Moving my rotor inboard/ caliper outboard

Just setting up my new 105 brakes, and on the rear of the bike, the caliper is pushed as far out as it can be, but could do with being 1-2mm further outboard... either that, or is there a way to move the rotor in board somehow?

This is a flatmount caliper, and a 6 bolt rotor using an adaptor to fit a centre lock hub....

Previously I had this same frame using a flamount adaptor and running a post mount caliper... and it was fine like that....

1 Attachment

Tried a centrelock disc already?
Could alternatively mill the adapter (from the back), but that's a whole can a worms

Alternatively file the frame but I reckon that you don't wanna do

Or bend the rotor with these alignment tools. But that's a bodge

Yeah, I'd considered filing either the frame or the caliper... beyond my skill set though (to do it right!)...

I'm hoping there's some.kind of shim that exists for this issue, but I can't find anything!

Will try getting my hands on a centrelock rotor to see if that works... 👍🏻

I use a washer on my QR wheel to push it over a bit

You need an inverse shim, it doesn't exist. Best you can do is space the wheel over a little as Elswick says.

An actual centerlock rotor might be in a better place Vs the 6 bolt adapter

Right, next door neighbour let me borrow his 140mm centre lock rotor... it fits perfectly... I have my answer!

I'm also going to invent some kind of anti-matter-inverse-shim 👍🏻

next door neighbour let me borrow his 140mm centre lock rotor

Not Bastard Neighbours thread >>>

Glad it’s solved.

Eiswick’s suggestion of an axle spacer/washer is a solid suggestion, for future reference.

Got the same problem many times, the adaptor won't lay the rotor in the place it should. Don't ever go filing caliper mounts and other bodges, it's usually that or somebody misplaced a spacer in the hub.