This must be disk brakes right?

[united4ever]

It keeps intermittently sticking. Nothing on the drive train I can see.

https://x.com/Sharrowval2711/status/1764360892517429383?s=20

https://x.com/Sharrowval2711/status/1764361242242593147?s=20

If I ride it I can push through it, it doesn't throw me over the handlebars or anything, but obviously needs fixing.

Was thinking of releasing the caliper in disk brakes, pushing them apart and holding the brake whilst retightening. But of dirt on the rotor too, how do you clean that. I have had the filthiest commute through the wettest winter so am sure it has taken its toll.

Attaching pic of disk brakes too

 

[Deleted member 121159]

Can't tell only from the photo but it would be a good idea to clean and recentre the brake caliper and see if the problem goes away. You have to take the pads out, clean the pistons, then push them in (I normally use a tyre lever for this). Don't push them before cleaning to avoid dirt and grime getting inside the caliper. After reinstalling the pads you have to recentre the caliper so the pads don't rub on the rotor.

 

[avsd]

Have a look at the the Park videos -

How to Align a Hydraulic Disc Brake on a Bike. Here is the link Park Tool​

There is another video for mechanical disc brakes Mechanical disc brakes.

 

[boydj]

Are you sure it's not the mudguard - looks very tight. I had this problem when I changed to a tyre with a slightly higher profile.

 

[PedallingNowhereSlowly]

As you've reproduced the problem on the stand, if you think it's the disk brakes, drop the pads out and see if it still happens.
That will rule them in or rule them out.

You've got at least a few other possible culprits (hub bearing, hub gearing, mudguard).