Building A Square Bicycle

Inspired by [Michael Ubbesen Jakobsen’s] BauBike design, [Aaron Seiter] decided to try building his own.

The entire frame was made out of 1″ square steel tubing and welded together in no time at all. Actually intending to ride this bike, he had to make a few changes to the original BauBike design. Most importantly, he raised the seat up to allow for proper leg extension while pedaling.

The funny thing is most people on Reddit thought it wasn’t going to work, so shortly after posting the gallery to imgur, [Aaron] also uploaded a short video to YouTube to prove, yes, he can actually ride it. Stick around after the break to see it in action.

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Try Not To Fall Off The Backwards Brain Bike

[Destin] of SmarterEveryDay fame has a challenge for your brain : a bicycle where the handlebars turn the front wheel in the opposite direction of a typical bike (YouTube link). For example, turning the handlebars left turns the wheel right and vice versa. He warns you it’s harder than it looks.

The hack that pulls this off is a simple one compared to bike hacks we’ve previously covered. Gears on the head tube make this possible. It was built by his welder friends who challenged him to ride it. He couldn’t at first; determined to overwrite his brain’s memory of bike riding, he practiced until he finally succeeded. It took him eight months. When it was time to ride an old-fashioned bike, it only took him about twenty minutes to “un-learn” the Backwards Brain Bike. [Destin’s] biking illustrates neuroplasticity, memory, and learning in a fun way (fun for us; no doubt frustrating for him).

As a testament to the sponge-like brains of youth, [Destin’s] son learned to ride the Backwards Brain Bike in only two weeks.

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Edge-Lit Clear Plastic Bike Combines Nighttime Riding Safety With Aurora Borealis Flair

Several years ago [dan] saw some plastic frame bikes designed by MIT students. Ever since he saw those bikes he thought it would be cool to make an edge-lit plastic framed bike.

The frame is made from 1/8″ and 3/8″ thick polycarbonate sheet. The parts were designed with tongue and grooves so they fit together nicely. The joints were glued to hold everything together. Holes were drilled in the edge of the plastic large enough to fit an LED. Once the LED was inserted in the hole, it was wired up and secured with hot glue. There are about 200 LEDs on the bike, powered by a constant current LED driver circuit that [dan] designed specifically for this project.

The build process was certainly not flawless. For example, the plastic holding the bottom bracket (where the crank and pedals attach) broke. This can be avoided by increasing the amount of material in that area prior to cutting out the pieces. [dan] was able to fiberglass his broken parts back together.

[dan] admits that the bike is heavy and a little wobbly, but is definitely ride-able. He did us a favor and made all his CAD files available to anyone that wants to make one themselves. If polycarbonate is too expensive for your blood, check out this bike make from cardboard.

Extending The Range Of An Electric Bike

Cruising around town on your electric bike is surely a good time…. unless your bike runs out of juice and you end up pedaling a heavy bike, battery, and motor back to your house. This unfortunate event happened to Troy just one too many times. The solution: to extend the range of his electric bike without making permanent modifications.

Troy admits his electric bike is on the lower side of the quality scale. On a good day he could get about 15 miles out of the bike before it required a recharge. He looked into getting more stock battery packs that he could charge and swap out mid-trip but the cost of these was prohibitive. To get the extra mileage, Troy decided on adding a couple of lead-acid batteries to the system.

The Curry-brand bike used a 24vdc battery. Troy happened to have two 12v batteries kicking around, which wired up in series would get him to his 24v goal. The new batteries are mounted on the bike’s cargo rack by way of some hardware store bracketry. The entire new ‘battery pack’ can be removed quickly by way of a few wing nuts.

Connecting the new batteries to the stock system go a little tricky and the stock battery pack did have to be modified slightly. The case was opened and leads were run from the positive and negative terminals to two new banana plugs mounted in the battery pack’s case. The leads from the new batteries plug right into the banana plugs on the stock battery pack. The new and old batteries are wired in parallel to keep the voltage at 24.

Troy found that he’s getting about twice the distance out of his new setup. Not to bad for a couple on-hand batteries and a few dollars in odds and ends.

Simple POV Bike Effects with WS2811 Strips

[Andrew] wrote in with a new take on the classic persistence of vision bike spoke hack. While many of these POV setups use custom PCBs and discrete LEDs, [Andrew]’s design uses readily available off-the-shelf components: WS2811 LED strips, an Arduino, an Invensense IMU breakout board, and some small LiPo batteries.

[Andrew] also implemented a clever method of controlling his lights. His code detects when the rider taps the brakes in certain patterns, which allows changing between different light patterns. He does note that this method isn’t incredibly reliable due to some issues with his IMU, so now he senses when the rider taps on the handlebars as well.

If you want to build your own bike POV setup, you’re in luck. [Andrew] wrote up detailed instructions that outline the entire build process. He also provides links to sources for each part to make building your own setup even easier. His design is pretty affordable too, coming in at just under $50 per wheel. Check out a video of [Andrew]’s setup in action after the break.

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Many Gave Their Lives For This Cargo Bike To Be Re-Born

Cargo bikes are very specialized and you don’t see too many of them out on the streets because of that fact. Being uncommon also means they’re rather expensive if you wanted to buy a new one. Like any hardcore bike DIYer, [Mike] got around this issue by building his own out of a couple old bikes. His goal is to show car-dependent people that you can get away with biking most of the time, even if you need to move some stuff from place to place. The build process for this monster was so involved that it required two pages of documentation; Part 1 and Part 2!

There are a few types of cargo bikes. There is the trike (seen often in regular or reverse trike varieties) with a bin between the 2 adjacent wheels. Two-wheeled options are usually either front loaders (the storage area between the rider and the front wheel) or those with rear racks. Mike’s bike is the latter.

He started with a 26″ wheeled bike that was already a Frankenbike of sorts, even the frame alone was a conglomeration of two separate bikes! To start, the rear wheel and chain was discarded. A kid’s mountain bike with 20″ wheels was disassembled and the head tube was cut off. The top and down tubes of the smaller bike were notched so that they fit nicely with the seat tube of the larger bicycle. The two frames were then welded together along with several pieces of support to make sure the bike stayed together through the rigors of riding. The rear rack is made up of some old bike frame tubes and some metal from the frame of a sofa that was being thrown out. Nothing goes to waste at Mike’s place! The 20″ kids bike rear wheel already had a 5 speed cassette so that was a no brainner to re-install. In the end, Mike has a bike that cost him zero dollars and shows the world it is possible to build a utilitarian bike and reduce your dependence on automobiles.

If cargo bikes are your thing, you may be interested in this up-cycled cargo bike, this one with a huge front bucket or maybe even this nifty bike trailer.

 

Bike Pedals in Both Directions, Gets You to Your Destination AND Back

[punamenon2] has built an interesting bike that moves forward regardless if it is pedaled forward or backwards! What? Yes, you read that correctly. Pedal forward or backwards and the bike goes forward. This project started off as any old cruiser with a free-wheeling rear hub. To pull off this mod a second free-wheel and sprocket had to be added to the current wheel assembly. One free-wheel and sprocket set is used when pedaling forward, the other set is used when pedaling in reverse. There is also a new chain tensioner that serves to not only keep the chain taut but also allows for the chain to change directions which ultimately allows this novel idea to work.

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