Join Date: Jun 2008
Location: Just outside Kitchener, Ontario
Bikes: Nishiki Continental, Bilenky custom travel tinker, home built winter bike based on Nashbar cross frrame
Actually, women typically have longer legs and shorter torsos for a given height than men. So four inch difference in height might mean quite similar leg lengths. Or not. Averages are only averages, and the variability is significant.
If the two riders fit the same size road bikes, it shouldn't be too hard to adjust saddle height and stoker stem length. Captain saddle-bars distance will be optimized for only one rider, or a compromise, though.