Do-it-yourself Alpha moped repair and maintenance recommendations

The motor in the moped, the piston of which is horizontal, was modified by the Honda branch. On the Internet you can find a video that their production has continued in China. The economical and reliable engine was able to pass stringent testing conditions among Russian consumers. Among the features of the model are a strong Alpha engine with small dimensions, seventeen-inch wheels, which are installed on top of a frame that has sufficient clearance from the road.

The Alpha moped has been perfectly adapted for comfortable movement of loads. Nothing can replace it as an assistant and faithful friend during hunting, fishing, gardening, in the forest - for those who love motorcycle tourism.

The Alpha moped is well suited for travel, trips to the country, and fishing

The choice of manufacturers fell on a four-stroke engine. The combustion chamber, as the manual says, must be filled inside with an air and gasoline mixture, which is ignited, and then combustion products are removed for effective engine operation. It makes ten thousand revolutions per minute. One cycle in a four-stroke engine is two revolutions.

Improving the filling

To tune a scooter, you also need to replace its CVT with a sports model - such devices are adjusted to the new engine characteristics much better and more accurately.
Manufacturers equip modern models of tuning CVTs with a rod lubrication system to increase the efficiency of the entire transmission part of the scooter. Smoother and easier movement of the variator along the hub will significantly improve the scooter's throttle response. You can also increase the performance of a scooter with the help of proper installation of a tuning cylinder-piston group. Installing the latter is the most radical and effective method of increasing the performance and power of a scooter.

The tuning cylinder-piston group usually comes with a cylinder head, the shape of the combustion chamber of which is optimized

If the owner also plans to install pistons with a larger diameter, it is important to ensure the ideal technical condition of the crankshaft and bearings - otherwise they will very quickly fail due to heavy loads. At this stage, tuning the scooter can be completed, since for other improvements it is easier to buy a more powerful vehicle and not bother installing expensive tuning parts

Air conditioning compressor from Chrysler

Around this time, I came across a refrigeration compressor and it turned out to be ideal as the basis for the engine I had planned. It was a Chrysler RV-2 automatic air conditioning compressor. The crank moved the pistons 90 degrees (V-twin design), with a 58.7mm bore and 33.4mm stroke.

In both cylinders, combined with the correct gas path, the displacement was 127.8 cc, which is more than double the volume compared to the Philips MP1002C engine. Being a refrigeration compressor, the design was made thoroughly and with sufficient margin of safety for such strong compression. In addition, this compressor contained a gerotor oil pump, which under pressure lubricated the edges of the large connecting rod bearings. Each aluminum piston had one compression ring and was connected through Alcoa aluminum connecting rods. This compressor turned out to be the most optimal for my idea.

Air conditioning compressor Chrysler RV-2

Years of development

Over the course of several years, I have designed and developed all the necessary components in order to adapt the compressor to work in a Stirling engine. I also designed a tubular support frame to support the engine. The frame is styled to resemble that used on a Philips generator set.

The heater head, displacer and inner cylinder are made of stainless steel 302 pipes of various sizes. I used a coil of copper wire as a regenerator. The cooler, located on the compression side of the engine, was made of aluminum tubes. Used a small 200 watt 12 volt belt driven generator that was originally purchased and intended to run on a garden tractor.

Here is this engine, called SV-2 MK I (Stirling V-2 Mark I):

Generator based on the Stirling engine SV-2 MK I (Stirling V-2 Mark 1)

Tuning features

Tuning an Alpha moped is a rather fertile topic. There are a lot of options for improving the qualities of the model, and the cost of tuning is much lower than for a Chinese scooter of the same price category. The simplicity of the structure makes it possible to improve both the engine itself and external elements at your discretion.

Tuning Alpha can be carried out in different directions and, before starting improvement, it is worth paying attention to those qualities that will be changed. This modification should not be confused with styling - it only changes aesthetic indicators and does not in any way affect the functional characteristics

Tuning an Alpha moped with your own hands is a very interesting task, which over time can greatly captivate the owner. The ability to refine the characteristics implies making both external and internal changes that can improve the functionality of the model. Many hobbyists purchase an Alpha moped as a future base for realizing their own ideas.

Unique maneuverability

The record holder for cross-country ability among light motorcycles is the Alpha moped (72 cubic meters). The characteristics of its engine, dimensions and weight are very significant advantages. The Alpha's ability to overcome any off-road conditions is due to its light weight - 81 kg. To ensure confident movement through sand and mud, such lightweight equipment does not require a powerful and heavy motor. If there is a need to overcome a section of deep and sticky mud, a steep climb through sand, or ford a shallow stream or river, then you can always get off the moped and help it cope with a difficult section of the road, pushing it forward like a bicycle.

Running in a moped with an updated engine

When the moped is assembled with a new motor configuration and run in gentle modes, try to reach maximum speed in deserted conditions. It may turn out that the chassis and brakes can no longer cope with the power of the engine. The spokes of the rear wheel are curled by torque, and in order to brake the moped you will have to release the brake parachute. While driving, the silent blocks of the shock absorbers fall out and wobbling begins. This means that next on the replacement list will be shock absorbers, a motorcycle front fork with a wheel and a disc brake system.

The Alpha moped is one of the most popular in the post-Soviet countries. This is not surprising, because this model is excellent value for money. The characteristics allow us to consider the moped practically a universal one, and the wide possibilities for modification help to significantly expand them. The use of such a moped is not only convenient, but also economical - fuel consumption per 100 km is only about 2 liters with a factory equipped engine. The combination of low weight (about 80 kg) with a load capacity of up to 120 kg makes this model very attractive.

However, used models sometimes experience problems with ignition, which negates all the advantages of the moped. It’s not very difficult to get your iron horse back into service and understand why the Alpha moped won’t start. To do this, it is not even necessary to contact specialists - with due attention, all the work can be done with your own hands.

Modifications

Review of the Alpha 72 cc moped. would not be complete without listing its main modifications. There are two frame options for this moped. This is high, with space for a large gas tank, and low, where the gas tank is small and the trunk is located above it. In terms of their characteristics, both versions of the moped will be almost identical, with the exception of the difference in the volume of gas tanks and a slight difference in seat height. "Alpha" is made by a number of Chinese manufacturers, so there are many parallel names for the same model. For example, the Omax Alpha 72 cc moped. is a purely Chinese version, and the Orion moped is 72 cc. - Russian assembly of the same model from Chinese spare parts, carried out at Velomotors enterprises.

Consequences of untimely replacement

If you don't change your air filter, at best its performance will deteriorate over time. The moped will lose power and stop idling. Also, dust getting into the carburetor will clog all the channels, which will lead to unstable operation. The worst case scenario may be that dirt gets into the engine itself. Large particles will leave deep scratches on the cylinder bore and on the piston. The valve assembly may fail. Accordingly, a major overhaul of the engine will be required, so you should not neglect replacing the air filter. The consequences can be dire.

The frequency of replacement depends on the level of road pollution in the area. The cleaning system should be carefully inspected periodically.

JavaScript is disabled in your browser

Today, modern mopeds are equipped with a huge number of different electronic devices, which naturally operate using electricity. Whatever one may say, even a rechargeable battery needs current, so it requires periodic charging. Optics, battery, starter, tail lights and other electronic devices depend on the generator. The scooter's generator plays a major role in the correct operation of the moped, and the simplicity of its design should be like the ABCs even for novice motorcyclists. After all, this is classical physics - a school curriculum!

Tuning of external parts

By improving the external parameters, you can improve not only the aesthetic appearance of the Alpha moped, but also increase its aerodynamic performance and make movement more comfortable. The following is usually used for tuning external elements:

Replacing the seat with a wider and more comfortable one.
Installing protective panels will help prevent leg fractures and protect them from damage.
Replacing the wheels with wider ones will increase the stability of the moped. This is especially true when replacing an engine.
Installing a windshield helps improve travel comfort. But at a speed of more than 40 km/h it already begins to affect the aerodynamics of the moped.
Replacing disks has a more decorative meaning. The standard wheels on the Alpha are also quite drivable.
Replacing the plug. If the Alpha moped will be used to travel on uneven roads, for example, in the forest or outside the city, you can replace the forks. Strengthening the shock absorbers helps soften the load on the wheel.
Replacing LEDs can also be a great solution. You should not use xenon diodes, as they will dazzle drivers and will not be better in terms of lighting quality than conventional ones.

If desired, tuning can be completed by styling the moped by performing airbrushing or changing the color of the body. An excellent solution to highlight a moped would be to install LEDs under the fenders or on protective panels.

Tuning an Alpha moped is a very rewarding activity that can captivate the owner in the direction of improving his model. Design and assembly features make it possible to improve Alpha in absolutely any direction. This makes it very convenient for both beginners and experienced hobbyists.

Tuning an Alpha moped can increase power and other characteristics of the vehicle, such as its speed. Practical advice and recommendations.

Many owners of Alpha and Delta mopeds want to tune their moped in order to improve its performance, increase speed and traction, because nothing in the world is perfect. Tuning the ALPHA moped can turn a seemingly ordinary ordinary worker into an almost cool racing bike. It is possible to overclock the engine volume from the existing 72 to 110.

Preparation

An important parameter for success in shifting gears is the speed and accuracy with which you shift, so you need to carefully consider the issue of convenient location of the clutch lever and the height of the gearbox foot. Both parameters depend entirely on your riding position and may change as you gain experience riding the motorcycle. The fingers of your left hand should not rest on the clutch lever, you should touch the lever only when changing gear, the rest of the time your hand should clasp the steering wheel clip. You must choose the angle of the clutch lever and its lift in such a way that you can reach the lever at any time and nothing will interfere with you. You need to pull the clutch lever with four fingers. Pay attention to this. It is not recommended to install shortened bicycle-type handles under two fingers.

the lift of the lever is too large, there are times when you need to grab the steering wheel to reach the lever and this can only be done with your fingertips;
The angle of the lever is such that it is not possible to reach the lever in all situations.

Alpha moped repair

The affordable price has made the Chinese 50 cc moped “Alpha” the literal favorite in the demand for “stools”; in the same bunch is its slightly more durable twin brother “Delta”. Economical, with an engine capacity of 72 cc and air cooling, the Alpha moped is unpretentious and easy to maintain. The clear design of the Alpha moped engine allows you to repair or tune the equipment yourself.

Alpha moped engine repair

Before disassembling the engine of the Alpha moped, we fix the scooter with the central stand and free it from the plastic. We disconnect all engine power systems and do not forget to drain the oil!!!

We remove the engine along with the transmission, and on a flat surface we continue the home repair of the Alpha moped.

It will help to properly dismantle the Alpha moped engine by disassembling it according to the following scheme:

remove the muffler and exhaust pipe;
remove the camshaft gear cover;
unscrew all 4 bolts from the cylinder cover;
remove the top cover and cylinder head;
We look at valve wear, internal contamination and the condition of other system parts.

If this is your first time doing a DIY repair on an alpha moped and you need to disassemble it, don’t forget to sketch a diagram of how everything was in place! If the valves need to be replaced, or if there are gaps in the fit, then they need to be removed:

Place the head on a level place. To prevent the valve from being damaged during dismantling, it is better to place a layer of thick rubber or a rag under it;
we select the socket head, place it on the valve plate and hit it hard with a hammer;
release the crackers, remove the top plate and valve washer;
remove the valve and guide bushing.

To complete the repair of the Alfa moped engine, after replacing the parts, we begin assembling the engine in the reverse order, putting everything in its place, observing the marks. Don't forget to add fresh oil.

Alfa moped box repair

The gearbox of the Alpha moped sometimes fails and requires constant attention. Repairing a gearbox at home is not particularly difficult for a beginner.

We carefully read the instructions for the alpha moped, do-it-yourself gearbox repair.

Let's take it slowly, in order:

We first dismantle the cylinder, then the rotor and clutch block;
carefully remove the retaining ring (you need a screwdriver and a thin knife or blade) and the drive gear;
To remove the speed unit, unscrew the fastener - the bolt on the back side.
remove the gear shift fork;
remove the crankshaft and drum.

When the repair of the Alpha moped box is completed, assemble the gearbox using the reverse algorithm.

Tuning

For many, Alfa moped repair begins almost immediately after purchase. Thanks to the presence of spare parts and the simplicity of the Alpha moped engine, tuning is common. This could be replacing the not very comfortable original seat, or increasing the engine capacity to 110 cc. Replacing the sprocket from 14 to 15 or even 16 will increase the speed to 10 km/h.

Increase in cylinder volume - replacement from 50 cc. at 70 cc., will add power, which is sometimes lacking. To do this, in addition to the cylinder head, you will have to change the pistons and carburetor. You can carry out such maintenance of the Alpha moped yourself. If you bought an Alpha moped, repairing the gearbox and engine yourself will be a good opportunity for you to study your equipment.

And finally, some useful tips that will make repairing an Alpha moped a more enjoyable experience for you.

Have you disassembled the timing belt and CPG? Place parts in separate boxes. Sketch the position of the gears and forks on paper before removal. If you decide to increase the speed of the Alpha moped using an asterisk, do not forget that the front and rear change at the same time.

Monitor the speed, prevent clutch wear, and change fluids in a timely manner.

Don’t be afraid of repairs, learn the hardware, watch video lessons, and you won’t need the services of a mechanic.

Hang panniers, change headlights and mirrors. The Alpha moped is from the series that will respond to any of your concerns with reliability in thousands of your future kilometers.

www.real-biker.ru

Causes of malfunction

The Chinese Alpha moped, whose price is affordable, does not cause owners many problems. Interruptions in a moped engine have several causes, and once you understand them, you can quickly fix the breakdown.

Disassembling the moped engine

So, if the engine starts with great difficulty, the muffler “shoots”, and smoke comes out of the chimney, it means that the moped is “capricious” due to problems with the carburetor. In order to solve this problem with the Alpha moped, you need to:

clean the carburetor;
thoroughly clean the moped's air filter;
tighten the screws;
adjust the moped carburetor.

If the Alpha slowly picks up speed, and its engine is not able to develop the declared power, then the reason is the incorrect operation of the moped valves. It can also “get sick” due to gaps and incorrect timing. In order to make the Alpha moped function normally, it is necessary to replace the used valves with new ones.

If the Alpha moped is not able to reach the required speed, despite the roar of the engine and solid revolutions, it is impossible to stop the spinning wheel, and gear shifting occurs intermittently, then the cause of the malfunction is clutch wear.

To eliminate the breakdown, you must perform the following manipulations:

remove the engine;
remove the plastic cover;
unscrew the tightening screw;
Unscrew the adjustment mechanism and tighten the screw tightly;
start a moped;
turn on first gear and drive a few meters.

Another cause of moped engine malfunction may be wear on the drive sprockets. If they are very worn, they must be replaced with new ones.

You may encounter the problem of engine overheating. The situation can be corrected after adding oil. If oil leaks, you must urgently contact a professional service .

Alpha moped engine overheating

Engine disassembly

Disassembling the Alpha engine is quite simple. To do this you need:

“arm yourself” with a key;
Unscrew the bolts on the intake manifold (by 10);
unscrew the cylinder covers and the bolts located there (4 pieces);
remove the cylinder head.

After performing the necessary manipulations, you need to properly assemble the engine, installing all the parts in place.

A diagram can help you understand the nuances. Also, a lot of useful tips regarding repairing the most important “organ” of the Alpha moped are contained in the training video.

Let's get started

So, the battery is ready to charge. Connect the terminals of the charger to the battery. The red terminal is to the positive terminal of the battery, the black (or blue) terminal is to the negative terminal. Don't mix up the polarity!

Most modern chargers automatically set the charge current and charging time. But if it is possible to set the charging current, it is chosen by dividing the nominal capacity of the battery by ten. For example, with a capacity of 4 Ampere-hours, the charge current should be 0.4A. In this case, the charging time will be approximately 10 hours.

You should not charge a motorcycle battery with a car charger if it cannot charge with a current of less than 1A. High charging currents can damage the battery.

Battery care rules

The battery requires proper storage and care. Here are some requirements for proper operation of a scooter battery so that it will last a long time.

First, do not allow the battery to be discharged to more than half its capacity. In general, the battery should not be allowed to be stored in a discharged state. If you feel that the scooter starter is having difficulty cranking the engine, recharge it as quickly as possible.

The battery must be kept clean, since dirt accumulating on the terminals contributes to the rapid discharge of the battery due to current leakage. Keep contacts clean and free of oxides.

In order to prevent a short circuit at the battery terminals, which can permanently damage the battery, you need to spare no expense in purchasing fusible links, preferably factory-made ones. Homemade fuses, which often fail, can only make the situation worse.

It is unacceptable to store the battery at temperatures below -5˚ Celsius, as well as overheating the battery above +50˚. The battery can be charged with currents ten times lower than indicated in the battery capacity characteristics. There is NO need to recharge the battery. When overcharged, water begins to actively evaporate, and energy accumulation stops.

Measure the voltage at the output terminals with the engine running, it should be between 13.5-14.5 Volts. If abnormal, check the scooter's voltage regulator.

If your scooter is equipped with a serviceable battery, check the electrolyte level at least once a month. If the level drops, add distilled water. Plain water causes the battery to fail faster.

You should always remember that equipping a scooter with a radio, additional headlights, and an alarm requires the scooter owner to check the battery charge more often, since all these devices require additional electricity.

source

Ignition circuit elements.

Electronic tachometer on the dashboard.

When the turn signals are on, it makes characteristic clicks with a frequency of about 1 Hz. Also, you cannot replace lamps with more powerful ones. Due to the electronic circuit of the regulator, the voltage on this wire is converted into a pulsating one, and is supplied to powerful current consumers - low and high beam lamps, as well as dashboard backlight lamps, there may be several of them.

This is what the relay regulator looks like on a scooter. Due to its primitive circuitry, the relay-regulator often fails. Basic Concepts In order to understand wiring, you need to understand a little about the types of current. The starting relay receives a thick red wire from the positive terminal of the battery. The alternating voltage is removed from the white wire and supplied to the relay regulator for subsequent straightening and stabilization. The start relay is located on the right side of the scooter frame. This is an ordinary key switch that switches the positive voltage from the relay-turns the gray wire to the lamps. There are three wires coming from the sensor. The fuel level indicator, tachometer, sound signal, turn relay, and ignition circuit are also ready for operation. Experienced owners, after purchase, replace it with rubber-insulated wiring. Also, you cannot replace lamps with more powerful ones. The toggle switch must be powerful enough, because the entire electrical circuit of the scooter is, in fact, switched through the ignition switch. Wiring Operation The large black wire connects: 2 yellow ones, green and red, where direct current flows. Valuable tips It is no secret that wire insulation is made of cheap plastic and it is better to replace the insulation with rubber before it crumbles after a few rains.

How to change gears on a motorcycle correctly

All movements you make with the pedals must be smooth so as not to damage the transmission.

When changing gears, change one speed at a time. It is not advisable to jump.

To understand how to change gears on a motorcycle, you need to carefully study the controls. There are motorcycles with manual transmission and semi-automatic.

Method one

Motorcycles with manual transmission. All actions in this case occur in the following sequence. Pick up speed. Take off the gas. Engage the clutch. Press the gear shift pedal. Release the clutch, then the shift pedal and add gas.

To start the motorcycle, place it in neutral. After this, remove the gas and squeeze the clutch, at the same time turning on first gear. Taking your foot off the gear pedal, apply gas and release the clutch. Now add gas.

To upshift, you need to lift the gas, engage the clutch and press the gearshift pedal. After this, release the clutch, release the shift pedal and add gas.

To downshift, you need to remove the gas and engage the clutch. After this, sharply add gas, and when the speed begins to drop, press the gearshift pedal. Release the clutch and shift pedal and add gas. Once the motorcycle has stopped, be sure to put it in neutral.

Method two

Motorcycles with semi-automatic transmission. On these motorcycles, gear shifting is easier. Take off the gas and change gears. The clutch and gearbox are connected here.

Before starting the engine, place your bike in neutral. In order to engage first gear, you need to remove the gas and press the gear lever down. To increase the gear, you need to remove the gas and lift the gear lever up. To downshift, on the contrary, you need to apply gas and immediately remove your hand from the gas. When the speed starts to drop, change the speed and add gas. Now you know how to change gears on a motorcycle.

First rules

How to calculate parameters, prevent overloads and short circuits, and also not overpay for fuel? This is the main question when choosing a reliable electric generator for your home, cottage or other facility. First of all, you need to check all the electrical equipment in the room, record the energy consumption of each device and calculate the amount. Most likely, the resulting amount will be quite high, and you should also remember about the inrush current coefficients and the required power reserve.

In order not to install a large 20 kW generator with a fuel consumption of 7 l/h, you need to select only those electrical appliances that you will need during power outages and the launch of an emergency power system. The lighting system, refrigerators, alarms and similar devices must be connected to the network. It is also important to run heating equipment with an electrical control system. Irons, hair dryers, vacuum cleaners and washing machines can wait until the city's power supply stabilizes. You should calculate which energy consumers will work all the time in non-stop mode, and which ones you will connect to the network periodically. For example, you may not run a microwave oven and an electric kettle at the same time so as not to create a high load. You can turn off the lights while using the computer or TV, and so on. Taking into account all these factors, you can approximately calculate the required operating efficiency of an electric generator.

Other options

In addition to the above method, you can increase the performance of a moped such as its power and speed using other tricks. For example, you can increase the power of your scooter by replacing the muffler, replacing it with a compatible resonant pipe, and tuning the transmission.

You can also choose a sports variator for your scooter and install a reinforced belt.

If you don't know how to further increase the power of your moped, try replacing the standard exhaust pipe with a sports one. With its help, you will increase the power of the scooter by up to 15%, increasing the maximum speed. Finally, replace regular brakes with disc brakes, standard brake pads with sports brake pads, and select brake hoses with reinforcement.

After all the work involved in trying to increase the speed and power of the scooter, do not forget about your safety and the safety of other road users. If you doubt the correctness of your modifications to the moped, contact the service, where they will give you practical advice or carry out a set of improvements yourself. Remember that your life may depend on the quality of work to increase the power and speed of equipment.

Advantages of the online store of motorcycle parts “MotoArt”

The catalog of the MotoArt store presents high-quality batteries for Alpha 110 and other models of mopeds. A large selection of various types of devices, differing in their capacity, size, technical parameters and price, will allow you to choose the most suitable battery model. The best modifications of rechargeable batteries made in Ukrainian, Chinese and Taiwan are presented to buyers. All units are accompanied by quality certificates and are carefully checked before being sent to the client for manufacturing defects.

If it doesn't start

When the Alpha moped does not start, the muffler fires and black smoke comes out of it, this means that you have a problem with the carburetor. Black smoke says a lot, a lot.

Firstly, since there is smoke, the fuel burns, and the piston throws it into the exhaust. This means the CPG is ok, and most likely the valves too.

Secondly, smoke indicates proper ignition, the candle gives a spark, otherwise smoke could not have formed.

Thirdly, smoke is almost a combustion process, which means the problem is in the carburetor, the fuel mixture is not supplied correctly.

To fix these problems, you need to clean the carburetor and air filter, also make carburetor adjustments and tighten the bolts thoroughly.

If your moped takes a long time to accelerate, it’s as if someone has “castrated” the engine and the power reserve seems to have disappeared – the problem is 100% in the valves, they should be replaced.

After a thousand kilometers, the engine needs to be checked for the first time, subsequent checks should be performed every four thousand kilometers. All checks should be performed only on a cold, already cooled engine.

Alpha has both pros and cons, for example, an undeniable plus is its low fuel consumption per hundred kilometers - only 2 liters of fuel.

The moped can be loaded with one hundred and twenty kilograms, while it itself weighs eighty-one kilograms. The Alpha moped is equipped with an air-cooled engine, two brakes: front and rear, four-speed manual transmission, 2 shock absorbers.

Additionally, the Alpha model is often equipped with mudguards on the rear and front wheels. They will help protect the driver and engine from water and dirt.

Alpha has a 4-stroke engine, which must be diagnosed and repaired according to the following parameters:

Adjusting the valve clearances, such a need arises if characteristic knocking noises appear in the cylinder head, or violations in the clearances are found.
Removal and subsequent installation of the cylinder head is necessary when the combustion chamber is clogged with carbon deposits, as well as for replacing and grinding in valves.
Complete disassembly of the cylinder head - if the valves are no longer sealed, also to replace oil scraper valves and caps.
Removal and installation of the entire cylinder, generator rotor and electric starter.
Also removing and installing the piston and piston rings, chain.
Disassembly and assembly of clutch, crankshaft, gearbox.

Causes of malfunction

Disassembling the moped engine

clean the carburetor;
thoroughly clean the moped's air filter;
tighten the screws;
adjust the moped carburetor.

Moped clutch parts

To eliminate the breakdown, you must perform the following manipulations:

remove the engine;
remove the plastic cover;
unscrew the tightening screw;
Unscrew the adjustment mechanism and tighten the screw tightly;
start a moped;
turn on first gear and drive a few meters.

Another cause of moped engine malfunction may be wear on the drive sprockets. If they are very worn, they must be replaced with new ones.

You may encounter the problem of engine overheating. The situation can be corrected after adding oil. If oil leaks, you must urgently contact a professional service .

Alpha moped engine overheating

Engine disassembly

Disassembling the Alpha engine is quite simple. To do this you need:

“arm yourself” with a key;
Unscrew the bolts on the intake manifold (by 10);
unscrew the cylinder covers and the bolts located there (4 pieces);
remove the cylinder head.

After performing the necessary manipulations, you need to properly assemble the engine, installing all the parts in place.

A diagram can help you understand the nuances. Also, a lot of useful tips regarding repairing the most important “organ” of the Alpha moped are contained in the training video.

Features of moped tuning

The alpha moped is one of the most popular mopeds today. Its popularity is due to its low price and the large number of opportunities it gives its owner. Most often, models with an engine capacity of 100-125 cm3 are chosen for purchase. This power is enough to accelerate the moped to 100 km/h and feel comfortable

Alfas are also famous for their low fuel consumption, which is also very important. But, perhaps, the main advantage of this moped is its maintainability, because there is not a large amount of electronics, and all power units, in principle, are quite simply designed

In general, the alpha moped is a pretty good motorcycle for rural areas or small towns, where it is much faster and more convenient to travel on two-wheeled vehicles. However, every Alpha owner sooner or later comes up with the idea of modifying and tuning the moped. What to do in this case?

Engine configuration. Trial and error

After much thought (and several years of frustration), I realized that there were mistakes in this configuration. First of all, in any Stirling engine the heater, regenerator, and refrigerator must be “monoblock”, that is, they are placed in close proximity to each other. This means that these three thermodynamic components should all be located away from the engine's displacer, instead of being "scattered" throughout the gas path as I did on the MK I. This clever design is very important for good performance and such a tight monoblock the layout is clearly visible on all Philips engines. The fact that I placed the regenerator in close contact with the engine block allowed heat to escape along the entire length of the engine - this is clearly a bad decision in the Stirling design.

Source

Appearance

And if tuning a moped with an engine may seem too boring, then by transforming the appearance of the “Alpha”, everything becomes much more interesting. In fact, if you are going to make a really decent tuning, then you can’t do without imagination

It is important to imagine the future appearance of the moped - what colors it will be decorated in, what character it will have, aggressive or classic. Make a few sketches, and then you will get a more interesting result.

We will tell you what can be added and modified.

The first, and most common thing, when you are tuning an alpha moped is updating the rear view mirrors. The factory mirrors on the Alpha moped look quite sad, so you can buy new ones. A good idea would be to install mirrors with turn signals, which will not only improve the appearance of the moped, but also make the mirrors more practical.

Speaking of turn signals, the turn signals on the Alpha moped are quite small, although they shine well. There is nothing stopping you from updating them, for example, painting them, changing the light bulb to a brighter one, or simply buying new turn signals. The same applies to the brake light and headlight.

Some people prefer to replace the disks with more interesting ones. Of course, buying and installing new discs is not the easiest option, but the result will be much more noticeable than, for example, replacing turn signals. In general, the wheels of a moped play an important role in the appearance, so if you choose some unusual wheels, the result can be a completely new look.

Basic Concepts

In order to understand wiring, you need to understand a little about the types of current. A constant is one that does not change its direction and magnitude. Variable is one where the voltage and current change their value after some time, or the current flows in the opposite direction. Often direct current, as can be seen in the wiring diagram of the Alpha moped, is needed for light bulbs: headlights, turn signals, foot. There are models where the motorcycle is completely converted to direct current, but these are old models and they are quite rare.

The alternating current must be rectified somewhere, and a voltage-stabilized rectifier is designed to do this. In simple terms – a voltage regulator. Why is it needed? The generator outputs 40 V, but this amount quickly burns out the light bulbs. Therefore, the rectifier reduces this figure to 13.8 V. The Alpha has two power lines: the first is the power supply to the on-board network of the electric starter, headlights, turn signals, dimensions, relays, signal and stop. The second is the power line for the generator, ignition coil and spark plug.

Downloads

When braking and changing gears, you should ALWAYS try to sit as far away from the tank as possible, resting your knees on the tank. The landing helps load the rear wheel, which is unloaded by braking at the front, and helps the torque limiter work. If you are sitting in the back, the likelihood that the rear wheel will start jumping when shifting down is significantly reduced.

There are a lot of myths regarding gear shifting. Simple rules:

the faster you shift, the less you wear out the clutch;
the higher the rpm, the faster you shift;
you can and should slow down with gears;
you can move from 5th to first gear (understanding why this is necessary and what will follow);
you can and should shift at high speeds;
Shifting gears without a clutch causes minor wear to the fork and camshaft.

Owner reviews

I drive a Zizer 400, the Alpha is parked in a country house in the countryside, there are no roads there, the Chinese is just right. The moped is already five years old, the mileage is less than 10k, the only breakdown is a broken clutch cable. Andrey, Volgograd.

It drives sadly, brakes sadly, looks boring, but what you pay is what you get. For the money, the Alpha RX is a decent bike if you need purely utilitarian transport at minimal cost. Spare parts are a penny, can be repaired on the knee. It copes with its tasks. Alexey, Novorossiysk.

I bought Alfa RX after buying two Chinese scooters - one was broken, the other was stolen. I liked driving with a manual transmission, you feel more confident. It picks up speed up to 60 mph confidently, then it becomes weaker. There is zero light from the standard headlight, so I installed a more powerful bulb. Otherwise ok. Dmitry, Saratov.

Shifting up gears with clutch

To understand the upshift technique, perform the following experiment. Drive in second gear with the throttle slightly turned off. Now, without closing the gas handle - squeeze the clutch - you will see how the revolutions instantly rise. Close the throttle. When the load in the form of the rear wheel disappears, nothing prevents the engine from spinning up and the speed increases rapidly. That is why speed in gear shifting plays an important role. If you shift quickly, then you may not close the throttle; at the moment when the clutch is depressed, the speed rises and immediately the gear shifts up and the clutch returns. If you do this quickly, then the revolutions rise by only 1000-1500 to provide optimal conditions for upshifting with the clutch.

To change gears up with the clutch, you need to quickly squeeze the clutch, shift up and release the clutch so that the revolutions at which the next gear is engaged do not exceed the revolutions of the gear from which you are shifting by more than 1500. If you do this slowly, you need to close the throttle at the moment when the clutch is depressed, if quickly, you can hold the handle in the same position or barely close the handle. An important criterion is the speed at which you started shifting up and the difference between the speed at which you depressed the clutch and at which you released the clutch - the difference should not exceed 1000 - 1500 revolutions. With practice, gear shifting will become automatic and will not require attention.

Starting current coefficient

There is another important nuance that must be taken into account - the inrush current coefficient. When most electrical appliances start up, their power consumption increases for the first few milliseconds. For example, a standard 800 W microwave oven has a starting current coefficient of 2, so in the first second its energy consumption will be 1600 W. In most cases, these coefficients are distributed as follows:

Thus, you can calculate that if, during a power outage, 3 incandescent lamps of 100 W each are on in your home, a computer is running at 400 W, a refrigerator at 600 W, and you decide to clean with a vacuum cleaner at 1800 W (starting current coefficient 2.5) then you need a diesel - a 5.8 kW generator or gas generator, while it is advisable to leave some reserve and install a 7 kW power plant. If you try to perform these operations with an electric generator whose power is 4 kW, unwanted overloads will occur and the protection system will work. Therefore, calculating the optimal performance of a home station is of great importance.

Homemade voltage regulator.

Greetings to all! Somehow my voltage regulator (not a relay-regulator, don’t confuse it) on a Chinese 4-stroke “fly”; I wasn’t planning on buying a new one, since the standard LV on all 4Ts is crap, so I went online to look for a diagram. I didn’t have to search for long; I found a very simple and cheap option: a shunt RN. But for proper operation, it was necessary to disassemble the generator and disconnect the wire from ground, and lead it out with a separate wire.. Well, okay, I won’t explain further, because not everyone knows about electrics. In Chinese 4t, as a rule, these are the launch vehicles: The circuit is crap, the efficiency is crap, the resource is crap

Let’s assemble this one (For a single-phase generator, in our case): For a three-phase one: We have two options for connecting a homemade LV, I won’t drag it out and tell you what and how: The first option (with alteration of the generator): 1) We disassemble the generator, remove the stator from engine and this is what we see: Important: Where it says “The mass needs to be soldered off” we solder a separate wire onto the winding and bring it out, this will be one end of the winding. The other end will be the white wire. That's it, we're done, putting the generator back together

It should turn out like this: That is, we have two wires coming from the generator (Actually, there will be three of them, but we will need two). I won’t describe the connection of the LV further, I’ll show you a better picture: Done, all that remains is to connect the yellow wire from the old LV to the “+” of the battery. With this, the first version of the alteration is completed. Now our board. the network has a constant voltage.

pitstopsaki.com

Generator operating principle

As you already understand, the generator is the most important device of the scooter, and it is capable of producing only alternating current. But there are many cases when headlights, batteries and other devices only need direct current. And before we begin to consider this problem, we will study the concepts of alternating and direct current. Any type of electric current is a stream of charged particles, in other words they are called electrons. In the case of direct current, energy generation occurs without changing direction or magnitude. When the generator operates using the alternating current method, the flow of particles always changes direction and magnitude. Accordingly, to operate alternating current, batteries are required, which are found in most household devices. They allow devices to operate with alternating current, but in turn require a direct current source to charge them directly.

Let's move from theory closer to precise examples, and take a regular scooter battery that needs to be charged from direct current. To convert direct current into alternating current, a rectifier is installed on the scooter. Then the voltage relay comes into operation, supplying only the required amount of electricity. This relay is considered a rectifier. As a result, normal operation of the scooter is ensured by the current generated by the generator in the required amount, previously passed through the voltage regulator. So depending on the speed of the crankshaft, your scooter produces a corresponding amount of electricity.

Scooter generator device

Hub engines have no disadvantages. First, they add extra weight to the wheel they power. And because they require additional wiring to deliver power, using wheels and changing tires is difficult. With this in mind, you will need to properly maintain your device.

Hub motor cones come in a variety of designs, and there are differences between designs. The smaller geared motor offers an increased rpm range but less power. Gear-type motors are usually large and heavy, but they provide more torque and power to an electric scooter. They are more efficient than gear motors. However, no matter what the design of the generators is, the principle of their operation is the same, which means the maintenance is the same.

Scooter generator device

Taking care of your electric scooter is key to maximizing the performance and usability of parts and components, especially engine components. If you know what kind of motor your device runs on, this article will help you know how to properly test your scooter electric generator.