Just under 1,550 lbs. That's how much the Lotus Elise 340R weighs. That's because it has no roof or doors. It is bare-bones performance with a 190-hp 1.8-liter four-cylinder engine that revs to ...

A ball bearing linear stage in high vacuum is presented. Comparing with other vacuum compatible bearing this kind of stage shows simpler design, high stiffness and lower cost which is applicable in ...

In order to solve the existing problems in the design of the triangular track's load-bearing wheels, a finite element analysis and topology optimization method based on the analysis of typical working ...