There are quite a few models and varieties of Minsk motorcycles, but they are all equipped with similar generators that operate on the same principle and also provide an automatic ignition system. Therefore, most often, if the engine does not start, the problem lies there. Setting up the ignition of a Minsk motorcycle is not particularly difficult for an experienced driver or mechanic, but those motorcyclists who are encountering this problem for the first time will need some advice. With their help, you can easily adjust the ignition of your Minsk motorcycle and put it in order, so that your iron horse can again carry you along the road with the breeze.
The main thing in working with ignition in Minsk is to determine what the problem is and whether you can help the motorcycle with your own hands. Most often, the problem occurs in the breaker or due to an insufficiently strong spark of the outline. We will look at these points in more detail.
We adjust the contact gap in the breaker:
- By turning the rotor, we achieve the maximum distance between the contacts.
- Unscrew the screw securing the contact stand to the cover.
- We turn the eccentric until we get a gap of 0.35 - 0.40 mm. We measure the gap using feeler gauges.
- We set the ignition timing.
To do this, raise the piston to a distance of 3 mm from TDC. Next we look for the moment of rupture. Slightly unscrew the bolts in the stator. Then we place a small sheet of paper between the contacts. When the sheet falls out, the breaking point has been found. We tighten the bolts into place and check the distance between the contacts again.
Operating principle of the electronic ignition system
The latest generation of Minsk generators significantly increases the power of the electricity source. This ensures uninterrupted functioning of all elements of the system. In all speed modes, electricity consumers have reliable supply.
New generators differ not only in their functionality, but also in their structure. Different motorcycle models have different types of alternators. But they are similar in appearance, which allows you to attach them without matching the model.
The only thing to remember is that when changing the generator to another type, it is necessary to regulate all other elements .
Electronic ignition is non-contact. The design features of Minsk do not provide for the presence of a battery. The ignition system operates on the basis of GPT. The work uses a switch unit - stabilizer and an induction sensor.
A voltage stabilizer is used to regulate the amount of current supplied to lighting and sound signals. The switch and the stabilizer are not interconnected in their functions.
The Minsk ignition system works through the connection of such elements as:
- candle,
- voltage transformer;
- induction sensor;
- resistance;
- indicator lamps;
- wires
A properly configured ignition system is the key to ensuring that the motorcycle will start even in winter. The absence of a battery makes life easier for a motorcycle owner to some extent. There is no need to think about periodically recharging the battery. The Minsk motorcycle wiring diagram shows the relationship between individual elements.
Adjusting the outline
A correctly adjusted outline will allow you to get maximum spark during ignition. Adjusting the outline is quite a complex and time-consuming task , so if you are not sure that the problems in the ignition are related to it, you should not disassemble it.
After adjusting the contacts, it is necessary to determine the size of the spark. If it does not change during the contact adjustment process, the adjustment can be considered completed. But, provided that the spark changes, we continue to work.
To adjust the outline you need:
- Unscrew the outline bolts, but not completely.
- If the spark increases with increasing distance between the contacts, turn the outline plate clockwise; if it decreases, turn it counterclockwise.
- Check the distance between the contacts.
- Install the ignition and check the spark.
- We perform these actions until we get a strong spark that will not change when the distance between the contacts changes.
The process of ignition control is quite complex and it may not be possible to do everything well the first time. Therefore, it is worth seeking advice from more experienced drivers who will not only tell you how to do it better, but also show you.
Non-contact ignition circuit (NCI) of a motorcycle
Application of contactless ignition in Izh, Ural, Java, etc. has reached its peak in recent years. For these purposes, many domestic and foreign brands (primarily Chinese) launched a wide production line, which simply showered our market with all kinds of electronics and accessories for tuning bikes.
The non-contact ignition system on Jupiter 5 from Izhmoto is most often installed. This is done not only by folk craftsmen with their own hands, but also by professional workshops, of which quite a few have sprung up recently, even in provincial villages. The manufacturer Izh Junker himself set an excellent example in this area.
The implemented contactless ignition circuit brings a lot of advantages to the life of a motorcycle enthusiast. Firstly, now riders of motorcycles equipped with a contactless ignition system can not be afraid of dampness. Secondly, the iron horse works with such a modern electronic accessory as a Swiss watch. And thirdly, the contactless ignition of a motorcycle does not cost so much that the owner of an Izh, Minsk, Java, Mt or other bike cannot afford to purchase it.
Equipping a motorcycle with the above electronic device gives the engine more uniform operation. The power unit operates very smoothly.
Contactless ignition Jupiter 5, for example, improves the dynamics of the operating motor even at high speeds. The engine itself becomes more sensitive to fuel supply. Even a fairly low battery will not be an obstacle to starting or operating an Izh engine with an implemented contactless ignition circuit.
Some tips for setting up the ignition on a Minsk motorcycle
- Before you move on to setting up the ignition, you should make sure that this is the problem. It is better to start repairs by checking the elements, the setup of which is much easier, and which more often fail. Even experienced specialists will not immediately determine whether the problem is in the ignition or the carburetor is clogged.
- Study the ignition mechanism thoroughly.
- Check the condition of the spark plug. Perhaps that is where the problem lies.
- When adjusting the ignition, it should be remembered that when the crankshaft rotates clockwise, the ignition interval increases, and counterclockwise, it decreases accordingly. Before adjusting the outline, the ignition timing is set.
Using these instructions and recommendations, ignition control will no longer be a problem. You can see the setup procedure in more detail in the video.
Contactless ignition system is easy to install
To mount and configure the above electronic motorcycle accessory you only need a couple of hours within one day. And why spend more time on attaching a Hall sensor, several wires and a new switch. Moreover, there is no need to modify anything on the bike’s engine generator. Simply remove the old contacts and install elements of the contactless ignition system Izh, Ural, etc.
The modulator plate must be securely mounted on the rotor of the motorcycle power unit. It should pass clearly in the middle of the Hall indicator slot. The washers will also be used.
Note that the presence of a voltmeter is not at all necessary. You can safely throw away this accessory, since demonstrating the voltage in the on-board network is unlikely to give you anything in practice. This is excess weight (and, accordingly, a load for the iron horse).
The whole secret of successful operation of contactless ignition on Izh Jupiter 5, which is very often tuned with this system, lies in the modulator plate and Hall sensor.
That is why the lion's share of the time of the installation process of a contactless ignition circuit is spent on its installation. If there are gaps in the sparking process, it is often possible that the modulator shutter, which closes the magnetic flux, is designed incorrectly. Therefore, its location relative to the sensor must be carefully checked. When open, this system accessory must not block the magnet or magnetic circuit. When closed, the modulator will completely block both of them.
It is better to make the modulator of the contactless ignition circuit in the form of a disk with a cutout. For 1-cylinder engines, the cutout angle on the modulator should be about 120 degrees. For 2-cylinder motors, the cutout angles are 60 degrees, respectively.
Even before installing the BSZ on Jupiter 5, Planet 4 or other bikes, you need to make sure that there is no excess play on the generator shaft. Even contact ignition does not go well with backlash.
Clutch, ignition, generator and other spare parts for Minsk 125
Our range of spare parts for Minsk includes parts for 125 and other motorcycle models. You can buy the following products from us at affordable prices:
- ignition;
- generator;
- clutch;
- engine;
- carburetor;
- brake system elements;
- fasteners and much more.
We supply products from trusted manufacturers, and we guarantee that the new fork, gearbox or any other part will fit perfectly and last a long time. Spare parts are intended for Minsk 125 and do not cause problems with replacement. You can install the ignition, clutch or generator yourself if you know the structure of the vehicle and have a tool at hand. We recommend that you consult with store managers about the operating features of the parts and components presented on the website before purchasing them.
Please note that the catalog contains both individual spare parts and entire assemblies. The second option makes it possible to completely replace the faulty unit with a new one and not worry about its stability in operation. We sell both original spare parts for Minsk and analogues with decent performance characteristics.
Buy spare parts for the Minsk motorcycle at the best prices
Our regular customers know that on the MotoImport website you can profitably buy a clutch, a generator, or a new clutch for any wheeled vehicle. Spare parts for the Minsk 125 motorcycle are always in stock and available at reasonable prices. The products will allow you to breathe a second life into the vehicle, ensure comfort and safety of its operation in any conditions. We sell parts and components of both domestic and foreign production. You can easily choose an option that suits you in terms of cost and quality of production. Store employees are always ready to provide free advice on the assortment.
Malfunctions in electrical equipment
- Burning of contacts - occurs due to a broken connection of the terminals or breakdown of the capacitor. It is necessary to replace the capacitor and clean the contacts.
- Weak spark. Eliminated by replacing the spark plug. If it doesn’t help, you should look deeper for reasons.
- The rotor clings to the stator. Eliminated by replacing the bearing.
- Damage to winding insulation. The result will be no spark. If this problem occurs on the road, you can try to swap the terminals and get to the garage that way. In this case, the motorcycle will have to be started while running.
All of the above malfunctions can be prevented if you constantly monitor the condition of these elements. As you know, prevention is cheaper than repair.
Consists of a stator, rotor and front cover with a breaker (Fig. 3.1). Eight coils are placed in the stator slots, making up four independent windings. They are connected in series. The coils are coated with insulating varnish and secured to the stator using bent petals and washers.
The rotor is an eight-pole magnet filled with a special magnetic alloy. The rotor is mounted on the cone of the right axle and is fixed using a segment key and an M7 bolt.
Rice. 3.1. Generator 43.3701: 1 – sensor terminals; 2 – lighting terminal; 3 – generator rotor; 4 – ignition terminal; 5 – ground terminal; 6 – stator; 7 – sensor; 8 – stator; 9 – rotor mounting bolt; 10 – segment key; 11 – crankshaft journal.
