If you’re serious about lifting barbells, sooner or later you’re probably going to want a belt. Belts don’t prevent injury as people sometimes assume, but they do help you to lift more weight. This ...

Variable-pitch drives are the simplest of all mechanical adjustable-speed mechanisms. Most of these drives use rubber belts. However, chain types are unmatched in regard to its particular strong ...

Gears are the most rugged type of mechanical drive. They transmit power at up to 98% efficiencies and have long service lives. That’s why gears rather than belts or chains... March 13, 2017 Gears are ...