Why aren't the modified 11spd (for 10spd hub) cassette more common?

[BRad704]

I'm seeing new-buy options around $150-200. That seems VERY reasonable to be able to use my 10spd Zipp wheels on my newer bikes.

Why don't we see more of these "mods" or "conversions"?

[8aaron8]

I'm surprised by this as well, though I do think the cost is rather high for the modified cassettes. Lucky for myself, I have a lathe so all my nice 10spd wheels now serve 11spd duty.

[BRad704]

Originally Posted by 8aaron8

I'm surprised by this as well, though I do think the cost is rather high for the modified cassettes. Lucky for myself, I have a lathe so all my nice 10spd wheels now serve 11spd duty.

Lucky!

I've got a wood lathe, but I don't know if I want to go for it without some better tolerances of a metal lathe.

[Mark McM]

Originally Posted by BRad704

I'm seeing new-buy options around $150-200. That seems VERY reasonable to be able to use my 10spd Zipp wheels on my newer bikes.

Why don't we see more of these "mods" or "conversions"?

I'd be surprised that if there aren't some compatibility issue with these cassettes in certain sizes. Shimano 10spd (and compatible) hubs have a larger flange offset than 11spd hubs. This creates less wheel dish for more reliable wheels, but it also means that there is potential overlap between the derailleur and the driveside spokes. The spokes are angled from the hub to the rim, so the larger the rear sprocket, the more the spoke/derailleur clearance there is, so 11spd cassettes with large sprockets may work on 10spd wheels. But smaller 11spd cassettes may not work.

[Powerful Pete]

Couldn't resist to be that guy... not an issue on my Campagnolo wheelsets.

But yes, seems like a strange fact that no one would figure this out.

[BRad704]

Originally Posted by Mark McM

I'd be surprised that if there aren't some compatibility issue with these cassettes in certain sizes. Shimano 10spd (and compatible) hubs have a larger flange offset than 11spd hubs. This creates less wheel dish for more reliable wheels, but it also means that there is potential overlap between the derailleur and the driveside spokes. The spokes are angled from the hub to the rim, so the larger the rear sprocket, the more the spoke/derailleur clearance there is, so 11spd cassettes with large sprockets may work on 10spd wheels. But smaller 11spd cassettes may not work.

Very fair point. I'd be looking to do this on 11-28 or 11-30, since my road/cx bikes are all medium cage now.

[BRad704]

Originally Posted by Powerful Pete

Couldn't resist to be that guy... not an issue on my Campagnolo wheelsets.

But yes, seems like a strange fact that no one would figure this out.

What's odd to me is that they HAVE figured it out.

[Mark McM]

Originally Posted by Powerful Pete

Couldn't resist to be that guy... not an issue on my Campagnolo wheelsets.

But yes, seems like a strange fact that no one would figure this out.

It's not an issue with Campagnolo wheels because Campagnolo has already had less driveside flange offset (more dishing) than Shimano wheels, going back to the 8spd era. So Campagnolo wheels have already had enough space to fit wider cassettes. Shimano wheels have had a wider driveside flange offset (less dishing), which left less room for the cassette. After going from 8spd to 9spd to 10spd, there was no more room to add an additional sprocket, so Shimano had to re-design their hubs to push the flange inboard, to make space for that 11th sprocket.

[johnniecakes]

I have 3 6800 (12-25) series cassettes that were modified to fit onto 10 speed free hubs. They work flawlessly and each modification was $15.00 at a small local machine shop. Takes only a few minutes.

[FriarQuade]

Because it makes more sense to modify the freehub?

[zzy]

Yeah where are all these machine shops that modify 10sp freehubs and cassettes?

[Tony]

The two freehubs I modified was fairly easy to do with a file, don't need a machine shop.

[jc031699]

Here’s one

Psa machining 11s cassettes to fit 10s hub
https://r.tapatalk.com/shareLink?sha...2&share_type=t


Sent from my iPhone using Tapatalk

[fogrider]

why not just change out the freehub? cassettes are consumables and wear out.

https://www.modernbike.com/product-2...QaAif1EALw_wcB

[R3awak3n]

Originally Posted by fogrider

why not just change out the freehub? cassettes are consumables and wear out.

https://www.modernbike.com/product-2...QaAif1EALw_wcB

Only works with a few manufacturers. Chris king for example does not sell a 10 to 11sp conversion freehub.


At least shimano has the 11-34 cassette that fits 10 and 11. I dont have any 10 speed hubs but have a few of those cassettes on rotation and they are excellent and not very expensive.