Do-it-yourself walk-behind tractor from a chainsaw: how to make a walk-behind tractor from a Druzhba saw? Homemade engine drawings

Product benefits

The advantage of a home-made walk-behind tractor from Druzhba is that it is quite an expensive pleasure to purchase a factory-made device. Having a small area or using a walk-behind tractor infrequently, it is not always advisable to purchase it. And you can assemble a generally productive home-made device from what is lying around at home.

Parts, if desired, can be collected absolutely free of charge. And it will not be a pity to spoil them under unfavorable circumstances. The very same engine from a chainsaw is quite economical and not whimsical. Inexpensive fuels and lubricants can be used, which also has an impact on the overall benefit.

A walk-behind tractor is not the only thing that can be made from a Druzhba chainsaw; using this tool, you can make many other useful devices, about how and what you need for this, read the article at this link.

What homemade chainsaw can you make?

A chainsaw is a very handy tool for making homemade products. By adapting it to a special platform with wheels, and connecting the chain to the shaft on which the knives will be installed, you can get a powerful lawn mower. By the way, in order not to bother for a long time, an asterisk from the rear wheel of the bicycle can be installed on the shaft.

In addition, an excellent sawmill can be made from a chainsaw, since redoing this tool, in this case, is also minimized.

In general, all homemade chainsaw products can be divided into two large groups:

The first group includes those homemade products, in the manufacture of which there is practically no need to disassemble and modernize the chainsaw;
The second group of homemade products includes all kinds of equipment: snowblowers, mopeds, snowmobiles, ATVs, etc. In other words, complex mechanical devices, for the manufacture of which you will have to radically disassemble a chainsaw, make a water or air cooling system, in general, completely change this gasoline tool.

Consider what can be done from a chainsaw, which will definitely come in handy in the household.

So, for example, on the basis of the Druzhba chainsaw, you can make the following homemade products:

Powerful boat engine;
Gasoline grinder;
Sawmill;
Motor-cultivator;
Lawn mower.

If it comes to homemade automobiles, then from almost any chainsaw, you can do:

A moped if you install a chainsaw on a bicycle;
Snowmobile and snowmobile;
Snow blower;
ATV;
Kick scooter.

Of course, the second group of homemade chainsaw products requires a thorough approach and a complete study of the design.

Also, you will need to purchase all the necessary materials, and in some cases, you cannot do without a welding machine.

Sawmill from a chainsaw

The easiest to manufacture is a home-made sawmill from a Ural, Taiga or Druzhba chainsaw. The essence of the work of a home-made sawmill is that there is one large guide along which the chainsaw moves back and forth on a movable slide.

As a guide, you can use a rail or several long, but flat metal corners. The platform on which the chainsaw will subsequently be fixed is made from a piece of thick steel, the thickness of which must be at least 5 mm.

Particularly noteworthy is the movable part of the sawmill, the one through which the platform carries out its movement along the guide. As rollers, here you can use a metal pipe with a rubberized surface

It is very important that the width of the moving part coincides with the width of the guide.

As you can see in the photo, the log located next to the sawmill is quite easily cut into several parts, by means of a chainsaw moving along the guide. Thus, you can save a lot on the purchase of a sawmill, while, as you can see, the chainsaw practically does not need to be altered in some way, disassembled, etc.

Motoblock from a chainsaw

As mentioned above, you can make various homemade products for home and summer cottages from a chainsaw. Some of these homemade products are a mower and a walk-behind tractor. With a mower from a chainsaw, things are not as difficult as with a walk-behind tractor, for the manufacture of which you will have to cook a metal frame, after which, adjust two wheels to it on the side.

The principle of making a walk-behind tractor from a chainsaw is to use several stars that could transmit the rotating force to the knives. For these purposes, the stars are located on the sides of a metal shaft, on which several knives are welded.

A homemade walk-behind tractor from a Ural or Druzhba chainsaw will become a real assistant for those who have a fairly large garden. Maybe such a walk-behind tractor will not be very powerful, but it will be quite enough to solve the main task of cultivating the land.

We make a walk-behind tractor from a chainsaw with our own hands

According to the landowners, who have already experienced all the features of handicraft motor vehicles from a gasoline saw assembled with their own hands, "Druzhba" demonstrates an excellent result after modernization. With the right choice of a power plant for a home-made unit, it works no worse than its industrial prototypes.

The absolute advantages of this device are:

high power, reaching in some samples up to 4 horsepower;
lightness - insignificant weight will not make the unit heavier and will add mobility to it;
small size - a small engine does not require frame reinforcement, which reduces the financial costs of its manufacture;
economical consumption of fuel and lubricants;
performance, which is conditioned by the readiness for continuous loads;
the possibility of using all kinds of fuels and lubricants;
functioning in a completely autonomous mode;
applicability for various types of work.

The assembly procedure depends on the drawing used and is subject to change, but the main points of the assembly include the following activities. The frame is assembled according to the drawing.

The work process is organized as follows:

we take a metal pipe with a cross section of at least 20 mm and bend it so that the overall appearance looks like 2 spars, the end of which is directed upwards;
in the rear area of the spar, the steering wheel from the motorcycle is welded;
we strengthen the base with crossbars;
to the rear bends of the side members, electrically weld the support platform for the battery.

Further work continues on the following points.

Now we mount a specialized flange, with the help of which the shaft will be fixed to the main structure of the unit from a gasoline saw.
At the market of used parts, we buy sprockets from a UAZ car. Through them, the clearance (ground clearance) between the ground plane and the connecting wheel beam will be formed.
We take bearings with a 30 mm diameter. We fix them to the main bridge.
The gearbox, equipped with a gearbox, is assembled from the engine from the motorcycle.
Wheels and cutters of a handicraft motor-cultivator are installed on a metal pipe of the required diameter.
Due to the fact that the speed of the walk-behind tractor is small, a forced-type cooling system is required. The simplest solution is to install a fan. And so that the air flow is directed to the cylinder, a protective coating is applied. It could be an old motorcycle gas tank.

After completing the assembly work, it is imperative to test the equipment, doing this with the utmost discretion.

Step-by-step instructions for making a walk-behind tractor from "Friendship"

The manufacturing process depends on the chosen design option, drawing. Step-by-step analysis of one of the modifications:

Two bases (spars) are made of a steel pipe or profile with a diameter of at least 20 mm. The fold is done so that the ends are bent upward.
On the long part, a steering wheel is welded, welded randomly or taken from motor vehicles. The bases are connected and reinforced with crossbars. Also, platforms for the battery and gas tank are welded or screwed to the bend of the base.
To mount the engine from pipes or a profile, a structure in the form of a slide is made. The motor is attached to it, and then to the base.
Next, the RU-32 collar flange from the VAZ car is mounted. Thanks to it, the shaft that transfers the forces from the motor will be fixed. It is also recommended to use the VAZ gearbox shaft as a shaft. To fix the shaft in the flange, bearings with a diameter of 30 mm are used.
The transmission link is made of sprockets from any old car or moped. One is mounted on the gearbox shaft, the other on the shaft on which the cutters or wheels are located. A chain from old motor vehicles is connected to each other.
Further, installation and connection of all parts is carried out.
Wheels and cutters can also be made independently, using old discs from a car or from agricultural equipment as a basis. The resulting parts are mounted on a steel pipe or circle of the required diameter.

You also need to consider an effective forced-type cooling system. Several options are offered. The simplest option is to install a fan. More complex designs suggest the use of water cooling.

Step-by-step instructions for making a walk-behind tractor from "Friendship"

The manufacturing process depends on the chosen design option, drawing. Step-by-step analysis of one of the modifications:

Two bases (spars) are made of a steel pipe or profile with a diameter of at least 20 mm. The fold is done so that the ends are bent upward.
On the long part, a steering wheel is welded, welded randomly or taken from motor vehicles. The bases are connected and reinforced with crossbars. Also, platforms for the battery and gas tank are welded or screwed to the bend of the base.
To mount the engine from pipes or a profile, a structure in the form of a slide is made. The motor is attached to it, and then to the base.
Next, the RU-32 collar flange from the VAZ car is mounted. Thanks to it, the shaft that transfers the forces from the motor will be fixed. It is also recommended to use the VAZ gearbox shaft as a shaft. To fix the shaft in the flange, bearings with a diameter of 30 mm are used.
The transmission link is made of sprockets from any old car or moped. One is mounted on the gearbox shaft, the other on the shaft on which the cutters or wheels are located. A chain from old motor vehicles is connected to each other.
Further, installation and connection of all parts is carried out.
Wheels and cutters can also be made independently, using old discs from a car or from agricultural equipment as a basis. The resulting parts are mounted on a steel pipe or circle of the required diameter.

You also need to consider an effective forced-type cooling system. Several options are offered. The simplest option is to install a fan. More complex designs suggest the use of water cooling.

Snow blower

If in the previous design you replace the shaft with the plowshares or the spokes of the harrow with an auger mechanism, add a casing, an intake device and a pipe for ejecting snow - you will get a pretty decent snow blower from the cultivator.Many home craftsmen design their homemade products with interchangeable attachments for different seasons. The motor from the Stihl saw with a power of 3-5 hp. will quite cope with the cultivation of the garden in spring and autumn, and with the removal of loose snow at the summer cottage in the winter. The most critical unit is the screw mechanism.

Homemade snow blower

If you are not a professional designer, then it is better to download ready-made drawings from the network. The auger blades are made of thick rubber such as a conveyor belt. The intake device is made of galvanized steel. A plastic sewer pipe is suitable for the snow discharge pipe.

Creating a walk-behind tractor from the Druzhba chainsaw

Chainsaw "Friendship" is considered the best choice for the manufacture of a walk-behind tractor. This simple and very productive technique, for sure, is in the armament of many owners. Using its structural elements, you can make a fairly powerful walk-behind tractor, since it has the following features:

Due to its low weight, such equipment can be used for work of any complexity.
A very powerful engine.
Compactness and durability.

On the basis of this device, a high-quality walk-behind tractor is obtained, the speed of which is 2.5 km / h, and the power is about 4 liters from.

The process of creating an aggregate is similar to the method that is used for all other models, but there are also some nuances:

The main shaft of the future design is equipped with a special flange, which has a collar type, RU-32, which will then make it easy to screw bridge-type gearboxes.
Sprockets are taken from UAZ and, together with a double-row chain, are installed on the future device and allow increasing the distance from the gear bridge to the ground. Timing sprockets allow you to increase the distance to the soil by 15 cm.
The housing-type bearings are screwed to the main axle and have a diameter of 30 mm.
A gearbox with a gearbox can be constructed from a motor from the Karpaty motorcycle; it is necessary to provide a centrifugal standard clutch.
To install the cutters and then mount the wheels, you need to use a steel pipe.

In front of the frame, you need to install a load that can hold the center of gravity.

A pipe with a diameter of 30 mm is welded as handles.

As soon as the walk-behind tractor from the chainsaw is ready, it can be tested on the site. To do this, fill up with fuel and try to do the work. Modify your device if necessary.

The advantages of such a unit are:

the ability to use a variety of lubricants and fuels;
work in a completely autonomous mode;
suitability for any type of work.

To create this type of technique from a chainsaw, you do not need specific knowledge. A little ingenuity and desire to get an effective technique is enough. Homemade walk-behind tractor suitable for use in private plots and in summer cottages.

What does it take to make a moped from a chainsaw and a bike?

For the most part, converting a bicycle into a moped with your own hands by attaching a motor from a chainsaw to it does not require special skills of a locksmith or engineer. If you are new to this business, there are numerous chainsaw moped drawings, as well as educational video reviews. Also, not every man in the garage has everything he needs to make a motorbike from a chainsaw with his own hands. Therefore, before assembling, it is recommended to study the list of necessary parts, fasteners and spare parts and buy the missing items.

Moped

In specialty stores, you can find whole kits, which include a ready-to-install engine, fasteners and other parts that are necessary to transform a bike into a moped. This kit will greatly facilitate the assembly of the motorcycle, since there is no need to select an engine of suitable power, fasteners, battery, transmission belt, cable, etc.

Assembly instructions and drawings of a homemade moped

Firstly, we will first analyze the simplest and most affordable option on how to make a moped from a chainsaw from the photo above. When assembling, the question often arises of how to put a motor from a chainsaw on a bicycle

It is important that it is securely attached and does not move while riding. For this type of homemade motorcycle, you need to fasten the following parts with clamps in certain places:

the battery is installed on the upper pipe;
the bike motor itself from the chainsaw is attached at the intersection of the lower front and seat tubes;
fuel tank - near the engine.

The next step in the rework is to create and install the pulleys on the bike. They are needed so that the operation of the engine provokes the rotation of the rear wheel. As a rule, wheels with an external barrier are used for pulleys, which are about the size of CDs.

DIY moped

When choosing wheels, take into account the strength and reliability of both the material itself and the fasteners. To install the pulleys, the front wheel is attached to the motor shaft, and the second pulley is attached to the rear wheel hub.

Next, you need to slide the belt over the pulleys. Sometimes men use a chain instead of a belt. In this case, the pulleys are replaced with a chain, and the principle of its installation is no different.

If we talk about a more complex version, then as a result you will get a homemade vehicle, most similar to a real motorcycle. The main differences from the previous design are in a more reliable and durable frame, wider wheels that can be removed from the old moped, the presence of shock absorption and the installation of the engine from a chainsaw.

The most convenient place for the engine will be a separate platform welded at the bottom of the frame. The fuel tank can also be placed there. An exhaust pipe is also attached to the engine. As for the battery, the owners of homemade mopeds recommend placing it closer to the steering wheel. The next step will also be the transmission and engine connection. All the nuances of how to correctly make a motorcycle from a chainsaw with your own hands you can watch in the video.

Motoblock with a motor from a chainsaw

So, we have a gasoline saw that is not used very often or is completely idle. In this situation, after making certain calculations and selecting the necessary materials, our chainsaw becomes an excellent walk-behind tractor. The concept of creating artisanal agricultural machinery, depending on the manufacturer's brand, may vary, but the basic rules consist of the following steps.

The most important step is the development of the drawing, by which you will make the necessary device. Drawing documentation and diagrams of a walk-behind tractor from a gasoline saw can be made both independently and by downloading ready-made calculations from the Internet. Finding them will not present the slightest difficulty, it is enough to hammer a search query into the browser and select the assembly project you like.
When the drawings are available, it is time to assemble the frame for the future walk-behind tractor.
After the frame is ready, the saw motor and its fuel tank are fixed to it.
In the last turn, the auxiliary components of the system are mounted, which are responsible for control and other possibilities.

To implement the idea, prepare the following list of devices and materials.

Engine from an existing gasoline saw. The Druzhba or Ural chainsaw is best suited for this.
A handlebar removed from a motorcycle or moped.
Welding machine.
Iron sheets and pipes in the amount required for the construction of the unit skeleton.
Wheels from old technology.
Power train (transmission).

Having prepared all the components of the structure and assembled them according to the drawing, you will acquire a unit with good features.

Powerful. Some handicraft devices have a capacity of 9 horsepower.
Lightweight.
Compact.
Engines used in gasoline saws have a large margin of safety, which makes it possible to work on an artisanal unit for a long time.
Low cost.

As a sample for assembly, let's talk about the engine removed from the Druzhba chainsaw. It is more suitable for our idea.

How to make a walk-behind tractor from a chainsaw with your own hands

With small areas available,
to purchase a walk-behind tractor for big money, in reality, is unjustified.
In addition to the direct device, you have to regularly buy other
required elements:

1. Spare parts;

2. Additional equipment;

3. Lubricants;

4. Combustible substances.

That is why, to facilitate financial
waste is worth trying to independently create a walk-behind tractor from a chainsaw.

Direct active
the process begins with the manufacture of the frame. It has the shape of a cube with angles 32 * 32
millimeter. The main frame is attached to the transverse upper frame corners
engine. The fuel tank is installed slightly lower on the brackets.
The vertical uprights of the foreground have intermediate supports
shaft. In order to install the shaft travel bearings, it is necessary to
to the longitudinal corners, connect specially designed supports.

As a result of all of the above
process, an excellent walk-behind tractor is obtained with a center of gravity located above
wheel bearing surface. Metal weight is quite possible to use
on the front frame element. Using pipe crossbars with diameters of thirty
millimeters, you can get wonderful manual control. Rink
rubberized character can become material for direct
making wheels.

In a walk-behind tractor created by your
hands, two specialized sprockets are used. One of them plays
the leading role, and the second affects the intermediate shaft.

Pros and cons of homemade construction

After analyzing the results of the work of this homemade product, based on feedback from the owners, video of operation, the conclusion suggests itself that the design is effective. With a competent approach to business, a walk-behind tractor with an engine from "Druzhba" is not much inferior in its characteristics to factory counterparts.

The main advantage of homemade products, of course, is the savings in money. You can find the necessary parts and materials simply by rummaging in your garage or shed, or you can purchase it for a small amount of money.

Also among the advantages of a home-made unit are:

sufficient power of the resulting apparatus - up to 4hp;
compactness, small dimensions of the walk-behind tractor;
light weight, maneuverability, mobility;
economical consumption of fuels and lubricants;
the Druzhba engine is not whimsical in terms of the choice of fuels and lubricants;
The walk-behind tractor is capable of performing various operations.

The engine used in chainsaws, especially in the Soviet "Friendship", is hardy and capable of withstanding prolonged loads.

The main disadvantage of a home-made walk-behind tractor from the Druzhba chainsaw is that with any design it will not work to get a real walk-behind tractor. The power of the walk-behind tractor is enough for processing areas with good soil. There are also restrictions on how to perform operations. Most likely, you will not be able to use the entire arsenal of attachments of the factory walk-behind tractor.

Additional units

Before making a light motor cultivator, you will need to prepare the drawings of this unit. The design of the machine made is simple: the motor rotates the gears, transmitting an increased tractive effort to the drive wheel.

To make a snow blower, it is recommended to decide on the design and loads that will be assigned to the machine. If it is necessary to clear a small area of snow, then a self-made snow blower can be equipped with a motor from "Druzhba". To assemble a more powerful unit, you will need a calm engine (power 3 kW).Conventional sled runners are used to create a simplified model.

When carrying out the above work, special attention is paid to the screw assembly. It starts to move due to a gear pair and a chain.

Thick cord rubber is used to make the blades. The intake can be made of galvanized steel. For easy operation of the resulting machine, a sewer pipe is installed under the snow thrower.

How to make a snowmobile from a chainsaw

The snowmobile is manufactured according to one of 2 schemes:

single-track (2 skis in front, 1 caterpillar in the back);
two-track (1 ski in front, 2 tracks in the back).

Any snowmobile device has the following design:

Engine.
Supply system.
Oil injection system.
Transmission.
Chassis.
Steering.
Frame.
Electrical equipment.

Before proceeding with the manufacture of a homemade snowmobile from a chainsaw and its further assembly, it is necessary to design drawings of all working units and the general appearance of the vehicle. It is better to draw each assembly unit separately and take out the dimensions.

In the development process, the brand of gasoline tool is taken into account.

Chainsaw Friendship has a simple design. The disadvantage is the low motor power (1 kW) with a large tool weight (12 kg).

Ural has a weight of 11.7 kg and an engine power of 3.68 kW.

The advantages of the model:

ability to work at low temperatures;
high environmental friendliness.

The choice when making a snowmobile from a chainsaw with your own hands can be stopped on the Calm brand. It is characterized by noiselessness during operation, with a power of 1.5 kW, while it has a nominal weight of only 3.9 kg.

Racks

The initial stage is the manufacture of the base of the frame structure from welded spars. For the middle part, 50x63 mm corners made of hardened steel are used, the front and rear are made of S2 steel with a 90 ° flange. All elements must be provided with holes of the same diameter for mounting with a crawler wheel and a drive shaft. Brackets for road wheels are welded from the bottom of the frame.

Racks are made from corners of 30x30 mm and connected with metal crossbars. The result should be a structure in the form of a small portal. A platform is required for the attachment point of the chain saw gearbox and the chain drive shaft. Choose sheet steel of the required size, often 2-3 mm thick, and weld it to the center of the right side of the module and the portal.

At the back of the portal and at the same time in the middle of the module, a place is formed under the seat, which is subsequently made from boards and fabric or removed ready-made from old technology, for example, a moped.

To the beam, which is taken as a standard water pipe with a radius of 0.75 mm, a front spar and a traverse of the drive axle are installed. At both ends, the steering ski bushings are welded, in the center - the rack for the motor subframe. The attachment points of the supports for the strength and stability of the structure are reinforced with metal 2 mm kerchiefs.

Caterpillar

A mechanism from the Buran unit is used as a caterpillar, the tape is shortened by 0.75-1 m. The gears of the gear transmission are planted on the transverse shafts, then the canvas is laid. The cogwheel of the caterpillar is made of a 15 mm nylon sheet.

Drive shaft

For the manufacture of a drive shaft, a metal pipe with a diameter of 14 mm is taken, flanges are installed on top to fix the teeth of the wheels. At the ends of the mechanism, trunnion tips are pressed in and welded with the provided space for the bearings.

Engine

The snowmobile engine is the most important unit that affects the operation of all self-propelled equipment. Therefore, experts recommend using a power plant from a Stihl chainsaw with an engine power of 1.5-3 kW. The motor is mounted on a stable crossbeam support.The gearbox is turned 180 °, fixed on the site, and the intermediate shaft of a 2-stage transmission is also mounted. A fuel tank is installed on top.

Asterisks

The drive sprocket with an internal key made of St20 is attached to the shaft with an M12 nut with a spring washer. For precise fixation, a thread of the desired parameter is cut on the tip. At the same time, it is taken into account that 1 gear stage corresponds to a large sprocket with a maximum gear ratio (on the engine from the "Ural" there are 38 teeth), 2 steps - a small drive sprocket with 10 teeth.

The chains are of the standard type, with a pitch of about 16 mm.

Brake system

If the snowmobile is designed for driving at low speeds up to 30 km / h, then the braking system may not be provided. Stopping of transport is carried out by friction in the running and transmission systems.

Steering

Control - steering on support-steering skis. The support levers are rigidly connected to the steering shaft bipod. The steering wheel is two-handed, the gas handle is mounted on the right side.

Improvement of the undercarriage

The first thing that users of a walk-behind tractor think about is how to make a cart with a seat for it. The use of equipment in a normal mode with the use of levers involves the application of great physical effort. However, the use of a trailer reduces the stability of the vehicle. This problem can be eliminated by expanding the wheelbase.

This is done using extension cords that are attached to the axle shaft with pins or bolts. Having solved the problem with stability, the operator is faced with another question: the unit is poorly controlled. The differential for the walk-behind tractor helps to give it good maneuverability. This device is made by analogy with the nodes of cars. Homemade unblockers for a walk-behind tractor are made using ordinary household tools - a grinder, welding and a grinding machine.

The light weight of the walk-behind tractor is the reason for poor adhesion of the wheels to the ground. Slipping is common when picking up virgin soil, working on wet ground, or driving on snow. To avoid slippage, weights are attached to the walk-behind tractors.

These devices are categorized as follows:

Wheeled. They are discs that are mounted on wheels or hubs. Discs are made monolithic from metal, concrete or hollow filled with sand. The weight of the wheel weights can be 30-70 kg.
External. They are made of any heavy material (steel, lead, concrete). Attached to the body with hooks or bolts. Some craftsmen weld a frame from a corner to the body. Sandbags, bricks, scrap metal and other heavy objects are placed in it.

You can improve the transmission by installing a homemade variator on the engine. The system of belts and disks will allow you to smoothly change the speed of the unit, without jerking and vibration.

The choice of the power plant

A homemade walk-behind tractor with your own hands can be made from almost everything that could be lying around in the garage, but structurally homemade products will be different. Most often, the following are used as power plants:

an automobile engine (mainly a four-wheeled, powerful structure on a frame, which can also be used to transport goods);
a chainsaw of the "Friendship" type, which, with its small dimensions, has good performance (two-wheeled small-sized design, which perfectly copes with ordinary agricultural tasks);
the power unit of a moped (often "Karpaty"), especially a motorcycle ("Minsk", "Voskhod") will make it possible to make a more powerful two-wheeled home-made product up to 13.5 liters. with;
electrical installations (a walk-behind tractor from a washing machine, for example) are also used, but are not very popular.

The most successful basis is a chainsaw and a motorcycle (moped), which allows you to make a lightweight, simple unit. The difference is in power and dimensions.However, from the point of view of the feasibility of a home-made walk-behind tractor and its economy, the power plant of the chainsaw is undoubtedly better.