SRAM CL on a road bike. I can't set the caliper up right because the rotor isn't true (maybe as a result of a big crash a couple of months ago) and so it runs on part of the rotation.
I've had this many times before and with an adjustable spanner and a bit of patience have managed to true it back. And indeed I can do the same here too, and get it free running where it takes half a minute to spin down.
Then I go for a ride, incident free, and get back home and it'll manage maybe 5 rotations before stopping because it's gone off true again! It's knocking at least 100W off my power 😉
Any tips - might take my plumbers blowtorch to it and then try straightening. Assume in the oven won't be hot enough. Or just get a new one?
I've got about a 40% success rate with straightening rotars. I've made some worse than when I started.
If I can't sort it straight away I give up and buy a new one.
I think if you get them hot enough and distort them, the metal will always want to spring back to its now deformed shape once it gets hot again.
I reckon get it hot enough again and then bend it back, it'll probably stay true
Or you'll crack it.
Hydraulic press might flatten it again, people with them swore by them back in the day. If you don't have access to one you would be cheaper with a new rotor.
SRAM do seem to make quite a lot of bent stuff. See my thread on a wobbly GX cassette…🙄