For the record, I am 5'9.5", and ride the 17.5" frame. That is what the store said was my size, and I feel just fine on it. I did slide my seat all the way back to get my knee centred on the pedal spindle. This is my first Hybrid, so I do not have other experiences on the feeling of a perfect hybrid fit.
There are also two other forum members that stated in other threads that they are 5'9" and ride a 17.5" DS frame.
Originally Posted by
Sunsanvil
For the absolute minutia obsessed, I've plotted the frames in terms of seat and head tubes to put some perspective on how they really differ.
P.S. Being minutia obsessed myself, your diagram is very interesting. Seems a one size bigger frames makes only minor changes other than lifting the cross bar up, and having more seat tube instead of seat post exposed for a given seating hight. Considering my privates are brushing against the top tube already (when standing), there would probably not be much benefit to the 19" other than size envy
