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A-bike folded

The A-bike is a folding bicycle invented by Sir Clive Sinclair in the United Kingdom and released on 12 July 2006. It weighs 5.5 kilograms (12 lb) and folds to 67×30×16 centimetres (26.4×11.8×6.3 in), small enough to fit in a rucksack.

The A-bike was designed by a team at Daka International Ltd, in Hong Kong, and Sinclair Research over 5 years. It was announced to the public in 2004. Clive Sinclair envisioned the A-bike, and Alex Kalogroulis was the main design engineer.


The A-bike's telescoping structure reduces its apparent volume to about 25% in its collapsed state. A twin-chain system enables the bike to travel about 3.2 metres (10.5 ft) per crank rotation despite the bicycle's small-diameter wheels (6 inches or 15 centimetres). The crankcase housing almost completely encloses the drive mechanism, protecting it and preventing oil stains on clothing or floor surfaces.

Small-diameter wheels may not be able to traverse uneven terrain, so the slightest imperfection in the intended path may interrupt progress, even on paved surfaces.

Media appearances[edit]

In November 2006, A-bike was featured on UK television programme The Gadget Show, alongside the Strida.[1] The distribution company behind the A-bike was featured on the UK Television programme Badger or Bust broadcast on the 5 June 2007. In the Top Gear epic race Car vs. Train 2. Richard Hammond and James May carried A-bikes in their suitcases and unfolded them to bike from a ferry dock to a cable car. The magazine A to B described the A-bike as a "fabulous folder, but almost unrideable".[2]

Electric version[edit]

In 2015, an electric version, the A-Bike Electric, was introduced to the public as part of a Kickstarter campaign. The design featured eight-inch wheels (as opposed to 6-inch wheels on the original bike, as well as a larger seat and sturdier frame.[3] The funding campaign was successful and production was expected to begin before the end of the year.[4]


  1. ^ A-Bike & Strida Folding Bikes Tested - YouTube
  2. ^ "Folding Bikes. A Buyers' Guide.". A to B magazine 55. August 2006. Retrieved 2008-10-30. 
  3. ^ Lloyd Alter (July 21, 2015), "A-Bike Electric is the smallest lightest folding e-bike ever," Treehugger. accessed September 10, 2015
  4. ^ Kickstarter

See also[edit]

External links[edit]