Sinclair Zike maximum speed of the bicycle operating under its own power was kept below 15 miles per hour to prevent it being classified as a motorcycle under UK law. The Sinclair Zike was developed by Sir Clive Sinclair following the commercial failure of the Sinclair C5 in 1985. Electric vehicles were one of his long-term research ambitions. The Zike was financed largely with his own money, and the manufacture was subcontracted to Tudor Webasto, a Birmingham-based company. The Zike was launched on 5 March 1992 at the Cyclex exhibition in Olympia, London, when a prototype was demonstrated to both press and
Sinclair Radionics Sinclair Radionics Sinclair Radionics Ltd was a company founded by Sir Clive Sinclair in Cambridge, England which developed hi-fi products, radios, calculators and scientific instruments. After raising funds to start the business by writing articles for "Practical Wireless" magazine, and borrowing £50, Clive Sinclair founded Sinclair Radionics Ltd. on 25 July 1961. Sinclair initially worked alone in the evenings out of a room in London (he was still a technical journalist during the day), selling radio kits by mail order. Radionics initially developed hi-fi equipment; it released its first product, the Sinclair Micro-amplifier, in December 1962. The assembly and distribution