Driving through rural (and not only) areas, you can often observe people moving on a bicycle with a motor adapted to it. Such homemade moped is assembled, as a rule, from an old bicycle (it can be "Ukraine", "Sputnik", etc.) and a small gasoline engine.

A homemade moped is assembled from an old bicycle and a small gasoline engine

Most often, a power unit extracted from a friendship chainsaw is used - it is best suited for such a design, plus finding it at a fairly low price does not pose any problems. Of course, as a "base" you can use more modern bike and a motor, however, the feasibility of such a decision from an economic point of view raises some doubts - for the price you pay, it is quite possible to buy a good used Japanese moped without having to do anything with your own hands.

It should be noted that especially for lovers of home-made units, many companies produce motors designed for installation on bicycles - having bought such a kit, you just have to follow the attached instructions. With proper implementation of all points, installation should not cause any problems. We will talk about the option described in the first paragraph - how to make a moped from an old bicycle and a chainsaw (or a lawn mower - this is not so important).

The first thing to determine is the motor power. Engines with a power of 1 h.p. will not be able to set your vehicle in motion on their own, that is, you will have to give it some acceleration, pushing off the asphalt with your feet. 2 h.p. - this is much better.

A moped with a 2 hp engine. will be able not only to start independently, but also to take you up the hill, that is, you can forget about pedals altogether.

For a homemade moped, it is better to use a 2 hp motor.

In addition to the motor, we need a pulley (a wheel from a small children's bike), the belt that will be tightened on this pulley, as well as the set of tools and materials from which you will make the fasteners.

The easiest option is when the motor is mounted on top. rear wheel... In this case, you will have to make your own fasteners, since the bike rack may simply not withstand the weight of the motor. The optimal solution would be steel elements with a thickness of about 3-4 mm. Do not overdo it here - remember that a too powerful frame, firstly, will increase the load on the rear wheel, and secondly, it will increase the total weight of the moped (accordingly, it will be more difficult for the engine to accelerate it).

Try to find a "golden mean" in this matter between the strength of the structure and its weight. Connections in this structure must be made by welding or, if you do not have a welding machine available, by bolts. The second method is a little easier to implement, but less reliable - bolted connections tend to loosen, so there is a certain chance that your moped will simply fall apart one day. The engine itself can be attached to the frame using conventional steel clamps - this is the simplest and most reliable solution.

Video tutorial: how to make a moped out of a bicycle

Next, you need to install a pulley on the rear wheel. As already mentioned, a wheel from a children's bicycle, which has a diameter one and a half to two times smaller than the diameter of your bicycle wheel, is perfect as a pulley. You can also use a gear - in this case, the belt will be replaced with a chain. In general, these two solutions are approximately equivalent, respectively, it is worth choosing the one for the implementation of which you have the materials (or they are easier to get).

When the motor and the belt (or chain) transmission are installed, it remains a small matter - to bring the throttle stick to the handlebars of the bike. For this, a regular cable is used, which can be bought at any hardware or hardware store. On the frame, it is carried out by analogy with how the brake cables go (you can look at the structure yourself, and you will understand everything). The throttle stick can be made from the brake lever - this is the easiest way. Accordingly, you will accelerate by pressing this knob.

As you can see, it is quite possible to make a moped out of a bicycle at home, moreover, there is absolutely nothing complicated in this work. The main thing is, when you are finished assembling - run your moped near your house before driving out onto the road. So you will definitely be sure of its reliability.

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It would seem that absolutely incompatible things will not allow you to get a truly original invention, but in practice this assumption has already been refuted more than once. In particular, for those who do not know how to make a moped, having only a bicycle and a chainsaw from available tools, this article will be very informative.

A moped with a gasoline engineWhat we needWe equip the frameWe make pulleys and install themConnecting the engineAssembling a moped with a gasoline engineWhat we needPrepare the frameCreate the torqueConnect the engineCreate an electric bike Benefits of electrical equipmentA step-by-step guide for assembly

Moped with gasoline engine

If you don't want to refuel the car every day, and riding a bike is too tiring, then a gasoline homemade moped will be the perfect solution to your problem.

What do we need

Nowadays, there are many ready-made kits that include an engine of the required power and other parts necessary for rebuilding a bicycle. Buying such a kit - great option for those who want to become the owner of a bicycle with a motor, but do not have the opportunity to make fasteners with their own hands or choose a suitable engine.

However, there are situations when, despite possible difficulties, I want to do all the work myself. In this case, it is worth starting with the choice of a suitable power unit, for the role of which one of the parts of the old and unnecessary household utensils may be suitable. A lawn mower or a chainsaw is the most suitable donor for a heart transplant, but do not forget about the power of each such unit. So, a homemade moped from a bicycle should be equipped with a 2 hp engine. and a volume not exceeding 50 cm3. A weaker motor will not be able to move the bike, and you will have to pedal for a while.

In addition to the powerplant, you will also need other parts: battery, pulleys and gears, transmission belt (you can replace it with a chain), drive cable and fastening clamps. Of the tools, screwdrivers, pliers, wire cutters and other components of an auto mechanic's kit will be useful.

We equip the frame

The bicycle frame becomes the main location for all parts and elements of a future moped. In particular, the engine, gas tank and battery are attached to it with the help of fastening clamps. The most successful variant of their location is as follows: the battery is on the upper tube, the engine is at the junction of the lower front and seat tube, and the gas tank is located directly next to the motor.

We make pulleys and install them The next step towards creating a moped with our own hands is the manufacture of pulleys - special transmission units, through which the motor force will be transmitted to the rear wheel. As necessary materials small casters (about the size of a CD) can be used, complete with an external barrier. A prerequisite for creating pulleys is the strength of the parts used and the reliability of their fastening.

Installation of these parts on the bike is carried out in the following sequence:

1. The front gear wheel is connected to the motor shaft.

2. The second pulley attaches to the rear wheel hub of the bike.

3. Then the belt is put on the pulleys, setting the tension force as for the chain.

Note! The belt must adhere well to the wheels, since the accuracy of the transfer of power from the engine to the wheel depends on this. In the case when a chain drive is used instead of a belt drive, gears take the place of the pulleys.

Motor connection

After the transmission is installed on the bike, you can proceed to connecting the power unit. For this, its working body is connected to the battery and the "ignition" mechanism is assembled. The motor mounted on the bike is associated with a brake lever, which is also an integral part of the do-it-yourself moped assembly. The tension of the connecting cable must be set so that the motor can start freely through the handle.

Interesting fact! Globally, there are about twice as many bicycles as cars and motorcycles. In addition, 50 million new non-motorized two-wheelers are produced annually, while conventional cars only add 20 million to the ranks.

Assembling a moped with a gas engine

Compared with the previous version, this method will allow you to get a more "advanced" vehicle, which is almost completely consistent with a real moped.

What do we need

To accomplish this task, you will need a gasoline engine itself, spare parts from a real moped (wheels, shock absorbers, brakes and an exhaust pipe), a strong, welded bicycle frame and working tools (including a welding machine). Considering that in this version you are going to make from a bicycle real motorcycle, its frame must have adequate weight and strength.

You can try to find a part from a small moped, but if it doesn’t work out, then a “skeleton” from a bicycle in the style of “Stork” or “Yew” will do.

Preparing the frame

Suppose you could not find a ready-made moped frame, which means you have to strengthen the bike. To do this, you need a welding machine and an additional pipe, which is welded onto the existing structure, thereby connecting the seat and the steering part. However, it must be said that this is not the only possible way to increase strength, and instead of a pipe, iron bars can be used.

Note! If the selected engine is not completely functional, then it should be carefully re-enumerated, replacing the failed elements. Although you still do not fully understand how you can make a motorcycle out of great, the good condition of all the elements used should not cause any doubts.

By the way, the power plant requires a separate space, and the best option would be a welded metal platform located at the bottom of the bike frame. The engine and gas tank are attached to it with metal mounts. It is better to place the battery closer to the steering wheel, and connect the exhaust pipe to the bottom of the engine.

Create torque

The next step on the way to creating an electric bike with your own hands is the organization of the power unit torque transmission system. First you need to remove from bicycle frame pedals and chainring. Then sprockets are installed on the rear wheel from the moped and the motor shaft (the star is located on a wheel with a large diameter). After that, the rear wheel is put on the frame and the stars are connected with a chain.

We connect the engine

After completing all the above steps, it remains only to correctly connect the motor. To do this, the clutch and throttle valve must be connected to the ignition lever by means of drive cables. The tension force is selected so that the motor can start immediately and start spinning the wheel. As soon as you connect the power unit, consider that you have already succeeded in making a bike on a motor.

It is no secret that vehicles equipped with an engine will move faster than a regular bicycle, therefore, for safety reasons, it is worth installing lighting devices, and the driver himself must use a helmet, knee pads and special shoes.

That's all. Another answer to the question "How to make a motorbike with your own hands?" I'm ready now.

Do you know? Cycling helps you stay in top shape. For example, cycling for an hour can help you lose 600 calories.

Building an electric bike

If you don't like the idea of ​​using a gasoline engine on your bike, then you can consider an alternative electrical upgrade to your vehicle.

Benefits of electrical equipment

The advent of modern electric vehicles has allowed humanity to appreciate all the advantages of this type of transport. An environmentally friendly and economical car almost immediately gained worldwide popularity, it is available to "tell" motorists about all the privileges of using electric motors. Therefore, it is not surprising that many people were interested in the question "how can you make an electric bike out of a bicycle?"

The electric engine runs quieter, does not emit harmful exhaust gases into the atmosphere and does not heat up as much as its gasoline counterpart.

In the case of a home-made electric bike, the role of the engine can be played by a car starter, screwdriver, or any other power plants available on the farm.

Along with the electric motor, an important component of the already converted vehicle is the controller (or regulator), the task of which is to accelerate the moped bike under optimal operating conditions of the power plant. To start the movement, a very small current flows from the controller to the motor, due to which the motor starts to rotate smoothly. In a braking situation, the regulator recovers the driving energy in electricity supplying the battery. The battery is practically the same fuel tank, but much more environmentally friendly. It often consists of a matrix and batteries connected to a specific circuit.

The simplest homemade e-bike includes only a motor and a battery. After installing the motor, it can be energized using a conventional switch. However, you should be aware of the impracticality of such an approach, because, having a powerful power plant, starting on such a vehicle is somewhat more difficult, and this can lead to an accident. It is better to use a low-power unit capable of providing a slow start to movement, even if it does not accelerate to serious values.

Step-by-step guide to build

There are quite a few ways to assemble an e-bike, but the easiest way is to connect the drive to the tire. If you had a Soviet-made bicycle, then you probably came across a dynamo to connect a headlight. The same principle is used to connect the electric motor to the wheel. Of course, when using this method, the drive efficiency will be very small, but for testing a vehicle on electric traction, this is quite enough.

The second option, how to make a good electric bike with your own hands, involves the installation of an additional star on left side wheels and engine mounting with a star on the trunk. If we connect them with a chain, then we get the simplest chain drive. However, as in the previous version, there will be mechanical losses, and appearance it is not particularly attractive.

Therefore, it makes sense to consider the third and most suitable way of converting an ordinary bicycle into an electric bicycles. It provides for the use of a special motor-wheel, which allows you to get an electric motor for a bicycle with an excellent aesthetic appearance and high efficiency, which will make it possible to create a unique vehicle with your own hands. The motor-wheel differs from a conventional wheel by the presence of a drive mechanism in the central part. It connects to the control unit using wires and allows you to create a front-wheel drive bike, without changing the classic transmission.

If there is a desire and opportunity, you can install two motor wheels at once. The installation process includes the following steps:

1. Mount on the carriage axis new star and a belt pulley;

2. Then the shaft with the drive pulley is attached to the seat tube;

3. The pulleys are connected to each other with a belt, and through the wires the shaft is connected to the power source;

4. The wires from the battery are routed to the steering wheel switch.

Note! The battery is best placed on the lower front tube of the frame or on the trunk.

Summing up all of the above, it should be noted that it is still possible to assemble an electric bike in the “do it yourself” style, but for this you need to find all the necessary parts, spend a little time and nerves. The very operation of such a vehicle should not be accompanied by any difficulties, of course, except for the surprised looks of passers-by, which, however, is rather a compliment to you.

Interesting to know! When boarding a bicycle, most people approach it from the left side, throwing right leg, which is explained by the presence of a chain and a star on the other side. The habit of placing the chain on the right side came from horseback riding, since the epee, located at the rider's left thigh, made it difficult to land on the right.

A moped, like a bicycle, is a very convenient vehicle. Moreover, it drives faster than its older brother, thanks to the built-in drive. The ability to move quickly without much effort is not every cyclist's dream? It is quite possible to bring it to life - to equip your bike with a gasoline engine or an electric motor.

Assembled moped from a bicycle is a fairly common phenomenon in rural areas or regional towns. It is there that they like to apply innovative ideas in practice, in particular, to make a smart and economical transport out of an ordinary old one. Have you noticed a similar interest in yourself? Then it's time to get down to business!

Option 1: how to quickly assemble a moped with a gasoline engine

Before you start creating a new moped from a bicycle, you need:

• a bike;
• gasoline engine and gas tank;
• battery;
• pulleys or gears;
• transfer belt or chain;
• drive cable;
• fastening clamps.

Recommended power - 2 HP with., and the volume of the engine should not exceed 50 cubic meters. see. A weaker engine will not allow you to move the bike; you will have to pedal for a while. An engine of sufficient power can be taken from an old moped. Other options are with a chainsaw or lawn mower.

The working unit of the engine, the gas tank and the battery are securely fixed to the frame using fastening clamps. Convenient location:

• on the upper tube - battery;
• the joint of the lower front and seatpost tubes - the engine;
• next to the engine is a gasoline tank.

The next step is to make pulleys - special transmission units through which the engine power will be transmitted to the rear wheel. The starting material for the pulleys can be small wheels with external barriers, about the size of a CD. Mandatory conditions- material strength and reliable fastening.

Installing pulleys with your own hands on a bike:

1. The front gear wheel is attached to the motor shaft.
2. The second pulley is attached to the hub of the rear wheel of the bicycle.
3. A belt is put on the pulleys. The tension force is approximately the same as that of the chain. The belt must hold firmly to the wheels, it depends on how exactly the engine will transmit the force to the wheel.

If a chain is used instead of pulleys, gears are placed on the motor and wheel.

So, the transmission is ready, now we turn to connecting the engine:

1. The working motor housing is connected to the battery.
2. Assemble the "ignition" mechanism: an ordinary brake lever is attached to the steering wheel, then through a cable it is connected to the engine body.
3. Set the tension so that the motor starts freely through the handle.

Option 2: collecting a moped with a gasoline engine

This is an advanced method, and the result is more like a real moped. To make it, we need:

• gasoline engine;
• moped parts: wheels, shock absorbers, exhaust pipe, brakes;
• proven bike frame;
• tools.

Since here we are already going to get a real moped, the frame must have increased strength and weight. Also, on mopeds, the frame design is slightly different, because of which it may have to be redone a little.

Wheels from a moped are put on the frame. The fork will need to be redesigned as the width of the wheels will be wider than the distance between the dropouts. Install shock absorbers on the fork if possible.

Carefully sort out the power unit of the moped and replace all defective parts. The propulsion system will require a separate space, for this a welded metal platform at the bottom of the frame would be a good option. The engine and fuel tank are secured to the site with metal mounts. It is better to place the battery closer to the steering wheel. An exhaust pipe is connected to the bottom of the engine. The pipe must be firmly fixed to the frame so that it does not dangle while driving.

1. Remove the pedals and chainring from the bike frame.
2. Install sprockets on the rear wheel from the moped and the engine shaft. A star on a wheel with a larger diameter.
3. Slide the rear wheel onto the frame.
4. Use a chain to connect the stars.

Motor connection. The clutch and throttle valve are connected to the ignition lever via drive cables. The tension is selected so that the engine can start immediately and start spinning the wheel.

Brakes. If only one brake can be enough for a bicycle (say, the front one), then here it is better to play it safe and install them on both wheels. The rear can be used as the main, and the front as an auxiliary, to adjust the speed.

In general, a homemade bike-based moped would look like this:

Converted bike

Since a vehicle equipped with an engine moves faster than a regular bicycle (for this, a redesign is thought), for safety reasons, it is necessary to put lighting devices on it. Personal protection items - helmet, knee pads and special footwear.

How to make an electric bike

If you have no desire to fool around with a gasoline engine, there is another option - to put an electric motor. It can be purchased or installed from another device. The first option for creating electric mopeds is preferable, since the required power is already provided in the engines.

Installation options - a motor-wheel and an independent engine on a chain or belt drive.

The motor-wheel differs from the usual one by the presence of a drive mechanism in the central part. With the help of wires, it is connected to the control unit. A significant advantage is the ability to make the bike front-wheel drive without making changes to the classic transmission. And if you wish, you can even put two motor wheels. Installation is easy enough, provided the bike itself allows it. However, to moped bike with such wheels can be attributed with a big stretch.

Wheel motor kit

An electric moped is a completely different matter, that is, an analogue of the one discussed above. Of course, an exhaust pipe will not be needed here - this is a plus both in terms of reliability and total weight.

Assembling an engine from scratch at home will be problematic, so we will consider how to put a ready-made shaft-motor.

Progress:

1. Install a new sprocket and a belt pulley on the carriage axle.
2. A shaft with a drive pulley is attached to the seat tube.
3. The pulleys are connected by a belt.
4. Through wires, the shaft is connected to a power source.
5. Pull the wires from the battery to the steering wheel switch.

The location of the battery is on the lower front tube of the frame or the trunk. Electric motor operation diagram:

1. When the electric motor is turned on, the rotating roller engages the rear wheel cover, pushing it.
2. The pulleys and the front sprocket transmit torque to the transmission.
3. A gear change will cause a change in output torque. In this case, the speed of rotation of the roller is kept constant.

DIY electric bike:

Additionally, you can connect the second shaft to the front wheel by connecting it to the driven pulley of the main gear.

The engine allows you to reach the optimum speed faster and maintain it for longer. A bike-based moped is a budget option to own a faster and more powerful vehicle. The transformation of a bicycle into a moped in most cases does not make irreversible changes to the design, so it is possible to return everything to its place.

This article will focus on how how to make a moped out of an ordinary children's bike (mini-mokik)... We will do everything ourselves, with our own hands, without using complex mechanisms and machines.

The mini-mokik moped was based on an ordinary children's bicycle (Fig. 1). Taking into account the difficult operating conditions (speed - up to 60 km / h), the frame and wheels of the future mokik were reinforced. A subframe made of a 27 mm tube was welded between the seatpost and the head tube. In addition to reinforcement, the subframe serves as the basis for attaching a 2.5-liter gas tank. Rear part the frame of the moped is reinforced with two jibs from a pipe with a diameter of 12 mm. On the front wheel mini-mokika instead of 12 standard spokes, 6 steel strips with a section of 4x20 mm were welded, 3 on each side (like spokes). And on the rear wheel of a homemade moped, the number of spokes was increased to 32, like on an adult bicycle.

The D-8 engine is installed on the mini-mock. To increase the power at the intake (between the engine and the carburetor), an additional valve was placed (photo 1), and the height of the combustion chamber was reduced by 2.5 mm. As a result, 3 liters were obtained. With.

The valve body (Fig. 2) is a cylinder with a diameter of 50 mm and a length of 46 mm, made of D16T duralumin. Three channels with a diameter of 13 mm are drilled in the body: the central one, facing the carburetor, and two inclined ones, which enter the central one. Part of the mixture from the carburetor through one of the channels directly enters the engine spool, and the other part through the channel on which the valve is installed, when discharged, rushes into the engine crankcase. The valve plate (D16T foil 0.3 mm thick) is slightly spring-loaded towards the carburetor. A spring with an outer diameter of 17 mm made of thin 0.2 mm wire 65G has 3 turns. Along the perimeter of the sample for the valve, 18 holes with a diameter of 3 mm were drilled. These holes facilitate the passage of the mixture after opening the valve. The additional volume of the mixture arising during the bypass creates excess pressure in the compression chamber, creating an additional torque on the crank mechanism during fuel combustion and thereby increasing the engine power.

Manufacturing of the valve body should be started with turning (turning, trimming the ends, drilling a central hole to a depth of 15-16 mm, turning a groove 7 mm wide to a diameter of 18 mm). After that, mark the centers of the inclined channels, keeping the dimensions 10; 16 and 12 mm. Mark and drill 18 holes with a diameter of 3 mm to a depth of 9-10 mm around the last center 22 mm in diameter. This operation should be carried out very carefully, keeping the center-to-center distances as accurately as possible, since damage to the bridges between the holes (approximately 0.8 mm) during operation can lead to breakage of pieces of metal, getting them into the crank mechanism (KShM) and exiting building the engine of a homemade moped. For the same reason, after the final machining of the valve body, to remove the smallest particles of shavings, it should be blown with compressed air, followed by a vacuum cleaner and a magnet.

Before starting the processing of inclined canals in the places where their centers are marked, it is necessary to drill 2-mm indentations with a diameter of 10 mm. Then fix the part firmly in a machine vise at an angle of 18 ° and process the first channel (on the spool) in two passes with drills with a diameter of 6 and 13 mm until it reaches the central one. (And it is even better to process the channels in the valve sequentially with a drill, a countersink and a reamer, thus ensuring not only accuracy, but also a high purity of the channel surface. - Ed.) With the body turned 45 °, drill the second (valve) channel. Then, on a vertical milling or boring machine, process the recess for the plate and spring with a boring head with a diameter of 19 mm (to a depth of 8 mm), keeping the size 12 mm (to the center). Finally, machine the mounting holes and the groove (7x110 °) that is necessary to place the protrusion on the cylinder. The valve is attached to the carburetor on its standard studs. But to dock with the cylinder, special bolts had to be made (Fig. 3, photo 1), since there was not enough space to tighten the bolts with ordinary hex heads with wrenches. A heat-resistant sealant is applied to seal the joint between the valve and the cylinder.

The standard muffler of the D-8 engine on the mini-moike was replaced with a new one (Fig. 4), home-made with a body made of a thin-walled pipe with an outer diameter of 48 mm. The muffler has 3 compartments. Exhaust gases enter the first compartment through 23 holes with a diameter of 5 mm at the end of the engine intake pipe welded into the inlet end of the muffler. From it through a perforation (30 holes with a diameter of 4.5 mm) in the first internal partition into the second compartment. And in the third - along the inner pipe through 45 inlets with a diameter of 3.7 mm and 100 outlets with a diameter of 2.5 mm.

And the last stage of exhaust - from the third compartment to the outside - through the outlet pipe. The new muffler reduced the sound power, albeit slightly, but still raised the power and maximum speed of our engine.

The drive to the rear wheel of the moped moped is carried out by a roller chain with a tension roller (Fig. 5) through a homemade 24-tooth sprocket made of 40X grade steel sheet 4 mm thick.

Rough processing was carried out according to the marking on a vertical milling machine with a 4-mm finger cutter, the final one - with a round file. The sprocket is attached to the rear wheel hub flange with M6 bolts. On the side of the spokes, there are special segment washers with rubber gaskets, like a motor bike (photo 2).

Our homemade mini-moped moped, made by hand from a bicycle, starts up from the rotation of the pedals.