I was looking for a carbon post for my titanium hardtail (20mm layback, 27.2mm diameter and 400mm length)
and then the [url= http://www.chainreactioncycles.com/Models.aspx?ModelID=8476 ]USE Sumo XCR shockpost[/url] caught my eye.
Are they worth the extra?
But what about a reverb?
Reverb is 30.6mm right?
I need 27.2mm.
I would not recommend a Shockpost they are very primitive.
Inside there is a small elastomer stack which can be adjusted for preload (lol). It's possible to buy harder/softer elastomers.
In practice the seatpost compresses when you sit down and when you stand up it either extends suddenly or doesn't move, there is no damping other than the natural damping of the elastomers.
It's suspension Jim, but not as we know it.
Thudbusters are meant to be good, i hear the other types of seat post shock are a bit poo due to stiction
My mistake. KS Lev comes in 27.2mm.
continuity, the OP is looking for a suspension / shock absorbing seatpost. Not a dropper post.
Not used one but the Thudbuster is meant to be a very good suspension seat post. No idea if it is avail in 27.2 though.
Get a nice Ti post, shouldnalso have less issue with glavanic welding.
glavanic welding
Explain please.
Will a good titanium post a substitute for a good carbon post then?
I had a USE shock post a while back, and it was actually quite good. It was deff comfier than a normal ally post. Sold it as i needed to justify another bike build to the missus so got rid of a load of stuff. Otherwise I might still have it on the hard tail.
Although i'm used to a stiff back end again now and think it's better for commuting.
USE shockposts are good but you need the saddle to be somewhat centrally mounted on the post to make it work best, so your weight goes 'down' the post.
(I think I have springs in my XCR...)
It is surprising how active a USE XCR is - I would say that it might be better at coping with small bumps than most FS as the shock bushings have a degree of stiction (which you can get past with a needle bearing set).
For XC they are great as you maintain the pedaling 'directness' of an HT, and if you then put the power down on the rough stuff then the suspension of the post plus the unweighting of the saddle that occurs with the power increase makes a good combination.