The story is this. I have a Klein Palomino that I have been riding with V brakes.
I then decided to switch to discs. Bought some Shimano centrelock XT hubs on 717 rims and Magura Julie brakes through the forum.
I have installed the wheels and brakes.
The front wheel set-up is excellent - once I realised that i needed a 180mm rotor.
The rear wheel is a disaster (apparently) as applying the brake causes huge vibrations. To recap, this is a Magura Julie caliper (with good but secondhand pads) on a Shimano 160 centrelock rotor.
So far, I have checked that the alignment of the caliper is good (it is), that the centerlock is tight (it is) and that the rotor is not bent (its isn't). There is a tiny amount of movement in the centrelock if I put the brake on and just rock the bike back and forwards but no more than on the front.
I have also stripped and re-balled and re-lubed the rear hub - it is tight and spins freely even with the caliper fitted.
Can anyone advise what on earth could be wrong with the thing?
My only thought is that it may require bedding in.