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Genesis IO with Hope X2 160mm rotor mounted on IS-Post bracket.
With the calliper mount slid as far out as possible the rotor still cannot be centralised and rubs. Am I missing something obvious or are these brakes incompatible (surely not?!)?
Seems odd, but a few old fashioned disc brake shims should sort it.
Nah, it's impossible. The calliper is at its furthest out position in the sliders, and yet the rotor sits on the left side of the gap. I want to push the calliper another 1-2mm out to centre it but there is not slide left! It's a Hope XC hub with Hope rotor so I cannot imagine this putting the disk slightly too far out or anything.
If theyre IS fork mounts then Space the adapter away from the fork mounts.
Is it the frame mount? IS or PM?
If it is IS, perhaps you could get the mounts faced and take off a little more material to get it in the right place?
Assuming there is plenty of meat on them?
Rotor shim?
are you sure the wheel hub is put together right?
Just had exactly the same thing with a road rat and XT brakes.
Sorted it with Hope disc brake shims. Come in 1mm or 2mm sizes, £1.99 from crc, work perfectly...
Couple of washers on IS mount to move post mount to left
Perhaps I'm not explaining myself very well. I know how to use small washers to shove the calliper mount in and out, which is why I slide the sliders on the Tech X2s (no need for washers). But my mount it totally as far to the left as possible (looking at the back of the bike in the stand) but it needs to be 1mm more left.
Biggyin - I am thinking that's my only option. Could I do it myself with a file or is this asking for trouble? And then the frame would rust, right?
I think the hub is OK although not sure how it couldn't be as there is no room....OK, hang on, I need to check this 'cos I did rebuild it...
You could file it yourself, but if you dont do it perfectly square.....
Make sure the XC hub has the spacers in the right place and both the end caps seated properly etc etc,
what adapter are you running? Can't remember which but either the front or rear shimano IS to PM adapters have the holes off-centre.
I would definitely check the wheel hub though.
I think you might be onto something here. it looks about right but I only need 1mm so the axle might not be spot on. Now my frikkin problem that I cannot get the free hub off! The lock right appears to be torqued to elephant tightness! Other than 'MTFU' - any ideas for this? My knuckles are gonna be history...
I've used a disk mount facing tool to trim a few mm off an adapter before. Maybe your lbs can help
Is the rim centered - if not I'd guess the hub spacers are to cock.
Christ on a bike! I had to use a crown race tool to get enough leverage to loosen that beast! Now onto the hub...
Right this it bullshit. The hub body (excluding the axle bits that stick out) is sat flush between the bike frame, so I conclude that the axle centring is irrelevant, right?
Does anyone know what the gap should be between calliper mount and disk rotor? I reckon I have 1/16 inch - sorry for imperial but it's close to that than fractions of mm.
How old is the hub, if it's one of the first of their disc hubs then it may be set up for the original IS measurements which had a slightly different centre-line. Another possible is that the hub's not seated in the dropout correctly. If all's ok then i'd get the mounts faced back, they're very rarely perfect, so worth having it done anyway.