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Ultegra 6800 chainring snap - frame dented and cut

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Ultegra 6800 chainring snap - frame dented and cut

Old 06-06-14, 09:09 PM
  #51  
Bujajuja
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Sorry it happened cheers
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Old 06-06-14, 09:13 PM
  #52  
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QUOTE=shelbyfv;16828508]This is an excellent resolution for you and you've certainly found a shop worth patronizing. Paying for the repair of the collateral damage is way beyond what most would expect. Congratulations![/QUOTE]


Yeah, someone is a noob... op or owner. Anything can happen at any time, seasoned cyclistshould know that.... and a hardend shop will tell you to gtfo, if you try and blame "acts of god" on them.

.. and please edit : "frame cut"

Last edited by martinus; 06-06-14 at 09:16 PM.
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Old 06-07-14, 12:20 AM
  #53  
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Originally Posted by martinus View Post
Yeah, someone is a noob... op or owner. Anything can happen at any time, seasoned cyclist should know that.... and a hardend shop will tell you to gtfo, if you try and blame "acts of god" on them.
The shop didn't have to do what they're doing. I didn't even ask: the manager came to this decision after talking with the owner. Bike Gallery went above and beyond what those "hardened shops" would do because they value excellent customer service. They have retained me as a valued customer who will continue to buy more products; and in addition, direct people to the shop who inquire about my bike (which is often). My wife is saving to purchase her dream bike (a Co-Motion Klatch), where do you think she will go for that, all of the accessories, and professional fitting?

Originally Posted by shelbyfv View Post
Paying for the repair of the collateral damage is way beyond what most would expect. Congratulations!
I agree, I am still in shock! I'm very fortunate.

Last edited by Solid_Spoke; 06-07-14 at 12:28 AM.
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Old 06-07-14, 03:44 AM
  #54  
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Originally Posted by vwchad View Post
I did not suggest that he just roll over and say "oh well". The intent of my post was to point out that should he be denied a replacement frame or repair by Shimano, Co-Motion, or the bike shop, that all is not lost. I would have thought it was obvious... I sincerely hope that he gets it fixed or replaced, but if nobody steps up to cover the cost of the frame or repair, then what are his options? Obviously this is a worst case scenario, but I was simply trying to suggest that the frame may not be doomed to the scrap bin. To be honest, I'm surprised that I would have to explain this...

OP, I hope you have not taken my post as sugguesting that you are just going to have to deal with it. Your thread caught my interest as it seems to be an unusual, and unfortunate, failure. I've offered my opinions for possible causes of this failure simply because I found it interesting and thought that just maybe my ideas could possibly be helpful in identifying a cause for this failure and a possible solution if you are left dealing with it on your own. As I stated above, I hope things work out well in the end and that you are able to get this all fixed withouth having to shell out your own hard earned cash. Please take my previous post simply as it was intended; to provide a possible solution to a worst case scenario, that is all.
Sorry if I misunderstood you. I just found your post devoid of any empathy regarding the pride of ownership issues that so often color our attitudes toward our bikes. Your reply has clarified your intent. Thanks.
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Old 06-07-14, 04:42 AM
  #55  
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Good outcome for you OP - enjoy your refurbished rig when it arrives back to you.

cheers
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Old 06-07-14, 05:46 AM
  #56  
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Originally Posted by Solid_Spoke View Post
The shop didn't have to do what they're doing. I didn't even ask: the manager came to this decision after talking with the owner. Bike Gallery went above and beyond what those "hardened shops" would do because they value excellent customer service. They have retained me as a valued customer who will continue to buy more products; and in addition, direct people to the shop who inquire about my bike (which is often). My wife is saving to purchase her dream bike (a Co-Motion Klatch), where do you think she will go for that, all of the accessories, and professional fitting?



I agree, I am still in shock! I'm very fortunate.
Customers ... atleast you changed your tune, about co-mo covering this with their warr (against mfg defects) ... bike gallery must be doing well ...
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Old 06-08-14, 01:35 PM
  #57  
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Ugh. What model comotion? I have a new Cascadia but set it up with ultra 9 speed. If you bought whole bike assembled from Como then they should handle warranty through your lbs.
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Old 06-09-14, 09:32 AM
  #58  
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Originally Posted by RollCNY View Post
How, pray tell, can you tell that from a bad photo that doesn't show the fracture? And then please let me know how a stress riser "causes" metal fatigue. I was taught cyclic loading causes fatigue failure.
Its aluminum not like its 718. I like aluminum not to much stencil strength.
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Old 06-09-14, 09:46 AM
  #59  
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Originally Posted by kaliayev View Post
That's what it looks like to me. Have to remember with only 4 arms in the 6800 crank and at the bolt where the stress occurred half the diameter of the chainring would not have an arm for support.
Or an over torqued chainring bolt.

There are several possibilities here:

1: Chainring bolt is loose for some time,and eventaully comes off or fails. (absence of noise before hand makes this seem unlikely)

2:Bolt fails because it was over torqued. (Spec is 5-10nm)

3: Chainring fails to metal fatigue (highly unlikely for 6 month old chainring) or manufacturing defect. (possible).

4. Chanring fails because derailleur isn't adjusted properly, chain is snagged, and OP is putting a lot of torque out accelerating form the light.

My bet is No 4, possibly with a combination of 4, and 1 or 2.
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Old 06-09-14, 09:54 AM
  #60  
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Wow just finished reading this thread and glad to hear you're being taken care of. The scary similarities is I have a new Co-motion Espresso that is about the same age, group set and price. The big difference is I assembled the bike myself. Now before you rant I've been building up my own and friends bikes for 20 plus years and have never had an issue. I will definitely check the chain ring bolts before this mornings ride.


Slackerprince: As for why choosing a Co-Motion? I have one of there tandems and I was so impressed with the ride that I decided to get a single for my 50th birthday. There is nothing like the ride quality of high end steel and it should be the last road bike I will ever own.
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Old 06-09-14, 09:55 AM
  #61  
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Originally Posted by dwmckee View Post
Ugh. What model comotion? I have a new Cascadia but set it up with ultra 9 speed. If you bought whole bike assembled from Como then they should handle warranty through your lbs.
Co-Motion Norwester, a complete through Co-Mo. The lifetime warranty does not cover "acts of God".
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Old 06-09-14, 10:03 AM
  #62  
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Originally Posted by fstshrk View Post
Wow.

With all the problems that Shimano is having with shifting on the 11 speed drivetrains and now this?

I guess I am getting a SRAM bike.
My 11 speed Ultegra set up has been shifting flawlessly and couldn't be happier with it.
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Old 06-09-14, 03:56 PM
  #63  
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Originally Posted by stevemtbr View Post
My 11 speed Ultegra set up has been shifting flawlessly and couldn't be happier with it.
Just wait until the cable snaps and then let us know.

Search function is your friend on both this forum and weight weenies. I even did not mention the exploding cassette.
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Old 06-09-14, 05:55 PM
  #64  
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Originally Posted by stevemtbr View Post
Slackerprince: As for why choosing a Co-Motion? I have one of there tandems and I was so impressed with the ride that I decided to get a single for my 50th birthday. There is nothing like the ride quality of high end steel and it should be the last road bike I will ever own.
You've got plenty of mileage left in your old bones to purchase MANY more road bikes.
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