I have a Cannondale Adventure 500, and would like to get new brake pads, but have no way of knowing which variety will fit the "Cannondale Expert with cartridge pads" system on my bike. I'm in West Africa, so I'd like to get this right the first time. I've spent about 5 hours searching the net for the answer to this question but to no avail.
The existing pads are 2 and 3/4 in long, or 7cm, black rubber. They slide into a slot and are locked in with a small cotter pin that goes through a groove in the top of the pad.
too many bikes from 1967 10s (5x2)Frejus to a Sumitomo Ti/Chorus aluminum 10s (10x2), plus one non-susp mtn bike I use as my commuter
They are definitely not Campy pads, as none were ever that long, or had a notch for a retaining pin.
Given the length, I suspect they're more likely Shimano V-brake style pads, which used a cotter pin retainer. scroll down to the V-type inserts at the KoolStop site, and see if these look right.
Of course the devil is in the details, and others made similar shoes, though many other brand shoes use the same insert. To be sure you'd need to measure hem at the widest part of the back dovetail, and measure the distance from the back to the cotter pin cutout.