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Old 12-24-10, 10:00 PM   #1
Quiz Man
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Sram Red w/ Dura Ace Crankset?

I want to replace my 9 speed ultegra components (derailures, shifters, cassette and brakes) with Sram Red. I have a 10 speed Dura Ace Crank on the bike that I want to keep. Will I have any compatabilty issues? Which chain would be best, Sram or Dura Ace?

Thanks
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Old 12-24-10, 11:43 PM   #2
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I wil make a quick prediction, sram red will probably work out better than the ultegra 9 speed pairing. possibily a little tricky on the front DR. also I use mostly sram chains on my shimano groupo. good luck
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Old 12-25-10, 07:26 AM   #3
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I wil make a quick prediction, sram red will probably work out better than the ultegra 9 speed pairing. possibily a little tricky on the front DR. also I use mostly sram chains on my shimano groupo. good luck
You didn't read the OP closely enough. He already has a Dura Ace 10-speed crank on the bike.

I'm not that well versed in SRAM's stuff but I believe the Dura Ace crank will work fine with the Red components. Crank chainring spacing seems to be nearly identical among makes. Witness the widespread use of FSA cranks on otherwise all Shimano, Campy or SRAM bikes.

Shimano chains are very good but use a non-replacable joining pin unless you use an after market master link (Conex, KMC, etc.) SRAM chains have a masterlink but SRAM doesn't recommend reusing their 10-speed link. Your choice. Another possibility is a Wippermann chain which does come with a reusable master link. I've had good experience with them.
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Old 12-25-10, 12:39 PM   #4
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There will be no problems when using a Shimano DuraAce crank with a Sram transmission. I have swapped cranks & transmissions with many of my bikes without any problems. The only issues I have noticed occured when I tried very cheap/low end cranks. They didn't shift as good as a better quality crank.

The choice of chain is open to whatever one you want. There is very slight differences between them. I believe the Sram chain will work the best with the Sram transmission. The Shimano/KMC/Campagnolo chains also work very well. I use a KMC missing link on Shimano & Campagnolo chains and use the Sram Power Link with the Sram chain. The Power Link is reuseable but should not be transfered to another chain. I will not use anything Wipperman. Period. Others will have a different opinion. The chain does have a long wear life. I have worked in shops for over 20 yrs. and now run my own shop. I have used the Wipperman chain on bikes on several occations in the past. In my opinion it has been inferior in shifting qualities since 8 speed transmissions came around.
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Old 12-25-10, 03:29 PM   #5
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*Which* 10 speed dura ace crank is it?

7900 performs best with it's on new generation directional chain. You will lose shift performance with a sram chain.
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Old 12-25-10, 03:53 PM   #6
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*Which* 10 speed dura ace crank is it?

7900 performs best with it's on new generation directional chain. You will lose shift performance with a sram chain.

The Crank is a 7800.

Also I found that the FD is a braze on. I need a clamp on (for a steel Waterford R-33). I have heard you can retrofit a sram braze on with an optional clamp. Is this the case and if so, can you get the clamp to fit any size seat tube?
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Old 12-25-10, 04:18 PM   #7
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I agree with the chain/chainring selection (to optimize front derailleur/chainring performance). With a Sram rear derailleur/cassette I tend to lean towards using a Sram or KMC chain. The increase in cost for Shimano products this year has given me a chance to use other options when it comes to chains. Shimano chains do not last as long as Sram/KMC/Campagnolo chains and current Shimano 10 speed chains cost almost as much as KMC & Sram chains. With the new generation of components there is a growing gap of compatibility. As a mechanic this same incompatibility limits my ability to mix & match parts on clients bikes but when matched properly allows my clients bikes to work like Swiss watch.

Buy a front derailleur adapter for you braze-on front derailleur.

Last edited by TLCFORBIKES; 12-25-10 at 04:23 PM.
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Old 12-26-10, 09:09 AM   #8
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You didn't read the OP closely enough. He already has a Dura Ace 10-speed crank on the bike.
Actually you are WRONG, again I said what I meant and meant what I said! 10 speed SRAM could quite possibly be a better PAIRING (notice the same word I used in the original post) than Ultegra 9. Could see the biggest challenge with the front DR adjustment.
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Old 12-26-10, 10:28 AM   #9
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The Waterford site (www.waterfordbikes.com) says that you need a 28.6mm diameter clamp. Having this diameter front derailleur adapter will allow you to use your braze-on front derailleur.
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Old 12-27-10, 10:46 PM   #10
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I built a Waterford with Rival braze-on FD and used one of these:

http://www.xtremebikeandsport.com/Pr...source=froogle

Set up was easy and I've now ridden for two seasons without having to touch it.

Last edited by canam73; 12-27-10 at 10:50 PM.
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