Were there any cannondale swingarms that required a 4 bolt hub?

cruso414 said:

there is a frame on ebay right now that says that it requires the use of a rear 4 bolt hub because the disc spacing is different than that of a 6 bolt hub. thanks

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This is going deep, I gotta say. Yes, there were early versions that were spaced differently. You do not need a 4bolt hub though. Cannondale used the same spacing for a while after the 4 bolt disappeared. What they did at that point was put a 5(?)mm, 6 bolt spacer behind the disc, on the hub effectively moving the rotor outward, into proper, modern position. Magura made these, and they are probably still around, contact Magura on that one.You can also just space the caliper in more, but you will need to be conscious of bolt length if you go that route. This all took place because Cannondale was using their own discs, the infamous Coda's (which, oddly enough, I loved, easy to service, no corrosive fluid etc) At the time, discs were new, and there was not a standard out yet, so Cannondale made their own, which was then overtaken by the rest of the world catching up, and saying, hey, we should put discs on our bikes too! There was a bunch of goofy stuff early on, perfectly functional, just a bit off from normal, modern standards. Cheers!