Looking to replace my alloy post with a ti one for a bit more flex.

Anyone encountered any problems with sticking? Can \i get away with my usual copper slip for lube?

After 3 years I’ve had no problems. Using frame manufacturer’s own seat post. I think it’s some sort of ceramic grease that’s been used.

i think there’s a reason you can’t use copper slip for it. could be wrong, though!

that’s not true, it appears!

Ive had no probs with an eriksen in a lynskey on-one.
Light smearing of grease when I can be bothered.

Not sure why you would need any lubricant, titanium doesnt react much and is highly resistant to corrosion it shouldnt be sticking.

haven’t had problems with mine on a djab

which i could be selling as i’m splitting the bike 😀

Been using an Airborne Ti seatpost in an Airborne and then an On-One Ti for nearly 10 years and never had a problem. I don’t use any grease as it tends to make it slip down unless you use unreasonable amounts of torque on the clamp bolts. I am very heavy though!

Titanium/ titanium can have problems of galling, so use a metal prep grease.

Many Ti frames use alloy shims so no great issue.
New Van Nicholas ones do use a welded ti insert though.

I run a carbon one in mine, very comfy, but I can’t get it out…

And won’t be forcing it until I have to.

Carbon in a Ti frame here too, very comfortable indeed.

aP – Member
Titanium/ titanium can have problems of galling, so use a metal prep grease.

I doubt it, shouldnt be much movment between te surfaces.

My Ti Merlin has an Al insert built into the seat tube.

Pay careful attention to what sc-xc says:

http://singletrackworld.com/forum/topic/comfy-seatposts

Titanium and aluminium in contact together can result in significant galvanic corrosion of the aluminium. With the corroding aluminium swelling up and doing damage like this:

http://pardo.net/bike/pic/fail-001/FAIL-102.html

Titanium in direct contact with titanium, with the two surfaces rubbing, sliding against each other can result in galling (cold welding). MoS2 molybdenum disulphide.

http://www.sandsmachine.com/grease_t.htm

Titanium against titanium can also cause problems with fretting.

http://www.ewp.rpi.edu/hartford/~lessam/Project/OTHER/1%20Reference%20Materials/SELECTED%20FRETTING-WEAR-RESISTANT%20COATINGS%20FOR%20TITANIUM%20-6-PERCENT-ALUMINUM%204-PERCENT-VANADIUM%20ALLOY.pdf

Had a ti moots post in my ti ibis for about 11 years. Just keep in well greased and check annually.

Any particular grease to use or avoid? I’ve used copper grease on my Ti frame with Ti seat post with no visible problems.

http://www.youtube.com/watch?v=MrdG-swqbCQ

The experiment uses Titanium and Aluminium tubes of the same diameter and thickness. A Ti seat post will have significantly thinner walls than an Aluminium. A Ti seat post will be designed to allow for some flex. To a certain extent flex in Aluminium has to be engineered out, due to material fatigue from repeat stresses.