timo888 

Did Shimano ever make a 7-speed hub in 24H? Any other manufacturer?

70sSanO

If it existed it would have to be Dura Ace 7400. I can't find any documentation for 24 hole 74XX hubs, only 32/36.

I found Campagnolo made threaded (freewheel) 24 hole hubs. You can probably spend a couple hundred on those and save 50 grams in spoke weight.

Dura Ace offered a 24 hole in the 7700 series. And if you "really" what a Shimano 24 hole 7 speed cassette freehub, you can look for a Y32A98010 freehub body (others may work I don't know) and swap out the 7700 freehub body. I got mine off a FH-M732 freehub ( it might be wise to get a complete hub and use the DS cone). Then you can have one of the few Shimano 7 speed 24 hole freehubs that accepts a hyperglide cassette and even lets you run a threaded uniglide 1st position cog if you want. And it all fits into a nice 126mm OLD. Now that's stylin'.

John

Edit Added: I'm looking for the source for a Shimano Freehub Interchangeability table, I have a .pdf. I think it was from the "old" Shimano tech docs site, that they probably deemed provided too much info that might prevent a sale of a new Shimano prooduct.

FastJake

I have a set of 600-Ultegra 6400 (tri-color) hubs in 24/28 hole. It stands to reason they made a 24h rear, maybe even in 7-speed, but I've never personally seen one.

Shimano made a variety of 24h rear hubs in 8/9/10 speed. I have some that are 105, Ultegra, Dura Ace, and removed from an RS-10 (?) wheelset. If you have a complete 7-speed hub it's pretty easy to swap the freehub body and right side cone/locknut stuff onto a different hub shell. I've gone back and forth a number of times for various reasons.

rccardr 

That’s what I’d be looking for. Tricolor is well made and lasts forever.
Currently have both anUG only and HG/UG combo 7 speed freehub for sale if you are looking. Should slide riht into a tricolor hub, even have the correct mounting bolt and washer.

70sSanO

There are people who have so so so much more experience swapping out freehub bodies than I have. The little experience I have with 7 speed UG/HG is that there is a depth issue with some of them. This started when I wanted to put at XT-732 body on a DX-650 hub. It wouldn't seat all the way and left a gap between the FH body and the freehub. And the 1055FH uses the same as the MTB DX-650. The 732 on my 7700 just happened to fit by accident; which was good with a 126mm OLD Cannondale.

I think a 6400 hubset would definitely be a better option, especially since 7700's have gotten really expensive. If you can get someone to verify what will fit, it might save you a few bucks and a few extra parts in the bin. The tough part is getting that darn FH body off an unlaced hub.

John

ericoseveins

Hopefully not a dumb question, but is there a reason not to just lace a 36 hole hub to the rim? Maybe an aesthetic issue or period-correctness issue?

timo888 

I was mainly curious to know whether they existed. I've seen a 36H hub laced to 24H wheels, but that approach seems just a bit out of tune with the music of the heavenly spheres :-)

timo888 

Thanks for the tips. I have zero experience swapping FH bodies.

timo888 

I may take you up on that. I'll see what I can find. Does swapping a FH body affect dishing/wheel centering?

rccardr 

Depends on how you have to swap around spacers to get the OLD you need. Worth checking afterward, regardless.