[DIRTWRKS]

Hi,

Can anyone tell me if road style cassettes such as Durace and ultegra will fit on xt style hubs commonly found on mountain bikes. Are they all interchangeable?

Regards,

 

[axlvid23]

Originally posted by DIRTWRKS
Hi,

Can anyone tell me if road style cassettes such as Durace and ultegra will fit on xt style hubs commonly found on mountain bikes. Are they all interchangeable?

Regards,

yep, just as long as the freehub is made for the amount of gears the cassette has....9 spd freehub w/ 9spd derr, and so forth

 

[Toshi]

i run a sram road cassette on my xt hub. go for it.

 

[Sir_Crackien]

all of the road drivetrain stuff is campatable will the mtn sfuff. but if you run a road rear der you need a road cass. and a single front chainring.

 

[Repack]

yep, just as long as the freehub is made for the amount of gears the cassette has....9 spd freehub w/ 9spd derr, and so forth

Derr has no bearing. The only dif between 8 and 9s derr's is that the 9s has larger jockey wheels to work with a wider spread of gears.
More importantly, ALL non-Campy, non-Mavic rear hubs and cassettes are fully compatible between 8 and 9s. The spacing and gears on a 9s are slimmer than 8s to fit on the same body.

Example: You could have: An old 8s LX hub (the old black one), SRAM 9s road cassette, 8s XT derr and Saint 9s shifter and it would work fine.

 

[DßR]

Originally posted by Sir_Crackien
but if you run a road rear der you need a road cass. and a single front chainring.

No you don't. Not even by a long shot.


I have a 105 SHORTCAGE rear derailleur on my RFX, an 11-34 cassette, and a 22-32-44 front ring setup.

The only things I can't do are big-big, and some of the smallest cogs when I'm in the 22t ring.

Roadie derailluers work great with all mountain cassettes (although they rub a bit on 34t cogs) and will work fine with ANY 2-ring setup and some 3-ring setups.

 

[PsychO!1]

Originally posted by DßR
No you don't. Not even by a long shot.


I have a 105 SHORTCAGE rear derailleur on my RFX, an 11-34 cassette, and a 22-32-44 front ring setup.

The only things I can't do are big-big, and some of the smallest cogs when I'm in the 22t ring.

Roadie derailluers work great with all mountain cassettes (although they rub a bit on 34t cogs) and will work fine with ANY 2-ring setup and some 3-ring setups.

You don't have to run road cassette with a road der......but, you do have to run the correct gearing to work with the short cages of road der.

Too big of a rear cog and the pulley's will rub, Generally you can run up to a 28 tooth. You can run bigger, but may run into shifting issues with that cog.

Plus...the short cage won't take up enough chain slack to run a full triple set. You can make it work...but your chain will either be too long to run some combos, and too short to run others.

If you understand the shortcomings and can live with them...then it works just fine.

 

[DßR]

Originally posted by PsychO!1
You don't have to run road cassette with a road der......but, you do have to run the correct gearing to work with the short cages of road der.

Too big of a rear cog and the pulley's will rub, Generally you can run up to a 28 tooth. You can run bigger, but may run into shifting issues with that cog.

Plus...the short cage won't take up enough chain slack to run a full triple set. You can make it work...but your chain will either be too long to run some combos, and too short to run others.

If you understand the shortcomings and can live with them...then it works just fine.

I understand all that (I know all about difference/capacity/maxcog), but my point is that even though the "max cog" on a 105 is "27t", that's simply not the case in practice - you can run larger cogs just fine without rubbing, and MUCH larger cogs if you're willing to put up with a little rubbing. No shifting issues whatsoever on my bike, no matter what cog size. What Shimano says are the "limits" are not actually applicable IRL.

Like I said, I'm using it on a triple (busted my der. at a race last weekend and needed a stop-gap) and I can't use the extreme cross-gears, but the only people who use big-big and small-small are newbies or choads anyway.