Into the sky — by parachute

Paramotor Carlson-4: Parawing, Power Cart, Twin IZH Engines

This powered paraglider (such craft are now more often called paramotors), developed at the design bureau of the “Eureka” amateur technical creativity club in the village of Torga, Yakutia, was named “Carlson-4”. The number in its name clearly indicates that this is the fourth variant of such an aircraft. Since 1985 we have accumulated considerable Read more…

Wheels under control

Camber and toe-in adjustment at home: DIY angle gauge

Camber and toe-in of a passenger car’s wheels can be adjusted very accurately without going to a service station. You only need some basic metalworking skills and simple tools to make your own set of devices for this adjustment—simple and convenient to use. Consider as an example the VAZ 21063. The distance between the centres Read more…

Hang glider pilot’s “desk”

Hang Glider Simulator: DIY Training Device Build Guide

Training on the simulator is part of a complex of organizational, methodological and technical measures of the Kaunas Hang Gliding Sports and Technical Club DOSAAF, aimed at improving flight safety, and is designed to master the skills of controlling hang gliders of any class. *** The design of the simulator is based on a device Read more…

Tracked… motorcycle

Half-Track Off-Road Motorcycle: DIY Build Guide

The design presented here is a half-track motorcycle with a steering front wheel on a low-pressure tire and a driven track, intended for off-road travel—mainly in summer and in the off-season, in winter on snow (cover up to 25 cm thick), and also on ice and hard crust. The motorcycle’s capability is, in effect, “go Read more…

“Yuzhanka”: a motorboat under… sail

Yuzhanka Motorboat to Sail: DIY Rig, Centerboards, Plans

Every year more and more bodies of water become “closed” to motor vessels. So what are water-motor tourism enthusiasts to do? Moor their boats for good? Not at all! It’s time to remember the sail. Sailing rig can become a real alternative to the rattling, fuming, water-polluting outboard motor. The feeling I had when I Read more…

Riding on an air cushion

Fig. 1. Single-seat amateur amphibian “Kartair Mk 111” (Australia). Equipped with two two-stroke engines (160 cm³ each). Centrifugal fan, controlled by air rudders.

Engineers were led to the use of air cushion by numerous attempts to reduce the hydrodynamic resistance of ships. As early as the beginning of this century, Swedish engineer Gustav Laval began work on accelerating ship movement using air lubrication—a thin layer of air introduced between the ship’s hull and water. However, he failed to Read more…

A passenger car on two wheels

Build an Autoroller: DIY Scooter-Car Hybrid 50cc

A motorcycle and a car are different machines. First and foremost, in terms of comfort. But can the advantages of two-wheeled transport be combined with the convenience of a passenger car? It turns out they can. Such two-wheeled machines—autorollers or motocars—are sometimes seen on the streets. We suggest you build one of these designs yourself. Read more…

Farm automation

Automatic Water Heater for Livestock: DIY Circuit

Livestock productivity depends not least on the temperature of the water that animals drink. Warm water is also required for farm needs. That’s why it’s so important to control its heating at any time of the year. This can be entrusted to a simple automatic device. By the way, it will also take care of Read more…