For the N-3 we have chosen the Salsa Alternator Dropouts to make a very versatile frame. The N-3 Concept is 3 bikes in one. Fixed, Single-speed, hub gear and of course derailleur if you must... The world can change fast, with 3D printing and exotic materials. This is a rethink on how bikes are manufactured without big brand marketing, without expensive tooling and without boundaries.
OLSEN Bicycles has designed the following options:
Chainstays that will fit up to 2.2inch tyres.
SALSA Alternator Dropouts - for 142 maxle or 135mm hubs
Tapered intergrated headset
Integral Cabling for Dropper posts