Are you sure the tope tube is only 52cm? It looks either the same or longer length than the seat tube to me.
Also can you do a "effective horizontal TT" measurement?
Thanks.
I've just double checked and sure is 52cm top tube with an effective top tube @ about 51cm, I guess this is in order to compensate for the longer drop and tri bar stretch, this frame was built into a bike used with tri bars - infact it did a 55 minute 25 back in 1997!
The frame wasn't originally mine but belonged to a rider who was 5'10" with just short of 32" inseam if that helps with regard to sizing....it also ran with a 13cm stem.
I've just double checked and sure is 52cm top tube with an effective top tube @ about 51cm, I guess this is in order to compensate for the longer drop and tri bar stretch, this frame was built into a bike used with tri bars - infact it did a 55 minute 25 back in 1997!
The frame wasn't originally mine but belonged to a rider who was 5'10" with just short of 32" inseam if that helps with regard to sizing....it also ran with a 13cm stem.