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jBola-
Arrrggh, its to tight for me - I would like to go even further up the 30s and adding some knobbs as well ;)
And regarding the question of @Foreigner65 : ctt means center bb to top of the seattube; ctc means center bb to the middle of the toptube/seattube junction (the way you meassured)
caemis
Sorry @jBola for some reasons I wasn't notified that you already replied to my question some time ago. But 30mm unfortunately is too skinny for my liking :) good luck though!