My work colleague has bought a secondhand set of Hope Mono M4 brakes from eBay. They were advertised as being to fit 180mm front and 160mm rear rotors (the main reason for purchase, his bike came with 203mm rotors front and rear). Having sourced the appropriately sized rotors, we've just tried fitting the brakes and, in short, they don't.
After a lot of faffing about, we've established that one of the calipers (No 3 stamped into the back) aligns perfectly with the 180 rotor when fitted on the front and the 160 rotor when fitted on the back. The other caliper (No 8 stamped into the back) sits the pads too far above either rotor in either position.
Can anyone tell me what size rotor the No 8 caliper is designed for?
If it makes a difference, both calipers are IS, being mounted on a 2004 Fox F80 RLT fork and a 2009 Specialized S-Works M5 hardtail frame, Shimano SM-RT97M centrelock rotors and Shimano RM65 hubs.
