Technical & Reference Section > Tech and Restoration

More seatpost woes! Is there another sizes besides 7/8ths and 13/16th?

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snoopy72:
Shine a touch down the seat mast tube and make sure the weld from the top tube hasn't penetrated into the seat mast tube , I have had this before with a mongoose frame, once I carefully removed this tiny bump the seat post fitted perfectly all the way down the frame.

oldschoolace:
Seat mast is clean as a whistle. Doubled checked my measurements and the mast is 25.4mm diameter with a 1.6mm wall which would mean it should take a 22.2mm post  :-\

Gt post is deffo 22.2mm and its deffo round with no obvious dents, marks, anything that may make it a tight fit.
Really dont want to knock it in with a hammer  :-\

Might just find a 20.6 post and shim it with a pop can if need be

bobbbbsy:
clint we all use mm these days .  :LolLolLolLol:

the euros used it long before us to .

CustardLips:
Make a wooden one Clint.  :daumenhoch:
Then polish it to a mirror finish... no-one'll know.  :D

chubby:


Still here if you need it chum 😊

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