In this video, we build a 4x4 mini rock crawler from scratch using a vintage go-kart shell and a 670 V-Twin engine. The ...

Building a mini V8 engine from scratch takes serious machining skill, and every step shows it. The lathe shapes the cylinders, the mill cuts clean lines, and the pieces slowly stack into a functioning ...

Rim-driven thrusters turn the normal propeller-motor arrangement inside out; rather than mounting the motor at the center of the propeller, they use a large hollow motor, with the blades attached to ...