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
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
Once a program has been debugged and works properly, it might be time to start optimizing it. A common way of doing this is a method called profiling – watching a program execute and counting the amount of computing time each step in the program takes. This is all well …read more
Continue reading Where The Work Is Really Done – Casual Profiling
Once a year, the Delsbo Electric contest in Sweden challenges students to create and improve on the world’s most energy-efficient vehicles. This year’s champ, the Eximus IV, smashed the competition and all previous records with an electric equivalent of 687 MPGe (0.34 l/100km).
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Continue Reading Eximus IV claims world’s most energy efficient vehicle title
Category: Urban Transport
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Continue reading Eximus IV claims world's most energy efficient vehicle title
It’s been forty years since the infamous Three Mile Island accident, an incident made famous bythe confusion and panic it spawned in its wake. But while the incident is remembered for the fear it stoked about nuclear energy, it also set the stage… Continue reading The Nuclear Industry and Communication: Lessons from Three Mile Island
While we often think we are clever designers, living things often meet or beat the best human designs. It is easy to forget that nature even has living lightbulbs, among them the firefly. Researchers from Penn State decided to compare how fireflies create light and found that they deal with …read more
Continue reading Tech Imitates Life: Fireflies Make Better Light Bulbs
The changing IT landscape is driving new initiatives and focus for IT organizations. One area that is foundational for an organization is their identity management strategy. In this post, we discuss why cloud directory services should be a priority in … Continue reading Cloud Directory Services Should be a Priority
We often hear the phrase, “Work on what is important, not necessarily urgent.” IT organizations know this axiom all too well. In a business that is highly interruption driven and reactive, IT admins are craving a better way to control their… Continue reading The Foundation of IT: The Identity Provider
Building your own Halbach-effect brushless DC motor is one thing. Making sure it won’t blow up in your face another matter, and watching how [Christoph Laimer] puts his motor to the test is instructive.
You’ll remember [Christoph]’s giant 3D-printed BLDC motor from a recent post where he gave the motor a quick test spin. That the motor held together under load despite not being balanced is a testament to the quality of his design and the quality of the prints. But not wishing to tempt fate, and having made a few design changes, [Christoph] wisely chose to perform a static …read more
Continue reading 3D-Printed Halbach Motor Part Two: Tuning, Testing