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.

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.

You May Also Like

Running Away

It’s commonly assumed that a diesel engine works, in principle, the same as a gasoline engine, but when you hear of a diesel engine runaway, […]

Practice Good Public Stewardship of Public Lands

Backcountry Conservation For those of us who reside on the West Coast, we’ve been blessed with access to thousands of miles of backcountry two-tracks through […]

Upgrading Stability: Belltech's 2024 Land Cruiser Rear Anti-Sway Bar

We Add Belltech’s Newest Release for 2024 Land Cruisers Belltech’s first release for the 2024 Land Cruiser will be this rear anti-sway bar. Belltech sway […]

How To Travel Light: The One-Bag Traveler Approach

One-Bag Travel May Be the Key Element to Keeping Your Trip Smooth, Efficient, and Misery-Free For a growing number of travelers, the carry-on bag has […]