Bici Veloce

I have a 1985 Bianchi Limited with a Shimano NEW 600EX groupset. It has friction shifters and a New 600EX 6-speed freehub, Shimano part #FH-6207-6. My freehub body has a cracked dustcover and my cassette skips on a couple cogs. I member is offering up for sale a Uniglide 600 Hubset, which includes a 7-speed cassette and freehub body (6400 series?). Seeing a good opportunity to upgrade to 7-speed while addressing the defective dustcover, I'm considering purchasing the set. Photos are included in the linked thread.

Would this 7-sp freehub body and cassette be a direct replacement for my 6-sp set? I searched Sheldon Brown's website and can't find a definitive answer.

Kontact 

It should work just fine. However, chances are most standard hyperglide bodies will also work and then you won't ever have trouble replacing the cassette, since Uniglide cassettes are no longer made.. DA being the exception because it is not compatible with anything else.

To illustrate, I swapped the uniglide freehub body off an Ultegra hub for a hyperglide freehub body from a cheap Shimano MTB wheel made 15 years later. There was a difference in the dust shields, but not one that affectted function. I'm sure if I had used something like 400ex or RX100 it would have the same seal system because they're all road hubs. I also subbed an Ultegra 8 hyperglide body onto an Ultegra 7 uniglide hub.

Bici Veloce

Thanks for the response. I read about the HG swap on Sheldon's site, but I only ride this back once or twice a month. I'm hoping I can get a few years out of the 7-speed swap. If it doesn't work, a HG swap will still be an option.

Miele Man

Regarding the cogs that the chain skips on. A GREAT thing about Uniglide cogs (except the smallest threaded one) is that they can be flipped to extend their life. Take off the cogs but remember which ones are causing the chain to skip. Reverse those cogs and reinstall all the cogs. You should be good to go as far as chain skip is concerned.

Cheers

Bici Veloce

Yes, I did that a couple months ago, but have not yet given it a good test run. I'm hoping it will eliminate the chain skip.

Thank you!