Hacking Space Without Profit Or Secrecy

March 2, 2010 by Mike Szczys 46 Comments

Reader [Jacob] tipped us off about a project the aims to make the final frontier open source. The mission of the Copenhagen Suborbitals is to launch a man into space. What they’re not interested in is turning a profit, carrying hazmat or weapons, or keeping what they learn to themselves.

Surprisingly enough, isn’t this the next logical step after hobbyists send cameras into space? This team thinks so and they’ve been hard at work building and testing rockets. With the last round of successful tests behind them, they’ve paved the way for a launch of the first round of the campaign on June first. Da duh daaaah da duh duh da daaaaa

Build Your Own Hub Motor

February 18, 2010 by Mike Szczys 52 Comments

Hub motors put the power inside of the wheel. [Teamtestbot] goes deep into the hows and whys of building these motors, from parts, to windings, to the math behind the power ratios. The working example puts an electric motor inside the rear wheel of a Razor scooter. Past projects used belts to transfer the work of the motor to the wheel of the scooter. By integrating the motor and the wheel you end up with a much cleaner looking product. Check out the motor testing and the scooter test drive after the break.

For more tips on building your own electric motors take a peek at the Fly Electric page we covered back in November.

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Converting A Miata To All-electric

February 15, 2010 by Mike Szczys 23 Comments

[Henry Herndon] converted a Mazda Miata to an all-electric vehicle. There’s a ton of great information in his archives, as well as a round-up video that we’ve embedded after the break. It’s interesting to see him implement two different types of Nalgene bottles as coolant reservoirs. The polycarbonate on the first shattered on him but the soft plastic replacement seems to have done the trick. The batteries add a lot of weight to the vehicle and he ends up refitting the suspension to compensate. [Henry] registered the vehicle with the state and now has a street legal EV of his own design.

Also worth a look is his post covering the 2009 Wayland Invitational. There as a large collection of electric vehicle conversions at the get together.

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Trick Your Ride: Tank Conversion

February 14, 2010 by Mike Szczys 38 Comments

If wheels aren’t your thing you should really consider this tank-tread retrofit. It comes with two ramps so that you can drive your car up onto the tread platform. At first we thought this worked by chaining the vehicle’s frame to the tread frame and transferring power through a tread-mill interface. That’s not the case, it seems the transmission needs to be disconnected from the wheels and joined with the tank mechanics. Don’t miss the video antics after the break.

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Drill-powered Go Cart

January 28, 2010 by Mike Szczys 36 Comments

Here we have a toy car modified to use a drill as the powertrain. [Hans] has thrown a 12v 4.5 amp battery in to power the motor and it tops out around 9 miles per hour. This is similar in concept to the trash-based go cart from last week but this time there’s video. He’s built a couple of these and there’s footage of both after the break. Our favorite part is from the first video when dad chuckles with glee from behind the camera as son whips around the neighborhood on the mean-sounding machine.

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Electric Go Cart From Trash

January 22, 2010 by Caleb Kraft 33 Comments

A quick lesson on being a good parent. If you make an awesome electronic cart out of trash that may not necessarily be stable, or even fully capable of stopping once it gets going, you MUST put your children on it and insist that they drive. Did we mention that the system is full acceleration or no acceleration? Indeed, it is. There isn’t a writeup, and one really isn’t needed. This is dead simple. The parts list will explain most of what is going on, but the look of doubt and fear on the kids face is what really makes this hack worth it. Or is that possibly a look that says “what are you looking at?”

[via Flickr]

Cell Phone Based Car Starter, Another Take

January 19, 2010 by Caleb Kraft 56 Comments

[Dave] Had been working on a cell phone activated remote start for his car for a while when we posted the GSM car starter. While both do carry out the same job, we feel that there is enough good information here to share. He’s gone a pretty simple way, by connecting the vibrator motor leads to a headphone jack. He’s using that signal to then activate the remote start by setting off an extra fob. Though it is amazingly simple, this version does have an advantage. As [Dave] points out, his cell phone has several features which could be utilized to automate some of his car starts. He can set alarms as well as recurring calendar events to get his car started without his interaction. Lets just hope he doesn’t forget and let his car run too long unattended, especially if it is in a garage attached to his house.