I tried unsuccessfully to replace a SRAM X7 2x10 front derailleur (top clamp) with a SRAM X0. I had read about top/bottom pull and clamp/direct mount, but I ran into another incompatibility. The X7 has a fitting for the outer cable (i.e. housing) of the shift cable to sit in, while the X0 does not -- I assume that the frame needs to have a braze-on to hold the shift cable housing in place while the wire bolts to the derailleur.
I'm having trouble finding compatible derailleurs because I don't see this feature listed in specifications, and it's kind of hard to tell by looking at pictures. Can anyone help me out by at least telling me what to call this difference?
If you're new please join in and if you have questions pop them below and the forum regulars will answer as best we can.