9000 Dura Ace or 8000 Ultegra?

part_robot wrote:

8000 Ultegra if you're willing to wait. Main reason: 1/ that front mech 2/ wider range rear mech (the R9000 takes a max 28 cassette officially whereas the R8000 takes 34). If the front mech's anything like the R9100 one it'll be bloody brilliant (I have one). If you're not willing to wait, get 9000 and upgrade the front and rear mech when the 8000 comes along.

DA 9000 rear mech does 30T no problems and some are using it with a 32T even on the big ring

BehindTheBikesheds wrote:

part_robot wrote:

8000 Ultegra if you're willing to wait. Main reason: 1/ that front mech 2/ wider range rear mech (the R9000 takes a max 28 cassette officially whereas the R8000 takes 34). If the front mech's anything like the R9100 one it'll be bloody brilliant (I have one). If you're not willing to wait, get 9000 and upgrade the front and rear mech when the 8000 comes along.

DA 9000 rear mech does 30T no problems and some are using it with a 32T even on the big ring

True. And I have my R9100 on 32T. Didn't want to recommend it though

part_robot wrote:

BehindTheBikesheds wrote:

part_robot wrote:

8000 Ultegra if you're willing to wait. Main reason: 1/ that front mech 2/ wider range rear mech (the R9000 takes a max 28 cassette officially whereas the R8000 takes 34). If the front mech's anything like the R9100 one it'll be bloody brilliant (I have one). If you're not willing to wait, get 9000 and upgrade the front and rear mech when the 8000 comes along.

DA 9000 rear mech does 30T no problems and some are using it with a 32T even on the big ring

 

True. And I have my R9100 on 32T. Didn't want to recommend it though

Ah but the 9100 rear mech is an absolute dogs dinner, it's the fucking ugliest rear mech since some of the 80s weird shit, no actually, it doesn't come close, it's hideous beyond imagination.

I don't mind the look of the cranks, I stuck with my FSA K-Force light's instead of getting a 9000, 9100 overall is a bit meh, mechanically I know it's fab but honestly that rear mech I just can't get over how much of a munter it is! I'd rather slap the 33T ring on (I'm usually a 52 or 50 + 36 guy for my terrain) and stick with the 28 or 30 than lower myself to such ugliness.

The older 6700 SS RD was designed for 30T and would do 32T easily, can't understand why Shimano took a backward step with the 6800/9000 stated capacity

BehindTheBikesheds wrote:

Ah but the 9100 rear mech is an absolute dogs dinner, it's the fucking ugliest rear mech since some of the 80s weird shit, no actually, it doesn't come close, it's hideous beyond imagination.

I don't mind the look of the cranks, I stuck with my FSA K-Force light's instead of getting a 9000, 9100 overall is a bit meh, mechanically I know it's fab but honestly that rear mech I just can't get over how much of a munter it is! I'd rather slap the 33T ring on (I'm usually a 52 or 50 + 36 guy for my terrain) and stick with the 28 or 30 than lower myself to such ugliness.

The older 6700 SS RD was designed for 30T and would do 32T easily, can't understand why Shimano took a backward step with the 6800/9000 stated capacity

Personally I really like them - much sleeker, tucked away, much more like the MTB mechs (which is unsurprising..) - especially the top, cage is a bit whatever. The old 6700 mechs were OK, in all black, apart from that God awful barrel adjuster and cable guide that looked like they'd forgotten about it and had the intern CAD guy hack it on at the last moment - hideous. That whole black and silver thing too - jeezus wept that looked cheap and not particular cheerful.

 All IMO of course.

I do prefer the new Ultegra RX mechs to both of them though

(Oh, looking at the old Shimano tech docs it looks like the 6700 SS RD had a stated capacity of 33, max 28T, min 11T and 16T front chainring difference - same as the 6800 and 9000 SS RDs - so they've not really changed the public specs and they still keep on shifting bigger cogs and larger gaps just like they always did. No dramas, they're just being safe, but no idea why they don't acknowledge it more either.)

BehindTheBikesheds wrote:

part_robot wrote:

8000 Ultegra if you're willing to wait. Main reason: 1/ that front mech 2/ wider range rear mech (the R9000 takes a max 28 cassette officially whereas the R8000 takes 34). If the front mech's anything like the R9100 one it'll be bloody brilliant (I have one). If you're not willing to wait, get 9000 and upgrade the front and rear mech when the 8000 comes along.

DA 9000 rear mech does 30T no problems and some are using it with a 32T even on the big ring

Bruh, anyone running a 32t in the big ring is pedaling downhill. Even with a 52 tooth big ring, that derailleur is under full tension as too as the shif is made. It won't take much torque to rip that thing right off. A 30 in the big ring is pushing it. I would pedal too hard. 

I have set these up over 100 times, I live in Southern California and it's very hilly here. Overweight middleaged men love to purchase 14ln bikes for $10-15,000 and then ask you to throw the largest cassette possible on there. 30 is the largest I set them up or we have to swap for an XTR derailleur.

You can run a 32 but when you are in the big ring, you need to make sure you practice staying at the 28t cog or lower. It takes some bicycle i.q. and awareness to not screw that up. 

bobobnj wrote:

BehindTheBikesheds wrote:

part_robot wrote:

8000 Ultegra if you're willing to wait. Main reason: 1/ that front mech 2/ wider range rear mech (the R9000 takes a max 28 cassette officially whereas the R8000 takes 34). If the front mech's anything like the R9100 one it'll be bloody brilliant (I have one). If you're not willing to wait, get 9000 and upgrade the front and rear mech when the 8000 comes along.

DA 9000 rear mech does 30T no problems and some are using it with a 32T even on the big ring

 

Bruh, anyone running a 32t in the big ring is pedaling downhill. Even with a 52 tooth big ring, that derailleur is under full tension as too as the shif is made. It won't take much torque to rip that thing right off. A 30 in the big ring is pushing it. I would pedal too hard. 

I have set these up over 100 times, I live in Southern California and it's very hilly here. Overweight middleaged men love to purchase 14ln bikes for $10-15,000 and then ask you to throw the largest cassette possible on there. 30 is the largest I set them up or we have to swap for an XTR derailleur.

You can run a 32 but when you are in the big ring, you need to make sure you practice staying at the 28t cog or lower. It takes some bicycle i.q. and awareness to not screw that up. 

 Well maybe you're new to cycling buddy but some of us have been around and going beyond the stated limits of cycling components for best part of 30 years, don't start throwing weight around calling into question people's IQs suggesting what is possible and what actually works. How many mechs you seen ripped off going big big on a short cage?

I don't care what other people do but I'm just saying what is possible and for the purpose of getting a lower gear the DA9000 and indeed 6800 short cage it's possible to use a 32T sprocket with a small inner c'ring and it not foul or be ripped off even under duress.

Maybe you're not setting things up right/just being ultra conservative, that's up to you but just because it doesn't work for you doesn't mean you have to start insulting people!

BehindTheBikesheds wrote:

part_robot wrote:

8000 Ultegra if you're willing to wait. Main reason: 1/ that front mech 2/ wider range rear mech (the R9000 takes a max 28 cassette officially whereas the R8000 takes 34). If the front mech's anything like the R9100 one it'll be bloody brilliant (I have one). If you're not willing to wait, get 9000 and upgrade the front and rear mech when the 8000 comes along.

DA 9000 rear mech does 30T no problems and some are using it with a 32T even on the big ring

Bruh, anyone running a 32t in the big ring is pedaling downhill. Even with a 52 tooth big ring, that derailleur is under full tension as too as the shif is made. It won't take much torque to rip that thing right off. A 30 in the big ring is pushing it. I would pedal too hard. 

I have set these up over 100 times, I live in Southern California and it's very hilly here. Overweight middleaged men love to purchase 14ln bikes for $10-15,000 and then ask you to throw the largest cassette possible on there. 30 is the largest I set them up or we have to swap for an XTR derailleur.

You can run a 32 but when you are in the big ring, you need to make sure you practice staying at the 28t cog or lower. It takes some bicycle i.q. and awareness to not screw that up. 

BehindTheBikesheds wrote:

part_robot wrote:

8000 Ultegra if you're willing to wait. Main reason: 1/ that front mech 2/ wider range rear mech (the R9000 takes a max 28 cassette officially whereas the R8000 takes 34). If the front mech's anything like the R9100 one it'll be bloody brilliant (I have one). If you're not willing to wait, get 9000 and upgrade the front and rear mech when the 8000 comes along.

DA 9000 rear mech does 30T no problems and some are using it with a 32T even on the big ring

Bruh, anyone running a 32t in the big ring is pedaling downhill. Even with a 52 tooth big ring, that derailleur is under full tension as too as the shif is made. It won't take much torque to rip that thing right off. A 30 in the big ring is pushing it. I would pedal too hard. 

I have set these up over 100 times, I live in Southern California and it's very hilly here. Overweight middleaged men love to purchase 14ln bikes for $10-15,000 and then ask you to throw the largest cassette possible on there. 30 is the largest I set them up or we have to swap for an XTR derailleur.

You can run a 32 but when you are in the big ring, you need to make sure you practice staying at the 28t cog or lower. It takes some bicycle i.q. and awareness to not screw that up. 

bobobnj wrote:

 

Bruh, anyone running a 32t in the big ring is pedaling downhill. Even with a 52 tooth big ring, that derailleur is under full tension as too as the shif is made. It won't take much torque to rip that thing right off. A 30 in the big ring is pushing it. I would pedal too hard. 

I'm struggling to get my head round this. 32x52 is about a 43" gear. If you're pedalling that downhill then top marks for souplesse. You're not going to get much torque in though.