I've got this 1960s Sturmey-Archer AW hub that I've got a sentimental attachment to, and I'd like to put it on a modern frame and in a modern wheel. The axle seems too short, though. Can I get a different axle? Do I have to open up the hub to do so? If I open up the hub, will all the magic leak out?
This brings up an ancillary question, actually: how many axle sizes are there?