I am new here so please go easy on me
I am looking at buying a Cannondale SuperSix 60cm but I am trying to figure out some measurements
Some details about me. I am 91 kg, 6 feet 4 (194.5cm) with a 90cm inseam (34.5 inches) but I am a bit odd shaped (short legs, long body).
I quite like a race fit instead of a relaxed bit hence me looking at the 60cm instead of the 63cm (which it isn't available to me).
My Bike fit said that I need a top tube length of in between 58.8cm to 59.2cm and the SuperSix 60cm is 59cm so that is bang on really.
I am a bit more concerned about the seat tube, by looking at the Cannondale website I can see that the stack is 59.3cm. My recommended seat tube length (center to top) is in between 60cm for racier fit and 61.5cm for a slightly more relaxed fit. So I am a bit worried about this although I assume I would be able to correct this with seatpost height and 1 or 2cm of spacers which isn't too bad.
My questions are, is stack a true representation of the seat tube length (center to top)? I have asked elsewhere to someone with a SuperSix 60cm and they have said it measures 61cm but this sounds far too much as I though stack and seat tube length (c-t) were more or less the same?
Any help would be appreciated.
First of all, seat tube lenght is measured along the seatube (center of bottom bracket to top of seat tube) so diagonally
and stack is measured vertically from (again) the center of the bottom bracket to the top of the centerline of the headtube, so even if the top of the seat tube and the top of the head are the same height horizonatlly the seat tube will always be longer (but not higher!)
If you look at the Geometry drawing of the Super Six you will see that it has a slighlty sloping top tube (I believe it is 2 cm from front (head tube) to rear (seat tube)
I believe the extension of the seattube above the top of the top tube is about two cm, so the (vertical!) stack height of the headtube and the seattube is practically the same.
Question: What would be your seat height (center of bb to top of saddle measured along the seattube)
This would give you an idea as to how far the seatpost would stick out the frame