The Note-So-Simple Side of Gear Ratios. But that's just the rear-axle ratio—we also have multiplication of engine torque by the transmission ratio to consider.

Gear ratios are easy to follow, once you have the basic formula understood. For example; if you have a 5.13:1 differential gearset, it means that for every 5.13 times the pinion rotates, the wheel ...

Simple. By multiplying engine torque by the gear ratios in the three gear sets, we can arrive at a crawl ratio. In equation form: In the equation above, ...

For example, using the equation rpm = mph x gear ratio x 336 x 1.00/tire diameter, a Drag Week car traveling at 80 mph on the freeway with an aggressive gear ratio like 4.88:1 on a 33-inch tire ...

Simple gear trains consist of two or three gears attached to separate shafts. ... This difference in speed is called the gear ratio. Figure caption, The diagram for a simple gear train.

Gear ratio restrictions, safety equipment and targeted events for this season were among the topics addressed in the first meeting in 2025 of the SafeR Supervisory Board, the body tasked with ...