Analysis of information sources in references of the Wikipedia article "Raleigh Chopper" in English language version.
Designed in the late 1960s by Raleigh employee Alan Oakley, [although some contest it was the work of Tom Karen of the Ogle]
Dr Karen's claim is backed by the Design Council, which gave Dr Karen a special commendation in 2002 for his lifetime achievements, including the Chopper.
Initial designs for the Chopper are sketched on the back of an envelope by designer Alan Oakley while returning from a research trip to America
Despite some controversy over the original designer – Raleigh's chief designer at the time was Alan Oakley, though inventor Tom Karen is reported to claim credit for the prototype
Dr Karen's claim is backed by the Design Council, which gave Dr Karen a special commendation in 2002 for his lifetime achievements, including the Chopper.
