...but I'm ordering tonight and I need a really quick answer. Here's the deal:
I'm going to try and order a Mark V tonight, and I can't decide between the 59cm and the 56cm.
Weight: 150 lb
Torso (crotch to top of head): 40"
Riding experience: Almost exclusively MTB 'till this year, and as such I really prefer a more upright position. A handlebar drop of more than 5" or so would make me pretty uncomfortable. I usually have my stems dialed up about an inch above the "minimum insertion" mark. (!?) I'll probably be using the bike for recreational long-ish rides and commuting. It may see a velodrome once in its life, just for the experience, but that's it. I prefer a light and twitchy feel, for what its worth. I'll probably put bullhorns on there too.
This is a pic of my old bike, dialed up the way I like it:
I think the red line is what is meant by "center-to-center" right?
Notice the saddle is moved as far forward as possible. It still felt like I was a always sitting on the narrow tip of the saddle, like the TT was too long or something. The bike pictured is billed as a 59cm.
Here's the geometry of the Mark V: (or go here: http://irocycle.com/iro/index.php?ma...&products_id=6)
So, in the fg/ss forum's collective expert opinion...which Mark V size suits me, 56 or 59? I don't mind really jacked up seat posts or extreme combinations of headset spacers/weird stems.
Size S/T T/T S/T H/T H/T Wheel B/B C/S Stand
c-c length angle angle length Base Drop Length Over
50cm 46 cm 52 cm 72.0° 75.0° 10 cm 95cm 5 cm 39.1 cm 29.5"
53cm 49 cm 54 cm 72.0° 73.0° 10 cm 95.7 cm 5 cm 39.1 cm 30"
56cm 52 cm 55.5 cm 73.0° 73.0° 12.5 cm 96 cm 5 cm 39.1 cm 31"
59cm 55 cm 57 cm 74.0° 73.0° 15 cm 96.6 cm 5 cm 39.1 cm 32"
62cm 58 cm 59 cm 75.0° 73.0° 17.8 cm 97.5 cm 5 cm 39.1 cm 33.5"