
Drilling steel mechanical hand drill even in the upright position without special tools is not easy: need and pressure to create, and perpendicular to endure. What if you set one of the axes of a two speed drill heavy flywheel? Here, the gyroscopic effect will get, and the increased mass with the increase in pressure on the drill. To fix it everyone will be able on its own.
Recommend to read
Aero L-29 Delfin (Czech Republic)
The development of L-29 was started in 1955, took the initiative by a group of engineers from the Research and test flight Institute of Czechoslovakia. First flight of L-29 made the...
GAZ-12 “ZIM”
Executive car GAZ-12 "ZIM" was intended for managers of the second echelon of state power (Ministers, secretaries of regional committees, chairmen of Executive committees, etc.) and had...