Category Archives: esc

Can You 3D-Print a Stator for a Brushless DC Motor?

Betteridge’s Law holds that any headline that ends in a question mark can be answered with a “No.” We’re not sure that [Mr. Betteridge] was exactly correct, though, since 3D-printed stators can work successfully for BLDC motors, for certain values of success.

It’s not that [GreatScott!] isn’t aware that 3D-printed motors are a thing; after all, the video below mentions the giant Halbach array motor we featured some time ago. But part of advancing the state of the art is to replicate someone else’s results, so that’s essentially what [Scott!] attempted to do here. It also builds on his recent …read more

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Posted in BLDC, brushless, eddy currents, esc, halbach, misc hacks, permittivity, Proto-Pasta, rotor, stator, torque | Leave a comment

Plug Your Ears And Hop On This Jet-Powered eBike

Ah, the simple pleasures of a bike ride. The rush of the wind past your ears, the gentle click of the derailleurs as you change gears, the malignant whine of the dual electric jet turbines pushing you along. Wait, what?

Yes, it’s a jet bike, and its construction was strictly a case of “Why not?” for [Tech Ingredients]. They recently finished up a jet engine build using a hybrid design with electric ducted fans as compressors and fueled with propane. It was quite a success, and pretty spectacular, but left an embarrassment of riches upon its passing in terms of …read more

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Posted in 12s, Ducted Fan, ebike, EDF, esc, jet engine, lipo, transportation hacks | Leave a comment

Tilt-Rotor Plane Needs Flight Controller Hack to Get Airborne

Part of the charm of quadcopters is the challenge that building and flying them presents. In need of complex sensors and computational power to just get off the ground and under tremendous stresses thanks to their massively powerful motors, they often seem only barely controlled in flight. Despite these challenges, quadcopter flight has been reduced to practice in many ways, leaving hobbyists in search of another challenge.

[Tom Stanton] is scratching his creative itch with this radio-controlled tilt-rotor airplane that presents some unique problems and opportunities. Tilt-rotor planes are, as the name implies, able to swivel their propellors and transition …read more

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Posted in ailerons, BLDC, drone hacks, elevators, esc, flightnav, quadcopter, rc, servo, tilt rotor, vtol | Leave a comment

Building an Electric Scooter That’s Street Legal, Even in Germany

Sometimes a successful project isn’t only about making sure all the electrons are in the right place at the right time, or building something that won’t collapse under its own weight. A lot of projects involve a fair amount of social engineering to be counted as a success, especially those that might result in arrest and incarceration if built as originally planned. Such projects are often referred to as “the fun ones.”

For the past few months, we’ve been following [Bitluni]’s DIY electric scooter build, which had been following the usual trajectory for these things – take a stock unpowered …read more

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Posted in accelerometer, arduino, Assist, BLDC, boost, esc, gyro, hub motor, mpu6050, scooter, transportation hacks | Leave a comment

3D Printed RC Jet Boat Gets Up To Speed

In one of those weird twists of fate, there’s currently a very high chance that anyone who owns a 3D printer has made a boat with it. In fact, they’ve probably printed several of them, so many that they might even have a shelf filled with little boats in different colors and sizes. That’s because it’s a popular benchmark to make sure the printer is well calibrated. But if you’re going to spend hours printing out a boat, why not print one that’s got some punch?

This 3D printable jet boat designed by [Jotham B] probably isn’t a great print …read more

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Posted in Benchy, brushless motor, esc, rc boat, toy hacks | Leave a comment