Originally Posted by
KCT1986
Not sure why you are mentioning 7 speed since as already pointed out, the OP is working with an 8 speed UG/HG freehub body.
But, since you mentioned 7 speed freehub and 8/9/10, see the attached, beginning on post #52 about being able to put a
certain 10 speed cassette on a 7sp body.
10-speeds on a 126mm hub SUCCESS - Page 3 - Bike Forums
In regards to your comment of the DA UG/HG backward compatible body, it is 8 speed length and similar to the what the OP has as far as cassette fitment. It would take 8/9/10 HG cassettes, or any UG sprockets (except for the DA outermost threaded sprockets that had the reduced diameter). The first 8 speed DA freehub was UG only, but with the smaller outermost threads, and the only 8 speed 'UG' freehub it appears.
by way of explaining my remaining question.... i was involved with several other wheeled sports during the Uniglide age.... i'm trying to get caught up on it's ins and outs.
"But today I put a 9speed 11-24t cassette on a FH6402 hub:"
"I don’t recall a Shimano 600 UG 8 speed cassette, but they may have offered one."
"Don't recall any 8 speed UG cassettes for the Ultegra group, standard component for the group used a HG90-8 when the group went to 8 speed. MTB probably also was on HG when the groups went to 8 speed."
i'll assume that the 600 hub was updated to the DA Freehub at some point in it's life?.... as should IcemilkCoffee?
and, personally, being a big fan of 600 series components, this info is much appreciated!
