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An idea on how to lock the new, 3 studs wide differential in a compact, reliable way.

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A number of solutions to create a compact, fluently working compressor.

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A simple add-on to a regular differential, that locks it automatically whenever a slip situation occurs.

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Two types of clutch that can be used on a single axle.

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Idea of a linear gearbox extended beyond the usual 3 speeds. Features fixed input and output shafts.

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Compact 2-speed gearbox, where gears are changed when the direction of motor’s rotation changes.

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Very small 2-speed gearbox, that is rotated by 180 degrees to change gears.

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Manual 10-speed gearbox based on driving rings. Built from modules that theoretically allow to build a gearbox of any number of speeds.

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The regular PF handset is not really handy. Here’s a couple of solutions that I’m using.

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A mechanism for tracked vehicles, makes them easier to steer and more effective to drive.

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