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2020 SuperSix Evo Seatpost slipping

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2020 SuperSix Evo Seatpost slipping

Old 05-19-22, 03:45 PM
  #1  
Ranger Rick
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2020 SuperSix Evo Seatpost slipping

Hey, so I have had the bike for a year or so. Since day1 the seat post has been slipping.
I have lathered it with carbon past which seems to do the trick untill I make any adjustment to it. Once I adjust it, the seat post just slipped again. It's tightened to the max - 6nm
No issues with creaks, just slipping. I'm 6 foot 3 + 93kg and ride a 60.
anyone else have this problem? What did you do.
​​​​
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Old 05-19-22, 05:37 PM
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Seat post collars are not all same great quality, Maybe try a different seat post collar?
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Old 05-19-22, 05:57 PM
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I would pester the shop where you got it, call Cannondale as well and when nothing worked for me a little bit of valve grinding compound added to the carbon paste.
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Old 05-19-22, 07:30 PM
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Originally Posted by easyupbug View Post
I would pester the shop where you got it, call Cannondale as well and when nothing worked for me a little bit of valve grinding compound added to the carbon paste.
I wouldn't pester anyone, I would go in and enquire and have them take a look but no need to pester anyone unless they are completely unwilling to help.
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Old 05-20-22, 07:54 AM
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Originally Posted by Ranger Rick View Post
Hey, so I have had the bike for a year or so. Since day1 the seat post has been slipping.
I have lathered it with carbon past which seems to do the trick until I make any adjustment to it. Once I adjust it, the seat post just slipped again. It's tightened to the max - 6nm
No issues with creaks, just slipping. I'm 6 foot 3 + 93kg and ride a 60.
anyone else have this problem? What did you do.
​​​​
Not trying to be snarky, but it seems like the solution is to stop making adjustments to it after you've inserted it?
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Old 05-20-22, 08:15 AM
  #6  
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If this is something that began soon after you bought the bike, I will have been pestering the shop too. Actually it wouldn't be pestering. Most shops will be happy to solve such issues for anyone buying a new bike from them. And if you bought in the mid to upper tier range of that bike model they'll go out of their way to please you.

Usually when things slip, I tighten them a little tighter. Not much, just a little. Maybe your torque wrench isn't correct. But seeing that warranty and possibly the good graces of your LBS still might be in play, don't do something that might void your warranty.
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Old 05-20-22, 08:33 AM
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Originally Posted by Iride01 View Post
If this is something that began soon after you bought the bike, I will have been pestering the shop too. Actually it wouldn't be pestering. Most shops will be happy to solve such issues for anyone buying a new bike from them. And if you bought in the mid to upper tier range of that bike model they'll go out of their way to please you.

Usually when things slip, I tighten them a little tighter. Not much, just a little. Maybe your torque wrench isn't correct. But seeing that warranty and possibly the good graces of your LBS still might be in play, don't do something that might void your warranty.
Agree with all of this. Asking a bike shop to troubleshoot a problem with a bike isn't pestering, it's business. If a bike shop is annoyed with customers who come in with problems they don't know how to solve, they need to re-think their business practices.

It's worth noting that the OP said this is a 2020 MY bike that they've had for a year, so it's possible that the bike was bought used/online and not from a local shop. Regardless, any Cannondale dealer should be more than willing to help me solve a problem like this, but the OP should assume they're paying the shop for labor costs unless told otherwise.
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Old 05-23-22, 01:52 PM
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Bring it back to the shop and see if the seat post or if the frame can be warrantied. It's probably just a bad seat post but maybe the seat post tube's tolerance is off. In the meantime I would try and make a shim out of a really thin piece of plastic or carboard.
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Old 05-26-22, 12:25 PM
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Originally Posted by Jrasero View Post
Bring it back to the shop and see if the seat post or if the frame can be warrantied. It's probably just a bad seat post but maybe the seat post tube's tolerance is off. In the meantime I would try and make a shim out of a really thin piece of plastic or carboard.
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