DESIGN DETAILS

Bicycles should not be complicated, they should be ridden, not constantly in the shop. We have adapted 'stable' future-proof bicycle standards, choosing the best high-tech options without losing the reliability of low-tech components. This means that your bike is repairable and adaptable.

OLSEN frames were designed around these 4 areas:

Dropouts: RocknRollout dropouts allows the frame to do 3 things:

  • the rear hanger to be replaced if a derailleur is damaged. 
  • splits the frame for belt drive.
  • adjusts the wheelbase for belt/chain tensioning.
  • Dropper posts: 30.9mm dropper posts have changed the way that trail MTN bikes get used and geometries have got longer in the top tube as a consequence.
    Headsets: SHIS 44/44 has become a "standard" - so lets keep things simple. This is simple and allows for Tapered Carbon fork steerers with ZS44/EC44 and is backward compatible with straight steerers with either a crown reducer or a ZS44/ZS44 headset. 
    T47x92mm BB: I chose T47 as it resolves issues with PF92.   A 92mm shell allows the chainstays to be wider, providing more tyre clearance.  92mm also means that the chainstays can be welded wider on the frame, making the bottom braket area stiffer for belt drive use.  I know this might look like another bottom bracket standard, however this is versatile and backward compatible.  FSA and others do adaptors with their versions of T47 and it is available in SRAMs DUB. Wheels MFG do a T47x24mm INBOARD BB which works with Shimano and Middleburn chainsets.