Dear visitors to the site “Visiting Samodelkin”, from the material presented by the author, you will learn how to make a moped yourself from a Druzhba chainsaw.

From Soviet times, many still remember such a miracle of technology as a bicycle with a motor, in common parlance a “hole” is the middle link between a bicycle and a full-fledged moped. The equipment is good, low fuel consumption, and you don’t need a license)).

The current generation is much more advanced in terms of modernization, improvement, restoration, and tuning. They remake factory equipment so that the designers do not recognize their brainchild))

So the author came up with the idea of ​​making a moped from the Druzhba chainsaw, but so that it would not look like a homemade product, but would look stately and elegant. The master already had experience in creating such equipment and had a ready-made moped, on its basis this masterpiece was created.

The frame was extended to accommodate bicycle wheels, a tank, headlight and seat from the Minsk-103 motorcycle were installed. Water cooling of the chainsaw engine was developed and used, because after 20 minutes of operation the engine got hot, the power dropped and, as a result, the work stopped, and due to water cooling the moped feels great and doesn't get hot.

So, let's look at what exactly the author needed to create a moped?

Materials

1. engine from the Druzhba saw
2. bicycle wheels 2 pcs.
3. tank, headlight, seat from the motorcycle "Minsk-103"
4. 4 cans of paint and masking tape
5. metal pipe 16-20 mm
6. cable
7. chain
8. bicycle sprockets
9. bicycle forks, front and rear
10. axis
11. hose
12. plastic bottle
13. dropper
14. steering wheel
15. throttle handle

Tools

1. welding machine
2. grinder (angle grinder)
3. drill
4. set of wrenches
5. hammer
6. screwdriver
7. pliers
8. roulette
9. sandpaper

Step-by-step instructions for creating a moped from a Druzhba chainsaw with your own hands.

As mentioned above, the author already had experience in making a moped with a chainsaw engine, but the design was not so successful, and the maximum speed was about 35 km/h, the appearance also left much to be desired. The author affectionately calls his brainchild “Stool”))

I wanted to create something more interesting and practical, and in appearance it would look like a real moped or chopper, so that it would not be a shame to ride on such a vehicle on the street, but on the contrary, to catch the smiles and admiring glances of passers-by) This one was taken as an example and basis "bobber"

After that, a sketch was drawn up on a piece of paper with a regular ballpoint pen, and everything that needed to be radically changed and added was drawn.

What remained of the old frame was the lower part welded from professional pipe; bicycle wheels and rear and front forks were added to the new design. During the first day of work, the author welded the frame, installed the tank, headlight, and wheels.

All the parts were naturally old and even rare, the welds also needed to be cleaned, and then the prepared surface was painted in several layers with periodic drying with spray paint, the master used Montana paint.

Also, after painting, when the frame had dried, another layer of matte varnish was applied, also from a spray can.

The bicycle wheels were also old; it was also decided to paint them; first, the rim was sealed with masking tape and the wheel spokes were painted.

The wheels were also painted and hung on a rope to dry faster.

I assembled all the painted parts into a single structure and this is what happened.

But after working for several days, the engine unfortunately died, because it was also very ancient and probably its natural time had come to go for spare parts and remelting.

The engine was good, but I had to part with it.

In its place, I installed a new engine from the same Druzhba chainsaw, only newer from 1992, it had been stored away since the winter and now its finest hour has come)

As they say, “Oh, trouble, trouble, disappointment.” What to do? First of all, the author changed the gear ratio on the chain gearbox, consisting of bicycle sprockets and a chain.

It didn't help much, so that's not the reason. And then the idea came to water-cool the chainsaw engine. But how can this be implemented? In general, the author does the following, namely, he takes a plastic bottle and connects 2 hoses to it, one in the upper part for air intake, and the second in the lower part for supplying water through a dropper to the cylinder head of the Druzhba chainsaw engine. This kind of drip irrigation)) But according to the author, the engine has stopped heating up at high speeds and feels great.

Why did the author come up with such a wonderful moped with a chainsaw engine and water cooling?

The master also took and shared beautiful photographs of his brainchild, let's take a look)

As you can see, you can easily assemble a cool moped from old spare parts yourself, and you can also solve the problem of overheating by installing a water dropper. If you have spare parts from rare

Engine, today it has become much easier to do this. At the moment, there are already ready-made solutions for such modifications; for example, you can buy a ready-made kit and all you have to do is install it on your bike. That’s it, after this the “great” will turn into a small moped, capable of driving up to 50 km/h, or even more.

Such transport is beneficial for those who often go to the country, to fishing, to the village, to the garage, if it is far away. On such a bicycle moped, fuel consumption will be minimal; there is probably no other vehicle that would consume even less fuel. In addition, even if you run out of gas, you can get to your destination in the classic way, using pedals.

Another advantage of this type of equipment is that it does not require a driver’s license, because in fact it is still a bicycle, since you can only turn on the engine outside the city.

Specifically, this article will discuss how you can install a chainsaw engine on a bicycle. Many people have unwanted chainsaw motors or even old chainsaws lying around in their garage. A motor from a lawn mower is also perfect for this purpose.

Materials and tools for homemade:

1. First of all, you will need an engine. The more powerful it is, the faster the bike will go. On average, today there are chainsaws with a power of 1.5-2 horsepower, this power is quite enough to ride a bicycle moped at a speed of about 30-40 km/h.
2. Capacity for creating a gas tank. It is best, of course, that it be made of metal, it will be safer. But you can also use plastic containers.
4. Bicycle cable and throttle handle to control the throttle.
5. Wires and switch for connecting the engine ignition.
6. Bolts, nuts, elements to create a bracket with which the engine will be attached to the frame.
7. Pulleys, belts, chains and other elements thanks to which the bicycle wheel will be connected to the engine.

The process of equipping a bicycle with a gasoline engine:

Step one. Deciding on the type of motion transmission
Perhaps the most difficult thing in this homemade product is to transfer movement from the motor to the wheel. Here it is important to correctly calculate the gear ratio. If the gear ratio is small, the motor simply may not be able to handle such a load and the bike will not move. If the gear ratio is too large, the bike will ride very slowly, and the engine, operating at high speeds, will overheat.

You can calculate the gear ratio using the example of one of the authors who managed to assemble a similar technique. With an engine power of 1.78 horsepower and a speed of 12,500 rpm, it used a gear ratio of 1:26. The chainsaw used was a Homelite CSP3314 model.

The easiest way to transfer movement from the pulley to the wheel is directly from the motor, that is, according to the same principle as a dyno works. If you approach the process more professionally, then the rear wheel is equipped with an additional sprocket or pulley, and then connected to the engine using a belt or chain. Of course, it is best to use a belt drive, since the chain can fly off with such homemade products, and in general it is unsafe.

Step two. Clutch
Clutch is also a very important element in this type of transport. There are two options here on how to do it. The chainsaw already has a centrifugal clutch, that is, it is a clutch that automatically engages at certain speeds. So the wheel can simply be connected to this clutch, this is the simplest option.

Some other DIYers do not use the saw clutch, but connect it to a bicycle ratchet. This system works very simply: after accelerating and releasing the gas, the bike rolls by inertia, while the ratchet is not interconnected with the wheel. That is, having “turned the lawn” once, you can then roll in a straight line at idle for a very long time.

Step three. Installing a gas tank and connecting the control system
The gas tank can be installed directly next to the engine, but for safety it is best to place it on the frame. But in this case, you will need a hose that needs to be pulled along the frame to the engine.

As for the ignition, everything is simple here, you need to stretch the ignition wire from the engine, and make a switch on the handle so that the engine can be turned off if necessary.

Also, to control the engine, you need to make a throttle handle; it can be borrowed from mountain bikes (buy ready-made). You need to remove the lock from the handle so that it moves smoothly, and then connect the cable to the carburetor throttle valve.

"From the presented material you will learn how to make your own moped from a Druzhba chainsaw... Today, the popular topic is creating various bikes and bicycles with engines from a chainsaw, where they mainly use domestic samples of the Druzhba or Ural brands. But the author wanted to make something more elegant than just a homemade one, so that it would look more like a real moped or chopper. I already had experience in assembling a moped last year, but I wasn’t very happy with the appearance. The new model will have bicycle wheels and, to give a cool look, a tank, headlight and seat from the rare Minsk-103 motorcycle will be installed. The author also developed and implemented a water cooling system for the chainsaw engine, it consists of the following: a bottle of cold water is attached to the frame and 2 hoses go from it, one upward for air intake, and the second is connected to a dropper and through it drip irrigation is carried out on the cylinder head, thereby cooling it. The bottle itself is removable and fastened with rubber bands to make it easy to remove and refill with cold water. The dropper can be opened and closed, you stand still, closed it, went and opened it)

Let's figure out what exactly is needed to create a moped from the Druzhba chainsaw

Materials

1. chainsaw engine
2. bicycle wheels 2 pcs
3. tank. headlight, seat from the Minsk 103 motorcycle
4. pipe 16-20 mm
5. bottle, hoses, dropper (for water cooling system)
6. chain reducer
7. spray paint

Tools

1. welding machine
2. Bulgarian
3. sandpaper
4. screwdriver
5. set of wrenches
6. pliers

Step-by-step instructions for creating a moped from a Druzhba chainsaw.

A dream and a model from which the moped was copied.

I sketched a sketch of the future moped.

I welded the frame and tried on bicycle wheels.

Painting the frame, wheels and spokes.




I installed the engine from an old moped.

But soon the engine died and a new one had to be installed; the author had it in stock from the winter)

Then the author encountered a problem after 20 minutes of operation, the engine overheated and stalled, so he changed the gear ratio on the gearbox.
The engine did not stop heating up and the author came up with the idea of ​​water cooling the engine. Why I took a plastic bottle and connected 2 hoses to it, one up for air intake, and the second connected to a dropper for supplying water to the cylinder head of the Druzhba chainsaw

Now the engine does not heat up and works normally, the speed reaches about 60 km/h, but on the old moped it accelerated to a maximum of 35 km/h.

This is such a wonderful and elegant moped)

If you have a craving for experimentation and would not refuse the opportunity to turn your bicycle into a homemade moped that can accelerate to 50 km per hour and above, this instruction is for you.

Using simple spare parts, you can build a bicycle with a chainsaw motor with your own hands. Let's get started!

1. Carefully inspect and. The proposed modernization will significantly increase the load on all its parts. Therefore, every part must be inspected and well lubricated. Also check all fasteners and re-tighten the bolts. In addition to constructive necessity, all these actions are the key to your safety.
2. You can make a bicycle with a chainsaw engine or a trimmer engine (also called a gas trimmer). If you are wondering how to adapt a motor from a lawn mower to a bicycle, then there is nothing complicated here. A gas mower is suitable for this design in the same way as a chainsaw. If you choose a chainsaw, make sure that its power is at least 2 kW. And if you have a trimmer, then 1 kW of power will be enough, since the lawnmower engine has a lower speed. The point is that you need to get enough traction to get moving. But at the same time, a more powerful engine means more weight. You need the motor weight to not exceed 6 kg, otherwise the bike will sway noticeably on the road.

1. Check the engine for functionality. A bicycle with a chainsaw engine will, of course, roar loudly - we believe you are ready for this. Most likely, your neighbors and random passers-by will not be ready. Therefore, we recommend that you conduct your tests far from human habitation - in a forest, in a park, on a country road.

Pay special attention to checking the condition of the gas tank. Gasoline must not splash out, as this creates a fire hazard. The engine will be behind you, so you should pay special attention to this point.

1. Now let's find out how to install a chainsaw engine on a bicycle. It is necessary to make room behind the cyclist, above. To do this you will have to remove the wing. The easiest way to use this scheme is to install a drive shaft, and use a tire instead of the driven shaft. This type of drive is the simplest and most effective; the design does not require the use of a large number of parts. The friction shaft will transmit rotation from the engine; for this, the shaft diameter should be approximately 25 mm.

1. To install the engine on your bicycle, weld a metal stand to the frame located under the seat. you need it as low as possible, then your vehicle will be more stable in motion. You can secure the motor to the stand in any way - bolts, clamps or welding.
2. The throttle cable and wires that will allow you to forcibly turn off the engine must be carefully secured to the frame. This is a matter of comfortable riding and cyclist safety.
3. Ready! You can try out your new bike with a chainsaw motor. Keep an eye on it, it should be at least 3 atm.

Are there ready-made solutions?

Yes, everything can be much simpler if you purchase a ready-made set of parts to make a bicycle with a chainsaw engine. In addition to the engine itself, ready-made kits contain all the necessary fasteners, as well as a throttle cable, a power control handle, a forced engine shutdown button and other useful parts.

Conclusion

The dream of all the boys who puzzle over how to install a chainsaw engine on a bicycle can come true in adulthood. Now you have the opportunity to show your engineering ingenuity and assemble the exotic design described above by attaching a chainsaw motor to your bicycle with your own hands. In addition, this is a useful device: such a vehicle can be used for destinations without much stress - fishing, to the dacha, to the store, and most importantly, fuel consumption will be minimal. And even if you run out of gas, you can reach the end point of your journey in the traditional way - using pedals.

A moped, like a bicycle, is an economical and convenient means of transportation. This vehicle travels faster due to the presence of a drive. Every cyclist's dream is to move quickly, effortlessly. It is possible to make your dream come true: you just need to equip the bike with an engine.

Let's look at how to properly construct a moped from a chainsaw using available materials and parts.

How to make a moped from a chainsaw and a bicycle

You should start by finding a suitable motor. The heart of a chainsaw is suitable for this role. Use Friendship. Remember power. A homemade moped will not be able to move if the engine power is less than 2 liters. With.
To create a bicycle with a chainsaw motor with your own hands, you will need other components:

• battery;
• pulleys, gears;
• transmission belt or chain;
• drive cable;
• clamps for fastening;
• tools: screwdriver, pliers, etc.

The main place where the elements of the future unit will be placed is the bicycle frame. Here, the battery is mounted using fastening clamps on the top pipe, the engine is mounted at the junction of the pipe passing under the saddle and the front bottom pipe, and the gas tank is nearby.

The next step in assembling a bicycle with a chainsaw engine is the manufacture of transmission wheels and pulleys. With the help of these elements, the force created by the motor is transferred to the rear wheel.

Use wheels with an external stop the size of a music disc to create pulleys.

Do not forget about the strength and reliability of fastening parts.

Assembly of the moped continues, we mount the assembled parts:

1. We connect the front transmission unit to the engine shaft.
2. We attach the second pulley to the rear wheel hub.
3. We put a belt on the transmission units. If using a chain, use gears instead of pulleys.

Having installed the chainsaw motor on the bicycle, we proceed to the connection. We connect the working compartment of the engine to the battery and install the ignition mechanism. An integral step in assembling a moped is connecting the handle for the brake and the motor. Adjust the tension of the connecting cable so that the handle starts the engine easily.

See » How to make your own snowmobile and other homemade products from a Druzhba chainsaw

Chainsaw ignition for a motorcycle

Chainsaw spare parts are also used to modernize outdated or in need of repair vehicles, such as a motorcycle. To improve this vehicle, a saw ignition system is often used.

You will need:

• flywheel;
• flywheel spacer with key;
• fan;
• coil with high voltage wire;
• aluminum plate for attaching the coil;
• bolts, nuts.

Chainsaw ignition is suitable for Ant and IZH Planet motorcycles. Unlike a magneto, this ignition is reliable and durable, and is not afraid of shaking and water.

For proper assembly of a moped with your own hands, reliable service, for remodeling and designing other equipment, listen to the advice:

1. Before assembling the motorbike, make sure that the main part - the bicycle - is in optimal technical condition. Modernization will increase the load on all its parts.
2. Check the condition of the gasoline tank carefully. Fuel should not spill out, as this may cause a fire.
3. In addition to engine power, don't forget about volume and weight. The volume should not exceed 50 cm³, weight - no more than 6 kg.
4. When installing the belt, make sure that the part is held firmly on the wheels, otherwise the accuracy of the impulse transmission from the motor to the wheel will decrease.
5. Using a chainsaw motor, you can independently design other equipment: a go-kart or a tricycle. You will have to make an effort: weld a strong metal frame, prepare a working gearbox.
6. With a strong frame, gearbox, driver's seat, wheels with a diameter of at least 35 cm and a saw engine, try to construct an ATV.