Collaborate Disseminate
In the ebike world, there are two paths. The first is a homemade kit bike with motors and controllers from China. The second is a prebuilt bike from a manufacturer like Giant, with motors and controllers from China, which will be half as fast and cost three times as much. …read more
Sledding is a pastime often left to younger humans, though there is no good reason why this must be the case. [JoshXarles] is an adult with a strong enthusiasm for carving up the snow, and set out to build a high-performance sled this winter.
It’s a ski-based design, and [Josh]’s …read more
Continue reading A High Performance Ski-Sled For The Big Kids
We get all kinds of tips about “the world’s something-est” widget, which normally end up attracting the debunkers in droves. So normally, we shy away from making superlative claims about a project, no matter how they bill themselves. But we’re comfortable that this is the world’s smallest Tesla, at least …read more
Continue reading Fun-Size Tesla Might Be The World’s Smallest
Many of us will have experimented with brushless motors, and some of us will have built our own controllers rather than using an off-the-shelf part. Doing so is a good way to understand their operation, and thus to design better brushless motor powered projects. Few of us will have gone …read more
Rechargeable lithium chemistry battery cells found their mass market foothold in the field of personal electronics. The technology has since matured enough to be scaled up (in both physical size and production volume) to electric cars, making long range EVs far more economical than what was possible using earlier batteries. …read more
Continue reading The Quest To Find A Second Life For Electric Vehicle Batteries
If you are a college student and you get too many parking fines, you are going to get in trouble. But one school didn’t count on students hacking their high tech parking violation deterrent. Some even got free internet from the devices.
You pay your taxes or — in the …read more
Continue reading Students Use Low Tech Hacks on High Tech Parking Enforcer
For many people the gateway drug to aviation is radio-controlled aircraft, and in [Andre Bandarra]’s case this led to paragliding. Now he has combined the two, turning his full size paragliding wing into an RC aircraft. (Video, embedded below.)
The primary controls of a paraglider are very simple, consisting of …read more
Continue reading Floating On The Breeze With A Full Size RC Paraglider
One of the current hype trends is the supposedly imminent revolution in air transport. So many companies showing digital renderings and mockups to illustrate their own utopic vision for the future, reaching fevered pitch at events like CES 2020. But aviation has a long history of machinery that turned out …read more
Continue reading How Efficient Can An Airplane Be? The Celera 500L Sets To Find Out
When [Charlyn] took a unicorn rocking horse in to work, it was an instant hit. Naturally, the people wanted more, and suggested it needed electric propulsion. Naturally, she rose to the challenge, and Rocky the Unicorn got a motorized upgrade.
The build consists of a frame built out of PVC …read more
When you start sharing your projects with the world, you never know who might take notice. [Sterling Backus] and his son [Xander] have been building a functional Lamborghini Aventador look alike in their garage, and the real Lamborghini company caught wind of it and decided to turn it into an …read more
Continue reading DIY Lambo That Made The Real Lamborghini Take Notice