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A DIY E-bike Conversion on the Cheap

Cars That Think

Online discussions convinced me, however, that this is the expected behavior when commanding a motor to maintain a fixed amperage in its windings (thus applying constant torque) while under little load. With the power setting fixed, the wheel would spin increasingly fast and the amperage drawn from the battery would steadily increase.

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A DIY Tracker Tough Enough for the Arctic

Cars That Think

So, I set about building an open-source ice tracker from DIY components that not only proved to be much, much cheaper but also much more capable than the commercial options. This is fast enough to identify wind waves, which typically have a frequency of about 0.2 Hz, and longer swells, which range from about 0.08

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Search for Buried Treasure With This DIY Magnetometer

Cars That Think

So when the coil is pointed north ( and downward, at my northern latitude ), the Earth’s magnetic field adds to the magnetic field created by positive currents in the coil windings; when pointed in the opposite direction, the Earth’s field subtracts. This article appears in the May 2022 print issue as “A DIY Magnetometer.”.

DIY 98
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A DIY E-bike Conversion on the Cheap

Cars That Think

Online discussions convinced me, however, that this is the expected behavior when commanding a motor to maintain a fixed amperage in its windings (thus applying constant torque) while under little load. With the power setting fixed, the wheel would spin increasingly fast and the amperage drawn from the battery would steadily increase.

DIY 98
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Stuff We Use: Locking Pliers

The Truth About Cars

For anyone not in the know or just getting started on their DIY journey, one of the handles on a set of locking pliers contains the mechanism for locking the thing in place; the other handle has a small thumb screw which determines how far the plier jaw will stay open whilst locked.

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Barak Obama or John McCain - Which Candidate will Revive the Electric Car?

DIY Electric Car

Tags: Editorials candidates senator barak obama john mccain ev electric vehicle phev hybrid range extended campaign race 2008 energy sustainable clean solar wind biofuels diesel hydrogen.

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Why I'm not an Environmentalist

DIY Electric Car

My concern for the environment started when earth, fire, wind, water and heart combined to fight the forces of corporate greed and irresponsibility. Yes, Captain Planet was my hero. I’ve had quite a lot of greening influences in my life, from cartoons, to a kid’s solar experimentation kit, to my friend’s parent’s weird composting toilet.