When it comes to bringing an idea to life it’s best to have both a sense of purpose, and an eagerness to apply whatever is on hand in order to get results. YouTube’s favorite Ukrainians [KREOSAN] are chock full of both in their journey to create this incredible DIY e-bike using an angle grinder with a friction interface to the rear wheel, and a horrifying battery pack made of cells salvaged from what the subtitles describe as “defective smartphone charging cases”.
What’s great to see is the methodical approach taken to creating the bike. [KREOSAN] began with an experiment consisting of putting a shaft on the angle grinder and seeing whether a friction interface between that shaft and the tire could be used to move the rear wheel effectively. After tweaking the size of the shaft, a metal clamp was fashioned to attach the grinder to the bike. The first test run simply involved a long extension cord. From there, they go on to solve small problems encountered along the way and end up with a simple clutch system and speed control.
The end result appears to work very well, but the best part is the pure joy (and sometimes concern) evident in the face of the test driver as he reaches high speeds on a homemade bike with a camera taped to his chest. Video is embedded below.
Those fearless Ukrainians are at it again! This time around they’re giving wall outlets some high voltage stun gun shocks and observing the results, as [Kreosan] decided to see what would happen when you use a stun gun on mains electrical sockets. Surprisingly, they are still alive and well, and creating more videos. .
Shocking a light switch blew up some light bulbs, while shocking an extension cord with a TV plugged in blew the TV up. It seems these guys never run out of appliances to fry, or totally insane experiments to try out that no one else would really have the stomach for.
Although their experiments are on the extreme side of things they do know what they are doing, as they are electrical professionals, So maybe sit this one out unless you too really know what you are doing and understand the risks. The video is below the break for your enjoyment.
Using nothing more than an antenna, a spark plug, a flyback transformer, a diode, and a car phone charger, [Kreosan] have implemented the world’s most dangerous cell-phone charger: wirelessly charging their phone from high voltage power lines. This is a demonstration of a hack that we thought was just an urban legend, but it’s probably best to leave this as just a demo — this one is probably illegal and definitely dangerous.
The charger works by holding an old TV aerial fairly close to high voltage overhead cables, and passing the resulting tiny current through a spark plug and a flyback transformer to ground. To charge the phone, they tapped the transformer, rectified it through a diode, and fed it into a car-plug phone charger. [Kreosan] claims to harvest enough “free” electricity to charge the phone. (Where by “free”, we mean stolen from the electric grid.)
If you regularly find yourself running out of charge and like a bit of danger why not make a power bank that looks like a bomb instead. Sure we don’t advise you take it on a plane but it seems like a much safer option than using overhead power lines.
Our favorite Russian mad scientists, [Kreosan], have shocked us yet again with another terribly ill-advised, super bad idea. Home made EL wire that runs off of mains voltage.
From the picture it looks a lot like EL wire, doesn’t it? Well, it’s actually just a nickel chromium wire hooked up to the main AC supply in their…. uh, testing house? Doesn’t look like they live there, so we have to wonder why it still has power. Anyway, yeah, they made a restive load using the wire, and connected it directly to the panel. So besides the fire hazard, you could also get electrocuted!
For house decorations it’s a great way to warm the place up, and it might even help start a fire if you’re lucky!