Let me tap into the beautiful swarm intelligence - I'm stuck between a Medium and a Large.
Height: 182.5 cm (approx. 6'0")
Inseam: 88 cm (34.6")
Elbow to wrist: 28cm
so I am all leg, no torso.
Currently riding a LCR017 in 56 with 380/90.
I experience light lower back pain after 4-5 hours of riding. So the reach of 396.4mm is probably just a tad too long.
TT-023 has:
Size M: Stack 501 mm / Reach 411 mm
Size L: Stack 525 mm / Reach 429 mm
Case for Size M:
- 411mm reach is better suited for a shorter torso. But I have no idea how drastically you lean forward on a TT compared to road, negating some of the extra reach.
- The M's lower stack (501mm) offers a higher aerodynamic ceiling. It's always possible to add spacers to go up, but impossible to make the L's 525mm stack lower.
Case for Size L:
- Sizing charts for the Trek Speed Concept place a 182.5cm / 88cm inseam squarely in a Size L. I know these charts can suck, but that much?!
- The already mentioned "when in doubt, size up" philosophy by Dan Empfield to get a more stable, less twitchy frame. (and headtube being more aero than spacers)
For the aerobars, I would probably choose "L", whatever the frame size - it's relatively short already, right?
Given the reduced adjustability in the cockpit, will my short torso stretch me like a cheese string on the size L? Has anyone with similar proportions ridden the TT-023? Particularly interested if anyone can comment on how the bike feels at the extremes of its fit window.
Currently, where I live, its almost impossible to get a bikefit - it would also be ~250$ to either get told "M" or "L".
Thanks!
