.

  • I can’t imagine a ten speed cassette and 11 speed chain were happy together.

    Won't make the slightest bit of difference whether it's a 10 or 11 speed chian. The interal spacing for the chain is the same for 10 and 11 speed chains, and the cassette has no idea what the external width of the chain is. Whatever the problem is, it's not that.

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