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Please Help: 20mm Seat post

by spin cycle
Tue, Nov 05, 2013 16:20
5

Hi,

I have an old Peugeot steel bike that I want to restore for L'eroica and also use as a commuter/2nd bike.

The problem I have is that the seat post is too short and I can't for the life of me find a post that will fit. It has a diameter of 20mm, does anyone have any ideas where I may be able to get one?

Cheers

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5 comments

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mashergirl | 11 years ago
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I found a NOS on ebay ,24mm and very long, the guy posts from Poland but only took 4 days to UK

http://www.ebay.co.uk/itm/251373908771?ssPageName=STRK:MESELX:IT&_trksid=p3984.m1558.l2649

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Tjuice | 11 years ago
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Is it really as narrow as 20mm? That really seems very narrow indeed...

I have two old steel Peugeots. I replaced the seat post on one, and if I recall correctly bought the post from Decathlon. As it happens, the one I bought was marginally too narrow. It came with two shims to increase diameter of post, but both were too thick. Cutting a panel out of the side of a beer can, I was able to make a perfect shim.

Not sure if that proves to be any help, but good luck!

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spin cycle replied to Tjuice | 11 years ago
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Cheers Tjuice, I had it measured by a bike shop near my dad's (where the bike was in residence) and they measured it with an old micrometre. Last night I double checked with a cotton tape measure (highly accurate, I know) and it is closer to 24mm, so I'm taking it to an engineering workshop near where I work to get a proper reading. I really hope it is a 24mm, but that means I've wasted about 2 hrs on the tinternet looking for something i dont need 102

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drfabulous0 replied to spin cycle | 11 years ago
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spin cycle wrote:

C I've wasted about 2 hrs on the tinternet

Nevermind, that's what it's there for.

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Tjuice replied to spin cycle | 11 years ago
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spin cycle wrote:

Last night I double checked with a cotton tape measure (highly accurate, I know) and it is closer to 24mm, so I'm taking it to an engineering workshop near where I work to get a proper reading. I really hope it is a 24mm(

If it is around 24mm, then it's probably the same as the one on my Peugeot. And a 23.4mm Decathlon post plus beer can shim will do you right. Keeping fingers crossed for you!

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