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I am looking on ebay and I see that I can get an Ultegra SL 6600 brakeset for about $100 new in box. Does anyone know the difference between these and the newer 6700s?
I haven't seen a compatibility chart that includes the new 105, but I assume the new 105 has the same new brake pull ratios as the 6700 and 7900. So, according to Shimano, 6600 brakes would be an invalid combination. But, it could still be fine. What's the motivation for getting new brakes?deviousalex said:Thank you, that was very informative. Do you have a list of these 'invalid' combinations? I have some 2011 105 shifters and I'm thinking of getting a Ultegra SL 6600-G brakeset, which on ebay runs for about $100 new in box.
I'm not happy with the brakes on the bike I just bought, a 2011 Felt Z85. They are non-branded brakes, so I'm assuming some sorta Tektro OEM brakes. It's not just the brake pads and lack of stopping power, they just aren't very straight and don't stay in position well at all. On my rear brake the right pad isn't sitting right. The rear of the pad is a lot closer to the rim than the front of the pad. I talked to the guy at the bike store and he said it can't really be fixed unless they try to bend the caliper. It's really a safety issue. I almost got into a crash on a group ride yesterday. Someone's rear light flew off their bike and hit a guy in front of me who slammed on the brakes to try to kick the light away from his bike and I almost hit him.Greg Smalter said:I haven't seen a compatibility chart that includes the new 105, but I assume the new 105 has the same new brake pull ratios as the 6700 and 7900. So, according to Shimano, 6600 brakes would be an invalid combination. But, it could still be fine. What's the motivation for getting new brakes?
There are several sources that say they are not compatible according to Shimano: http://www.competitivecyclist.com/r...ura-ace-br-7900-brake-calipers-5088.20.1.html. But, as even this article says, it would be hard to design a brake that didn't brake harder as you pulled the cable, so they must all work.deviousalex said:Also, I forgot to mention that I posted a thread about brake compatibility and everyone said all calipers are compatible with all shifters.
If you bought this bike new and from the same LBS that said it could not be fixed then I would think the LBS should be replacing the defective caliper under warranty. I have many riding friends that have Tektro brakes and they work great, no issues at all. I am not telling you that an upgrade to some bling Ultegra or DA calipers wouldn't be cool, but Tektro calipers do work when they are not defectively manufactured. I have switched the same set of 105 5500 calipers between 3 bikes now and they aren't bling but they work great.deviousalex said:I'm not happy with the brakes on the bike I just bought, a 2011 Felt Z85. They are non-branded brakes, so I'm assuming some sorta Tektro OEM brakes. It's not just the brake pads and lack of stopping power, they just aren't very straight and don't stay in position well at all. On my rear brake the right pad isn't sitting right. The rear of the pad is a lot closer to the rim than the front of the pad. I talked to the guy at the bike store and he said it can't really be fixed unless they try to bend the caliper. It's really a safety issue. I almost got into a crash on a group ride yesterday. Someone's rear light flew off their bike and hit a guy in front of me who slammed on the brakes to try to kick the light away from his bike and I almost hit him.
Sounds reasonable to me. Those are still very nice brakes.deviousalex said:If it works fine, I'll probably just get the "older" Ultegra SL 6600s and put the koolstop salmon if I do any wet riding, which I doubt I'll do on this bike. Seems like a much cheaper option than going for new stuff.