More ideas from Pat
http://www.velomobilforum.de/forum/index.php?attachments/fahrradanhaenger-1-jpg.3193/

http://www.velomobilforum.de/forum/index.php?attachments/fahrradanhaenger-1-jpg.3193/

2011-05-21-PrototypRingknoten

2011-05-21-PrototypRingknoten