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Old 03-25-11, 10:57 PM   #1
Elmog
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105 Brake Compatibility

Hello,

I have a 2003 Specialized Allez Elite road bike that I'm planning on upgrading the brakes. The bike came with a no-name set of brakes and I would like to upgrade to Shimano 105 BR5600 brakes. I understand that these calipers do not work with the 5700 series shifters (according to Nashbar.com), but how about with the 105 brifters that came standard on my 2003 road bike? I thought that brakes were pretty much interchangeable, but perhaps I'm wrong. Here's a link to the brakes I would like to upgrade to: http://www.nashbar.com/bikes/Product...2_194932_-1___

Thanks if you can share any experience you have with the compatibility of this upgrade before I order a new set of brakes. Jim
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Old 03-25-11, 11:09 PM   #2
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All is fine with the shifters you have. Shimano changed the pull ratio on the 5700 STI shifters.
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Old 03-26-11, 12:10 AM   #3
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Similar thread from earlier this week, answers this, sub 5700 for 6700

http://www.bikeforums.net/showthread...oss-compatable
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Old 03-26-11, 07:48 AM   #4
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Thanks for the info. It turns out that I might opt for the 5700 instead of the 5600. Does anyone know if the 5700 requires more pull length than the 5600? Thanks again.
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Old 03-26-11, 08:46 AM   #5
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Thanks for the info. It turns out that I might opt for the 5700 instead of the 5600. Does anyone know if the 5700 requires more pull length than the 5600? Thanks again.
Don't mix the new calipers with old STI's. It'll feel like mushy marshmallows. Don't buy into a problem.
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Old 03-26-11, 11:08 AM   #6
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It would be interesting to know why Shimano changed the cable pull of their newest STI's and the required pull of the new brake calipers.

Other than obsoleting their old brakes and forcing you to buy new ones when you go to the current levers, what problem were they solving?
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Old 03-26-11, 11:14 AM   #7
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It would be interesting to know why Shimano changed the cable pull of their newest STI's and the required pull of the new brake calipers.

Other than obsoleting their old brakes and forcing you to buy new ones when you go to the current levers, what problem were they solving?
This whole thing is news to me. I agree, I don't know what Shimano is thinking. Seems to me they're kind of shooting themselves in the foot in the biggest market, which is the OEM market. Interestingly, we have several new bikes in our shop with ST-5700 and ST-6700 shifter/brake levers, none of them have Shimano brake calipers, they're Tektro or Tektro derivatives. Weird. I've ridden the bikes and don't notice anything unusual with the braking. Maybe it really doesn't make any difference, I don't know.
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Old 03-26-11, 11:52 AM   #8
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I don't know what Shimano is thinking. Seems to me they're kind of shooting themselves in the foot in the biggest market, which is the OEM market.
Think that would have thought about this, and and want this to be the case, Shimano want's to sell more brakes, and by having a change to the pull ratio, have given them a year of domination before the OEM lot get compatiable brakes onto the market.

If I got a bike with Tektro brakes, the first thing would be to get Shimano's, as they work a lot better regardless of the groupset (and have done).
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Old 03-26-11, 12:28 PM   #9
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Don't mix the new calipers with old STI's. It'll feel like mushy marshmallows. Don't buy into a problem.
Why would the brakes feel mushy? It's a lever pulling on a cable and activating a caliper. Would you be so kind as to offer an explanation? Thanks
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Old 03-26-11, 12:46 PM   #10
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Think that would have thought about this, and and want this to be the case, Shimano want's to sell more brakes, and by having a change to the pull ratio, have given them a year of domination before the OEM lot get compatiable brakes onto the market.
In theory that may be true, but Shimano's biggest customer base is bicycle manufacturers, not individuals. One place bicycle manufacturers, more often than not, substitute non-group parts (i.e. Tektro) is the brake calipers. If I'm a bike manufacturer, and Shimano is saying these new levers should really only be used with the matching brakes, ít's gonna be a turn-off, and maybe make me look elsewhere for OEM parts. Or not. I dunno, I just rode a ST-5700 equipped bike with Tektro brakes, and honestly, the brakes feel great.
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Old 03-26-11, 01:37 PM   #11
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I didn't think it would be a problem since people mix and match brakes from different brands all the time. Please take me to school on this.
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Old 03-26-11, 03:54 PM   #12
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If I got a bike with Tektro brakes, the first thing would be to get Shimano's, as they work a lot better regardless of the groupset (and have done).
Actually the first thing to do is change the pads for Kool Stops. After that you may not be is such a hurry to replace the calipers too.
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Old 03-26-11, 08:24 PM   #13
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http://problemsolversbike.com/products/travel_agents
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Old 03-27-11, 08:46 AM   #14
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Sorry, but Travel Agents would be a silly solution for this even if it did adjust the cable pull the right amount. I would have to laugh if I saw a road bike set up with, say, ST-5600 shifter/brake levers, BR-5700 brakes, and Travel Agents. What a cluster that would be. Travel Agents are fine for bikes with conventional road levers and linear pull brakes.

Last edited by well biked; 03-27-11 at 08:56 AM.
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Old 03-27-11, 01:06 PM   #15
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Actually the first thing to do is change the pads for Kool Stops. After that you may not be is such a hurry to replace the calipers too.
I agree with that. I'd say adjustment and pads give you more difference than differences between dual pivots themselves.
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