shimming seat posts

[bulliporker]

whats peoples opinions on shimming seat posts , I used to run a use titanium seat post on my vitamin t2 and never had a problem , but what about using a a shim on a alloy frame I know pace do not recommend it on the rc200 frame

 

[02gf74]

My opinion is its a bodge but the 1 bike i had with one never gave sny problems attributed to shim

 

[cherrybomb]

U.S.E. Posts are designed to be used (excuse the pun) with shims, and mid-late 90's clockworks were supplied with a shim for the seat tube so I don't see it as a botch as such.

The thing to take care of is that the shim goes well past the seat/top tube junction. Oh and obviously, that it's the correct size.

 

[02gf74]

How id a use post designed for a shim different to sny other post?

I think it is use trying to reduce costs by making one diametr post with a variety of shims.

 

[cherrybomb]

What I mean, is USE went for a single size post intended to be used with a shim to fit different sized frames, not that the post was special in any other way.

The implication being that shims aren't necessarily a 'bad' thing.

 

[WD Pro]

My Ti frame has a Ti shim fitted as standard.

Dad's Ti frame has a ally shim fitted as standard.

Cant see a problem so long as the shims are long and correctly sized ?

WD

 

[drystonepaul]

No real issue with using shims, and as mentioned they are sometimes used as original equipment by some manufacturers.
My modern Orange P7 for example had a shim fitted as standard.

Can be useful to minimise the chances of a seatpost corroding in the frame. Although removing a seized in shim can also be tricky.

As long as the shim is correctly measured, is well made and is at least 3 - 4 inches long then it should be no problem at all.

I'm not a fan of 'Coke can' shims, and whenever possible I prefer to find the correct sized post for the frame, than use even a properly made shim, just because it looks neater.