Sometimes the trunk capacity of a passenger car is not roomy enough for many motorists, especially if transportation of large cargo is required. A trailer is best suited to solve this problem.
Homemade trailers for cars
There are two types of trailers, manufactured by a specialized factory or home-made:
- Factory trailers do not require additional permits for their registration and registration. But at the same time, factory trailers do not always satisfy car enthusiasts with their technical characteristics, and if they do, their price is prohibitively high. And the quality of the trailers themselves is not at a high level, which requires additional investments after purchase to eliminate factory defects.
- A homemade trailer is a structure that a car enthusiast assembles according to his own drawing from a material that makes it obsolete in quality, while adhering to GOST standards for its assembly. As for the registration aspects of such a product, they are much more expensive than when registering a factory one, since additional permits are required to operate a homemade trailer.
If we look at it from an economic point of view, the cost of a homemade trailer, taking into account all registration costs, is significantly lower than buying a new one.
It is also worth considering that a homemade trailer will be of much higher quality than a factory one, if only because the entire manufacturing process will be controlled by the car enthusiast himself.
Set of tools and materials
The first thing you need to make your own trailer is a drawing.
It is also worth noting that the drawing must correspond GOST standards 37.001.220-80.
This standard specifies all the requirements that are necessary in order to obtain permission to operate a trailer and its further registration in the Interdistrict Registration and Examination Department.
In addition to the drawing, the following materials will be required to make a homemade trailer.
- Profile pipe 40x40 millimeters for constructing a trailer frame. You can use a larger pipe, but it is worth considering that this will entail an increase in the weight of the structure.
- For the sides it is recommended to use steel sheets with a thickness of at least 0.6 millimeters, but not more than 1 mm, as this can also lead to an unnecessary increase in the weight of the sight.
- For the bottom of the trailer, you can use OSB sheets or polycarbonate. The amount of material is calculated from the bottom area of the trailer.
- Metal beam 80x5 mm for the trailer axle.
- Hub for wheel mounting, will fit perfectly with the rear beam of the VAZ 2108.
- Two VAZ wheels with a diameter of R 13, R14 optional.
- Two shock absorbers from a Ural motorcycle.
- Two car shock absorber springs, can be used building from VAZ 2101 or ZAZ 969.
- Two-core braided wire for electrical wiring, approximately 10 meters.
- Side lights with stops and turns.
- A thick-walled metal pipe at least three meters long. D For the manufacture of a towing element.
- Towbar lock.
- Male-male connector for connecting the on-board network from the car.
To make a homemade trailer you will also need the following tools:
- Welding machine - preferably semi-automatic, but you can also use a regular arc one.
- Grinder and wheels for cutting metal.
- Drill and drill bits on metal.
- Roulette and hammer.
- Screwdrivers, wire cutters.
Once all the necessary tools and materials have been purchased, you can proceed directly to the assembly process itself without deviating from the dimensions indicated in the drawing.
DIY assembly
Materials for trailer assembly are cut according to the dimensions indicated in the drawing.
Assembling a homemade trailer consists of the following steps:
The trailer wiring is laid according to the same principle as in a car: the negative wire is attached to its frame (ground), and the positive wire is attached to the contact of the lighting fixture.
How to register a homemade trailer for a car?
To register with MREO A technical passport and product number are required.
Of course, a homemade trailer cannot have either the first or the second.
Therefore, in order to register a homemade trailer for it, it is necessary to provide documents that confirm that this product complies with GOST standards and is safe for use on public roads.
In order to obtain a document on the safety of a homemade trailer, you need to contact an accredited testing laboratory. After conducting a series of tests, the laboratory staff will issue (if the tests are successful) a certificate of the ability to safely use the trailer on public roads. With this document you can go to the MREO and legally register the trailer.
Also, do not forget that you will have to contact the office that deals with stamping numbers on vehicles, and only after the number is stamped on the frame of the trailer can you begin the process of registering it.
Registering a trailer
In order to register a homemade trailer, you will need the following documents:
- Statement to the head of the MREO for trailer registration.
- Identification.
- Registration certificate vehicle.
- Laboratory certificate authorizing the use of a trailer on public roads (for homemade trailers).
- Documents confirming ownership of the registered trailer(power of attorney, certificate of account).
- Receipts indicating payment of state duty and for the services of the MREO.
- Registered trailer or technical inspection report.
- OSAGO insurance policy.
The trailer registration process consists of the following steps:
- Writing an application. Having arrived at the MREO, you need to write an application addressed to the boss about registering the trailer. As a rule, a writing sample is issued along with the application form.
- Payment for services and state fees. After writing the application, the person is given a bank account where it is necessary to pay the state duty, MREO services and for materials (registration certificate, license plates).
- Submission of documents. After payment of the state fee and services has been made, the receipt along with the necessary documents and application is submitted to the registration window. Afterwards, you can go to the site and wait for the inspector who will inspect the trailer (if there is no inspection report).
It should be remembered that if the trailer was purchased new, then 10 days from the date of purchase are allotted for its registration. If the trailer is not registered within the specified period, the owner will have to pay a fine.
OSAGO for trailer
Oddly enough, you also need to purchase an insurance policy for the trailer. But, according to the law on compulsory motor liability insurance parts 2 and 3, not everyone is required to take out an insurance policy. Private owners of trailers for passenger cars who used them for personal purposes have the right not to purchase an insurance policy.
As for the list of trailers for which the purchase of an insurance policy is mandatory, it includes the following vehicles:
- Trailers for passenger cars of legal entities.
- Trailers for trucks and tractors.
- Trailers for buses.
- Trailers for motorcycles and scooters.
In order to issue an MTPL insurance policy, the trailer must undergo a technical inspection. Otherwise, the policy will be denied.
A car is not a luxury, as pedestrians believe. Man has made great strides in development, having mastered mechanized wheeled vehicles. Today, this vein, although not as strong, but no less intrusive, continues to excite the minds of motor vehicle enthusiasts from large factories to garage workshops. Exactly in that order. After all, the latter have fewer resources and a much greater desire to experiment. Designing a trailer for a car with your own hands is a suitable goal.
DIY trailer
The reason why drivers choose a homemade trailer for a passenger car: individual parameters, cost. Serial manufacturers offer any modification, but the further from the base, the higher the price. Why is this necessary if a pair of wheels, a metal profile and a tool are lying around in the garage? Registration will not cost more, and the experience gained is invaluable. Before constructing the future pride of the street, you need to understand the types of homemade trailers for cars.
Types of self-assembled trailers
Business and industry use professional trailers equipped with special equipment for a specific load. They are distinguished by additional load-carrying capacity and the ability to handle it efficiently under various conditions. Some components are made in the factory using complex technology that cannot be done in a garage: zinc coating, strong welding.
Homemade trailer frame
Therefore, you should not aim at a trailer over 750 kg, besides, it assumes category “E”. But if this state of affairs does not suit the motorist, then he challenges the biaxial design for universal use and tests as he pleases. Before the first modification.
DIY trailer
The choice of trailer type depends on what to transport and what materials for making it are lying around. A four-millimeter corner or profile, two wheels of a domestic car, a set of springs, wires with lights already bring the unit into the class of homemade single-axle trailers up to 750 kg. Plywood for the sides and bottom is not in short supply, unlike thick sheet metal, which still needs to be cut. The main thing is not to skimp on the coupling mechanism. Making a connecting unit will not cost you just bolts and nuts. For increased safety of a homemade trailer, it is better to buy a special fastener for the tow bar. Anyone who has decided to create a passenger trailer with their own hands already knows what a trailer is and what they are, but information on the standards for the manufacture of trailer hitch devices will make it possible to operate the miracle of technology even after the first traffic police stop.
You need to know this
Firstly, this is a simplified list of requirements of GOST 37.001.220-80, given below:
- Permitted trailer weight up to:
- 1.8 t;
- Not heavier than the weight of the tug or half of it when the trailer hitch is without brakes;
- Allowed length no more than:
- Not one and a half times longer than the car;
- Allowed width no more than:
- 230 cm;
- No wider than the car by 20 cm on both sides;
- Permitted height no more than:
- Not 1.8 times higher than the trailer wheel track;
- The center of gravity with a load is not higher than the track width multiplied by 0.725;
- Ground clearance is not less than the car's ground clearance;
- A homemade trailer for a passenger car can only be single-axle. (A twin axle is also a single-axle design, although it is called a two-axle design among car enthusiasts). The distance between the axes of the paired structure is up to 1 m;
- The trailer must have a load on each side of no more than 0.55% of its own weight;
- The coupling device must be equipped with:
- A permanent cable or chain in case of sudden disconnection of the trailer hitch from the car while driving;
- Homemade anti-rollbacks (shoes);
- Jacking platform;
- Removable lever brake;
- Mudguards, fenders;
- Signboard for the sign;
- Stable support;
- A spare wheel similar to the car;
- Lighting fixtures, wiring and plug.
Trailer manufacturing process
Making a passenger trailer with your own hands, based on the information above, prompts the craftsman to draw a drawing of the future model and search for materials of the appropriate size.
There are basic drawings. But there is one caveat: they require direct assembly with components, the absence of which can puzzle or even discourage you from making a trailer with your own hands. The effective path combines economy, the desire to cut, cook, twist and the ability to give a good result. Therefore, it is worth listing the parts necessary for manufacturing and dividing them into homemade and purchased:
- Square rolled metal 30x60 mm or 25x25 mm is suitable for a frame, rack, and additional stiffening ribs. Although a 40 mm corner is also suitable for the latter. A U-shaped channel is suitable for bridge beams.
- The sides and bottom are made of thick multi-layer plywood 10-12 mm or galvanized iron sheet 0.8 mm. When combined, you get an economical option. In any case, the structural fasteners for the sides must unite the body.
- The chassis is easier to find when disassembling a Zhiguli or Moskvich. It includes:
- Hubs;
- Springs;
- Spring earrings;
- Stepladder with pads;
- Shock absorbers;
- Wheels.
A complete find will be a success, and a separate selection if you know it won’t take much time. Chassis solution is 70%. If you buy an independent torsion bar or rubber-harness suspension, you will have to buy the rest of the chassis due to the least versatility. Few people like to bore a purchased spare part into old components. Shock absorbers are worth buying new.
- Fasteners and fasteners for beads are common in hardware stores.
- Three millimeter cable or chain.
- The electrics are made from multi-core cable. But you need to buy flashlights with an outlet.
- The tow bar clamp is something you don’t want to skimp on.
To make a two-axle trailer for a car yourself, you will need the same material, only in a double name. With the correct procedure, the first step will be the ability to weld metal, and the last will be the search for an awning or material for its manufacture. If you have never cooked, you need to contact a specialist, having previously prepared everything that needs to be welded. At the design stage, it is necessary to take into account the dumping system. If it is conceived, then the body structure requires hinge mechanisms and separate strength amplifiers.
DIY trailer assembly
You can’t ignore drawing up a drawing. Preparatory actions may not leave numbers in memory. Visibility provides visual control, understanding of the assembly, and, moreover, if there is help from the master during welding or milling. Summing up the collection of materials, components, and tools will give permission to begin actions:
- Channel cutting begins with measuring pieces of the required length.
- The sawn-off parts of the frame are placed on a flat surface for welding. Smooth angles and planes will ensure precise fixation of the sides. Next, the stiffening ribs are cooked. System of spars (longitudinal) and traverses (transverse parts).
- Before welding the spring brackets, measure one meter from the back of the trailer to the expected middle of the bridge beam. There will be a welding point there. The axis should be offset from the center to the rear side. The shock absorber mounts are also welded.
- Whether the drawbar is V-shaped or straight, it can be removable. Then you need to weld the brackets with holes for the bolts. The drawbar is centered.
- Next comes the installation of the chassis: axle, springs, shock absorbers. Hubs and wheels are installed.
- The inverted frame with wheels undergoes further assembly. A towbar is installed. It requires attention. A suitable option is to fix it on the tow bar and roll the trailer by the drawbar to the car. The hitch with the drawbar can be welded or bolted, dismountable. We must not forget about installing cables and safety chains.
- The procedure for installing the bottom and sides follows from the drawing. But after fitting, they must be removed to fix the wiring with lighting devices.
- Reversing lights, turn signals, parking lights and brake lights correspond to the car's lighting. For parallel connection, use the appropriate connector: plug. The socket is located on the tow bar.
- After checking the installed components, the wings are installed.
Video instructions for making a trailer
The sample test is carried out with a gradual increase in load. It is advisable that someone help in this matter, visually recording the operation of the suspension and coupling unit. Anti-corrosion coating is applied at any stage of installation. This is subject to availability of covered locations.
Registration of a homemade trailer with the traffic police
The last step will be to register a homemade model of your own production. The traffic police will send the owner and the trailer for examination. It is important that the laboratory is accredited. It is necessary to save receipts for used components, and most importantly, a certificate for the hinge device, that same fastening element. In such circumstances, it is better to buy it. From the standard papers you need: a copy of the owner’s and car’s passport, do-it-yourself photographs of a trailer for passenger cars, an application to the traffic police to register the towbar, a receipt for the state duty. If you had the documents, you first had to undergo a technical inspection, the positive decision of which recognized that the trailer complied with the standards, after which it was registered and numbers were issued. This procedure is described in more detail in
Events and exhibitions are constantly held to showcase automotive technology. Motorists love to show off a light trailer they created with their own hands, which fits the style of the car, at least due to the color scheme. Today it is profitable to make a trailer yourself. Individual solutions add to the collection of technical insights when designing a trailer. Reliability and safety remain the constant rule.
A homemade dacha trailer made from a car trailer: a photo of the construction of a camper with a detailed description, as well as a video showing a house on wheels.
We decided to build a small residential house on wheels so that we could travel to nature in our car. Since we didn’t have drawings of the camper, we decided to make a removable module for the factory trailer (so that there would be no problems with re-registration of the vehicle).
This is why it was purchased boat trailer from Kurgan plant(only in their title they don’t specify what kind of trailer it is. It’s just a trailer; other manufacturers indicate that it’s a boat trailer and you can’t put a house on it).
The dimensions of the module corresponded to the dimensions of the trailer - 1400 x 2400 mm. Naturally, the removable module must be durable, and a plywood house definitely won’t work for our roads; we had to weld a steel frame.
The base is welded from a 60 x 30 mm profile, the walls and ceiling are made from a 20 x 20 mm profile. 2 identical arcs were bent on a pipe bender.
The most difficult thing was to think through the doors; it took us 1/3 of the total time spent on the doors. Anyone interested in this topic has seen factory doors, ventilation hatches, gas stoves, sinks, heaters, etc. on American trailers. and so on. There is only one problem: cost. one factory door costs about 700-800 bucks (and you need 2 of them), a sunroof with an exhaust hood costs about 300-400 bucks, I didn’t even look at the sinks and stoves, and so it became clear that we would choose from what we found in hardware stores .
As a result, we made the doors ourselves, because with our course the budget for the doors alone came out to more than 100 thousand (on Alika, Ebay, in Europe, America, Russian online stores - the prices are approximately the same).
We decided to make the doors with power windows, because... This is the easiest way in our opinion. There is no point in describing the whole process, I will only say that making the doors was very tedious. but at cost they came out to 5 rubles per door, taking into account everything. the savings were worth it)
The outside of the body was sheathed with 0.8 mm aluminum sheets; we were looking for specially large sheets so that it could be covered with one sheet without joints. As a result, we found AMC2 sheets measuring 1500 x 3000 mm, which suited us quite well.
Now I would choose a composite material for cladding buildings, 4 mm thick (for those who don’t know, these are 2 sheets of 0.4 mm aluminum, and between them a special composite that ideally withstands all weather conditions).
We stuck aluminum onto a plywood backing, riveted it around the perimeter and sealed all the joints. It was possible to leave the trailer aluminum, but initially we wanted blue on the outside, so we ordered vinyl film for covering the vehicle from a printing house and covered it on top.
Many people ask about the refrigerator. There is no refrigerator, and there cannot be one, because... The module is removable and has its own car battery. The module wiring is completely autonomous and is not connected to the wiring of the car or trailer in any way. Therefore, there is no way to connect a refrigerator here. Although I don’t understand the problem if it can be placed in the trunk of a car.
We also made 2 220V sockets in the living area, a 400W inverter, enough for both chargers and a TV. LED lighting everywhere.
Water is supplied from a canister by a fountain pump, not very powerful, but economical.
We made a niche for the countertop under the kitchen, it seemed very convenient, but in fact the ribs on top and bottom were made of a 15 x 15 profile, a very flexible and not reliable profile. As a result, the niche bent a little and the chipboard table did not fit there, so we had to make it out of plywood.
After assembly, the trailer was tested by Karcher at all joints, cracks, etc. 100% tightness.
Costs for building a caravan trailer.
We started building the camper in May 2015, and finished it in June 2016. My friend and I work in shifts, i.e. per week 2-3-4 days could be devoted to the trailer. We were very stuck with the kitchen decoration and doors. If you expect to collect it in 3 months, add triple the deadline.
In terms of finances: everything was bought new, nothing used was used. The trailer itself cost 44 thousand, and about 110 thousand was spent on materials. Everything was fixed, right down to the gloves, so the price is close to the real one. You can do it cheaper, but you should know in advance.
By weight: the trailer + module weighs about 600 kg, the module itself is about 460-480 kg. The heaviness was added by a large number of chipboards, who will do it, look for a lighter material for the partitions.
The 1.4 Octavia passenger car pulls the trailer with a bang. On the highway I accelerated to 130 km/h, the trailer is not felt at all, the streamlined shape practically does not slow down. consumption increases by 1-2 liters. It’s difficult to drive on a bad road above 90, after all, the weight is not small, it jerks the car. But 80-90 is quite acceptable for such a trailer. I drove through fields, along dirt roads, and the trailer never hit anywhere.
A video detailing a homemade mobile home.
If you have a car, then you are probably quite often faced with the need to transport all kinds of cargo. There is no way to do this without using a light trailer. It, of course, can be purchased at a store of relevant goods, but it is possible to make such a design yourself.
Working on the frame
A homemade trailer, like a factory-type model, must have a frame, which is the basis of the structure. Its rigidity and strength will determine the durability of the trailer. In order to ensure greater reliability, it is recommended to use elements that will be connected to each other by welding. It is necessary to begin work by determining the dimensions of the element being described, or rather, width and length. The size will be determined by the outer edges of the frame components. In order to determine the final width of the frame, the thickness of one wall multiplied by 2 must be added to the distance between the inner edges of the side walls. If the frame will be located between the wheels and not above them, then the gap between the bolt and the tire should be taken into account.
If you decide to make a homemade trailer, then after determining the dimensions, you should try on the frame. To do this, the metal profile must be laid out on the surface, maintaining perpendicularity between the components. The elements must be connected to each other with clamps. At the same time, you should check the shape; to do this, use a tape measure to measure the diagonal of the resulting rectangle. The values must be equal to each other, deviations can range from 2 to 5%. The structure must have a stiffening rib, because a square and a rectangle are unstable structures.
Connecting a trailer to a vehicle
A homemade trailer must have a chain ball. To perform this element, it is necessary to remember that a shorter length of the connecting part indicates a quick response when the vehicle is moving. Even a slight lateral turn of the drive wheels will cause the trailer to move abruptly. This may cause the load to become damaged and fall. When making a homemade trailer, you need to choose the optimal length - ranging from 1.5 to 2.5 cm. When choosing a material, it is recommended to use steel sections, which will form the basis of the frame and connections. For the last element you will need 3 pipes. The frames can be connected to the pipe by welding, and for higher strength it is recommended to reinforce them using corners. Before welding, the master must try on the elements so that the coupling is made along the axis of the structure. When homemade trailers for a passenger car are made, at the same stage a safety cable should be installed, which can be replaced with a chain. If desired, you can install a folding wheel in the hitch area for comfortable transportation of the trailer without a vehicle.
Installation of the coupling
Homemade trailers for a passenger car must have installation that can be done using welding or bolts. Before final fixing this component to the frame, it is necessary to check that the dimensions of the frame pipes match the grooves of the gutter. The latter should not be larger than the width of the pipe; the excess in size can be a maximum of 5 millimeters. A welded joint can provide excellent strength, but if damaged, removal will require the use of a gas torch. The strength of a connection using a bolt is less. Bolts that belong to the eighth strength class should be used. Less durable ones will not be able to withstand shearing forces. To connect, you need to prepare two bolts; you should not use more, as this will weaken the frame element, as well as the coupling due to the presence of holes for fastening.
Working on the axis
Before registering a homemade trailer, it must be fully prepared for use. There is a rule according to which the trailer axle is located at a distance of 40% of the length of the structure from the rear side. After you can measure the distance, you need to indicate the location of the axis. It can be installed by placing the frame on the surface. In this case, you need to use two 4x4 blocks, and the spindle should hang freely. In the intended location for mounting the axle, paint must be removed from the surface of the frame. The step between the bushings must be divided into two, the resulting mark is marked on the surface.
A homemade trailer for a walk-behind tractor can be made using the same technology, but the dimensions will be much smaller. In order to check the dimensions, you need to measure the width of the frame again. After this, the wizard can begin the final installation. The elements are connected to each other by welding. It is recommended to use a spring-shock-absorbing suspension for the reason that it guarantees more impressive softness, although it is less durable.
Working on stabilizing jacks
When making a homemade one, it is important to ensure the horizontal position of the structure. The most suitable option is the corners of the frame. It is possible to install only on one side of the structure. If we consider the device from the point of view, it is recommended to use a screw mechanism. It can also be used to replace a wheel.
Summarizing
Homemade, just like for a car, will be able to expand your capabilities. The latter option can be used to transport goods, no matter what configuration they have. There is absolutely no risk of damaging the car. Although the trailer may have its own specific features, the recommendations given above are common to all options. If desired, a homemade trailer for a boat or car can be equipped with a braking system, as well as lighting. However, experts recommend trusting professionals to resolve these issues.
Trailer registration
If you are thinking about how to make a trailer, then you should be interested in the task of registering it. The design must undergo an examination, which is what the All-Russian Society of Automobile Enthusiasts, abbreviated as SAI, does. Each region has its own society. To pass the examination, it is necessary to make sure that the device complies with the existing GOST. You can familiarize yourself with state standards in the document GOST 37.001. 220-80. Before registering a homemade trailer, you should know that the above standard applies to all types of trailers that are intended to be towed by minibuses, as well as cars on public roads. The standard does not apply to those devices, the design of which was carried out before the approval of the technical specifications of the mentioned standard.
Conclusion
Before you start making a trailer, you should familiarize yourself with state standards so that you don’t have to redo the design later. The weight of the device should not exceed that permitted by the manufacturer. The weight must not exceed the curb weight of the vehicle. This figure is 1800 kilograms. The length of the device should not be more than 1.5 car lengths or a limit of 8 meters. These requirements must be taken into account at the trailer design stage, otherwise it will be impossible to use the design.
Making a passenger trailer with your own hands is quite simple if you have the materials and tools. Even if all materials are purchased, such a trailer will cost less than a factory one. Moreover, in most cases it is possible to use various available materials and devices. You can independently make a trailer of almost any size for certain tasks.
Next, we’ll look at how to make a trailer with your own hands using the example of a standard configuration product. You can change the sizes and other parameters as you wish. The main thing is to follow the basic principles of trailer assembly.
Materials for making a trailer
Basic materials you will need:
- sheet metal;
- metal profile of different sections (for the manufacture of frames, sides);
- wheels;
- strong axle;
- springs (shock absorbers) and other parts for suspension;
- bolts and other fasteners;
- movable canopies for opening the sides.
Tools required include a drill, angle grinder, welding machine, screwdrivers, hammer, vice, pliers, wrenches and some other hand tools.
In the photo of a self-made trailer you can see various variations of such designs. The list of required materials may vary significantly depending on the type of trailer.
Frame making
The frame is the basis of the entire structure. It must be strong and rigid. The purpose of the trailer and its capabilities depend on the frame. For example, if you need to make a trailer for a PVC boat that you plan to transport in an inflated state, you should take into account its dimensions. Based on these dimensions, the dimensions of the frame are first determined, and only then the main parameters of the trailer.
The frame can be made so that it is between the wheels, or located on top of them. This also affects the design features. The frame is made of a large-section metal profile and has a rectangular shape.
But, before assembly, it is necessary to determine the dimensions and drawings of the trailer. After determining the needs, put all the dimensions on the drawing. Here it is necessary to provide not only the parameters, but also all the components of the structure.
It is necessary to make a structure through which the trailer will be connected to the vehicle. The trailer's handling depends on its length. Do not make the connecting part too long, as this will impair controllability.
The recommended length is 1.5-2.5 m, depending on the size and purpose of the trailer. It is advisable to make the part from thick square profile pipes. Three pipes are required. Transverse supports should also be installed to enhance the rigidity of the structure.
The pipes are connected by welding. And to strengthen the connections, corners are additionally welded. Don’t rush to weld the parts, try on all the structures first.
A safety rope must be attached to the same part. You can also attach a compact wheel with a folding mechanism. This will simplify the process of manually transporting the trailer.
Coupling
Factory or homemade trailers must have a coupling. It is attached with a threaded or welded connection to the frame. The part that connects the trailer to the car is attached to this coupling. The coupling provides a movable connection.
It is better to use a threaded connection, this will allow you to easily dismantle the coupling if necessary. But, use only the most reliable, durable bolts.
Suspension axis
The axis should be shifted to the rear of the structure. From the end of the frame to the axle there should be 35-40% of the entire length of the trailer. To install the axle, the frame must be turned over. To install the axle, special bushings are used.
Spot welding technology is used to install the bushings. The bushings must be welded over the entire area of the product to ensure the most reliable connection.
It is advisable to equip the suspension with shock absorbers. This will make the structure softer and more durable. You can use a ready-made suspension from an old trailer or other automotive equipment.
Manufacturing of boards
The best option is to make the sides on a metal profile frame using sheet metal. But, in order to save money, you can also use wooden shields. Another fairly modern solution is the use of polycarbonate panels.
You can also use plywood panels. However, their thickness must be large enough, otherwise such sides will be damaged even when using the trailer without a load.
The advantage of wood and plywood is ease of processing, installation and low weight. But, this option has a limited scope of use. Wooden panels are attached to the profile with threaded connections.
In this case, additional corners must be installed in the corners to increase the rigidity of the structure.
DIY trailer photos
We also recommend viewing.