Mike wrote:
I have a sort of mystery Campy rear track hub that is looking for an explanation.
It is a large flange "no-record" early track type hub but it has no stepped-down reverse threaded provision for a lockring. Weird. At first I thought perhaps someone might have stripped the lockring thread and had it removed by a machinist. But the rounded profile of the hub shell makes me question that. There doesn't seem like there was any stepped-down section at all to begin with. The flange spacing definitely is wider than that of a regular road hub. I have some photos posted on the Wool Jersey Gallery :
http://www.wooljersey.com/
I too have had one of those hubs. Like John Barron, mine was from the late 50's and was fitted to a city bike. It was on a single freewheel bike. To see if this is the case on your bike, you should measure the distance from the end of the freewheel threading (at the shoulder) to the outside of the axle locknut. My guess is that the distance is much less than what you would need to run a standard 5-block freewheel. I doubt that you would normally see such a hub outside of Italy, but within Italy they don't seem to be overly unusual.
Steven Maasland
Moorestown, NJ
USA