One of the hottest topics in the transmission sphere is the debate over how many gears today's applications need. Is the traditional three, four, or six speed enough? What about these new units with as many as eight to ten gears? Are they really that much better? As the trends move toward more gears in traditional step applications, a different piece of technology is shaking things up: the continuously variable transmission (CVT) that virtually eliminates the need for a set number of gears.