Brand new Stumpy FS - less than 6 weeks old. My chain keeps throwing in front. If I torque the bike (climbing in the middle ring etc.) and hit any kind of bump, the chain throws down the the granny. Likewise if I am in the big ring, it will throw down to the middle. It doesn't happen all the time but high torque and a few bumps it will. Chain, rings, cassette all look pretty new. There is no slack in the chain (when I put it in the big ring in front and granny in back) so I can't shorten the chain unless I want to limit my gear options.
Any thoughts of what might be going on here? XT crank and Sram drivetrain.
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Thread: Chain throwing off of chainrings