Gears and Differential Explained

One could argue that the differential in your axle is the most important piece of machinery in your vehicle. The differential is what allows you to go around a corner, and changes the direction of power being produced by the engine to drive the axles. This same differential can house lockers and limited slips as well, which are regarded as the holy grail of traction aids in the off-road world.

Originally, vehicles’ differentials were straight cut ring and pinions, with essentially a welded carrier. There were no spider gears and the pinion drove the ring gear — that was it. Both axles were locked together at the carrier and going around corners was quite the chore with no power steering.

Web Campaign

As automotive technology advanced, spider gears were introduced into the differential carrier. These spider gears allowed the left and right axle shafts to move independently of each other, and subsequently reduce wear and effort needed to go around corners. This also had the added benefit of reducing the vehicle’s turning radius, as only one wheel was being driven and the opposite side was free to move, however, the movement dictated it.

But how does this black magic work? Thankfully to the wonders of 1930s General Motors, we have one of the greatest feats of art and technology at work for you — the educational film. Bring on the nostalgia and learn a thing or two about gears and the differential.

Web Campaign

You May Also Like

Step-by-Step Guide to Installing Wilwood AERO6-DM Brake Kits

Installing AERO6-DM Direct-Mount Front Brake Kits from Wilwood When truck enthusiasts hear the term “bolt-on” or “easy installation,” many will roll their eyes and may […]

Traction Aid: Your Guide to Lockers, Limited Slip Differentials, and Spools

The first automakers had a lot of things to figure out, such as, how to get the engine’s power to the wheels. It was found […]

Healthy Eating Camp Hacks

Tips From Two Camping Experts on Making Healthy Eating a Priority For years, my outdoor culinary repertoire was limited to opening a can of beans. […]

Avoid Heat Illness While Outdoors

Heat-Related Ailments, Illnesses, & Remedies Human beings have survived in hot climates since the dawn of time.  If we follow the basic rules, it’s quite […]