disc rotor rubbing on frame while turning?

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disc rotor rubbing on frame while turning?
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flag thunder-nuggets
O+
Posted: Nov 18, 2019 at 18:55 Quote
traqs wrote:
yeah, checked all of them.. Maybe it is just how the bike is designed

no bike is designed to do that, are the dropouts setup right?
flag jamesashton
Posted: Nov 18, 2019 at 19:59 Quote
Pictures of how close the rotor is to the frame below. Just checked spacing, and disc rotor is not rubbing on the disc brake
photo
photo
flag R-M-R
Posted: Nov 18, 2019 at 20:40 Quote
That's not the frame. Those are spherical washers. Their purpose is to accommodate misalignment between the caliper screws and the caliper. Your options:

• Wiggle those washers to the side.
• Grind down the washers for clearance.
• Replace the washers with something narrower.
• Replace the washers with a more compact style, which will probably require shorter screws.
flag Cura
Posted: Nov 19, 2019 at 2:56 Quote
The first step in this case would actually be recentering caliper pistons...
U can see how the right pad is being pulled way more than the left pad. This should also be the solution for rubbing problem.
flag jamesashton
Posted: Dec 29, 2019 at 12:28 Quote
just took the brake off yesterday, and its the brake adaptor that it is rubbing on.. its just a normal adaptor but it makes the brake rub on it
flag wickedfatchance
Posted: Dec 29, 2019 at 14:18 Quote
Have you realigned the caliber and centred the pads as suggested?
The photo indicates a problem.
Get the line on the caliper in the middle on the disc, looking strait on.
Then 'centre' pads.
Correcting this issue never fails to give stronger 'feeling' brakes',and may stop rubbing.
If rub continues, file the damn adapter a bit.
flag jamesashton
Posted: Dec 29, 2019 at 20:38 Quote
gotcha, yeah tried all that, pad in and out, moving washers, recentering, all sorts. might try filing the adaptor next.. thank you
flag R-M-R
Posted: Dec 29, 2019 at 20:48 Quote
The photo shows the fastener hardware - specifically, the spherical washers - are super close to the rotor. You can replace them with different hardware that has a lower profile, if that's what's rubbing.
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