This ‘E-catalogue’ shows rather notchy CAD drawings of two derailleur systems, a 12 speed road system (page 13) and an 11 speed mountain bike system (page 14). The operation of these derailleurs is described in Taiwanese Patent # 201307151. Even if you do not read Chinese, you can learn a lot from the drawings!

• Publisher: KCNC
• Country: Taiwan
• Date: 2012
• Derailleur brands: KCNC
• Derailleurs: KCNC 12S RD System, KCNC 11S MTB System