bicycle
As a two-wheeler is usually a vehicle with two wheels , in a track running behind each other, respectively. The single-track two-wheeler principle was invented by Karl Drais in 1817 and known with the so-called running machine or draisine .
technology
The possibility of driving a single-track vehicle stably in the vertical axis without support wheels or other aids is based on a dynamic equilibrium (see dynamics of cycling ). Stabilization is no longer available at a standstill.
Two-wheelers can e.g. B. be driven by muscle power , motors or potential energy (downhill). A combination of muscle and motor power is found in bicycles with an auxiliary motor , mopeds, electric bicycles and pedelecs .
According to German road traffic law - despite a third wheel - motorcycles with sidecars are also considered to be single-track.
variants
With muscle power
- bicycle
- Running machine (impeller)
- scooter
Motorized
- moped
- Moped (moped, Mokick)
- Light motorcycle
- Scooter
- motorcycle
Two-lane two-wheelers
- Self-balancing scooters like the Segway Personal Transporter
Other two-wheeled vehicles
- Waveboards have two wheels, one under each of the two halves of the board connected with a torsion joint
- Roller vehicles with only two rollers
Vehicles or devices with two wheels that can only be used with an additional support element also do not count as two-wheelers in the narrower sense:
- Sulky
- Horse carts
- Handcart
- pendant
- Trolley
- Inline skates with only two wheels
- two-wheeled walking stick
- Trolley
