Historians say that the sail appeared on land about four thousand years ago! Fiction? No, the reality is — there is documentary evidence.
This is a hovercraft I built for several years. Engine – from VAZ-2108 with a capacity of 74 HP, Case – fiberglass, fiberglass epoxy resin, is made of the type “sandwich” with the Styrofoam plates. The structure weight was about 370 kg. propeller – propelling three-bladed, with a diameter of sweeping the surface 1700 mm and variable in place of step. There are still two the blower for pressurization of the airbag. Skirt the cushions are made from French awning waterproof material with a density of 600 g/m2.
We offer young athletes like high-speed cord combines the experience gained in this kind of automodelisme in recent years. Sorpresa design is logical from the point of view the sole purpose of achieving the highest speeds, that is, turning the aircar “Frank” sportsread. But if to argue from the point of view of an engineer, simplicity is the evidence of correctness of the choice of scheme design and, if it reaches the desired result.
Bike, perhaps the most common vehicle. And the fact that the most economical — there is no doubt that only two sandwiches to two hours to pedal. But is it possible to increase the efficiency of the human “engine”? With the reduction of spending “fuel”, nothing happens. Friction and the weight of the machine is reduced almost to a minimum. There is also a “box of speeds” the device for changing the gear ratio by switching the circuit to a small or large sprocket. It remains only to lengthen the levers of the pedals, but experts adamantly claim that their optimal length — 170 mm.
One of the main problems faced by the Amateur constructor engine aircraft — selection or production of the power plant the necessary power, weight and efficiency. This problem is solved normally, on existing capacities and experience of building such units.
The creation of various devices to facilitate work in the garden I have been doing for many years. However, to the readers of their developments have not yet ruled, this is my first attempt.
I want to introduce readers “To the” constructed me an amphibian. Constructed I, in practice, to solve a number encountered in the design of problems and contradictions. There were quite a lot, but the main makes sense to call.
My buddy with a passenger all-terrain vehicle UAZ Hunter and a cargo car of the raised passableness, the GAZ-66, popularly known as “shishiga”, has designed and manufactured a single-axle trailer suitable for both machines. Specifications and dimensions of their cars, oddly enough, close, in addition to speed, however, when riding with the trailer speed is still limited. Of course, buddy could buy a ready-made trailer (it probably would have been even cheaper), but it took him not quite normal, what is not for sale.
A greater number of young athletes to the runaway yacht class P-2. And it is clear. The accessibility and speed of production, opportunities to experiment give the appeal of a “Junior” kind of models. Into is and the quiet romanticism of sailing races in an age when we all were a little tired from the continuous noise of the motors.
Perhaps, in the memories of every adult baby winter fun be sure to contact the sled. And it’s safe to say that in a rare home today will not meet them: they still serve the kids and adults — the baby in daycare to take a little weight out of the house or building to deliver in the snow.