Author: admin

While developing my latest prototype Avial Commuter e-Bike [1] with 250 to 1000W rear hub-drive, whose frame design also allows for chain and belt use in the drivetrain, I have decided to investigate the capabilities of different gear systems for bicycles. Why? The first factor is that common rear-wheel drive multipurpose bicycles for city and country use usually include the installation of a standard kit, for example, the Shimano Alivio 8-speed chain transmission system. It’s inexpensive, reliable, easy-to-use as well…

The popularity of welded bicycle framing is not decisive. Many titanium, steel, or aluminum frame manufacturers use alternate connections, which in many cases not only enhance the bicycle’s consumer qualities, but they also make it simpler and cheaper to produce. In spite of numerous innovations, basic frame design of the classical bicycle has changed little since the chain-driven version appeared around 1885 [1]. The first vehicle, however, was invented by the German Baron Karl von Drais in 1817 and was…

Since its introduction in 1894, bamboo cycles have been continually changed and have become increasingly sophisticated and appealing. Despite all their advantages and current innovations, many of them have not gained the same universal popularity as their steel, aluminum or carbon frame counterparts. Some of the first references to the bamboo bicycle may be found in English patent No. 8274, filed in 1894 [1]. The unusual nature of such bicycles stems from the idea that the carrier tubes of the…