Tech: Electric Scooter And How It Works

scooter
Photo Credit: popularmechanics.com

When the Razor scooter craze started in the early 2000s, the lightweight, foldable scooters were mostly just for kids. But the design has proved enduring, even for adults, because it offers some of the efficiency of biking while being easier to stow.

And perhaps because the technology has improved: Back when the scooters debuted, acceleration assistance meant looping your dog’s leash over the handlebars and chucking a tennis ball.

Today you can get the eMicro One, which uses an electric motor to lift some of the burden from your kicking leg. Like pedal-assist e-bikes, it manages the trick of making a ride easier without changing the experience.

The Standard Part

The front part of the eMicro One is exactly like a standard kick scooter. At the top, the left and right handles (1) clamp to the upper vertical tube (3), which telescopes from the lower vertical tube (4) to match the height of the rider. The other end of the lower tube holds the front fork (2) and front wheel (5), which has a hard outer shell of rubber and a core made of the same kind of foam used in running shoes for a comfortable ride. The front tube passes through the head tube (6), which acts as a collar that allows it to pivot freely, so the rider can steer. The head tube bolts to the folding mechanism (7): A quick release (8) frees a pin to slide over a groove, so the front tube can fold and lock into place parallel to the foot-board (9) for stowage on the go.

ALSO READ: Tech: Surgeons’ workload Assuaged By New Surgery Base Robot

The Electric Part

The foot-board is milled from one piece of aluminum, like a MacBook. And like a MacBook, it contains a lithium-ion battery (12) and a logic board (11). The logic board governs the electric motor (13) housed in the polyurethane rear wheel (14). As the motor uses energy, the level of charge in the battery is indicated by four LEDs embedded in the foot-board.

To counteract the drain, regenerative braking capability is integrated into the spoon brake (16) above the back wheel: To slow, the rider pushes the brake down with her rear foot. It contains a magnet (15); a sensor in the wheel assembly detects the magnet and reverses the motor so it operates as a generator—which not only recharges the battery but also creates resistance, helping to further slow the scooter.

The Intelligent Part

The scooter doesn’t have a throttle grip built into the handlebar, or a foot pedal. Instead, the rider’s foot is the throttle. A sensor (10) monitors the speed of the rear wheel. When the scooter’s software detects a sudden acceleration—the kind that could only come from a kick, as opposed to, say, the slow gain in speed from rolling down a steep hill—it engages the motor to provide assistance.

STAY CONNECTED: Read more news on Surge.n mobile app

If there is a bigger sudden acceleration, which indicates a stronger kick (and therefore a rider who wants more speed more quickly), the motor offers greater assistance. Either way, to the person aboard, it still feels like being on a scooter—less like a motorized vehicle than like the subtle nudge of a friendly tailwind.

Number of parts: 180

Model: eMicro one

Produced: Guangdong, China

Time to disassemble: 2 hours, 14 minutes

 

Adapted from popularmechanics.com

Surge It

1 COMMENT

LEAVE A REPLY

Please enter your comment!
Please enter your name here

This site uses Akismet to reduce spam. Learn how your comment data is processed.