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November 22, 2005

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RogueMechanic

Dan- Yep, should work just fine! Enjoy! -John

Dan

I'm going to leave the world of triples and go to this crankset. I'm replacing a 105 triple (5600) with the R700. Do you know if I can reuse my Shimano 105 bottom bracket?

RogueMechanic

Hello Eric,
The 10 speed chainrings will work just fine with your 9 speed Dura Ace set up. Hope that this helps. Thanks for writing! -John

Eric Redrup

I currently have a Shimano 9 speed Dura Ace set up and would like to upgrade to the Dura Ace 10 speed crankset. Will my 9 speed chainrings 53/39 work on the 10 speed crankset or are the 10 speed chainrings compatible with 9 speed chain?

STAMO

The R700 is 50/34. That makes for a 16 tooth gap. The web advises that 10spd Dura ace and Ultegra Rear derailers are only good for 14 tooth front chain ring variances, which is what you usually get with a normal 53/39. So am i to believe that if you run a compact 50/34 , it means I must run a particular rear derailer specific for compact front chainrings. ???

Jono

Hi,

Just wondered if these could work on a bike with only an 8 speed shimano?

Steve

Regarding the R700 compact crank. I want to get rid of my triple and I have Ultegra STI triple shifters. do I need to replace the shifters as well?? I know I need to put a double front derailler(I can never spell that), but the shifters? Pretty expensive.

RogueMechanic

Good points MarvinK. I agree with you that Shimano should just come out with Dura Ace, Ultegra, and 105 versions and be done with it. Thanks for writing. -John

MarvinK

I wish they didnt put that big ugly Shimano logo on it that makes it look like it might be RX100-class or something. In addition to looking too generic, it also is heavier than Ultegra (only 20g)... so I'm not sure who would argue its ABOVE Ultegra quality.

Shimano is supposed to release a 9spd-specific and a lower-quality 10spd compact later this year. Frankly, I think they need a Dura Ace, Ultegra and 105 version... and skip the generics.

RogueMechanic

Hello ts,
Officially, Shimano says that it's only compatible with a 10 speed chain. That's not completely true. It will work just fine with 9 speed....I'd recommend a Shimano 9 speed chain in this case because it's more narrow than a SRAM and would be less likely to rub the outter ring when in the 34x12. I hope that this info helps. Thanks for writing! -John

ts

can you use the r700 with ultegra 9 or does it have to be 10?

uber

yea, i heard that that badboy is supposed to be between dura-ace and ultegra. i am very interested because i have been considering a switch to compact (i have NEVER run out of top gear) and i you're right, shimano knows their sh!t with chainrings!

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