Part 1: • One-Motor CVT Robot Arm #1 - Gearbox Last time, I started a project to build a robot arm which only has one main drive motor, and uses a series of clutches to drive three separate axees.

The first one drives the whole robot around on its base which is made from a lazy Susan bearing - the clutch drives a spur gear around the inside of a large ring gear. James Bruton Posted: June 3 ...

Power, handling, battery, and charging. The 2025 Polestar 3 Long Range Single Motor comes with a 111 kWh battery good for up to 350 miles of range.

The single-motor 3 has an EPA-rated range of up to 350 miles, versus the dual motor's best figure of 315 miles (or 279 for the Performance model). A nice improvement, ...

The dual-motor Polestar 2 remains a competent EV to drive, and even without the performance pack, it's almost 1.5 seconds faster to 60 mph than its single-motor sibling.