LeicaLad 

Gentle Wrenches,

I seek the knowledgeable regarding the Shimano 105SC hub series.

I acquired a nice NOS front hub, and the seller tossed a rear shell (and skewer) into the deal. The rear hub had been harvested of the freehub assembly. While whoever did this left a rather nasty gouge in the body from vise-grips, or some other unsuitable tool, the hub is otherwise unused. I'd like to rescue it.

My question: This is a Hyperglide compatible series. How do I know which Hyperglide freehub assembly will fit this hub? Is it restricted to specific models or types? How do I tell the difference?

Thank you.

WNG

The 105SC should be an 8-speed series freehub offering. Therefore, any of Shimano's 8/9/10 current road freehub bodies will work. IIRC, only some MT-XX mountain bike spec-ed freehubs used a different spline interface. Note: there may have been a thin shim between the hubshell and body of the SC model. A check at Shimano's technical docs site should determine this.

Sadly, I also found a NOS Shimano 600 tricolor freehub in a parts bin for $3! I was feeling stoked. Until I got home and removed the price sticker. Gouged underneath! Someone must have Vise-Gripped the hubshell.

ultraman6970

The 105SC should be an 8-speed series freehub offering <-- not right 100%.

IMO this is not correct, why? well 105sc, the one that is champagne colorish was a 7 speed hubset, Hyperglide and those hubs were 126 mm wide. No idea if they did 130 mm of those, because the sc part in the 105sc disappeared of the name at some point when they changed the thing to 8 speed I believe, and obviously you can't put an 8 speed cassette in a 7 speed 105sc hub.

If the hub the kid is talking about is this one...(picture) then he cant put an 8speed and up cassette in there, those hubs are 126 mm, the freehub body is too short. Darn shimano changed the darn hubs like 5 times if not more in the last 15 years, just idiotic.

ThermionicScott 

^^^ I was going to say, it probably takes a 7-speed HG freehub body (~$20.)

https://www.velobase.com/ViewComponen...=110&AbsPos=12

But as ultraman pointed out, Shimano liked to change things while keeping the same group number. A 7-speed 105 rear hub would have a part number of FH-1055, while 8-speed would be FH-1056.

LeicaLad 

Well, I do learn something everyday.

Yes, I did presume this to be the 126mm, 7-speed, champagne colored version. BUT, the shell is numbered 1056. The front hub is a 1055. I just presumed that was the distinction between front and back, NOT for a 130mm version.

So, even more complicated. Where does one find a 7-speed body ('cause my bikes are all either 120mm or 126mm), and will it fit on this 8-speed shell?

Photos for amusement purposes only!








And if anyone has the link to the specific technical document, that would be great. I seem to not be having luck in digging through that archive.

Thanks!

ultraman6970

You cant put an 8 speed one in there. Even if you can you have to change the axle for a longer one for 130 mm.

After this design I moved to campagnolo and left shimano behind because my senses were tingling about a hub swaps and crap each two years and did not want to deal with that, so no idea if newer models fit that hub.

Those hubs arent super expensive, if you have them money try to hunt down a hub or a wheel to transplant the piece you need.

ThermionicScott 

I betcha can.

https://www.loosescrews.com/Products/...ehub-body.html

But me being me, I'd still put on a 7-speed FH body so that I could stay 126mm and be compatible with my existing bikes. I'm 95% sure that as long as we're not involving Dura-Ace, the attachment is the same between 7- and 8-speed.

Here's one for $16 and change: https://www.amazon.com/Shimano-STX-RC.../dp/B001GSKU0U

ultraman6970

Wow, thought that store was long gone.

zukahn1 

Well yes most standard Shimano freehubs should bolt right on too that hub just fine. With a spacer or two you should be able to do either 7 or 8sp +.

ThermionicScott 

Me too! I guess they wanted to move more stuff before they retired. I want to help, but I've stocked up on most of the spares I'll need, and the inventory is pretty picked over by this point.

due ruote 

[QUOTE=ThermionicScott;16323085]

But me being me, I'd still put on a 7-speed FH body so that I could stay 126mm and be compatible with my existing bikes. /QUOTE]

I would probably go with 8 speed and muscle it in the dropouts (which isn't all that difficult to do). 8 speed cassettes seem to be in greater abundance and wider variety than 7.

WNG

Funny that you move away from Shimano to Campy, Ultraman. Since Campy made a bigger mess of backwards compatibility with their freehubs, ie. 8 speed abandoned, and 9/10 speed spline pattern changes.

The Shimano is standardized on that hubshell spline, except for the mtb specific model(s) I mentioned initially. You can swap from an old 6 speed Uniglide, to 7 to 8/9/10 HG body.
126mm to 130mm can be done with either an axle swap or use the existing axle as per Sheldon Brown.

If you have the axle and cones for your 1056 hubshell, I'd assume it's 8-speed. Go with an 8 speed body. You can still use 7 speed cassettes, just need a 4.5mm spacer.

If you measure the axle and it's for 126mm, buy the 7 speed body above, and you'll have one that'll fit your existing frames perfectly.

Here is a Shimano Tech Doc for the 5500 series freehub. Note the compatibility listing for the 1056-8 freehub.
Pic shows a washer. I think your photo of the hubshell shows it's there.

https://techdocs.shimano.com/media/te...9830612177.pdf

QuangVuong

It is possible to run the shorter axles that were made for the 126mm hubs in a 130mm hub. You just have shorter axle ends sticking out from the locknuts. I have a 6400 rear hub that had a 7s uniglide body on it. I replaced that with an RS80 8/9/10s HG freehub, and reused the seals and cones as well as the axle. All I needed to do was redish the wheel over a bit, but it allows for 8/9/10s with 126mm spacing. I only did this because it was a carbon frame. If it were a steel frame, Id just pull it out to 130mm.

LeicaLad 

Gentlemen and Scholars All,

I appreciate the generosity of knowledge. As I put the pieces together, what I have is a 1056 shell. What I really want is a 1055 hub. Meaning, I need both the 126mm axle w/cones & lock nuts And the 1055 freehub body.

I really appreciate the technical document, as I had no idea that the 1055 and 1056-8 were actually 5500 hubs. How would one figure that out? The second photo in the Velobase entry suggests 4 different part numbers. None of these are found with the search function in the Shimano technical docs Search function.

While I grinned at being referred to as the “kid”, I’m more like Rip van Winkle. I lived abroad many years, had a couple bikes, and missed entirely all the changes that brought freehubs, cassettes and index shifting. A lot of other stuff, too.

That technical document, however, shows that the 1056-8 series can share a freehub body, but it doesn’t seem to include the 1055, at all, which I now (thanks again to you gents) understand is the 126mm version. According to the third photo on Velobase, it was meant for either 6- or 7-speed clusters. I have no interest in any hubs of the 130mm persuasion – unless they can be downsized to 126mm.

So, would that body actually fit for use on a 126-spaced setup? Unclear.

Moreover, I do not have the axle, or the cones & lock nuts, for this shell. This may be a bigger issue than which freehub body.

Perhaps, otoh, it might be advisable that I should just abandon the notion of rescuing this shell . . . There may be ocd issues here.

Or it just goes back into the parts box until a suitable donor appears in front of me.

Both my '59 and '63 frames were built for a 118mm 4-speed wheel. Spreading them to 126 was pretty traumatic. They ain't going any wider.

But that's just me.

Thank you all, again.

ThermionicScott 

Don't abandon it -- it's nice and pretty.

If you're building it into 126mm spacing, you'd want a 10mm x 1 axle that's 137mm long, and it looks like 1055 and 1056 rear hubs take the same cones. You can get all that stuff here: https://wheelsmfg.com/products/all-cones.html

If that STX-RC 7-speed freehub body doesn't fit, I'll buy it off your hands after eating my hat.

LeicaLad 

That's why I love this forum. That's great.

I didn't know about that source. Great.

At an appropriate point, I'll report back.

Thanks, yet again, guys!

Owen