9:07 PM

Mono

One_wheel_motorcycle_Goventosa
 
Pictured is Mr Gerdes riding his Mono-Wheel motorcycle.  I’ve always wondered why no one has tried to make one of these but in human-power form.  Apparently there have been tons of tries since the turn of the century.  I guess just like their motor powered version the mono wheel never caught on. 
 
1stmonocycle jackson2a
french1a sociable1b
venable1a oct1881a
 
http://www.aqpl43.dsl.pipex.com/MUSEUM/TRANSPORT/motorwhl/motorwhl.htm#hemming