In the patent, Stellantis engineers suggest that the main gear would have a 1:1 ratio, while the low range would be 4:1. That ...

The death of the conventional gearbox wasn’t a murder – it was a mercy killing. The advent of the modern electric vehicle has ...

From a load-capacity point of view, the most suitable gearhead ratio has the highest torque density for the most compact (and cost-effective) package. From an application point of view, the best ...

Some of our favorite sports machines of the last few years manage to use electric motors to enhance the powertrain experience ...

For 11 years now, German company Pinion's sealed mid-mount gearbox has offered a tougher alternative to derailleurs. It's now been combined with a motor, resulting in a two-in-one ebike module called ...

We need to choose the correct gear for our particular racing and track configuration, and we need to maintain that overall ratio when we make changes. Finding the right gear ratio for a particular ...

If you run your variable frequency drives at 60 Hz and below, you are not alone. Nearly all the VFDs in North America operate below this nominal frequency threshold. Yet a growing number of ...

What if-and believe me, this is a hypothetical-you were trying to put a wild, rare, 200-hp naturally aspirated Autech SR20DE from the hottest of the nonturbo S15 Silvias into a first-generation Miata, ...

A noted and experienced motorsport engineer expressed shock today following the big screen discovery of a hitherto unknown gear ratio capable of overtaking every single car on track in a single lap.

For part two of our series about transforming Jared Lehenbauer’s new-to-him ’01 Ford F-250 into a truck that’s better suited to his needs, we’re detailing how to select the correct gear ratio for two- ...

Small DC motors are easy to find — you can harvest dozens from old printers and copiers. You might even get a few with decent gearboxes too. But will you get exactly the motor with exactly the gearing ...

Many ebikes sport a derailleur hanging out back to giver riders more flexibility than single-speeders. There are exceptions that combine gears with the motor, such as Pinion and Valeo. And now there's ...