Sinclair Research worried that Clive Sinclair himself was using his own personal wealth to fund his inventions. By 1990 the company's entire staff had been reduced to just Sinclair himself, a salesman/administrator, and an R&D employee. By 1997 only Sinclair himself was working at his company. In 1992, the "Zike" electric bicycle was released, Sinclair's second attempt at changing people's means of transport. It had a maximum speed of , and was only available by mail order. Much like the C5, the "Zike" was a commercial failure, and sold only 2,000 units. In 1999 Sinclair released the world's smallest radio, in the
Sinclair Zike miniaturisation" but stated that "a quick test ride suggested the Zike is too unstable and lacking in power to make a cyclist feel secure on the nightmarish roads of London." Similarly Nik Berg for "Auto Express" noted that the Zike was lightweight and portable, but expressed concern about the lack of power and stated that "potholes should be avoided at all costs—the tiny wheels just get swallowed." Sinclair Zike The Zike, or Sinclair Zike, was a lightweight electric bicycle invented by Clive Sinclair and marketed by his company Sinclair Research Ltd in 1992. It was a commercial failure, selling only