My rear Avid Elixir R will not fully clamp down on the rotor.
If I spread the calipers fully open and pull the lever the calipers come in quite far and only retract a hair (so far so good). But I have worn pads and at this point they are barely making contact with the rotor. A second pull should bring the pads in closer Subsequent pulls only bring the calipers a little bit and retract to where it was after the first pull. I've looked at the service manual and can't tell what part is responsible for this self adjustment. I assume it's something in the lever.
This happened to me last time I spread the calipers and it took about few hours of riding and it fixed it self.
Mtbr's 2016 Winter Biking GearReviews and Roundups
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Thread: Elixir r does not self adjust