New Electric Motor Tech Spins With No Magnets

When you think of electric motors, you usually think of magnets. But magnets are heavy, and good magnets can pose problems when you need lots of them. A technology called SESM (separately excited s…

Hands-Free Compass Uses Haptic Feedback

If you’ve never experienced it before, getting turned around on a cloudy day in the woods or getting lost during an event like a snowstorm can be extremely disorienting and stressful — …

You Can 3D Print A 12,500 RPM Brushless Motor

Typically, when most of us need a motor, we jump online to order one from a catalogue. [Levi Janssen] recently had to build his own for a college project, however, and learned a lot along the way. …

What Makes Wedge Coils Better Than Round For PCB Motors?

PCB motors are useful things. With coils printed right on the board, you don’t need to worry about fussy winding jobs, and it’s possible to make very compact, self contained motors. [at…

Cart Cruises Abandoned California Rail

Southern California is known for its nearly perfect year-round climate, excellent surf, and extremely high cost of living, but once you get away from the coast things are radically different. Rural…

This Electric Outboard Conversion Makes For A Quiet Day On The Water

Nothing beats a day on the lake in a little boat with an outboard motor putt-putting along behind you. It’s great fun, if perhaps a little noisy with all that putting going on. And maybe that…

Wow! You Could Have A (Tiny) V8!

If you grew up before high gas prices and strict emission control regulations, you probably had — or wanted — a car with a V8 engine. An engineering masterpiece created in France, it wo…

Young Inventor Builds Motor Without Rare Earths

[Robert Sansone] is a 17-year-old from Florida and, like most of us, he likes to tinker. He’s apparently got the time for it because he’s completed at least 60 projects ranging from ani…

Atmospheric High-Voltage Motor Makes Useful Power

While it almost seems like an insane fever dream from an otherwise brilliant inventor, Nikola Tesla’s plan to harvest energy straight out of the atmosphere and essentially give it away is mor…

Gym Equipment Converted To Generator

Energy cannot be created or destroyed, but the most likely eventual conclusion of changing it from one form or another will be relatively useless heat. For those that workout with certain gym equip…

How Far Can You Push A £500 Small Electric Car; Four Years Of The Hacky Racer

Four years ago when the idea of a pandemic was something which only worried a few epidemiologists, a group of British hardware hackers and robotic combat enthusiasts came up with an idea. They woul…

Balancing A Motor With An Oscilloscope

With all things in life, one must seek to achieve balance. That may sound a little like New Age woo-woo, but if you think it’s not literally true, just try tolerating a washing machine with a…

E-Autos: So manipuliert euch ein Diesel-Verein mit Fake aus altem Nuhr-Zitat

Ein Diesel-Verein teilt ein drei Jahre altes Nuhr-Zitat mit großer Reichweite, das damals schon Unsinn war und schlecht gealtert ist. Der Faktencheck, wie widersprüchlich, falsch und naiv der Beitrag der Diesel-Freunde ist.

Hoverbike Turns Hoverboard Into Ebike

Hoverboards were a popular trend with the youths and in-crowd a few years ago, and now that the fad has largely died out there are plenty of them sitting unused in closets and basements around the …

Bike On Over To The Campground

Like many of us, [Paul] enjoys occasionally hitching up his tow-behind camper and heading out to the wilderness to get away from it all at his favorite campsite. Unlike the vast majority of those w…

Prototype Robot For Omniwheel Bicycle

For all its ability to advance modern society in basically every appreciable way, science still has yet to explain some seemingly basic concepts. One thing that still has a few holes in our underst…

Monowheel Mayhem: When Good Gyroscopic Precession Goes Bad

Since the dawn of the age of the automobile, motorheads have been obsessed with using as few wheels as possible. Not satisfied with the prospect of being incompletely maimed by a motorcycle, the mo…