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Kneel before Zod!!
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57 Posts
Discussion Starter · #1 ·
Dont know if this is the right forum but I ride a 29er so I assume its a good place to start. The problem I am having is with my seat. The seat and the post spin left or right depending (getting unclipped, getting off, leaning into a turn etc..). The post does not move vertically. Im a big guy at 240lbs so maybe its because im a fat ass.


Any advice? Thanks
 

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Bike Geek
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420 Posts
Tighten your seat clamp/collar?

Do you have grease on your seatpost? In your seat tube? If you do, wipe it off.

If problem still persists, maybe a change the seatpost. Can't think of anything else to solve your problem By the way, what brand/model is your seatpost? What seat collar?
 

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Registered
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6,543 Posts
Take off the seat and ride the bare post. :p

Is the seatpost the right size? Seat post sizing SUCKS... some are different by .2mm which causes serious clamping problems (i.e. 27.0 seatpost and 27.2 seatpost), even by .2mm. There has to be at least a dozen different sizes. Check the specs of your frame and make sure the post is the right size! The post may not be slipping down because it could be butted up against your water bottle cage screw.
 

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Registered
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2,328 Posts
it could be a problem with the interface of where the post and saddle clamp come together. i had a post fail there before. the top of the post by the saddle would move independently of the rest of the post.
 

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COMBO - President
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296 Posts
Instead of grease use Tacx Carbon Assembly lube, it works fine on metal as well. Basically it has tiny beads suspended in the lube to help prevent slipping. Reduce torque needed by up to 30%, I use on seatpost, brake and shifter clamps, stem clamp. basically anything you clamp... a small tube will last a lifetime.

http://www.amazon.com/Tacx-Dynamic-Bicycle-Assembly-Compound/dp/B000MAMR4U
 

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Premium Member
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6,888 Posts
Check to see if post and clamp are the right size. Did the clamp stretch and max out not allowing it to close any further? Try some grease on the binder bolt. Maybe a bigger stronger clamp is in order. I've seen these double clamp thingys that have one clamp as usual and an additional one attached and above that holds the post. Also you could try the clydesdale forum.
 

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I always bleed like this.
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496 Posts
1) Remove post from bike frame
2) Reach down to the ground and get some dirt, (or have a buddy do this for you if you find yourself straining)
3) Apply to seat post where it is being clamped
4) If it still slips or spins check the size of your post, if it is the correct size, seek professional help.
 

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Registered
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520 Posts
Check to make sure this isn't your problem. I was getting rotation occasionally, and lowering over time.
 

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Aussie Aussie Aussie!
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325 Posts
Is it the right size post?

Try some carbon torque compound. I use it on anything that binds.
 

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Missouri sucks...
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2,305 Posts
Use dirt if you're on the trail. If you have time before your next ride, do it right and get some carbon assembly lube.
 

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Come see me after class
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1,431 Posts
PoorBehavior said:
1) Remove post from bike frame
2) Reach down to the ground and get some dirt, (or have a buddy do this for you if you find yourself straining)
3) Apply to seat post where it is being clamped
4) If it still slips or spins check the size of your post, if it is the correct size, seek professional help.
:lol: :lol:
 
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