sitwell

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!

hairnet

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.

sitwell

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.

gumbii

does your seatpost have one bolt or two..?

if it only has one, i'd upgrade to a thompson...

AEO

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.

sitwell

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?

coma061

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.

Danzaxbonanza

I'd grease the threads a bit to make sure they're threadig down all the way.

Wake

+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.

AEO

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.

sitwell

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.

sitwell

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?

vanbiker

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

gregjones

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.

vanbiker

You must be really bored, but thanks for your kind guidance

gregjones

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.

atoms

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.

vanbiker

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 .....

sitwell

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.

seau grateau

So you got it to........sit well?

sitwell

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.

Leukybear 

Wow, OP actually delivered after 3 years.

Bikeforumuser0017

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.

solipsist716

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.

eeparis

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.