Technical & Reference Section > Tech and Restoration

GT seat post ID

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That Swan Guy:
Probably last longer than the original ones  :LolLolLolLol:

BMX1973:
Where would the baseball symbol be, at the base?  :-\

I know it can be confusing with the seat posts as there were a lot of fakes around a few years back!  >:(


--- Quote from: rodriguez on March 17, 2015, 04:01 PM ---Never seen the GT stamp on the left before Eddie   :coolsmiley:

The two posts on the right are probably both foreign, if they don't have the baseball stamp they'd be made in Taiwan I'd guess, different factories would explain the shapes.

--- End quote ---

BMX1973:
Must be confusing with the unknurled and unstamped bars.  :-[ Bit like SE bars.  :-\

Best get stamped ones then.  :daumenhoch:

 
--- Quote from: That Swan Guy on March 16, 2015, 11:31 PM ---
--- Quote from: BMX1973 on March 16, 2015, 09:57 PM ---Is this the same for bars? Do they all have knurling?  :daumenhoch:

Sorry Mikku don't mean to thread hijack!  :-[  :)


--- Quote from: rodriguez on March 16, 2015, 12:34 PM ---pre 84 unstamped like the bars

84-89 stamped GT (side by side logo) 4130 and baseball symbol

89-oblivion stamped GT (vertical logo) cr-mo

--- End quote ---

--- End quote ---

No basically. Early bars had neither a stamp nor knurling. The shape, size and cross bar width determines an early set of GT Pro bars.
they eventually got stamped and knurled. then the cross bar became oval and blimey it was the 90s.  :LolLolLolLol:

Shape and size is the big give away for GT Pro bars :daumenhoch:

--- End quote ---

BMX1973:
 :)


--- Quote from: tfi_friday on March 18, 2015, 10:43 AM ---
--- Quote from: BMX1973 on March 18, 2015, 08:42 AM ---Where would the baseball symbol be, at the base?  :-\

--- End quote ---

My 1985 post is like this:

    GT
    CA
CR-MO 4130



Then at the lower part of the post at the insert line you'll see the baseball symbol

 ------------
   INSERT
 THIS LINE
   JAPAN @

"@" is a baseball symbol.



--- End quote ---

Mikku:
Thanks for the info and photos on this one guys!  :bow:

So taking all the above in account, would it be accurate to amend rodriguez's three-way breakdown as follows:-

pre-84 unstamped = made in California

84-89 stamped GT (side by side logo) 4130 and baseball symbol = made in Japan

post-89 oblivion stamped GT (vertical logo) cr-mo = made in Taiwan

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