Originally Posted by geo8rge
What kind of Campy hub is it? Is the hub a threaded freewheel type or a later cassette type. Almost all Campy cassette hubs were 130mm. The threaded hubs ranged from 120mm - 126mm. There were aftermarket axles for a freewheel hub that allowed an 8 sp freewheel to fit and were spaced for a 130mm dropout. They flexed real bad because there was no support. It is generally accepted that a 130mm axle in a freewheel type hub is a bad idea.
As I asked earlier, if you explain what you are trying to accomplish there is someone here that can give a better answer. It sounds like you are trying to swap an internally geared hub with a freewheel type from another manufacturer. Campy never made internally geared hubs. Watever it is your doing, it's obvious you don't want to spill the beans. Good luck
Tim