A thorny, but purely hypothetical, problem for the fitters who frequent this forum:
Woman comes in, wants to be fit for a road race bike, she's 5'5" tall, saddle height of 63cm (BB to saddle top, midway between tip and tail). 165mm cranks.
You give her input on the fit, she's aboard a fit bike that measures X/Y to the handlebar clamp, alternately she's on a fit bike from which you derive an X/Y to that spot via a Serotta X/Y tool or similar.
She prefers a position, if left to her own devices, that yields a bike with a seat angle of 73.5°, nose of her Specialized Romin saddle is 60mm behind the BB, and her handlebar clamp measures 550mm above the BB and 395mm in front of it.
She will face several problems with these results. Name the problems you can think of, and why. Then list any solutions or possible solutions, or clues to solutions, and techniques yielding solutions. Special credit given to those who devise solutions to this problem that include the rider agreeing or choosing the solutions you have in mind of her own accord, rather than our imposing changes in fit metrics on her.
Post your answer below.
Dan Empfield
aka Slowman
Woman comes in, wants to be fit for a road race bike, she's 5'5" tall, saddle height of 63cm (BB to saddle top, midway between tip and tail). 165mm cranks.
You give her input on the fit, she's aboard a fit bike that measures X/Y to the handlebar clamp, alternately she's on a fit bike from which you derive an X/Y to that spot via a Serotta X/Y tool or similar.
She prefers a position, if left to her own devices, that yields a bike with a seat angle of 73.5°, nose of her Specialized Romin saddle is 60mm behind the BB, and her handlebar clamp measures 550mm above the BB and 395mm in front of it.
She will face several problems with these results. Name the problems you can think of, and why. Then list any solutions or possible solutions, or clues to solutions, and techniques yielding solutions. Special credit given to those who devise solutions to this problem that include the rider agreeing or choosing the solutions you have in mind of her own accord, rather than our imposing changes in fit metrics on her.
Post your answer below.
Dan Empfield
aka Slowman