The crank length on the 46 cm Complete LHT is 165mm.
Your fitter says you'd be better off with a 170mm. (which is typical for a woman. We have longer femurs than men, and so need longer crank arms than men of similar size to achieve correct KOPS)
HOWEVER: 5mm is pretty damm small, and well within the realm of cleat positioning for cleated pedals (aka "clipless") or foot positioning for platform pedals, or even shifting the saddle for long-armed riders.
Your fitter is pissing me off. If he can't cope with 5mm difference with a new rider who doesn't yet know her preferences, and within a newbie budget; then I want his job.
ETA: I'm 5'8", with 33 inch inseams. My Surly CC 52cm has 170mm cranks, stock. I'm happiest with 175mm cranks with my cleated bike (Waterford). I have platform pedals on my CC so naturally move my feet to the optimal position for my power output relative to KOPS. No problem. I truly believe you would have no problem with 165mm cranks.
Last edited by KnottedYet; 02-27-2010 at 02:39 PM.
"If Americans want to live the American Dream, they should go to Denmark." - Richard Wilkinson