Help please 😂. Rotor not aligned with caliper.

Is it a new frame? I’d be looking for help from the retailer

Take it to a bike shop and get the mounts faced.

If it's a new frame then speak to the retailer.

If not, what kind of brake mounts does it have? Post Mount or flat mount sometimes need to be faced. A good bike shop can do it or careful use of a file can sort a steel or aluminium frame. Carbon probably needs a shop for the fancy Park Tool tool. 

Are they new pads? Yes, the new frame may need fettling, but the old one may have too. Limit of tolerance on the old one and worn pads could equal limit of tolerance the other way on new one.

It's not super likely, but it's cheap - try new pads. 

Posted by: nickfrog

↑

Those brakes were fine on the old frame so the culprit seems to be poor brake bosses alignment on the frame.

Solution?

Worth talking to the retailer before you try doing it yourself though.

Maybe try thin washers to adjust alignment. That'll be the cheapest thing to try initially. You could then file/linish a shim depending on your access to tools etc

So I bought the full bike on eBay from an elderly gentleman who rode it twice. I did try the bike and can't remember any brake rub but it was set up mushy lever style like most bikes so much more clearance. I run very low clearance.

I then stripped it down to the frame and rebuilt so unlikely to get warranty support.

Will try new pads. And if that fails the shop to file but can they do that in terms of alignment? Do they use a jig or something? Do I need to strip the frame?.

I have very little trust in LBS normally so quite a leap of faith.

Thanks for the support!! Appreciated.

Not using adapters btw, it's a 180mm rotor on a frame natively designed for that size. The rotor is almost perfectly straight btw. I tried another new rotor and that didn't help.

Can't help with the shop thing - I don't trust them either!

Other option with the pads is to flip them round of course. 

Also, try conical washers on top of the calipers, it can sometimes give just enough adjustment if the two mounts aren't parallel.

Post or IS tabs can be faced with a special tool, very accurately. At times it wasn’t uncommon for new bikes to require this, find a mechanic with the correct tool.

A cheaper and less accurate option is to use a file and do it by hand or use some special washers, I think Hope did then, like a “C” shape. If I go down to the workshop later I’ll post a picture up.

It’s worth doing properly at the beginning though - don’t spoil the ship for a ha’peth of tar!

Have the mounts faced. Ditch the conical washers if you have them, replace with flat washers. New pads.

Have the mounts faced. Ditch the conical washers if you have them, replace with flat washers. New pads. Pump, clean and lubricate pistons, reset for even pressure.

Thanks. Spoke to the LBS and they don't have the right tool, apparently it's quite expensive. I am quite relieved in a way as they are shit anyway. I have tried to file myself but that's tricky as I don't want to file too much or the wrong way., which I am very confident I will do. Either way it didn't do anything.

I just want some washers that can offset the issue but I don't think they exist, way too small a market. Can I just bodge it with small strip off aluminium from a drinks can?

I tried to swap the pads to no avail.

Running out of ideas as I'd rather not ride it than having constant rubbing. I have another bike.

Where abouts are you?

West Sussex

Freeborn would have a brake mount facing tool I’d have thought? They close by?

^ good point. I am not far from Horsham!

Done!

Had to sacrifice my last can of cider but just a bit of it on one side of the bolt made enough difference.

Thanks all. Will have it done properly if I keep the frame long enough.

[img] [/img]