a question about shimming

[GT-Steve]

My 1990 Alpinestar has a 31.2 post, which is proving to be a complete nightmare as it seem an impossible size to replace.

I want a longer post, and I'm guessing I might just have to go smaller, and shim.

So I think I might go for a 30.9, and would like to know the best type of shim.

I'm thinking cola (or indeed beer ) can, but would prefer for this to not be the ultimate solution..

Help..

 

[tintin40]

Don't USE have a shim to fit? You have thought of this

 

[GT-Steve]

0.3mm difference fella, USE don't do anything that thin..

 

[vinnya77]

I have a NOS M900 XTR seatpost for sale. You would just need a proper shim it's 26.6mm.

 

[FluffyChicken]

Anything 150um thick will do.

Though you can buy shims from 27.2 to that size.

 

[DegsUk]

http://www.ebay.co.uk/itm/BANKRUPT-SEAT ... 5891a21ab2

 

[GT-Steve]

Anything 150um thick will do.

Though you can buy shims from 27.2 to that size.

Cheers fella, I'll get the micrometer out to see what's suitable..

I really want to go for the fattest post possible, as it's a 1990 Alu frame and I want to preserve it.

I'm paranoid about damaging retro frames now, and a skinny post with fat shim would not help my mindset..

 

[FluffyChicken]

Anything 150um thick will do.

Though you can buy shims from 27.2 to that size.

Cheers fella, I'll get the micrometer out to see what's suitable..

I really want to go for the fattest post possible, as it's a 1990 Alu frame and I want to preserve it.

I'm paranoid about damaging retro frames now, and a skinny post with fat shim would not help my mindset..

Alu one :shock: I'd get the exact perfect size and bond it to the frame

 

[matthew71]

frame

you could buy a frame that fit,s you

 

[GT-Steve]

Re: frame

you could buy a frame that fit,s you

The frame fits me, it's the seatpost that comes up a little short