image dej_2_4_3_001
Image number: RS.14085
Credit: ©The Royal Society

Photograph of one of David Jones' 'abnormal' bicycles




Unknown, Photographer

Object type

Archive reference number




height: 89mm
width: 122mm


Content object


Unknown rider riding an 'abnormal' bicycle, constructed as part of David Jones' research on bicycle stability. The rider lies on their front, head first and tilted upwards. Their torso is supported by a wooden board and the pedals are situated behind rather than below them. Camera height is slightly above the rider.

From the David Jones collection. Jones (1938-2017) was a research chemist and science writer. He was not a Fellow of the Royal Society.

Object history

In 1970 Jones wrote an article for 'Physics Today' in which he investigated the reasons for a bicyle's stability. In order to identify these reasons he constructed a series of abnormal bicycles which lacked certain features. This is one example, where Jones experimented with lowering the centre of gravity of the bicycle.

Associated place

<The World>
   > Europe
      > United Kingdom