We’ve seen a lot of small-scale engines shared by JohnnyQ90 on YouTube, however this one is totally different. That’s as a result of there’s an honest-to-goodness three-speed guide gearbox connected to the again, and we would like it.

This setup makes use of three ahead speeds in addition to a reverse gear, operated by friction clutches. It’s all contained in an aluminum housing that is 3D printed, and kit modifications are carried out by two connections on the highest of the gearbox. The lever closest to the engine selects ahead, impartial, or reverse, whereas the opposite lever goes by first, second, and third. They are operated by two servos; a 3rd servo controls the engine’s throttle.

Toggle switches on the controller function the transmission, with throttle enter managed by a squeeze set off. The setup is demonstrated on a easy base the place the engine and transmission are linked to a spinning weight, which locations simply sufficient drag on the powertrain to listen to the revs climb by the gears and totally different charges. It all appears to operate effectively, even dealing with full-throttle gear modifications with none obvious points. Whether that is the case after 5 years or 60,000 miles, nonetheless, stays to be seen.

As with different JohnnyQ90 movies, the eye to element within the building of those small mills is astounding. The clip opens with the creation of a smaller pulley to get extra strain from the water pump, and aspect panels on the oil pan are changed with glass so we will see the crankshaft in motion. And the sound is not dangerous, both.

The video description features a hyperlink to purchase the three-speed stick, displaying a price ticket of $439.99. It’s additionally supplied as a bundle with the engine (a 17.5-cc four-cylinder) for a price of $1,291.97. All we’d like is a 1:8 scale Honda S2000, and our radio-controlled desires could be full.