Gone, but not forgotten
Join Date: Jul 2002
Location: Newtonville, Massachusetts
Bikes: See: http://sheldonbrown.org/bicycles
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Originally Posted by rat_factory
i'm not sure if dura-ace is an exception to this, but the outer threads on the cassette body are for the 'locking' outer cog. the cassette you are looking at wasn't designed for your DA hub. my guess if you don't want to search for for NOS stuff you can easily change out the cassette body with a new HG body by inserting a 10mm hex key straight down the middle and unscrewing it. This would let you get a modern 7sp cassette body, leave better upgrade options for the future when the cassette wears out, and lets you more easily upgrade. HG shifts miles better that UG anyway. oh and i have that exact UG cassette on my commuter.
an exception. Before the move to 9-speed in 1997, there were a number of interchangeability issues with Dura-Ace hubs, derailers and shifters.
I have a detailed article on this at http://sheldonbrown.com/dura-ace
The Dura-Ace Uniglide threaded (top) sprocket is a different thread from other Uniglides (smaller to permit use of an 11 tooth sprocket.)
The Dura-Ace Freehub body does not attach with a separate bolt, and doesn't use a 10 mm Allen wrench. The body has a built-on male thread, and requires a special splined tool. (We will lend you the tool if you buy a replacement body from us.)
There was never a 7-speed Hyperglide body for Dura-Ace, but we have the 8-speed Hyperglide body (which also works for 9- and 10-speed cassettes) but it means going to 130 mm spacing.
You are not the first to discover that a "bargain" old Dura-Ace item is not such a "bargain" after all.
Sheldon "May Not Be Worth It" Brown