Seat post care

snoogly

Maximum Pace
Oct 14, 2007
695
48
48
Machida, Tokyo
#1
I have never really been sure about the best way to keep my seat post happily housed in the seat tube. Aluminum seat post, steel frame. Should be greasing/lubing the seat post? How much? How often?
 

kpykc

Speeding Up
Jun 13, 2007
804
4
38
38
Tokyo
#2
I have the same combination on my bike. I only take the post out after rainy rides to remove sand, dirt and water.
It's usually recommended to take the post out, clean it and lubricate it (just wipe it with an oily tissue) once in a while. I use Wako's Ruspene for that.
 
May 22, 2007
3,571
1,390
143
Kawasaki
halffastcycling.com
#4
Many thanks. I have always been paranoid about over-lubing, and then having the post slowly slither down the tube .....
That can definitely happen, depending on the combination of materials and design of frame, post and clamp. I had it initially on my TImTanium frame with Thompson seatpost. The solution for me was a slightly beefier (500 yen) clamp.

But equally you want to avoid a stuck seatpost down the road. The reading for today is from the Gospel according to Sheldon Brown, chapter 1:
Always use grease. The inside of the seat tube should be heavily coated with grease all the way 'round before you install the seatpost. [not carbon fiber seatposts, which easily can be damaged by seatpost clamps, too. If you have a stuck carbon-fiber seatpost, see suggestions later on this page -- John Allen] If you use enough grease in the seat tube, there is no need to grease the seatpost itself. (When you make a peanut butter sandwich, you only need to put the peanut butter on one of the slices of bread.)
 

GSAstuto

Maximum Pace
Oct 11, 2009
945
242
103
tokyo
www.roadfixie.com
#5
Using some of the 'grit grease' can help if you want to increase binding power without overtorqueing. Seems a bit contradictory - however - the grease does help to prevent galvanic corrosion and long term sticking, while the 'grit' provides enough frictional component to keep the post in its desired place.