This thesis deals with rebuilding of combustion engine powered go-kart for rent to electric powered go-kart. Main goal of work is choose fitting electric engine and electric accessories for reliable working of electric go-kart, put the whole electric drive to rear construction of go-kart and check mechanical part of electric drive.

Diploma thesis deals with design of a flywheel and a belt pulley of single toggle jaw crusher DCJ 900x600. The first part is dedicated to overview of the methods for calculation of a size of flywheels for working machines. The second part is focused on calculation of a size of the flywheel. The third part treats the constructional design of the flywheel. In the last two parts there is elaborated analysis of a changing size of the flywheel depended on increasing the working rotation speed and change of coefficient .

This master´s thesis focuses on the basic principles of the nonconventional technology of electrical discharge machining (EDM) with an emphasis on wire-cut electrical discharge machining performed in a mediumsized company. The thesis deals with manufacture of a belt pulley 75-8M-130, and checks of accuracy of wire-cut EDM machines. Following the study of the current status of electrical discharge machining in the engineering company, measures for assurance and increase of accuracy of wire-cut EDM machines are proposed.