Electric motors use electromagnetic force to produce movement. Magnetic forces — attraction and repulsion — cause the electromagnet inside an electric motor to spin.

This electric bike is shaft-driven. Moreover, it’s assisted by an oversized rear hub that cleverly conceals a 250W motor; sensors to measure torque, slope, and cadence; controller; Bluetooth ...

Machinery manufacturers often use electrically insulated couplings in their equipment to prevent arcing across bearings and other components, Figure 1. The arcs result from electric motor shaft ...

GoBoat currently offers three versions of the world’s most portable electric boat. The mini, for small adults and kids, has a 55-inch diameter, while the adult model extends to a 70-inch diameter.

O.G. Schmidt invented the electric trolling motor in 1934 when he attached the starter motor from a Model A Ford to a flexible shaft with a propeller on the end. A fanatical angler, Schmidt used the ...

British electric vehicle technology brand Donut Lab has a new EV motor deliciously named the “Donut Motor,” and it packs 856 horsepower. Even better, it weighs just 88 pounds.

It has been a long haul, but I finally have the motor in my ’67 Beetle EV conversion. I’ve had one setback after another, but I expected it to be the most technically challenging part of the ...

Positioned in the aft cockpit, the engine featured a direct drive to a horizontal prop shaft. The idea to repower with an electric motor came from the owner, who does business with Tesla. “He wondered ...

Most internal combustion engines have a maximum of about 6,000 rpm. But an automobile's electric motor might spin as fast as 9,000 rpm. Nitz said that speed presents engineering challenges.

Donut's 150 kW, 17-inch motorcycle motor is already in use on the road for a few boutique electric bikes, so the odds of seeing this tech on a car in the future is better than you might think.