SRAM 1x dropping chain off front

beasty1711
beasty1711 Posts: 8
edited January 2017 in Cyclocross
I have sram rival 1 on my cross bike which generally works well until it's thick goop.
The chain gets spat off the front ring. The best I can figure is that the chain doesn't mesh and sit down onto the ring properly due to gunk and grit and then slips off one way or the other. Does anyone else get this? Or ideas on how to stop it.
I'm running a superstar 38 tooth (wide narrow) at the front and an sram 11:36 at the rear. The chain is sram.


Thanks

Comments

  • Jterrier
    Jterrier Posts: 97
    Too much slack in chain? Is the crank working loose and wobbling the chainring (sram does this a lot)? When you put the chain on are you making sure the right teeth are in the right gaps? Or is the design of the ring such that it cant vent off the gunge - if you look at a lot of them they are scalloped out etc.
  • Jterrier
    Jterrier Posts: 97
    Also is the clutch engaging properly on the mech?
  • beasty1711
    beasty1711 Posts: 8
    Jterrier wrote:
    When you put the chain on are you making sure the right teeth are in the right gaps?
    Thats a fair point.. in the heat of a race i was just trying to slap it on as quickly as possible... Will check this out.
  • beasty1711
    beasty1711 Posts: 8
    Jterrier wrote:
    Also is the clutch engaging properly on the mech?
    From what i can tell, everything in the bottom half seems to be working as it should. Its a new RD so "should" be operational .. but will re-check alignments etc
  • joey54321
    joey54321 Posts: 1,297
    No getting the problem but I am running the same chainring as you, mounted to the inside face of a standard Rival crankset.

    No problems what so ever, even before I bought the clutch rear mech. Ridden it through some pretty atrocious mud as well as through the Yorkshire Dales with absolutely no issue. For the price, they are great chainrings (I think I got the 34 for £13!).
  • trek_dan
    trek_dan Posts: 1,366
    Too much slack in chain, running an 11-36 (do you really need this for racing) won't help. Or worn chain, you'd be surprised how quickly you can wear out a chain on 1x setup if your cross chaining a lot. Never dropped a chain on my SRAM 1x10 setups, even when the drivetrain is so thick with goop you can barely turn the cranks by hand.
  • Jterrier
    Jterrier Posts: 97
    trek_dan wrote:
    Too much slack in chain, running an 11-36 (do you really need this for racing) won't help. Or worn chain, you'd be surprised how quickly you can wear out a chain on 1x setup if your cross chaining a lot. Never dropped a chain on my SRAM 1x10 setups, even when the drivetrain is so thick with goop you can barely turn the cranks by hand.

    This isnt an issue - the chain isnt made slack by the size of the mech, its made slack by being too long for whatever your combo is. Especially not an issue with rival 1's clutch. I run a 10-42! I just have a longer chain that is the correct length for what i run.

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