Raleigh Chopper response to the Schwinn Sting-Ray, and an earlier attempt, called the Rodeo, which was not commercially successful. The popularity of the Chopper also led to a range of smaller bikes following a similar design theme. These included the Raleigh Chipper, Tomahawk, Budgie and Chippy models, aimed at younger riders. The Chopper's patent was applied for in the US in 1967. The Chopper was introduced at American trade shows in January 1969 but it was not until April 1969 when Raleigh Choppers were available for public to purchase. The bike featured a choice of a single-speed coaster hub, or a 3-speed
Electric bicycle complicated but numerous 'replace a wheel' solutions are now available on the market. An Electric Pusher Trailer is an e-bike design which incorporates a motor and battery into a trailer that pushes any bicycle. One such trailer is the two-wheeled Ridekick. Other, rarer designs include that of a 'chopper' styled e-bike, which are designed as more of a 'fun' or 'novelty' e-bike than as a purposeful mobility aid or mode of transport. Electric cargo bikes allow the rider to carry large, heavy items which would be difficult to transport without electric power supplementing the human power input. Various designs (including