2020 SuperSix Evo Seatpost slipping
05-19-22, 03:45 PM
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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.
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.
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?
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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05-19-22, 07:30 PM
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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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05-20-22, 07:54 AM
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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.
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.
05-20-22, 08:15 AM
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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.
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.
05-20-22, 08:33 AM
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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.
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.
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.
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.
08-28-23, 09:59 AM
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Fixed this!
Had this problem for ages, got solution, thought I’d share as I’m super happy about it. 8nm torque is fine. Soap and dry the seat post, clean out the seat tube with paper towel. Assuming the clamp screw moves freely - if not, lubricate.
Cover full depth of post in carbon assembly paste (as in every part that will be inserted into seat tube). Insert, tighten to 5/6 nm. Wiggle post back and forth. Tighten to 8. Wiggle firmly and push down, pull up. Retighten to 8nm.
If this fails I’d loctite the screw, but the above fixed the problem after months.
Cover full depth of post in carbon assembly paste (as in every part that will be inserted into seat tube). Insert, tighten to 5/6 nm. Wiggle post back and forth. Tighten to 8. Wiggle firmly and push down, pull up. Retighten to 8nm.
If this fails I’d loctite the screw, but the above fixed the problem after months.
