KMZ-8119: technical characteristics and device

Device

The towbar under consideration includes the following parts in its design:

• Frame and drawbar.
• Awning with arches.
• Body.
• Chassis.
• Lock.
• Support stands.
• Electrical equipment.
• Alarm system.

The frame of the MMZ trailer is made of steel by welding. It consists of a pair of longitudinal beams and three transverse elements. The spars have a trapezoidal cross-section (50/32/25 mm) and are made of steel. A locking device is welded in the front part of the converging side members. In the middle there are brackets on which the suspension springs and hydraulic shock absorbers are mounted. The rear cross member is equipped with buffer and support strut mounts. In addition, holes are made in the frame for bolting the body.

Characteristics of MMZ trailers

The body part is made of steel by welding. The bottom and sides are made by stamping from sheet steel (0.7 mm). Wheel niches are located inside the body near the side walls. The floor is covered with a rubber corrugated cape. The upper frames of the sides are equipped with sockets for mounting awning arches, which are pipes of a certain diameter. The awning itself is made of tarpaulin, fixed to the arches using a special cord, which is threaded through eyelets located along the edges of the canvas.

The lacing is carried out between the eyelets and thrown onto the strapping hooks, which are welded to the sides. The chassis of the MMZ trailer consists of the following elements:

• Wheels with VAZ-2101 type tires.
• Tubular axle with axles welded at the edges.
• Transverse and longitudinal rods.
• Spring suspension mechanism.
• Telescopic type hydraulic shock absorbers.
• Shock absorber fixing brackets.
• Rubber buffers.
• Otboynikov.

MMZ - trailer for a passenger car: technical characteristics, modifications, repairs

The MMZ trailer has been in serial production since 1972. The device is designed for transporting various types of cargo and tourist equipment. The base tractor for this unit is the VAZ-2101. Both vehicles have the same components: tires, shock absorbers, bearings. The MMZ trailer can be used in conjunction with other passenger cars of domestic and foreign production, which are equipped with a standard towing unit.

Device

The towbar under consideration includes the following parts in its design:

• Frame and drawbar.
• Awning with arches.
• Body.
• Chassis.
• Lock.
• Support stands.
• Electrical equipment.
• Alarm system.

The frame of the MMZ trailer is made of steel by welding. It consists of a pair of longitudinal beams and three transverse elements. The spars have a trapezoidal cross-section (50/32/25 mm) and are made of steel. A locking device is welded in the front part of the converging side members. In the middle there are brackets on which the suspension springs and hydraulic shock absorbers are mounted. The rear cross member is equipped with buffer and support strut mounts. In addition, holes are made in the frame for bolting the body.

Characteristics of MMZ trailers

The body part is made of steel by welding. The bottom and sides are made by stamping from sheet steel (0.7 mm). Wheel niches are located inside the body near the side walls. The floor is covered with a rubber corrugated cape. The upper frames of the sides are equipped with sockets for mounting awning arches, which are pipes of a certain diameter. The awning itself is made of tarpaulin, fixed to the arches using a special cord, which is threaded through eyelets located along the edges of the canvas.

The lacing is carried out between the eyelets and thrown onto the strapping hooks, which are welded to the sides. The chassis of the MMZ trailer consists of the following elements:

• Wheels with VAZ-2101 type tires.
• Tubular axle with axles welded at the edges.
• Transverse and longitudinal rods.
• Spring suspension mechanism.
• Telescopic type hydraulic shock absorbers.
• Shock absorber fixing brackets.
• Rubber buffers.
• Otboynikov.

Equipment

The MMZ passenger trailer is equipped with three support legs. They are mounted on a platform to block the suspension springs. The electrical equipment of the device is of a single-wire type, powered by the vehicle's on-board voltage of 12 V. It also includes a pair of tail lights, a license plate light, and a set of wires with a plug.

The rear light elements are of a two-chamber type (in the upper compartment there is a single-filament turn signal lamp, and in the lower part there is an analogue with two threads, indicating the brake light and dimensions).

Peculiarities

The front side of the MMZ trailer is equipped with a pair of reflective reflectors of a round configuration and a white color scheme. At the rear there is a pair of red triangular reflectors. In 1986, the board began to be made collapsible, and new reflectors appeared. Improved variations received a rear-biased axle, smaller wings, and mudguards. Later they began to produce models without bumpers, instead of which there were simply two protrusions, options with updated optics and different combinations of reflectors. The frame number is located on the right under the folding part of the side.

Modification of MMZ trailer

Below is one way to modernize the device in question. The essence of tuning is to dismantle the body and replace all elements to the maximum. Initially, we install a new lock, then sandblast and paint the sides. The main process includes the following steps:

• Replacement of rear shock absorber rubber bands with bushings.
• If these elements are suitable for further use and do not show signs of deformation, it is better to leave them, especially if they were made during the Soviet Union.
• As spring mechanisms, you can install analogues from Oka or Zaporozhets (if a constant and maximum load is provided). In the second case, you will need to purchase spring ties.
• Parts from a VAZ-2101, Moskvich or Niva are suitable as rear shock absorbers.
• For fastening, use 12*60 mm bolts.
• The wooden cross members under the body can be replaced with a metal profile.

If the tires rub against the springs, use an additional spacer from the VAZ-2101 brake disc.

Modernization

Trailers for passenger cars, the price of which starts at $200 (depending on the condition of the “cart”), can be improved in one more way. Stages of work:

• Replacement of the coupling device with a new version.
• The hubs and handbrake are installed.
• From an ordinary jack you can make an additional support on the drawbar.
• Next, the headlights are replaced (you can buy new elements or use existing headlights, for example from a VAZ-2108).
• The structure is sheathed with galvanization.
• Further modification of the MMZ trailer consists of restoring the suspension. To do this, we replace the hubs with plates from the VAZ-2108 (from a bent beam).
• The frame is strengthened.
• The structure is being painted.

Technical specifications

Performance characteristics of the tow hitch in question:

• Total weight – 300/450 kg.
• The mass of transported cargo is 135/285 kg.
• The maximum speed when coupled with a car is 80 km/h.
• Length/width/height – 2.6/1.6/1.02 m.
• Ground clearance – 25.8 cm.
• Wheel track – 1.34 m.
• Platform area – 2.12 sq.m.
• Dimensions of the internal part – 1./1.5/0.38 m.
• The connection is of the ball type.

Recovery

Repairing an MMZ trailer can be done as follows (the original model was practically coming apart at the seams):

1. Resuscitation begins with careful straightening of the body and sealing all cracks by welding. Next, the diagonals are checked, the sides are pulled together with soft rolled wire and the corners are further strengthened. A couple more amplifiers are welded onto the bottom part. This operation is due to the fact that in the standard version the bottom is equipped with only one amplifier, which is not enough for full operation. As a result, the metal breaks and the bottom simply falls through.
2. You can use improvised means to weld a new body bottom as an additional layer on top of the main element. Several pieces of iron 3 mm thick are quite suitable for this purpose. To begin with, the segments are welded together and then with the main coating. For reliability, the entire structure is fixed with bolts and press washers.
3. We install reinforced springs.

After restoration, the MMZ-81024 trailer was subjected to increased loads (transportation of cement, sand, crushed stone). After 4 months of use - no complaints, even compared to the new model.

Negative reviews

The comment is given about the standard trailer MMZ-81021. Owners note the small body size of 180*160 mm, while inside there are huge niches for wheels. It is not very convenient to carry it, since only the middle part of the rear door opens. The ultimate dream is to transport 3-meter boards. There is also practically no place to place furniture, due to the same wheel arches.

The frame is weak and deforms even with a slight overload. The springs are also not very strong, and the short drawbar does not allow for normal backing. The result is an inconvenient design, suitable only for transporting fruits and vegetables.

Positive Feedback

Positive reviews concern the restored and reinforced trailer. The device was made from practically “killed” MMZ. It is worth noting right away that the costs of restoration were simply meager. Details about what work was carried out are written in the “Restoration” section. Now the device can easily transport up to one ton of cargo over long distances. Compared to the new analogue - much better. The only negative is that the unit is 50 kg heavier.

Competitors

In order to choose a good trailer for a passenger car, the price of which depends on many factors, you should pay special attention to the manufacturer. The durability and practicality of the device depend on the quality of the components and materials, as well as the quality of the device’s painting.

Towbars from the Moscow company MZSA have received good reviews. The model line includes products with aluminum or steel sides, additional protection, large caps, and enlarged sides. The manufacturer also offers specialized designs for transporting boats, boats and other small vehicles. A distinctive feature of this manufacturer is the powder coating method using metal and ceramic inclusions. This provides excellent reliability and safety.

Other manufacturers

Among the leading trailer manufacturers are . The company specializes in the production of heavy products aimed at transporting yachts, boats, and large industrial equipment. Recently, the model range has been replenished with lightweight modifications that can be equipped with an awning for an MMZ trailer. In addition, the manufacturer claims that, upon customer request, it can supplement the unit with all possible additional structures.

Also popular on the trailed equipment market are models from the Ukrainian enterprise “Kremen” (Kremenchug). The products are distinguished by a high margin of safety, as they are made of high-quality metal, thickened profiles and are equipped with a reinforced frame. The disadvantages of these devices include their heavy weight, which makes the trailer not very convenient. It is worth noting that the range of this manufacturer is limited to single-axle modifications with an average load capacity. Nevertheless, the company remains among the leaders in the relevant market.

In conclusion

Despite the fact that the MMZ trailer was produced back in the days of the Soviet Union, it is a worthy competitor to all modern models. By the way, many users note that products manufactured in the USSR give a head start to many current devices not only in price, but also in quality.

Equipment

The MMZ passenger trailer is equipped with three support legs. They are mounted on a platform to block the suspension springs. The electrical equipment of the device is of a single-wire type, powered by the vehicle's on-board voltage of 12 V. It also includes a pair of tail lights, a license plate light, and a set of wires with a plug.

The rear light elements are of a two-chamber type (in the upper compartment there is a single-filament turn signal lamp, and in the lower part there is an analogue with two threads, indicating the brake light and dimensions).

Peculiarities

The front side of the MMZ trailer is equipped with a pair of reflective reflectors of a round configuration and a white color scheme. At the rear there is a pair of red triangular reflectors. In 1986, the board began to be made collapsible, and new reflectors appeared. Improved variations received a rear-biased axle, smaller wings, and mudguards. Later they began to produce models without bumpers, instead of which there were simply two protrusions, options with updated optics and different combinations of reflectors. The frame number is located on the right under the folding part of the side.

Modification of MMZ trailer

Below is one way to modernize the device in question. The essence of tuning is to dismantle the body and replace all elements to the maximum. Initially, we install a new lock, then sandblast and paint the sides. The main process includes the following steps:

• Replacement of rear shock absorber rubber bands with bushings.
• If these elements are suitable for further use and do not show signs of deformation, it is better to leave them, especially if they were made during the Soviet Union.
• As spring mechanisms, you can install analogues from Oka or Zaporozhets (if a constant and maximum load is provided). In the second case, you will need to purchase spring ties.
• Parts from a VAZ-2101, Moskvich or Niva are suitable as rear shock absorbers.
• For fastening, use 12*60 mm bolts.
• The wooden cross members under the body can be replaced with a metal profile.

Why is this necessary?

And indeed, why take and change a ready-made trailer if initially its layout or design suited you completely?! The question is purely personal and depends on the individual needs of the car owner.

Let's take a few good trailers as an example:

Good vehicles with enviable technical characteristics for many manufacturers. But if suddenly there is a need to use them to transport boats or to transport a motorcycle, then they will not be able to cope with such tasks.

Yes, any standard trailers are perfect for traveling to your dachas and loading several bags of potatoes collected from the garden. But I want something different and more.

I would highlight several main goals that car owners pursue when deciding to change a trailer:

• increase functionality;
• increase carrying capacity;
• change reliability parameters for the better;
• modernize the purely appearance of the vehicle.

Now let’s go through each of the points separately and decide what can be done in this or that situation with your factory standard towed vehicle.

Reliability

If you are concerned about the issue of reliability, then it is better to immediately buy a more expensive trailer that is resistant to all loads and impacts. Then you won’t have to think about whether it can last 5-10 years.

To reduce the rate of wear, that is, increase the reliability of your car, truck or boat trailer, you can:

• make the lining of the body and bottom of the trailer using ordinary plywood;
• replace standard optics with LED ones, which last longer and place less load on the car’s electrical system;
• apply anti-corrosion agent to the body;
• treat the body with high-quality paint;
• put up an awning (we talked about it separately in this article).

It is possible to replace the hubs, modernize the suspension and other improvements. It is very popular to switch the Bee trailer to springs with a standard torsion bar. It has a good effect on the reliability, performance and behavior of the trailer on roads of varying quality. So it's worth thinking about.

Functionality

Many are more interested in the functional side of the trailer, that is, its ability to provide various additional capabilities.

Various options available:

• extension of the standard drawbar for transportation of large cargo;
• switching to R13 or larger wheels to improve cross-country ability;
• installation of auxiliary structures inside the trailer;

Everything here is limited only by your imagination, needs and real possibilities. It is clear that it will not be possible to make a whole huge motor home from a small cheap trailer.

Yes, upgrading a boat trailer into a cargo trailer is a more complex process, because you will have to create the frame, sides, and install an awning with your own hands. It is easier to make a boat out of a cargo boat, because all unnecessary structures are removed and the corresponding limiters and fasteners are installed. And that’s it, the vehicle for transporting the boat is ready.

There are many examples of photos and videos where craftsmen slightly changed the design of caravans, or turned them into a real work of art. There is always something to rely on, where to take examples and inspiration.

Load capacity

If you need to transport cargo weighing up to 1.3 tons, then it is enough to have a regular single-axle trailer.

But sometimes it is necessary to increase the load capacity, for which another 1 axle is added. From single-axis we get biaxial. The solution is good if it justifies itself from the standpoint of active exploitation.

Be prepared to stand in lines and deal with paperwork. Such a conversion into a two-axle vehicle requires re-registration of the trailer with the traffic police. Otherwise, fines and even more serious consequences of illegal alterations cannot be avoided.

Modernization

Trailers for passenger cars, the price of which starts at $200 (depending on the condition of the “cart”), can be improved in one more way. Stages of work:

• Replacement of the coupling device with a new version.
• The hubs and handbrake are installed.
• From an ordinary jack you can make an additional support on the drawbar.
• Next, the headlights are replaced (you can buy new elements or use existing headlights, for example from a VAZ-2108).
• The structure is sheathed with galvanization.
• Further modification of the MMZ trailer consists of restoring the suspension. To do this, we replace the hubs with plates from the VAZ-2108 (from a bent beam).
• The frame is strengthened.
• The structure is being painted.

Legality of modernization

I will not talk specifically about how to do this or that tuning. Is it possible to change the design at all? This is the first question that needs to be answered.

I'll say this. Some changes may not require any adjustments to your documents. But radical tuning will potentially become the subject of disputes with road service employees.

Therefore, before turning your regular car trailer into a camper or using it as a motor home, seek advice from the traffic police.

Tuning requires obtaining appropriate certificates of changes in the design of the vehicle. You will have to go through a number of offices, pay state fees, stand in lines, etc.

Although many simply ignore it. They modernize the trailer the way they want, and on the spot with the traffic police officers they find out how legal it is and how to circumvent such prohibitions. If you want to get rid of unnecessary traffic stops and incomprehensible fines, go through the lengthy but legal procedure of re-registering a trailer. This is the best option, in my opinion.

Well, or instead of converting it to a PVC boat, immediately buy yourself a trailer designed and certified specifically for such purposes. Remodeling is a troublesome task, although it is always nice to see the results of work done with your own hands.

Technical specifications

Performance characteristics of the tow hitch in question:

• Total weight – 300/450 kg.
• The mass of transported cargo is 135/285 kg.
• The maximum speed when coupled with a car is 80 km/h.
• Length/width/height – 2.6/1.6/1.02 m.
• Ground clearance – 25.8 cm.
• Wheel track – 1.34 m.
• Platform area – 2.12 sq.m.
• Dimensions of the internal part – 1./1.5/0.38 m.
• The connection is of the ball type.

Recovery

Repairing an MMZ trailer can be done as follows (the original model was practically coming apart at the seams):

1. Resuscitation begins with careful straightening of the body and sealing all cracks by welding. Next, the diagonals are checked, the sides are pulled together with soft rolled wire and the corners are further strengthened. A couple more amplifiers are welded onto the bottom part. This operation is due to the fact that in the standard version the bottom is equipped with only one amplifier, which is not enough for full operation. As a result, the metal breaks and the bottom simply falls through.
2. You can use improvised means to weld a new body bottom as an additional layer on top of the main element. Several pieces of iron 3 mm thick are quite suitable for this purpose. To begin with, the segments are welded together and then with the main coating. For reliability, the entire structure is fixed with bolts and press washers.
3. We install reinforced springs.

After restoration, the MMZ-81024 trailer was subjected to increased loads (transportation of cement, sand, crushed stone). After 4 months of use - no complaints, even compared to the new model.

A little about the company

Despite the fact that the project to create the plant was signed back in 1939, its construction was delayed until 1947. This was facilitated by martial law. But three years later, the first branded product was released - a caterpillar tractor. The production of special equipment lasted until 1962, after which the company directed its production forces to the development of an artillery model range and infantry fighting vehicles.

The year 1992 was marked by the production merger into OJSC Kurganmashzavod, as well as the establishment of export supplies. KMZ trailers and agricultural machinery appeared on the official website relatively recently. Now you can find the following products in the catalog:

• mounted buckets;
• rippers;
• spare parts for KMZ trailer;
• cleaning equipment;
• drilling equipment;
• concrete mixers;
• power units;
• KMZ car trailers;
• transport vehicles;
• mini tractors, etc.

The main production forces are concentrated in Chinese factories. Due to this, the company significantly reduced the cost of its own products. Thus, KMZ passenger trailers were able to seriously compete even with imported equipment.

Model range and prices

The modern market is overflowing with a variety of offers from various manufacturers, but the Kurgan trailer was distinguished not only by its availability, but also by positive reviews from customers. The best variations include the following models:

Trailer KMZ 8119

The tow hitch has a strong welded frame, which ensures durability and reliability of the device. The entire structure is reinforced to eliminate the possibility of deformation from overload. Thanks to the independent suspension, this model is characterized by increased stability and is not subject to rocking, which is so common in modern models.

8119 model 185 cm long, 160 cm wide, side height 30 cm. Trailer load capacity is 500 kg

The wheel hub does not protrude beyond the dimensions, so the device is easy to operate even in confined spaces. The design has a folding drawbar, this allows you to store the towbar in a vertical position. The upper part can be covered with an awning, which makes it possible to transport cargo in any weather.

The disadvantages of the model are that it has not been produced for a long time, so KMZ 8119 can only be found on the secondary market. Here its price varies within 20,000 rubles; the cost is directly influenced by the year of manufacture, condition and safety of the original configuration.

VIDEO: How to properly install the drawbar extension on 8119

Trailer KMZ 8136

The compact trailer KMZ 8136 is designed for transporting small-sized and light cargo weighing up to 390 kg.

Trailer KMZ 8136

The platform area of ​​the model is 2.23 m, and the dimensions are equal to the following indicators:

• length – 1850 mm;
• width – 1204 mm;
• height without covering with awning - 25 cm.

The curb weight of the KMZ does not exceed 160 kg, so the trailer is suitable for installation on any passenger car, even low-power ones. Its price is 30,000 rubles. The features of the model include a monolithic bottom made of aluminum, an extended drawbar with a mechanism for turning the body without the need to disconnect the trailer, galvanization, a traction type coupling system and folding sides.

VIDEO: Where is the serial number on the KMZ-8136 passenger trailer (for registration with the traffic police)

Trailer KMZ 8284

The model is used for transporting a variety of cargo, while it can be used in combination with any vehicle equipped with a towing device. The design has a spring shock-absorbing suspension, and the package includes an awning and a removable frame.

Trailer KMZ 8284

As an additional option for the KMZ 8284 trailer, there are 2-row or single-row sides with a height of up to 33.5 cm. The body of the trailer element is covered with galvanized steel, which, according to the manufacturer, eliminates the possibility of corrosion.

Specifications:

Price 37,100 rub.

Thanks to the lever-spring suspension, the model almost completely imitates the trajectory of the car without cutting corners. In addition, silent blocks from a Zhiguli car are suitable for this variation. As for the minuses, the list of shortcomings includes the following factors:

• with frequent use, the laminated plywood on the bottom will soon break;
• when transporting cargo in the rain, you can be sure that it will get wet due to the large gaps between the sides;
• in 3-4 years the first rust will appear on the sides and this despite the galvanized coating.

Overall, this is a very successful model that will serve as a real assistant in any household. In addition, it can be used as a boat trailer due to its long length.

VIDEO: What are the advantages of Kurganmashzavod products

Trailer KMZ Krepysh 8213

The main features of the Krepysh are the ability to transport cargo up to 550 cm long. This is thanks to the extension drawbar that comes with the device. The model also involves adjusting the ground clearance and height of the trailer body using an additional row of sides.

In general, the model weighs 750 kg, it is capable of transporting cargo weighing up to 565 kg, while its curb weight does not reach 190 kg. The design has a spring suspension, which makes the towbar more controllable and maneuverable. The axle can accommodate wheels with a diameter of R 13-16. The length of the body is 185 cm, its width is 121 cm, the height of the sides is 25 cm, the distance to the awning is 75 cm.

Trailer KMZ Krepysh 8213

The total length of the model is 3.6 m, width 1.71 m, height – 1.35 m. The tow hitch in the basic configuration is sold at a cost of 34,000 rubles, and in the full configuration – up to 65,000 rubles. Thanks to a variety of additional options, the user will be able to independently choose the option that suits them.

VIDEO: Review of the light trailer Krepysh 821303

Negative reviews

The comment is given about the standard trailer MMZ-81021. Owners note the small body size of 180*160 mm, while inside there are huge niches for wheels. It is not very convenient to carry it, since only the middle part of the rear door opens. The ultimate dream is to transport 3-meter boards. There is also practically no place to place furniture, due to the same wheel arches.

The frame is weak and deforms even with a slight overload. The springs are also not very strong, and the short drawbar does not allow for normal backing. The result is an inconvenient design, suitable only for transporting fruits and vegetables.

KMZ "Trudyaga"

A trailer for a passenger car significantly expands the capabilities of the vehicle in terms of the volume of cargo transportation. It is convenient to use both for solving everyday problems and for professional purposes. Without going beyond the overall dimensions, without changing the design of the chassis, the equipment can be modernized without special permission from the traffic police - extending the sides, making a booth. One of the successful models of the domestic manufacturer is the KMZ 8119 “Trudyaga” trailers.

The body structure of the KMZ 8119 “Trudyaga” passenger trailer is a rectangular steel frame covered with profiled metal sheets. The wheel arches are located inside the body and do not protrude beyond the overall dimensions. On the opposite side of the drawbar, the body has a folding tailgate, secured to the base with the help of canopies. It is fixed in the closed position with special latches.

Characteristics of the KMZ 8119 “Worker” trailer WEIGHT: 235 kg, permissible trailer load up to 450 kg.

General dimensions of the platform: - length 1850 mm, - width 1600 mm, - side height 300 mm.

Tilting platform.

The cost of renting a trailer KMZ 8119 “Worker” is 450 rubles / day (No discount) Conditions for issuing a trailer for rent: - Availability of a passport; — Deposit 5000 rubles; — 100% payment of the rental amount; Rent per day, 2 days or more/repeat request - 20% discount To book a specific day, call 8(3852)69-08-88 or use the form below.

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Other manufacturers

Among the leading trailer manufacturers are . The company specializes in the production of heavy products aimed at transporting yachts, boats, and large industrial equipment. Recently, the model range has been replenished with lightweight modifications that can be equipped with an awning for an MMZ trailer. In addition, the manufacturer claims that, upon customer request, it can supplement the unit with all possible additional structures.

Also popular on the trailed equipment market are models from the Ukrainian enterprise “Kremen” (Kremenchug). The products are distinguished by a high margin of safety, as they are made of high-quality metal, thickened profiles and are equipped with a reinforced frame. The disadvantages of these devices include their heavy weight, which makes the trailer not very convenient. It is worth noting that the range of this manufacturer is limited to single-axle modifications with an average load capacity. Nevertheless, the company remains among the leaders in the relevant market.

Why is this necessary?

And indeed, why take and change a ready-made trailer if initially its layout or design suited you completely?! The question is purely personal and depends on the individual needs of the car owner.

Let's take a few good trailers as an example:

Good vehicles with enviable technical characteristics for many manufacturers. But if suddenly there is a need to use them to transport boats or to transport a motorcycle, then they will not be able to cope with such tasks.

Yes, any standard trailers are perfect for traveling to your dachas and loading several bags of potatoes collected from the garden. But I want something different and more.

I would highlight several main goals that car owners pursue when deciding to change a trailer:

• increase functionality;
• increase carrying capacity;
• change reliability parameters for the better;
• modernize the purely appearance of the vehicle.

Now let’s go through each of the points separately and decide what can be done in this or that situation with your factory standard towed vehicle.

In conclusion

Despite the fact that the MMZ trailer was produced back in the days of the Soviet Union, it is a worthy competitor to all modern models. By the way, many users note that products manufactured in the USSR give a head start to many current devices not only in price, but also in quality.

I decided to capitalize my MMZ 81021 trailer. I removed the body and replaced everything I could. Since I had a new lock in stock, I adapted that too. In general, all that remains is to sandblast and paint the sides. “Estimate”: Replacing rubber bands from the rear shock absorber of a VAZ 2101 - 20 pcs + 10 pcs bushings. — If the elastic bands are not eaten, torn, or cracked, do not change them under any circumstances because the USSR quality speaks for itself. (new Balakovo ones, they have already started to crack) The springs are from Oka, but if you often transport heavy things and the trailer sags a lot and “walks along the road” - install from Zaporozhets, having first purchased spring ties. Rear shock absorbers from VAZ 2101 2 pcs. (but it’s better from the Niva because they have double action or from the Muscovite 2140, 412 they are a little longer and cheaper) Bolts 12x60mm I threw out the wooden cross members under the body, replacing them with an iron profile. I assume the factory installed them to make the design lighter. If, when installing the wheels, the rubber touches the spring, install the VAZ-2101 brake disc spacer 2101-310301 see photo www.autoopt.ru/catalog/01…a_tormoznogo/#prettyPhoto The MMZ-81021 trailer, commercially produced since 1972 (Fig. 30) is intended for transportation of various cargoes and tourist equipment. The main tractor vehicle is the VAZ-2101 Zhiguli, with which the trailer has the same components: wheels, tires, shock absorbers, bearings. The trailer can be used with any other passenger cars, both domestic and foreign, that have a standard towing device. The technical characteristics of the trailer are given in Appendix 3. The main components of the trailer: frame with drawbar, body, awning and awning arches, chassis, locking device, support posts, electrical equipment and alarm system. The trailer frame (Fig. 31) is steel, welded, consists of two longitudinal beams (spars) 4 and three cross members 1, 2 and 5. The cross-section of the spars is trough-shaped, section size 50X32X25 mm, material - steel 20. The front converging ends of the spars 4 are welded locking device 8. Brackets 3 are welded in the middle part for attaching suspension springs and hydraulic shock absorbers. Brackets 7 for attaching the buffer and brackets 6 for installing support posts are attached to the rear cross member. The frame has holes for bolting the body.

MMZ 81021 frame number

Hi all! Today I would like to touch on a topic that will in many ways take us back to the past, but at the same time will allow us to remain in the present. After all, we are talking about the MMZ trailer. This is a Soviet-style development that has a long history of existence.

Although the manufacturer’s arsenal included models such as 8113, 81024 and even tractor trailers marked 771 and 771B, the main asset of the manufacturer is still considered to be model 81021. It is this trailer that we will focus on, and also compare its characteristics a little with the more advanced version represented by 81024.

Just looking at the photo, you can understand that you are unlikely to be able to buy a new MMZ. Just recently I came across an advertisement with an offer like selling MMZ in perfect condition. The condition is really good, there are springs, a well-preserved awning and even polished wheels. But now almost all MMZ in this form are alterations, where spare parts were changed, the same lights, springs, etc. were restored.

A little history

The author or creator of such a trailer is the Mytishchi Machine-Building Plant. Hence the name MMZ. This enterprise is an integral component of the association, which is widely known as Metrovagonmash. Even during the times of the Union, the plant produced an extensive range of products, among which there was a place for passenger trailers.

MMZ began producing trailers for passenger cars back in 1972, which was far away for many of you. This was due to the fact that the AvtoVAZ company actively began to fill the domestic market with its cars. You may be surprised, but today there are about 200 thousand still serviceable trailers produced by the Mytishchi plant. With proper storage and preservation, serious results can be achieved. Although MMZ are mostly in demand among those who are interested in buying and converting trailers.

It cannot be said that these trailed vehicles have an ideal body, unique technical characteristics or other undeniable advantages. No. It's just a good trailer of high quality, which was in its time. This allowed them to survive to this day.

Purpose

The first serial trailer from MMZ was the immortal model 81021. It was created specifically for installation on VAZ cars.

Initially, the model was developed as a tow hitch for the VAZ 2101, that is, the Soviet Kopeyka. It is not surprising that the vehicles received similar shock absorbers, identical bearings and even identical wheels. In fact, all the components of the chassis for 81021 were already there. All that remains is to install them on the body and make some modifications. Thus, the plant came up with an ideal partner for Kopeyka, which the owners of these cars immediately took advantage of. They started buying 81021 very quickly and actively.

If we talk about the dimensions of the pioneer, they were 1850x1600 mm. This made it possible to transport all kinds of cargo, making the trailer universal and multifunctional. The design provided for a side with a height of 450 mm and an awning, which was installed on a metal frame. As a result, the total volume of the MMZ was about 1200 liters.

Soon trailers began to be adapted for use on vehicles of other smaller classes. They were intended for cars that were then produced by factories such as AZLK, VAZ and IZH.

Interestingly, the trailer from MMZ, intended for AZLK, received the same design elements as those used on the vehicle itself. For such vehicles, the load limit was set at 135 kilograms. It should also be noted that the GAZ plant produced models for middle-class cars. That is, MMZ made trailers for the then elite and for many inaccessible Volga. The load on the coupling device was a good 50 kilograms, and trailers were allowed to be operated at speeds of up to 80 kilometers per hour.

At one time, 81021 was recognized as a necessary and extremely useful device. This was due to the fact that the trailer could perform several important functions.

Now on Avito and other portals you can find used trailers from different manufacturers, or purchase a new vehicle from a huge assortment. Back then the choice was limited.

But in fact, people did not need a huge choice. They were quite satisfied with the opportunities that MMZ provided them with. After all, with the help of their trailers it was possible to:

• deliver industrial goods;
• transport food;
• transport agricultural products;
• deliver construction materials.

Due to its versatility, MMZ has solved a number of transportation problems. The awning protected from dust and precipitation, the spacious body made it possible to transport fairly large quantities.

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