“Ancestor” of this machine, lawn mower GK-1 was built by students in St Michael’s training and production plant in 1978. About it has told the head of young technicians — lecturer of the criminal procedure code V. I. Popov (see “M-K” № 6, 1981). However, the possibility that the mower was still insufficient: the width was only 1 m and the actuator will bind the mechanism to a power source and thereby limiting its autonomy. This was the reason for making a new variant with high performance. The novelty was successful. Among the exhibits of the III all-Russian rally labor unions of students in urban schools, held in Rostov-on-don, she invariably attracted attention and was awarded by our magazine (see “M-K” N° 1, 1985). By the way, after this publication in the code of criminal procedure, Michael began to come from all over the country a letter asking them to send drawings of the mower. To answer each individually the authors, of course, was not. Today we provide the pages of the magazine mentor young designers of this machine.
This mower was preceded by years of testing machines of various schemes. Among them were options driven by the ground wheels from the internal combustion engine using a homemade worm gearbox (gear ratio 1 : 25), with a different arrangement of the knife. But they did not meet our requirements, as it came out bulky, not sufficiently flexible and unreliable. And then came the idea to give up the drive to the wheels and placing the knife on the side. This dramatically reduced the size of the device and allowed to increase the width of the grip. The center of gravity we calculated so that the working body is raised and lowered very easily and this gives the opportunity to mow the grass on uneven terrain. Increased maneuverability of the unit. So that the selected scheme is optimal.