Homemade snowmobile: technical specifications, how to do it yourself

The snowmobile is a unique vehicle; this type of transport has no equal in terms of cross-country ability on snow. Therefore, they are considered an indispensable tool for any angler. In terms of design, it is a vehicle with skids for driving on snow, and it moves with the help of an aircraft propeller that turns a gasoline engine.

Sledges are capable of speeds up to 150 km / h, which is an indisputable advantage over snowmobiles. With a cab and soft suspension, snowmobiles can be the most comfortable vehicle after a car. But the car will not go through impassable expanses covered with snow.

At first glance, everything is very complicated, but if you delve into it, then there are no difficulties, and it is really possible to make a snowmobile yourself from improvised means, without spending a lot of effort.

Technical characteristics of the snowmobile

The snowmobile is, in fact, a chainsaw, but with relatively little power, it is possible to develop great speed. For example:

• Engine speed – 4700.
• Power – 15 hp
• The maximum propeller force is 62 kg.
• Screw diameter – 1300 mm.
• The maximum number of revolutions of the screw is 2300.
• The gear ratio of the gearbox is 1,85.
• The area of ​​the skids is 0,68 square meters.
• The capacity of the fuel tank is 40-50 liters.
• The highest speed is 40-50 km / h.
• The highest speed on hard snow is 50-70 km/h.
• The highest speed on snow, in open spaces – 70-80 km / h.
• The highest speed on snow crust is 100-110 km/h.
• Maximum weight (without driver) – 90,7 kg.
• The maximum weight with a load is 183 kg.

Load

Carrying capacity is the total weight of the vehicle with passengers and ammunition. Up to 5 people can be in the snowmobile. Therefore, in full gear, the weight of the vehicle can reach 300 kg.

In other words, snowmobiles are a fairly roomy mode of transport that allows you to transport people and goods over long distances in conditions of total snow cover. They may also be indispensable in conditions of fishing or hunting.

Travel range

If the vehicle is not equipped with a powerful engine, then one tank with a capacity of 40 liters is enough to drive up to 300 km.

Fuel supply

As a rule, a standard tank of 40-50 liters is installed. In addition, you need to take a container of fuel with a volume of 20 liters on the road. This fuel is enough to cover a considerable distance without refueling. In any case, you need to correctly calculate the fuel supply, since in the snowy wilderness, it is unlikely that you will be able to refuel.

Travel speed

On ordinary rolled snow, snowmobiles can be accelerated up to 50 km / h, and on untouched, long-lying snow – up to 80 km / h. The presence of a solid crust allows you to accelerate the structure to 110 km / h. At this speed, there is a danger of overturning, since the stability of the snowmobile is reduced.

Design of brakes and engine start

Since snowmobiles are an exclusive mode of transport, the brake system is far from a classic design. The design of the brakes resembles a kind of scrapers that are mounted on the ends of the rear skis. They are driven by cables coming from the brake pedal. When you press the pedals, the scrapers go down, which slows down the progress of the snowmobile.

Features of snowmobiles for fishermen

Snowmobiles for fishermen in winter, as useful as a boat in summer, although you can’t get very far in a watercraft in summer. And, nevertheless, on a snowmobile you can safely get to the center of any reservoir, in the presence of strong ice. Although, if you compare it with a car, you can also get on a snowmobile through deep snow, which you can’t do by car. In addition, the thickness of the ice required is somewhat less, since the snowmobile is much lighter.

How to make a do-it-yourself snowmobile

As practice shows, it is not so difficult to make a snowmobile, although you will have to stock up on time, tools, materials for work and drawings. At the same time, it is necessary to observe accuracy in manufacturing, since here the laws of physics and aerodynamics come to the fore. The quality work of all units, which means the durability of the vehicle, will depend on such knowledge.

Housing design

They begin to make snowmobiles with the manufacture of a hull, which consists of a frame and skin. In order for the frame to have significant strength, two spars are provided in the design. They have the following dimensions: 35x35x2350 mm. In addition to them, power stringers were introduced into the design in the amount of 5 pieces, with dimensions of 20x12x2100 mm. Plus, the case has a front compartment and a compartment at the back where the engine should be located. The body must be aerodynamically shaped, so it has a narrowing in the front.

The entire hull, throughout the entire length, is reinforced with four frames located at an equal distance from one another. They are made of solid plywood, 10 mm thick. Frames, for greater reliability, especially wide ones, have transverse reinforcement with special beams.

First of all, the lower frame is mounted, on which the frames are installed. Spacers are also mounted here, which are attached to the frames with corners. After that, the stringers are fixed. The frame is glued with casein glue. The joints are fixed with gauze, after which these places are abundantly impregnated with glue. Another option is also possible: first, the bandage is impregnated with glue, and then the connection points are wrapped around it.

The body is sheathed with plywood sheets, and duralumin sheathing is mounted on top. The seat for the driver can also be made from plywood or factory plastic. In the rear, behind the seat, there is a luggage area where tools, spare parts, a container of gasoline, as well as the angler’s personal belongings can be stored.

Propeller system

A propeller installation requires a more serious approach than assembling the cabin and hull. To rotate the screw, for the most part, they take the engine from the IZH-56 motorcycle. The screw shaft is mounted on a bearing, which is located on the frame.

The engine is mounted on a wooden plate, using two brackets and four struts. The plate has dimensions of 385x215x40 mm. It is desirable to sheathe the plate on both sides with plywood, 5 mm thick. Duralumin corners are attached to the legs of the struts.

In order to be able to adjust the V-belt transmission to the screw, a plate of plywood or textolite is provided between the channels and the plate. The engine is cooled by a fan mounted on the crankcase by means of a bracket.

Running suspension

Chassis installation is a continuation of the 2 previous stages. Plywood, 10 mm thick, serves as skis. To reinforce them, a thicker beam is used, and the upper part of the ski is sheathed with stainless steel. The entire ski mechanism is attached to the body with M6 screws.

The design of the ski also consists of an undercut, which is made of a pipe with a diameter of 8 mm. The ends of the pipe are flattened. The pipe is attached in the middle part of the mount under the “boar”. Undercuts allow the snowmobile to maintain stability when cornering.

The front of the ski is flexed. To do this, the ski is placed in boiling water (only the part that needs to be bent) and bent using a fixture (stock). To keep the front of the ski in shape, a metal plate is installed. The ski spring is made of wood and has three parts.

The lower part is made of birch, which has dimensions of 25x130x1400 mm. A semi-axle is attached to it. The upper and middle parts are pine. Together they are connected with M8 bolts and duralumin sheets. A special shock absorber is provided in the front of the ski, which prevents the ski from burrowing into the snow while moving. It is made from a rubber band. The back of the snowmobile is already heavier, and together with the harness, the ski is always directed upwards.

The acceleration of the movement of the snowmobile is carried out by pressing the corresponding pedals, and the change in direction of movement is carried out by means of the steering column.

In order to avoid any problems with the operation of the snowmobile, it is better to take a ready-made propeller, since it is very difficult to make it on your own, especially the first time.

How to equip an aerosleigh?

Any vehicle must have several mandatory instruments, such as a speedometer, tachometer, ammeter and ignition switch. The fuel level indicator will not hurt either. All main devices are installed on the front panel made of textolite.

You can install some additional devices, but only if there is at least some sense. Well, for example, a GPS navigator, which may be needed if the path is long and unfamiliar places.

The cockpit should also have a carburetor air and throttle lever. It is advisable to install a rear-view mirror on the left side of the cab, and a visor on top of the cab.

Snowmobile based on a chainsaw engine

Such a construction is much simpler than the above construction. The engine used here is from a chainsaw. Despite its simplicity, it is unlikely that anyone will dare to go fishing on such snowmobiles.

To move long distances, you need a motor with a power of about 12 hp, and the motor power from a chainsaw is only 4 hp. The principle of installation is the same as in the first case.

If the reservoir is not far away, just a few kilometers, then you can go fishing on such snowmobiles, equipping them with a place to move fishing accessories.

accident prevention

A design such as a snowmobile requires special attention, as there is a rotating part that carries a potential danger to others. This part is a rotating screw or, as it is called, a propeller. So that a person does not get into the area of ​​uXNUMXbuXNUMXbits rotation and is not injured, it must be hidden in a special casing. In addition to the fact that this casing will protect others, it will also protect the screw itself from foreign objects that can simply break it.

In the process of work, all dimensions given in the drawings must be strictly observed. Self-production requires great care: it is necessary to check each bolted connection, especially on skis, since they experience the main load.

During operation, you should regularly check the attachment points, as well as the propeller itself for defects. In addition, you should pay attention to the normal operation of the engine, the presence of fuel and oil level. This is the only way to count on the trouble-free operation of a home-made device, especially if it is designed for long-term operation.

Snowmobiles can make life easier for a fisherman and quite significantly, especially in snowy areas. This is the only vehicle, other than a snowmobile, that can easily travel long distances in such conditions.