[foxyv]

I kind of wonder what it would be like to build a tricycle using pre-1800s technology. What would be the most difficult challenge? Lack of chain drive? Lack of quality bearings? Durability? Materials? Lack of rubber?

I bet a bicycle using 1700s tech would be horribly expensive considering the GDP per capita too. Not having rubber tires would make them dangerous as heck too. Traction is a huge factor in vehicles that aren't animal drawn. A horse/ox/human provides a ton of traction and stability to a vehicle when they pull it.