Bike is the result of velocipede in 1817, and the credible reports of using pedal force traffic tool can be traced back to the 1860s.
Soon, the inventors began wondering how to get rid of one of the wheels. In 1869, four different kinds of vehicle appeared, one of which was the patented object of first unicycle.
In September 1932, J. A. Pruves driven a dynasphere unicycle, which looked like a giant tire. Mr Purves is the inventor of the vehicle.
Why do you want to build unicycle? Using a single wheel can improve the efficiency of transportation, reduce the volume, weight and resistance of the unicycle. However, there were many problems existed in the design, sight blocked, poor stability, not easy to control the direction, and so on. As the unicycle driver needs to rely on the gravity for upright, if it accelerates or decelerates too fast, the driver will be spinning in the wheel, like pet mouse.
In the traditional two wheels, a wheel provides propulsion and the other is responsible for controlling the direction. However, unicycle should consider two function. Whether using ramp, narrow wheel or gyro orientation device, they were tried by inventors. It needs skills in the unicycle to keep an upright position, so some unicycles use special wide wheels to help keep the balance.
In February 1935, the journal MECCANO said that due to the great benefits of the unicycle, it is likely to see that it is all unicycles running in the future highway.
In May 1932, Popular Science said that a 10 feet high unicycle driving on the highway in the UK, all passer-by motorcycle stopped and watched the odd traffic tool. Inside driver looked effortless, like a walking out on Sunday.
On February 8, 1932, people tested unicycle on the beach of Weston-Super-Mare, Somerset, UK.
On the beach, the unicycle on the right relied on petrol, and the smaller unicycle on the left was driven by electric. The inventor, J. A. Purves, hoped that the unicycle can lead a revolution of modern transportation.
In September 1932, a dynasphere was shown on the track, in Surrey, UK.
In 1932, the speed of dynasphere can reach 30 miles (48 kilometers).
In 1932, dynasphere was exhibited on Weybridge, Surrey.
On September 1, 1931, the Swiss engineer M Gerder, in Arles, France, was driving his unicycle to Spain.
In 1935, a man was on the bike which had a big front wheel and a small rear wheel, Walter Nilsson was in the unicycle.