Originally Posted by
terrors
in the catalogue for the Raleighs in 1985 the sport touring group, i believe, had a number of models in it. one of them was the 'Marathon' another was the Olympian. The seatpost size for the olympian according to sheldon brown's seat post data base is 26.6. and is likely the closest to what is spec'd foor the marathon.
But one thing to note, the '85 Olympian and '85 Marathon don't use the same tubing.
'85 Olympian specs:
http://www.sheldonbrown.com/retroral...-olympian.html
'85 Marathon specs:
http://retroraleighs.com/catalogs/19...-marathon.html
Since TrekSandra had a seatpost that worked fine in terms of diameter but was just too short, had it measured by the LBS and found it to be 26.2mm, ordered a 26.2 and says it works fine, I don't see any reason to think TrekSandra has the wrong size seatpost.