Rotation Speed (Aviation Blog)

rotation speed

Flying planes, launching rockets, buying tech and driving a Leaf

Coolest Concept Bicycle Designs

This site USED to have some really cool design stuff, but the guy who designed them asked that they be removed.  Here is his actual site.  He's drawn some really cool bikes, which look great as concepts and actually look possible. It would be really fun to see them riding down the street near my house. Nice!  (Not nice that the original site used them without permission.)