R1 Brake discs - bobbin movement

[leighz]

'02 R1

should the brake disc bobbins be able to rotate (stock discs)?

Despite tightening a nut and bolt on them 'fairly' tight I still cannot rotate them - should they be able to move or not?

eg.

https://youtu.be/1qoPqN2GBdw?t=3m9s

trying to fix a slight pulse at the lever before buying new discs. They're straight but right hand one has slight variation in thickness (less than 0.1mm)

[Jazoli]

Yes they should rotate, spray loads of brake cleaner on them whilst moving them back and forth with a nut and bolt.

[tom_e]

A little wd40 may also help but obviously make sure you clean the disc properly afterwards.