He even gets his motor up to 12,500 rpm with his homebrewed drive circuit. Making your own motors can help you solve some difficult engineering challenges, like building motorized rollerblades.

And if you're wishing that your old-school manual stroller had a motor … well, the Easy-Way kit is designed to give it one. Currently the subject of a Kickstarter campaign, the Easy-Way is ...

Kits with custom engine mounts are available from many tuning stores, making installation much easier. You can then do whatever you want with the 2JZ-GTE and extract as much power as you want. The 3.0 ...

This Ford Crown Victoria with a twin-turbo Rolls-Royce Meteor tank engine ... it’ll smoke ’em at just 2,000 rpm. It’s borderline unsettling to hear this machine drift around with an exhaust ...

The 777-horsepower Porsche Taycan Turbo GT almost defeats a Lucid Air Sapphire over the quarter-mile using its special boost ...

Provided the rest of the motor is built to take advantage of ... Aside from the headline rpm figure, the kit also provides significantly better air flow into and out of the cylinders by doubling ...

While its low torque output and lack of a brushless motor ... Turbo Mode that give it tremendous power. With its Turbo option engaged, this heavy-duty drill can reach eye-popping speeds of 2,500 ...

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Most of the time, the larger electric motor ... repair kit rather than a proper spare, which is what the Kia comes with. The EPA hasn’t rated the K4 equipped with its 1.6-liter turbo-four ...

The K4’s little turbo-four engine produces sufficient acceleration once it builds boost, but it takes time to do so. There’s a distinct surge in power at about 3,000 rpm, below which the ...