-
I can't believe you actually put the rotors through the dishwasher, I thought you were joking.
Did they come out squeaky clean?
They did seem to, but I've not ridden either of the bikes since so I don't know if it's cured the issue.
Basically the braking went to shit whenever I hosed the bike down, and it's never returned to what it was like before winter on either bike. I imagine I was washing off the layer of pad material that had gone onto the rotor, and maybe spreading wet-lube from the chain onto the pads from the hose. IDK, but it's annoying and I'm determined to fix it.
Dammit-
I imagine I was washing off the layer of pad material that had gone onto the rotor
The way I understand it is that the layer of pad material that transfers on to the rotor during bed in process is almost microscopic and sort of baked on to the surface. I'm not sure it could be removed from the rotor with a hose even close up.
For what it's worth, I wash my bikes with the garden hose after every ride and never had it cause braking issues. Is it a pressure washer you're using?
I think pad contamination is the likely culprit. Indeed even a tiny amount of chain lube etc will ruin the pads. It's also worth looking in at the pistons to check there's no small leak causing brake fluid to contaminate the pads.
I bled a set of brakes numerous times, changed pads, sanded rotors and cleaned with disc break cleaner only to realise a leaky piston was the problem.I'd buy new sets of pads and even after the rotors have been through the dish washer still give them a clean with muc off disc brake cleaner. I'm not convinced the dishwasher won't have left a residue on the rotors.
TotalShanner
I run 3 sets of the same brakes and swap the wheels around the bikes depending on where I'm riding. The pads are a mix of uber race matrix and sram sintered.
Ideally rotors would be used with the pads they were bedded in with but when I swap wheels and rotors around I rarely notice any difference in braking due to the rotors and pads being mixed up.
Worst case scenario they don't bite quite as much then back to full power after one run on the uplift.
I can't believe you actually put the rotors through the dishwasher, I thought you were joking.
Did they come out squeaky clean?
Pad wise, I find once pads are contaminated that's them completely fucked and no amount of black magic gets them back to normal. Less hassle to buy a new set than mess about with a blow torch or putting them in the oven etc
I still reckon you should ditch the mt7's and get codes. Dibs mt7's if/when you do.