How to make a moped from a trimmer

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Mountain bike with a motor - the theme is in the air.
However, in metal it is embodied either in the form of concepts, or is built by enthusiasts (the French were especially successful in this). Mountain bike with a motor - the theme is in the air. However, in metal it is embodied either in the form of concepts, or is built by enthusiasts (the French were especially successful in this).

Like many, I started my journey with the legendary “deshnik”, which I put on the teenage bike “Tisa”. The device turned out to be funny, but it was accompanied by a gasoline stink in the apartment, dirty hands and a shaman's tambourine to exorcise evil spirits from the carburetor and ignition. The device did not perform utilitarian functions in any way.

But one day I was lucky enough to ride a mountain bike with a motor from a trimmer (lawn mower) and a belt drive. Although it was winter and I did not ride for long, I experienced a culture shock! In frost, the engine started up perfectly both cold and warm, pulled perfectly, was perfectly clean and did not stink at all. And the "maximum speed" of 55 km / h with such traction "deshnik" never dreamed of!

In general, a belt kit was soon purchased with a two-stroke motor from a 1.5 hp trimmer. plus a stronger mountain bike. Fortunately, there was no limit, but only until the first rain ... It turned out that the drive belt loses strength and breaks when wet, changing it on the road is not very convenient, besides, the cost of a new one bites. Rain in Moscow is not uncommon. But I was already used to riding such a comfortable motorbike and didn’t want to give up the idea, I decided that the chain and only the chain would save the “father of Russian democracy”!

The required gear ratio forced the use of a driven star almost the size of a bicycle wheel, but, fortunately, there was a gearbox from a Chinese minibike that fit perfectly on the trim motor and made it possible to use sprockets of the usual sizes. The drive components are public bicycle ones: a single-speed wide chain, a 51-tooth star from a KhVZ bicycle and a freewheel (overrunning clutch with an asterisk) from BMX, as well as a bicycle brake handle as a gas trigger.

In addition to purchased parts, there are many original components in the design. These are steel racks that are attached to the bicycle frame, a motor mount (holds a gearbox with a motor), a chain tensioner with caprolon rollers, a driven star mount on the wheel, an adapter from the gearbox shaft to the freewheel. He designed the details himself, and made them at a nearby defense plant.

Of course, it was not possible to assemble the ideal design the first time, I treated children's sores for another year. I selected the optimal materials and design solutions, tried different layouts, and rode, rode, rode ...

What happened in the end? Ultralight (curb weight - 25 kg) motor vehicles with a maximum speed of 55 km / h, dynamics at the level of simple Chinese scooters, fuel consumption of 2 liters per 100 km (power reserve on one tank 50 km), which does not stain oil at all and does not smell of gasoline . The absence of smell and dirt helps me save money on a garage or parking lot, the motorbike is in the apartment and does not bring discomfort to the family at all. Particularly pleased that all the "pedal" functions are fully preserved. It remains to shift gears and easy pedal travel (thanks to the “freewheel”), with a lack of traction, the motor can always be helped by pedals and drive up any hill. The running of a modern mountain bike is very strong and reliable, disc brakes provide very confident braking, and large wheels make it easier to overcome our “directions”.

After completing the design improvements, I have already driven more than 4000 km and during this time I have only changed the drive chain once, the spark plug twice, and once I cleaned the fuel system - a good indicator of reliability and unpretentiousness.

For lightness and daring agility, I called my motorbike "Hare". Now I drive the "Hare" every day to work, and in traffic jams it has no equal. It's so narrow and agile that during rush hour I get home faster than before on a motorcycle, and the fare is ridiculous. There were also small trips, trips out of town, even from Moscow to Yaroslavl. But a motorbike, of course, is not for the track - it’s not comfortable to “beat” on it, but in the city and country trips I can’t imagine the best transport for myself!

Trimmer engine bike

In the world of cyclists, it is difficult to surprise someone with this or that technical sophistication. A bike with a trimmer engine has also ceased to be news in the bicycle market. Such bikes are good as the main means of transportation around the city. They will perfectly fit into the village or country life: neither the possible noise nor their relatively high speed will embarrass anyone there. Bicycle innovation with a trimmer engine is actively gaining the sympathy of riders. There are reasons for this.

Benefits of hybrid bikes

Such bicycle hybrids have many advantages over conventional two-wheeled bikes:

• they are able to quickly gain high speed;
• electric motors run on current that can be created using a trimmer (this is economical, environmentally friendly and convenient);
• maneuverable and compact (indispensable qualities in endless city traffic jams);
• hardy;
• cheap to complete and repair (all parts for assembly are sold in specialized stores or through advertisements);
• caring for them is simple: the main thing is that the engine always remains dry;
• ergonomic (a bike with an easily removable trimmer motor can be stored not only in a car garage, but also at home).

Among the shortcomings, one can single out a slight noise produced by the trimmer, but with the right connection, this sound can be reduced to nothing.

Issue price

Of course, not everyone can buy such a bike. Bikes with such equipment are quite expensive (their price can be more than 100 thousand rubles). There are cheaper models that go on sale due to the fact that manufacturers are trying to save on bike frame material. It is clear that such bikes will not last long. If desired, the trim motor can be purchased separately and attached to the bike yourself.

For example, you can install a motor-wheel, which is sold complete with throttle and brake handles, a controller, and a Pas system.

By design, it does not differ too much from a conventional mortar, it is installed on one wheel or on two at once. Attaching it is easy: the installation is considered complete after the battery and throttle lever are attached. However, such a wheel will also cost a lot.

The most budget option is to put the engine from the trimmer with your own hands. A motor from an old moped is also suitable. You don't need to push yourself too hard, but accuracy and patience will come in very handy.

Before proceeding with the operation of refitting a bike, you must select the type of engine. He can be:

• gasoline;
• electric.

The advantage of the first is that it does not need a battery, there is no connection to the mains. It is better to pay attention to medium power engines (about 15.-2 horsepower). Suitable for velobike and two-stroke, and four-stroke engine. 4 cycles are better, as the fuel consumption on it is much less, and the noise is heard differently than with two cycles.

The electric motors of the gas trimmer do not have high power, which is why it makes sense to choose a model with an indicator of no more than 1.2 kW.

Without a network, the battery electric motor can work for a maximum of 2 hours, so you are running out of time, like Cinderella. Otherwise, you will have to return, tritely pedaling the “pumpkin”.

Estimate for what purposes you need your super-improved bike, then, in accordance with this, put what is more to your liking.

Step two: prepare everything you need

Having figured out what we will put, we proceed to prepare the parts for assembly. And with the engine from the trimmer, and with the engine from the gas mower, the bike will be assembled according to the same scheme.

Overview of gasoline-powered bicycles

It is important to have:

• work bike (of any age and type, most importantly - on the go);
• directly the engine itself from the trimmer;
• a belt or a chain (the second is definitely stronger, therefore, it is preferable);
• an asterisk sharpened for this engine (you can do it yourself);
• a clamp for attaching the engine to a bicycle (you can also make or buy);
• a cable connecting the engine and the throttle;
• controller;
• fuse;
• tensioner;
• a well-fixed exhaust pipe (for reliability when installing a gasoline engine, it is better to weld it);
• washers, bushing, screws, nuts, wires.

Step 3: Assemble the Bike with the Trimmer Engine

If the equipment is ready, you can start assembling. We propose to divide the whole action into several stages:

1. Installing the sprocket. A pair of rubber pads is attached to the rear wheel. We put the first one behind the knitting needles, the second one between them. We find the bushing on the outer side of the wheel, we put an asterisk on the bushing. From the inside we attach a crescent moon.

It is necessary to ensure that the movement from the motor to the sprocket is carried out gradually, avoiding deformation of the parts of the mechanism. It is best to put a stainless steel plate lubricated with thermal paste on the frame. This is where the controller will be attached.

2.Motor fixture. We choose a place for the engine. It is more convenient to place the motor behind the bike seat or on the trunk itself. We install the engine there, fix it with a clamp. Sometimes the engine is mounted in the center of the bike to maintain weight balance. It is fastened in the same way: with clamps, clamps. You can optionally connect a wattmeter to measure energy consumption. On the trunk, you immediately need to look at the area for attaching batteries.

3. Chain tension adjustment. It should be done immediately, as soon as we pull the chain or belt on the star. We install a tensioner on the bike to help adjust the tension.

4. Fastening the throttle. Once we do that, we need to connect it to the motor with a cable.

5.Mounting the gas tank.

6. Installation of the carburetor.

Immediately after installation, we check the reliability of the structure, eliminate minor problems. Our hybrid bike is ready!

Believe me: the updated vehicle is worth it to conjure over it! Now you can safely go for mushrooms or fishing. And you can simply and comfortably move around the noisy metropolis. Very soon you will appreciate all the advantages of a bike with an engine.

velofans.ru

BICYCLE WITH MOTOR, HOMEMADE MOped

Many people today want to ride a bike for long distances without getting tired. That's what motorized bicycles are for. A homemade bike with a motor will allow you to move quickly, and most importantly not get tired. However, many will wonder how to implement this idea in the shortest possible time and without unnecessary labor costs?

ENGINE

To begin with, I must say that today there are many ready-made kits, which include an engine and other necessary equipment installed on a bicycle. This is a great option for someone who wants to own a bike with a motor, but does not have the ability to make every necessary fasteners themselves, or simply does not have time to spend hours on the Internet choosing the right motor.

But, if a person wants to do all the work himself, he will instantly face the problem of choosing the right engine for his bike. Most often, people try to find an engine among unnecessary utensils in the household. And here the most ordinary manual lawn mower fits perfectly. But we must not forget that the power of the engines of lawn mowers is completely different, and this is a key point in re-equipping a bicycle.

For example, if you install a 1 hp motor on your bike, then without your help, it will not be able to move a structure of this weight.

Accordingly, it’s also impossible to go uphill relaxed, you have to pedal. But if your bike is equipped with a 2 hp motor, then this, in fact, will turn it into a full-fledged moped, since you can forget about the pedals altogether, even while driving downhill. It makes no sense to say the obvious, and it is so clear to everyone that the weight of your vehicle will increase significantly, and the more powerful engine you choose, the heavier your "pedal horse" will become.

There are also cases when chainsaw motors are attached to bicycles. Here, too, power indicators are very important, however, the parameters of the weight and size of the engine are already coming to the fore. One example of such an upgrade will be discussed below.

DRIVE UNIT

The most common method of transferring the rotational motion of a motor to a wheel is through a belt drive. This method requires the manufacture of a pulley that will be connected to the motor via a belt. A fairly simple and reliable replacement for a pulley is a bicycle rim that is slightly smaller in diameter than your bike wheel. That is, to create a homemade motorized bicycle, all you need is a motor, a pulley, a belt, some fasteners, a set of tools, patience and your hands.