Aeromodelling is a very beautiful and interesting hobby, but at the same time and time consuming. A long time is a training of improvised drones. Make them too easy. Why should only choose the necessary details!
Modelers in different disciplines often have to deal with the problem of determining the speed of rotation of the parts, screws, shafts, and even cassette recorders. That’s what the device advises to use well-known Polish engineer, Janusz Wojciechowski.
PROPOSED RC MODEL GLIDER WITH an ENGINE displacement of 2.5 CM3 model airplanes BUILT by the CZECH VLADIMIR BILY, IT MADE ABOUT 370 FLIGHTS (80 HOURS). THE MODEL IS EQUIPPED WITH DVUHKOMNATNAYA EQUIPMENT.