We are producer of mounting kits for bicycles
We are producer of mounting kits for bicycles using 4-stroke Honda gas engines. We have developed modified crank mechanism which features possibility of use front and rear derailleur for gears shifting during engine drive and pedaling.
The essential shortcoming of engine drive for bicycles has been solved. It is very important for difficult off-road riding e.g. mountains, sandy terrain.
It is the only solution of motor drive, and it finds a lot of enthusiasts in Poland and in the World. This idea is patented, patent nr 199799.