[Nick Thatcher] is a serial builder of self-balancing rides. His various Segway clones and unicycles have until now suffered from one significant problem, that of portability when not being ridden. Taking one on a train was a significant undertaking, hardly convenient in a personal transport machine.
His latest design, the Plan-B, is an electric unicycle designed to address this problem to create a truly portable piece of commuter transport. It has been designed to be as compact as possible with the ability to fold to fit in a confined space, and the weight has been reduced to a minimum.
Power comes from a 24V 350W geared motor kept on a leash through a Dimension Engineering motor controller by an Arduino with a gyro to maintain the unit’s stability The battery is an ULTRAMAX LiFePO4 , and the single wheel is an inexpensive plastic wheelbarrow part with chain drive from the motor.
The result is both rideable and portable, though with a 10mph top speed not the fastest of personal transport. He’s posted a video which you can see below the break, showing him taking it on a train journey and traversing the British urban landscape.
Continue reading “[Nick Thatcher]’s Plan-B Is A Commuter Electric Unicycle”
If you’re anything like us, chances are pretty good you’ve got at least one underused piece of fitness gear cluttering up your place. Rather than admit defeat on that New Year’s Resolution purchase, why not harvest the guts and build an all-terrain hoverboard for a little outdoor fun?
The fitness machine in question for [MakeItExtreme]’s build was a discarded Crazy Fit vibration platform. We’re not sure we see the fitness benefits of the original machine, but there’s no doubt it yielded plenty of goodies. The motor and drive belt look stout, and the control board eventually made it into the hoverboard too. The custom steel frame was fabricated using some of [MakeItExtreme]’s DIY tools, which is what we’re used to seeing them build — check out their sand blaster and spot welder for examples. A couple of knobby tires in the center of the board let the rider balance (there’s no gyro in this version) and power is provided by a couple of 12 volt AGM batteries. Sadly, the motor was a line voltage unit, so an inverter was needed. But it was the only part that had to be purchased, making this a pretty complete junk pile build.
See the video after the break for build details and a few test rides. Looks like it can do 20 mph or so – pretty impressive.
Continue reading “All-terrain Hoverboard Junk Pile Build”
Actually riding around at 30 km/h on a 3D printed means of transportation is pretty gnarly, if not foolhardy. So we were actually pleased when we dug deeper and discovered that [E-Mat]’s unicycle build is actually just a very nice cover and battery holder.
We say “just”, but a 3D-printed design takes a couple of cheap parts (the wheel and pedals) from the Far East and turns them into a very finished-looking finished product. Custom bits like this fulfill the 3D printing dream — nobody’s making it, so you make it yourself. And make it look pro.
It turns out that other people have noticed this motor/controller/pedal combo as well. Here’s some documentation to get you started.
It’s funny. Just four years ago, self-balancing powered unicycles were the realm of the insane hacker. Then came some hacker improvements, and now we’re at the point where you can mail-order all the parts and 3D print yourself a fancy enclosure.
Continue reading “3D Printed Electric Unicycle”
Omnidirectional wheels are one of the hardy perennials of the world of invention. There seems to be something about the prospect of effortless parallel parking that sets the creative juices of backyard inventors flowing, and the result over the years have been a succession of impressively engineered ways to move a car sideways.
The latest one to come our way is courtesy of Canadian inventor [William Liddiard], and it is worthy of a second look because it does not come with some of the mechanical complexity associated with other omnidirectional wheel designs. [Liddiard]’s design uses a one-piece tyre in the form of a flexible torus with a set of rollers inside it which sits on a wheel fitted with a set of motorised rollers around its circumference. The entire tyre can be rotated round its toroidal axis, resulting in a tread which can move sideways with respect to the wheel.
The entire process is demonstrated in a video which is shown below the break, and the small Toyota used as a demonstration vehicle can move sideways and spin with ease. We would be wary of using these wheels on a road car until they can be demonstrated to match a traditional tyre in terms of sideways stability when they are not in their omnidirectional mode, but we can instantly see that they would be a significant help to operators of industrial machines such as forklifts in confined spaces.
Continue reading “Liddiard Omnidirectional Wheels”
The gist of the idea is to suspend an underwater tunnel from floating pontoons. By the time you finished reading that sentence, you probably already had a list of things in your head that seem to make this a terrible idea. After all, it does seem to combine the worst aspects of both underwater tunnels and bridges. But, the idea may actually be a good one, and it’s already being seriously considered in Norway.
Continue reading “It’s Not a Bridge, and Not a Tunnel. Or, Maybe it’s Both?”
The modern motorcycle represents the pinnacle of over a century of refinement in design and manufacture of its every component. A modest outlay will secure you a machine capable of three figure speeds with impeccable handling, breathtaking acceleration and stopping power, that somehow seems also to possess bulletproof reliability that will take it to a hundred thousand miles of faithful transport.
At the dawn of the internal combustion engine age it was a different matter. Machines were little more than bicycles with rudimentary engines attached, brakes and tyres were barely capable of doing the job demanded of them, and the early motorcyclists were a hardy and daring breed.
You might think that this article would now head into retrotechtacular territory with a nostalgic look at an early motorcycle, but instead its subject has a much more recent origin. We happened upon [Buddfab]’s contemporary build of a 1905-era motorcycle, and we think it’s a bike you’d all like to see.
The bike itself is a faithful reproduction of a typical Edwardian machine. It has a modified bicycle frame with a belt drive and springer front forks. That’s all very impressive, but the engine is a masterpiece, crafting a more modern parts bin into something resembling a 1905 original. He’s taken the cylinder, piston, and half a cylinder head from an aircooled VW flat four and mated it with the crankshaft of a 125cc Honda, welding the two connecting rods together to join German and Japanese parts. With a custom-made crankcase, Lucas points, and the carburetor from a British Seagull outboard motor it both looks and sounds like an original, though we’d expect it to be significantly more reliable.
You can see videos of both bike and engine below the break, as he takes it for a spin through American suburbia. Sadly we’ll never see it passed to the definitive writer on early motorcycles for an expert view, but it would fool us completely.
Continue reading “Motorcycling Like It’s 1905 With A Home Made Engine”
Over the course of 10 years, [Bruce Campbell] has built himself a sleek pad out of a Boeing 727-200 in the middle of the picturesque Oregon countryside.
As you’d expect, there are a number of hurdles to setting up a freaking airplane as one’s home in the woods. Foremost among them, [Campbell] paid $100,000 for the aircraft, and a further $100,000 for transportation and installation costs to get it out to his tract of land — that’s a stiff upfront when compared to a down payment on a house and a mortgage. However, [Campbell] asserts that airplanes approaching retirement come up for sale with reasonable frequency, so it’s possible to find something at a lower price considering the cost of dismantling an airframe often compares to the value of the recovered materials.
Once acquired and transported, [Campbell] connected the utilities through the airplane’s existing systems, as well going about modifying the interior to suit his needs — the transparent floor panels are a nice touch! He has a primitive but functional shower, the two lavatories continue to function as intended, sleeping, dining and living quarters, and a deck in the form of the plane’s wing.
Continue reading “A Grounded Option for the Jet-Setting Homebody”