Is your Eagle AXS RD 'outboard' in the smaller/higher gears? Can't figure this out...

[eddief]

reinstalled spacer but chain still can't engage biggest cog. could have something to do with chainline going from Ultegra 11 to Eagle 12 and the crankset on my Creo.

[eddief]

If I'm running 1x 12 d and 12 cassette and 12 chain...would ring compatibility cause shifting issues?

[eippo1]

Originally Posted by eddief

If I'm running 1x 12 d and 12 cassette and 12 chain...would ring compatibility cause shifting issues?

I wouldn't think so and you've already confirmed chain length. Have you reset the rear derailleur? Is the derailleur fixing bolt screwed all the way in? Double check the hanger?

[EB]

Originally Posted by eddief

If I'm running 1x 12 d and 12 cassette and 12 chain...would ring compatibility cause shifting issues?

Potentially. You can measure your chainline and find out! OneUp has a good article on this here:

https://www.oneupcomponents.com/page...-and-non-boost

Presuming that you have a non-boost frame, the ideal chainline for 1x is 49mm.

If your crank is a direct mount, typically you will want an offset chainring to achieve 49mm. If you have a 104 BCD chainring, OneUp sells shims that you can use to bring the ring inward to the correct position.

[eddief]

with 142 rear spacing. I thought about spacers that would move chainring inward but I fear the clearance would be really minimal between ring and carbon seat tube. But maybe a couple mm would do the trick.

Also since it is my ebike I could run a smaller range cassette and one is coming in the mail. Wonder if a 44 large cog comparted to the 50 would also effect chainline and allow things to work smoothly.