Dura Ace 7400 series hub question

[rwsaunders]

I'm getting ready to list a set of Dura Ace/Open Pro wheels and I can't tell if the rear hub is a 7402 or 7403. Any secrets without pulling the cassette?

Thanks

[oliver1850]

According to VeloBase, 7402 hubs were labeled "Integrated 8 SIS" in the center of the shell, were Hyperglide compatible, but still had the threads on the outside of the FH body so Uniglide cogs could be used.

Here's the 1993 catalog, which shows the 7403:

http://www.tearsforgears.com/2009/10/1993-shimano-catalog.html


I can't tell what changed from the 7402, but it looks like it mentions lubrication ports. Perhaps someone with better eyes than I can decipher the description.

[oliver1850]

Perhaps VeloBase is wrong about the 7402. This post:

http://www.bikeforums.net/archive/index.php/t-626072.html

says that 7402 was Uniglide only. That would make your hub a 7403.

[rwsaunders]

Much obliged Oliver! I found some photos of the 7403's on the web as well thanks to your links. Now I just need to get some better photos of the wheels so that I can post in the classified.