An extending bicycle may not sound very exciting, but this group of tinkerers shows that building one is a lot more complicated than it sounds. To start, the electric bike relies on four custom-machined pneumatic pistons to lift the rider over 3-feet at the push of a button. The pistons up front double as the bicycle’s forks, while the other two are located between the frame and swingarm. Read more for a video and additional information.
Charging the small onboard compressor requires modified fire extinguishers, which are used to feed the pistons using pneumatic valves mounted on the handlebars. Do the wheels look familiar? That’s because they were salvaged old scooter, along with the brakes. Fortunately, no chain tensioners are required since the length between the crankset and rear wheel remain constant, even when the ride height changes.
- Lightweight step-through frame folds for easy storage; Folding frame with 20-inch wheels fit riders 56 to 74 inches tall
- 7-speed twist shifter provides smooth gear changes
- Front and rear linear pull brakes deliver secure stops
- Rear carrier includes detachable heavy gauge nylon bag for easy storage
- 20-inch alloy wheel with smooth rolling street tires are perfect for commuting
Finally, when the bike stands tall at its highest level is 1,85 tall and the head of the rider reaches the height of 2,80cm tall, which is a very high point compared to a normal bicycle. We are very satisfied with the great function of all the mechanisms of our bike as well as with the people’s smiles in the presence of this unusual construction!,” said its creators.