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Ultegra 6700 Shifters Rusting!

Road Cycling “It is by riding a bicycle that you learn the contours of a country best, since you have to sweat up the hills and coast down them. Thus you remember them as they actually are, while in a motor car only a high hill impresses you, and you have no such accurate remembrance of country you have driven through as you gain by riding a bicycle.” -- Ernest Hemingway

Ultegra 6700 Shifters Rusting!

Old 10-09-11, 02:53 PM
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datlas 
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Ultegra 6700 Shifters Rusting!

Hey,

Remember last year someone posted about a problem with his 6700 brake/shifter levers corroding, and everyone joked that he must have very sweaty hands or live near the ocean?

I fear there really is a product flaw in these shifters. At least the first generation 6700, maybe Shimano has fixed it by now.

I recently noticed that my rear brake lever would not "spring back" completely. I figured it was a problem with the cable or housing but after efffing around with those I finally figured out that the corrosion in the metal part of the brake lever that slides along the inside of the carbon fiber lever has corroded a little and is causing friction. The problem is "solved" with some spray lubricant...

But...

These metal levers are a little corroded now, and I suspect the problem is only going to get worse with time. They are only a bit over 1 year old and I would like them to last several years.

Anyone have similar experience, and a good solution? Am I supposed to apply naval jelly and then rustoleum to these?

Not very satisfying, even if I solved the problem in the short term.

PS: Here is the original posting that was from last year: http://www.bikeforums.net/showthread...egra+6700+rust

PPS I know shimano ultegra has a 2 year warranty, and these are less than 2 years, but I am not keen on sending in these parts and not riding my bike for 1-2 months waiting for a replacement. These were bought mail-order as a groupset. It's from a legit Shimano dealer (Lickbike) and I have a receipt but damn it I don't want to stop riding waiting for an effin' replacement.
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Old 10-09-11, 02:58 PM
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Well aluminum corrodes, in varying degrees. Maybe they chose a grade of aluminum with less than great corrosion resistance.

I would think that some light oil would prevent the issue. This might be a good use for WD40. Good for displacing any water that gets in there.
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Old 10-09-11, 03:08 PM
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I am pretty sure they use cheap carbon steel for these parts. Pretty effin silly.
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Old 10-09-11, 03:11 PM
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I think that's unlikely but I don't know. If it was it would start to rust immediately, I can't imagine it would have lasted a year.

Of course it's super easy to find out, touch it with a magnet.
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Old 10-09-11, 03:23 PM
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Well it can't be Aluminium corrosion if you remember some high school level chemistry. Aluminium corrosion causes a very small layer of Aluminium oxide to cover the surface which protects it from rusting through (the oxide layer of aluminium isn't permeable and adheres to the parent material very well). It can corrode completely if there are other things at work to break down the layer of corrosion that is formed like very acidic environments (or a conductive connection to some other metal can be the culprit) but this generally doesn't happen in normal use (maybe if you ride in snow where salt is used, that might somehow work i don't know for sure). Plus you can't technically see aluminium corrosion because every surface of aluminium that you have ever seen is covered in it so his anecdotal comment of spotting corrosion means it isn't alu either.
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Old 10-09-11, 03:23 PM
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Originally Posted by Commodus View Post
I think that's unlikely but I don't know. If it was it would start to rust immediately, I can't imagine it would have lasted a year.

Of course it's super easy to find out, touch it with a magnet.
Magnet sticks.

Definitely Steel.

Do other 6700 users have this problem??
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Old 10-09-11, 04:01 PM
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Yep. Had the problem on the first set of 6700 shifters, took them to my lbs and they ordered replacements. I bought them from ribble originally but the warranty was accepted through my lbs. No delays and the next gen shifters have no rust.
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Old 10-09-11, 04:02 PM
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Originally Posted by jdon View Post
Yep. Had the problem on the first set of 6700 shifters, took them to my lbs and they ordered replacements. I bought them from ribble originally but the warranty was accepted through my lbs. No delays and the next gen shifters have no rust.
Really? I should check with my LBS. The wrench there actually did the assembly for me. But like I said, the actual group was bought from Lickbike.
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Old 12-27-11, 12:34 AM
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Same problem, although the rust is in a slightly different spot.
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Old 12-27-11, 05:36 AM
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I do think this is a major problem with the first batch(es) of 6700 shifters.

But after numerous discussions with Shimano, they are not willing to accept this.

I can only hope that they have fixed the problem with the ones they are making now.
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Old 12-28-11, 05:43 AM
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Originally Posted by datlas View Post
I do think this is a major problem with the first batch(es) of 6700 shifters.

But after numerous discussions with Shimano, they are not willing to accept this.

I can only hope that they have fixed the problem with the ones they are making now.
When I bought the bike (2 years ago), there was different problem with the right shifter, which I discovered pretty soon. I had the bike shop replace that one (with difficulty - not the greatest LBS), which has rusted a lot less, so I suspect there are good batches and bad batches. Whether the new ones are better than the old ones, who knows.

Unfortunately the odds of getting my LBS to replace this under guarantee are small - had problems with Shimano pedals before and it took a month to get it replaced while I sat without pedals. So I may need to buy replacements while I attempt to get this fixed.
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Old 12-28-11, 06:00 AM
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One that induced failure in you and one where you induced failure, still a lot of fail threads. We need more positivity from you. Thanks.
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