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Saddle sliding back

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Saddle sliding back

Old 05-22-10, 01:24 AM
  #1  
sitwell
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Saddle sliding back

My saddle keeps sliding all the way back in the seatpost by around 20-30 miles of riding. I have it tightened about as tight as I can get it with a Park multitool. Not that big of a deal to reposition it every day or two, but I'm wondering if this is something that's happened to other people. Do I need to get a better seatpost? Am I just a ***** and need to tighten it more? Fwiw the seatpost is whatever comes stock on an iro angus and the saddle is a charge spoon. Any advice would be appreciated. Also I'm a bigger dude at like 200 pounds. Don't know if that matters. Any advice would be appreciated!
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Old 05-22-10, 11:14 AM
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get a longer wrench for more torque. I had a similar problem, my seat didnt move back but would tilt down ever so slowly, because I was using a small wrench.
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Old 05-24-10, 01:22 AM
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Originally Posted by hairnet View Post
get a longer wrench for more torque. I had a similar problem, my seat didnt move back but would tilt down ever so slowly, because I was using a small wrench.
Thanks for the response. Makes a ton of sense. I'll admit though that I'm kind of fishing for a reason to invest in a Thomson seatpost. I'd like to have to have the angle of the saddle between two notches on my current seatpost. If anyone has a Thomson, do you find that it's worth the money? I don't care about weight as much as I do about it being adjustable.
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Old 05-24-10, 01:35 AM
  #4  
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does your seatpost have one bolt or two..?

if it only has one, i'd upgrade to a thompson...
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Old 05-24-10, 01:44 AM
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if you're thinking of getting a thomson, be sure it'll work with the saddle position you have currently, since there's only a zero setback and 16mm setback version.

most stock seatposts have 25mm of setback.
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Old 05-24-10, 02:29 AM
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Seatpost only has one bolt. There's no bend in the actual seatpost, but the part where the saddle goes in is definitely set back a bit. The saddle is like 75% back already. Any recommendations?
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Old 05-24-10, 03:16 PM
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This may be ********, but are your rails and post the same diameter? If so, I would listen to previous advice about a longer wrench. 200 pounds shouldn't make any difference at all.
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Old 05-24-10, 04:32 PM
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I'd grease the threads a bit to make sure they're threadig down all the way.
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Old 05-24-10, 07:00 PM
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Originally Posted by Danzaxbonanza View Post
I'd grease the threads a bit to make sure they're threadig down all the way.
+1

Unless lubricated, the threads will commonly bind up and "gall" the metal surface. Lubrication (oil, grease, etc.) will allow the threads to slip and the bolt to rotate as it was designed.
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Old 05-24-10, 07:24 PM
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if the saddle still slips, you have it tightened down with grease and you need a lot of setback, then you can try either kalloy uno, which has 30mm setback or velo orange grand cru, which is 32mm setback and double bolted.
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Old 05-25-10, 12:58 AM
  #11  
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Thanks so much for the help guys. Greased the threads and used a longer wrench and I'll see if that takes care of it. If it doesn't I'll probably get a new seatpost. Thanks for the suggestions and the heads up on the setback of the Thomson. I could have wasted a bunch of money on that. Is there a good way to measure the setback of a seatpost? I'd like to know for sure what I currently have.

Last edited by sitwell; 05-25-10 at 01:19 AM. Reason: grammatical idiocy
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Old 05-25-10, 01:15 AM
  #12  
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One more question. Do you guys grease the rails on your saddle? It seems like I've heard conflicting opinions on this. The rails on my saddle are chromo, so I figured they needed it. Could this make a difference?

Last edited by sitwell; 05-25-10 at 01:22 AM. Reason: gin and tonic
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Old 06-25-13, 12:34 PM
  #13  
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Originally Posted by sitwell View Post
One more question. Do you guys grease the rails on your saddle? It seems like I've heard conflicting opinions on this. The rails on my saddle are chromo, so I figured they needed it. Could this make a difference?
a
I would not grease the rails...I did that to stop a squeak and had problems with the saddle sliding back. I over-tightened the bolt, stripped out the threads of the alloy "nut", had to buy an oversize bolt and tap the nut....now if I tighten as much as I possibly can, it seems to stay put. Very frustrating
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Old 06-25-13, 12:51 PM
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Originally Posted by vanbiker View Post
a
I would not grease the rails...I did that to stop a squeak and had problems with the saddle sliding back. I over-tightened the bolt, stripped out the threads of the alloy "nut", had to buy an oversize bolt and tap the nut....now if I tighten as much as I possibly can, it seems to stay put. Very frustrating
Do you realize that you just responded to a post that was made 37 months ago today?

Odds are the fella has found out by now.
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Old 06-25-13, 03:10 PM
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Originally Posted by gregjones View Post
Do you realize that you just responded to a post that was made 37 months ago today?

Odds are the fella has found out by now.
You must be really bored, but thanks for your kind guidance
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Old 06-25-13, 06:13 PM
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You gotta be ****ing nuts........I'm not the hard up bastard that has nothing better to do than to dig up three year old threads on a bike forum.


Last edited by gregjones; 06-25-13 at 06:16 PM. Reason: Previous poster was too stupid.
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Old 06-26-13, 02:39 PM
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Originally Posted by gregjones View Post
You gotta be ****ing nuts........I'm not the hard up bastard that has nothing better to do than to dig up three year old threads on a bike forum.

I'm guessing there is no consensus on this, but as far as I'm concerned, answers to questions are not just for the OP, but anyone who might stumble onto the thread.
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Old 06-26-13, 07:06 PM
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Originally Posted by atoms View Post
I'm guessing there is no consensus on this, but as far as I'm concerned, answers to questions are not just for the OP, but anyone who might stumble onto the thread.
Exactly, thank you "atoms". Perusing subjects no matter how old the previous posts is a great way to source information on this site; now I don't need to reply to the previous .....
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Old 07-01-13, 11:56 AM
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Originally Posted by vanbiker View Post
Exactly, thank you "atoms". Perusing subjects no matter how old the previous posts is a great way to source information on this site; now I don't need to reply to the previous .....
I agree. Forums are much more searchable and usable when there's one thread dedicated to each subject. It seems like some forums work one way and some work the other. If it helps anyone, I greased the seatpost bolt and used a longer wrench and it worked fine.
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Old 07-01-13, 12:14 PM
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So you got it to........sit well?

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Old 07-01-13, 02:12 PM
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Originally Posted by seau grateau View Post
So you got it to........sit well?

Haha! I was watching an episode of Arrested Development with Sally Sitwell when I signed up. I don't claim to be the most creative person in the world.
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Old 07-01-13, 02:25 PM
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Wow, OP actually delivered after 3 years.
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Old 07-01-13, 06:15 PM
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i think your weight does matter. I think that the saddle and seatpost matter. some saddles have oval rails which can't be used on side clamping seatpost. If you're mentally challenged, you might be using a monorail saddle on a "normal" seatpost.
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Old 07-02-13, 12:56 AM
  #24  
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Originally Posted by GT4 View Post
If you're mentally challenged, you might be using a monorail saddle on a "normal" seatpost.
Except for the fact that OP explained his problem was solved with grease and a better wrench.

If you're gonna make stupid jokes about mental competence, you should make sure you're mentally competent probably.
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Old 10-21-18, 12:55 AM
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Originally Posted by vanbiker View Post
a
I would not grease the rails...I did that to stop a squeak and had problems with the saddle sliding back. I over-tightened the bolt, stripped out the threads of the alloy "nut", had to buy an oversize bolt and tap the nut....now if I tighten as much as I possibly can, it seems to stay put. Very frustrating
Thanks for your post. You are exactly right that even if the guy who started this thread has found a solution, there are others out here who are still looking for answers. I have a tilting seat on my new Specialized Diverge. The bike shop tightened the bolt, but every time I go over a bump, the seat tilts back and I have to adjust it. Extremely annoying. I've read that greasing the bolt AND the rails solved the problem for one rider; greasing the rails seems very odd to me but I'm going to try greasing the threads of the bolt and see if that helps. There must be a flaw in this saddle-clamp design. I've never had this problem on my two Giant/Liv bikes that I've been riding for years.
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