OUR n-1 CONCEPT: Weather-proof Engineering. DESIGNED & MADE IN SUSSEX..

We have a one tool and one design but that does not limit us to one bike.  This is a rethink on how bikes are manufactured without big brand marketing.  A bike is a bike and we should all remember what has been ridden in the past - before marketing.  Tour de France was ridden on gravel roads on fixed gears until after WW2.  Mountain bikes had a total 1 inch front suspension for XC and DH in the 1990's.  John Tomac won both DH and XC on the same bike.  With respect we are not all Sam Hill.

This bike will run derailleur, however it has been designed to accommodate the Pinion gearbox and Gates Carbon Drive.  This means that you can change your drive system without changing your frame.  The derailleur drivetrain was invented in 1928 and works perfectly fine for road bikes where precision shifting is not impaired by mud sand and more mud.  A lot of design and engineering has gone into improving the rear derailleur, but this system is still exposed to the elements and mud. The derailleur has become the mechanical Achilles heel when long distances and trail conditions turn bad. 

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Gearboxes have more long-term benefits for mountain biking than an exposed rear derailleur system. Years of maintenance free cycling. 10000 quiet belt drive miles.  At Olsen Bicycles, I have designed a frame around the Pinion gearbox based on UK hardtail geometry. With the Pinion gearbox and Gates Carbon-drive belts, this frame has both low maintenance and ride versatility. 

OLSEN BICYCLES offers a semi-custom geometry tailored precisely to the customer.  OLSEN Carbon frames are monocoque and are all hand laid.   Each frame uses a combination of 3K weave & UD Carbon laid into a tool.   I offer advice on geometry options to suit your forks and type of riding that you do. 


My concept was to create a versatile frame that could be built into many different bikes.  Options options...what to design... how to combine everything and get something??  There are several points on a bicycle that needed to be changed to accommodate different fork geometries. Forks and tyre choices have changed over the decades.  Long travel forks with 120-150mm travel suiting slack head angles and short chainstays.  100mm short travel or Rigid forks suiting steeper head angles and longer chainstays for Bikepacking adventures.  29 & 27.5" tyres have relegated 26inch tyres to being fat.  There have been some good developments, like the clipless pedal and the dropper post.  And tapered headsets have helped the bottom bearings last more than a few seasons....

So to combine it all....