we are looking for a used tandem that the wife and i can switch as far as captain and stoker but can not find the right size , we have tried ebay and craigs list-- there are no tandem shops within our area, can anyone help
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.