I’m totally new to changing cranksets. I currently have FSA Gossamer crankset (10 speed) with ultegra 6700 components (FD and RD). Do I have to get the matching FD if I get the Dura Ace 9000? Or even sram reds? Are 6700 cranksets the only option without changing FD? What about RD?
You can run DA9000 cranks with Ultegra 6800 everything else. You can not run them with Ultegra 6700…
Shouldn’t be a problem. Have had 105 & Ultegra cassettes with FSA cranks and Dura-ace DR for a while now.
I’m getting conflicting answer here. With my budget, I might just go with the 6800 crankset. Will 6800 cranksets work with 6700 components?
No because the 6800 crank is 11 speed and the 6700 is 10 speed. You might be able to make it kind of work, but why wouldn’t you just run the 6700 crank with 6700 group.
I’ve read in other forums that 10 speed and 11 speed are interchangeable, no? Wiggle doesn’t have the 6700 in my gear/crank length. The price difference between 6800 and 6700 is minimal. Might as well try out the 4 arm system if possible.
the spacing between the big and small ring has apparently changed from 10 to 11spd. but my guess is that people have gotten it to work fine. is it road or TT shifters?
TT shifters. If it doesn’t fit, do I need to get matching FD only? Or do I have to get matching RD too?
No because the 6800 crank is 11 speed and the 6700 is 10 speed. You might be able to make it kind of work, but why wouldn’t you just run the 6700 crank with 6700 group.
Don’t believe this is correct. The OP may need to run an 11 spd chain, but it should work fine.
If you have a quick link like on a SRAM chain or Wipperman, I’d probably test it with a 10 spd chain for gins and giggles before dropping the $$ on an 11 spd chain.
You can run a 6800 or 9000 crankset just fine on 6700 groupset without swapping any other parts. Don’t switch to an 11spd chain as it is narrower and won’t work well with a 10spd cassette. Just keep what you have and swap the crankset it will work great.
This is working just fine for me. I’m currently running an Ultegra 6800 crank with an otherwise 6770 equipped road bike. I’m also running the DA9000 crank with with 10sp SRAM Red on my Shiv. Both bikes are using Ultegra 6700 chains. I have used the DA9000 with the 6770. No problems and more importantly, no “special” adjustments made. I ended up with this set up so that I could swap my DA9000 Stages between these two bikes.
Also, ultegra 6700 with Sram Red crankset will be okay too?
Yes it will work fine.
You can run DA9000 cranks with Ultegra 6800 everything else. You can not run them with Ultegra 6700…
Wrong! They work fine with 10-speed drivetrains (SRAM or Shimano).
Also, ultegra 6700 with Sram Red crankset will be okay too?
Yep!
Thanks to a ST member (GMAN), I just bought the DA9000. Fingers crossed that it works!
One more question! I have megaexo bb. Do I have to get a da9000 specific bb?
The crank will absolutely work.
Yeah, get a new bottom bracket. They’re cheap anyway. I think I saw one for 35 bucks on competitive cyclist.
It will work perfectly fine
I have been running DA 9000 crank on my DA 7900 drivertrain. Just MAKE SURE you use a 10spd chain. the 11spd chain is thinner and wont work well if at all with the 10spd cassette.
You will need to tweak the FD but it will work totally fine.
No because the 6800 crank is 11 speed and the 6700 is 10 speed. You might be able to make it kind of work, but why wouldn’t you just run the 6700 crank with 6700 group.
Don’t believe this is correct. The OP may need to run an 11 spd chain, but it should work fine.
If you have a quick link like on a SRAM chain or Wipperman, I’d probably test it with a 10 spd chain for gins and giggles before dropping the $$ on an 11 spd chain.
I can confirm that a 6800 crank works just fine with 10 speed stuff, including a 10 spd chain. Just out one on my Shiv TT w/ a new SRAM 10 spd chain.
Rode it yesterday and it worked just fine.
Side note - this was w/ bar end shifters. Getting it to work properly with STI could be a bit more challenging, I suppose.