In a few of the latest cars available, you can shift gears by simply pressing a button, turning a knob or toggling a little joystick. Yet at the same time, plenty of different automobiles still require motorists to use one foot for the clutch pedal and another for the gas, all when using one hand to control the gear-shift lever through a definite design of positions. And many other current cars don’t possess any traditional gears at all in their transmissions.
But regardless of whether a vehicle includes a fancy automatic, an old-college manual or a modern-day continually variable transmitting (CVT), each unit must do the same work: help transmit the engine’s result to the traveling wheels. It’s a complicated task that we’ll try to make a bit simpler today, starting with the fundamentals about why 
a transmitting is needed to begin with.
Let’s actually start with the typical internal combustion engine. As the fuel-air combination ignites in the cylinders, the pistons begin upgrading and down, and that movement is utilized to spin the car’s crankshaft. When the driver presses on the gas pedal, there’s more fuel to burn in the cylinders and the complete process moves quicker and faster.
What the Variable Speed Drive Motor transmission does is change the ratio between how fast the engine is spinning and how fast the driving wheels are moving. A lesser gear means optimum overall performance with the tires moving slower compared to the engine, while with a higher gear, optimum performance includes the wheels moving quicker.
With a manual transmission, gear shifting is handled by the driver via a gear selector. Many of today’s cars possess five or six forward gears, but you’ll find older models with anywhere from three to six forwards gears offered.
A clutch is utilized to transmit torque from a car’s engine to its manual transmitting. The various gears in a manual transmitting allow the car to visit at different speeds. Bigger gears offer plenty of torque but lower speeds, while smaller gears deliver much less torque and invite the car travel quicker.