All owners of backyard plots are faced with the problem of mowing the grass, which grows literally before our eyes, and during the season it is required to refine their plot several times. The usual manual scythe has long been replaced by petrol and electric trimmers. But the price for them does not decrease and is quite tangible for many owners of summer cottages and private houses. Craftsmen nevertheless found a way out of this situation and learned how to make trimmers with their own hands literally from improvised means, using gasoline and power tools that were not intended for these purposes.
Most often, a homemade electric trimmer is made on the basis of a conventional grinder, which is available to everyone home master... This tool is almost ideal for converting to a trimmer. It has more power than store devices and a greater number of revolutions per minute. In addition, the standard nut used in the grinder to secure the disks already has holes through which it is easy to insert the fishing line (cord).
So, there are many options for making a barbell (grip). The easiest one is longer than for a shovel, wooden holder... A grinder is attached to the end of it at the desired angle using ordinary tape. The fishing line is inserted into the 2 holes of the nut, after which it is twisted. Thus, in a few minutes you have a trimmer that can mow grass without any problems.
For the safety of using a homemade device, you can improve it by making a protective casing (how to do this will be discussed later).
For advanced craftsmen with a welding machine, you can advise a more perfect design for fixing the grinder and the protective casing. It is made from aluminum tube (serves as a holder) and a metal square profile. Looking at the picture below, you can understand the principle of making the holder.
The grinder is fixed to the holder with bolts inserted into the holes that are designed to attach the handle to the device.
The following photo shows how this structure looks from below.
By the way, the holder (rod) itself can be screwed to the holes for attaching the handle, when you want to make a simple trimmer that is easy to assemble and just as easy to disassemble if you need to use the grinder for its intended purpose.
To make it more convenient to hold the trimmer in your hands during work, and it does not rotate around the axis of the bar, you can attach to it side handle made from bent pipe.
The trimmer from the engine from the vacuum cleaner is made according to the same principle as from the grinder. The motor must be fixed on the rod, and either knives or a plastic or metal disc into which to insert the fishing line must be fixed to the motor shaft. The cutting tool is covered from above with a protective cover.
To prevent dust and small particles of cut grass from getting into the motor, removed from the vacuum cleaner, it can also be hidden in a plastic casing made from sewer pipe as shown in the following photo.
Since the motor in the vacuum cleaner is high-speed, it needs provide cooling... Therefore, under the washer, into which the fishing line is inserted, it is recommended to insert a homemade disc with cut and curved blades so that it acts as a fan that creates a vacuum. It is required so that air is sucked in through the hose from above and cools the motor.
In order to relieve the burden on the hands of the mower operator, the machine can be install on a platform with wheels... In this case, you will already get something similar to a lawn mower.
You can also use either a pulley with a suitable bore or a plastic cartwheel to secure the line.
The simplest mower in a matter of minutes is made from a drill or screwdriver... But first, you must make a knife from a sharpened metal plate with a hole drilled in the center. A bolt is inserted into this hole and clamped with a nut.
Since the drill with this attachment does not have a protective cover, such a tool is quite dangerous for the user. To protect yourself, you can place the drill, like the grinder (mentioned above), on a shovel handle or on an aluminum tube.
Also, to protect the user of the mower from knives, a cover can be attached to the drill (attached to plastic pipe, and put on the body of the device).
The drill is attached to the rod with clamps.
For the chainsaw, many different attachments have already been invented that expand the capabilities of this unit, for example, a cultivator, a drill, boat motor, as well as a scythe nozzle. You can see how it looks in this video. In case you want to make a trimmer from a chainsaw, then the maximum that you can do is lawn mower on wheels, since the engine of the unit is quite heavy, and it will not work to apply the above options for making trimmers (with a lower drive) to it.
Therefore, a trolley is made first. It can be welded from a corner 25x25 mm. The dimensions of the frame should be 500x600 mm. The wheels are attached to the corners of the frame.
When installing the handle of the trolley, make sure that it does not overlap the trigger (starter).
The gasoline engine is installed (screwed through the holes for fixing the tire) to the frame in such a way that the gearbox is turned 90 degrees and the shaft is at the bottom.
Now all that remains is to attach to the unit shaft cutting tool... This is done as follows.
Several holes must be made in the telescopic tubes so that the height of the knives above the ground can be adjusted.
It is better to make a knife of such a design as in the following figure.
Due to the fact that movable knives on rivets are fixed on the disk, they will simply bounce when they meet a stone or dry branch. This will protect the shaft and gearbox from damage that can occur when the tool is jammed.
The rivets that hold the knives on the disc must be metal.
The diameter of the disc (made from sheet steel 4 mm) must be 180 mm. Knives are made from strips 30 mm wide and 120 mm long, cut by a grinder from a hacksaw blade for wood.
If you need to mow plants with thick or stiff stems, ordinary fishing line will not cope with this task. Therefore, you cannot do without a special metal knife. Trimmer knives can be bought at a specialized store, or you can make yourself, for example, from an old circular saw blade(no soldering). The knife is made as follows.
If you are making a homemade mower, then you will definitely need a protective cover. It will protect your eyes, body and legs from injury from small stones and knife shards if they break.
The trimmer cover can be made made of aluminum sheet or thin sheet.
In this way, you can make and install a protective cover on a trimmer bought in a store if the guard breaks for some reason. Guards in factory devices are made of plastic and often break if you unsuccessfully hit the trimmer head on the ground to lengthen the line.
For more comfortable work with the trimmer, if it is intended to process a large area overgrown with grass, it is advisable to use a special belt. This device relieves fatigue from the hands and back of the mower operator and makes the process much easier when compared to the same job, but without the belt.
Belts are shoulder and knapsack... The shoulder strap is the most simple device and consists of a loop with two or one latch (carabiner), with which it is attached to the mowing unit. The second carabiner usually has a plastic plate that protects the operator's side from pressure from the trim bar.
The shoulder strap is usually used with light trimmers, weighing 3-4 kg. For heavier implements, it is more convenient to use a knapsack belt.
The trimmer strap can be easily ordered online or bought at a specialized store where these machines and accessories are sold.
The price of knapsack belts starts at 250 rubles and above.
If there is a desire to make it with your own hands, then any hostess, having looked at this device, can easily sew it from improvised means (old belts and belts). You may need to buy buckles and carabiners. But still, we recommend buying a ready-made knapsack suspension and not wasting time and money on making devices of a worse quality than the finished one.
How to put a knife on a trimmer
With the arrival of summer, many owners of personal plots are worried about the question related to how to put the knife on the trimmer. More pressing are the questions of why and when it is purposeful to replace the line on the brushcutter with a stronger cutting element. In our article we will try to disassemble all this and give useful tips summer residents.
A trimmer with a knife installed on it is more convenient just use for more comfortable mowing of the highest and hardened grass in the country. The line on the brushcutter in such cases does not cope. Installing a knife on a Chinese trimmer how to remove and install an old chain. The narrow one breaks very rapidly. Discussion the stihl fs 55 trimmer on the casing below I do not understand how to put the bobbin. The introduction of a thick 2.3 mm cord or homemade rods with cables forces the vegetation to wind up on the spool. This increases the load on the engine. As a result, the piston group and the rest of the moving parts of the unit wear out very rapidly.
If you create a weeds mowing with an electronic trimmer without a knife, only a fishing line, even a thick one with a curly section, will not solve the problem. There is always a risk of overheating the motor and damaging the flexible shaft. And it's all about the large torque of the electronic motor. The grass wound on the spindle makes a strong resistance to the shaft, which resembles a speedometer cable, which does not withstand and twists.
In order to protect the equipment from early wear, manufacturers have provided for the possibility of installing special knives on the trimmers. The design and shape of the existing cutting parts allows you to easily manage not only coarse and overgrown grass, but also successfully fight with young shrub growth.
Before taking and putting a knife on the brushcutter, we will find out what they are and in what cases they are used. Now manufacturers offer the consumer a huge number of types of these Supplies... In general, all cutting tools designed for mowing grass can be systematized:
The main material for the production of trimmer knives can be plastic or metal. The introduction of such consumable parts in almost everything depends on 2 characteristics:
Read the same
For safety reasons, manufacturers do not advise putting iron knives on electronic trimmers. Virtually all electric and battery powered brushcutters are equipped with plastic blades. How to correctly put the knives on the trimmer (brushcutter). Depending on the manufacturer, they can be of a solid disc-shaped design, with several blades, or in the form of a special mowing head providing for the installation of removable plastic blades.
Making a protective casing for trimmer.
Motokosa. How to replace a broken flap. The flap was beaten for several days. Maybe I'm out of luck. B high
Straight bar for petrol trimmer and curved for electric
To put a metal knife on an electric trimmer is not allowed by its design features.
It is these features that make it possible to use exclusively plastic knives on trimmers with electric motors. When hitting an obstacle, the blades are destroyed, thereby protecting the mower's legs from possible injury.
Plastic knives do a good job on overgrown and dry grass. They can mow nettles and burdock stalks.
The use of metal knives only on gasoline trimmers is also due to design features.
Read the same
Thus, gasoline trimmers with a metal blade installed are best used on large areas... They will successfully cope not only with high hardened grass, weeds, burdocks and nettles, but also shrubs, as well as young trees.
The shape of the blades of the disc supplied on trimmer nor does it affect the quality of the work performed. Speed does not depend on them either. Triangular, trapezoidal, rectangular shapes are all the marketing ploy of manufacturers.
If you are planning to harvest hay, it is best to use knives with a large number of blades on the brushcutter. Note discs with eight teeth or discs with four large blades and four additional blades. Two and three bladed knives will crush the grass hard.
Put a knife on a trimmer is not that difficult. The manufacturer completes his tools with a special pin that allows you to block the gearbox and a wrench with which the spool and fishing line are unscrewed. The most important thing is to observe safety precautions and the sequence of assembly and disassembly when changing cutting elements.
The algorithm for setting the knife to the trimmer is as follows:
Annotation on maintenance petrol trimmers and brushcutters
Oil- high-quality two-stroke oil for high-powered vehicles (10-15 thousand rpm, about 200 rpm). Do not use motorcycle oils (low engine speed) or for aqua equipment (other cooling system) - their introduction does not provide the required lubrication piston group and parts of the entire motor! Petrol- any kind of spotless high-octane gasoline (with a number of 92 and above, with a density in the range of 750-770 kg / m3). Fuel ratio- 1:50 (2%) or 20 ml / cm3 of oil per 1 liter of gasoline. For example, in transparent plastic bottle(1 l) pour in half a measure of gasoline, then add oil with a syringe (20 ml / cm3) and mix, add gasoline and stir painstakingly. If the quality of gasoline is not clear or the working conditions are difficult, then the amount of oil should be increased to 22-25 ml / cm3. Shake the mixture before each refueling. Having made the protective cover (how to install on the protective cover and on the trimmer. Changing the line on the trimmer how to install the mowing head and knife on the trimmer. Store the purchased fuel for less than 2 weeks. ), then it is not recommended to use it.
Run at least one fuel tank with the engine (without load!) With frequent changes in the number of revolutions ( idling- the highest speed). The next 5 hours of operation at a gentle (50%) load. After running-in, it is indispensable to check the engine speed (according to the electric tachometer in service center) and, as needed, adjust them by a specialist.
Similar posts
Engine. Air filter must always be spotless (without dirt or sawdust); the foam filter must be moistened with oil. The fuel filter must be inspected once a week (change as necessary). Check nuts and screws for tightness - prior to operation. Cleaning the muffler (or its mesh) and spark plugs from carbon deposits - if necessary. Set the coil with the cover 14 to remove the coil 17 as when closing the protective casing. Angle reducer. Once a day, clean it of dirt (a similar “fur coat” does not allow the gearbox to cool normally) and add grease for the gear pair.
Manufacturing protective cover for trimmer.
Manufacturing instruction protective cover for the petrol trimmer.
Similar posts
Fishing line and trim heads. Use only special mowing line - do not use wire or metal ropes! Install only a line of the diameter recommended by the manufacturer. Wrap tightly around the bobbin, but do not cross the threads. Clean the mowing head from dirt and lubricate if necessary. Remove the protective cover with the line to be properly installed on the shaft. Initially, in the trimmer, they are set how to properly wear the protective cover for. A deformed or worn head can damage the gearbox and / or the brushcutter shaft.
Cutting discs. Cutting parts must be well and correctly sharpened using the necessary templates and files and respecting the angles of the cutting parts, depending on the brand of the blade. Turn double-sided discs regularly by 180 ° and wear evenly. A blunt disc or a disc with poor or incorrect sharpening cuts poorly, and thereby overloads the engine, which leads to a rapid reduction in its service life. Protective covers. The motor is on an electric trimmer on them, since there is no protective cover with. It is forbidden to work without protective cover- this is dangerous for the operator's life and can overload the brushcutter engine. For each type of cutting attachment, only use its own protective cover.
A haircut. Hold the trimmer head directly off the ground at an angle. The end of the string does the work. Let the string run at its own speed. How to wind the fishing line on a thicker cord to install not they did not touch the protective casing. Do not press the string against the mowed area! This overloads the motor and mowing head - they can break down or melt!
Pruning with a knife. Mow with a pendulum motion from side to side, movement from right to left will be working, and from left to right it will be reversible. The blade should cut off the grass with its left edge (between 8 and 12 on the clock face). Compliance with the above recommendations will extend the service life of gasoline vehicles many times over.
How make a trimmer do it yourself
How to make a trimmer with your own hands
How to get rid of ticks on summer cottage told earlier, now the question will be considered - how to make a trimmer do it yourself from the most available means for this.
Now on sale you can meet different variants trimmers powered by both electricity and gasoline. But it is not always possible to purchase a trimmer, well, in most cases, it is not so necessary.
The advantages are homemade trimmer from a drill or a grinder, it will be that when it is necessary to mow the lawn near the house, the trimmer is easily assembled. Trimmer line, trimmer head, trimmer knife - how not to get confused in their characteristics and make right choice... If not needed, the drill or grinder is removed from the trimmer and used for their own intended purpose.
In order to make a trimmer from a drill, a lot of materials and tools will not come in handy. It will also not be necessary to disassemble the drill in order to do from it a manual trimmer with your own hands.
Similar posts
In addition, a drill replacement can be cordless screwdriver, which can be connected to the car battery to increase the duration of the trimmer.
The main requirements for a homemade trimmer are first placed on its safety. The knife of a homemade trimmer is very sharp, so the presence of a protective cover on the trimmer is an indispensable condition.
The same applies to the trimmer handle, which will hold the drill. How to make a homemade trimmer protection with your own hands In the summer, to a summer cottage. The handle should be made of strong materials, you can naturally also from wood, but it is better to use a duralumin pipe for these purposes.
Making a protective trimmer cover.
Motokosa. How to replace a broken flap. How to make a homemade trimmer protection with your own hands. How to make a fuel mixture for a trimmer or petrol cutter. The flap was beaten for several days. Maybe I'm out of luck. In high.
In addition, working with the trimmer after assembling it should be not only as safe as possible, but also convenient. Therefore, you should definitely adjust the trimmer holder to your height, maybe install an additional handle on it on the side, etc.
First, a trimmer handle is prepared, on which the drill should be fixed. Long bolts and metal clamps will be needed to secure the drill. It is imperative that the power cord of the drill is tied to the trimmer handle. The wire must not be loose and constitute a danger if it gets under the trimmer cutting element.
Similar posts
Homemade knife trimmer fastened to the drill with a nut and a bolt that is clamped in the chuck. Before that, be sure not to forget and install a protective trimmer shroud to ensure your own safety when mowing grass.
The trimmer blade can be made of tool steel or other very durable material... Coil for trimmer How to make a coil for trimmer Therefore, it is extremely important to match. You should know that the smaller the trimmer knife is, the better it will cope with cutting grass. The length of the trimmer blade depends primarily on the guard and the width of the cut. Most often, the length of the trimmer blade does not exceed 30 centimeters.
The question of how to make a trimmer from a grinder with your own hands is solved in about the same way as the above manufacturing trimmer from a drill. How to make a cover from a trimmer for a hole for a trimmer bar, etc. If you are interested in the following questions, for example: How to make a fuel mixture for a trimmer (petrol cutters). There is only a slight difference in attaching the grinder to the holder. The trimmer handle can be selected metal pipe, to which at the end you need to weld a plate with a hole to fix the grinder with a bolt.
Small changes were made to the knife homemade trimmer... In the case of using a grinder, here the knife is not in the form of a long rectangle. The knife of a homemade trimmer from a grinder is made from a disc on concrete, with pre-cut sharp edges, which are just intended for mowing grass.
The question of how do a trimmer from a drill or a grinder is completely solvable and in an independent way The main thing is not to forget about safety precautions and carefully study this issue.
Only after that, you can safely take on the manufacture of a trimmer do it yourself.
Similar posts
Correct technical service is the key to long-term and reliable operation of the tool. Primitive maintenance operations include timely lubrication of the gearbox and cleaning of the trimmer filter. The user should know how to lubricate the trimmer gear. Cleaning is done in stages: After removing the cover, the element is removed. Then it is washed with gasoline and dried ...
What kind useful homemade products can be made from a chainsaw? The chainsaw is very popular among DIYers, as it is a universal drive for unique homemade designs. Low weight and impressive power, coupled with small dimensions, allows this "lumberjack's dream" to be aggregated with an ice screw and a ...
Hand trimmers cut vegetation with either line or knives. At the beginning, the functionality of the trimmer is limited to mowing soft grass with a normal and low height, since plant residues are wound on a flexible shaft, in other words, they stick to the spool. With the installation of a trimmer knife, it is possible to cut harder trunks and cut young bushes.
The systematization you will like is done according to the following criteria:
The choice of the size and design of the trimmer knife is done depending on the intended goals, the type of bar and the power of the motor. If the trimmer bar is bent in the shape of the letter J, then you do not need to use a metal knife, since when in contact with a powerful obstacle, nettle, stone, trimmer will be sharply thrown back towards the mower. Then even the highest restrictive casing will not save the worker from a leg injury. On straight bar trimmers, the rebound distance will increase.
Plastic trimmer knives, while less durable, do the job of cutting most types of grass. In addition, their increased elasticity does not create additional loads on the flexible shafts. electric trimmers.
The configuration of the cutting edges determines the cut quality. For tough grasses, dead wood, stiff shoots, circular knives with the largest number of teeth are better: then, regardless of the speed of rotation flexible shaft, the cut will be spotless and even. The inertia of perforated knives is significantly less than that of solid knives, and this does not particularly affect the durability of the tool, taking into account the fact that the tool is made of high-quality tool steel. The exception is cheap Chinese-made products: there knives are made of any steel.
When the abilities of the fishing line are not enough, it is worth thinking about replacing it with a metal or plastic knife. If a removable knife is included with the trimmer, there are no problems: the replacement of the cutting equipment is done accordingly with the annotation on the operation of the trimmer. However, this does not happen every time.
Read the same
Find out the suitability of installing a knife on an existing electronic trimmer(there will be no similar problems with gasoline) there is an option for the actual number of revolutions flexible shaft... If, when replacing a spool with a fishing line with a knife, the engine gains the set number of revolutions per second or less, then the substitution is likely, otherwise the engine will overheat, and the trimmer gear will rapidly fail.
It is curious to compare with each other the three more common variants of knives - multi-pronged disc, also with 2 and 3 blades.
Motokosa. How to change a battered flap. The flap was beaten for several days. Maybe I wasn’t lucky. In high.
Usually, several such knives are included in the trimmer set, but you can also buy separately by measuring the outer diameter of the knife and the configuration of the bore. Nettle, disc knives from Stihl and Husquarna are interchangeable with each other. Circular knives differ in the number of teeth, height (different heights happen), and in addition, the continuity of the blade. Such knives are in most cases installed on trimmers from Stihl, Huter, AL-KO, equipped with a straight bar, and are more rigid. They manage well with the old shoots and long trunks, however, when working with young grass, the mowed mass adheres to the inner surface of the protective casing.
A trimmer with a perforated knife, in comparison with a solid one, gains momentum faster. Flaw circular knives- increased moment of inertia, therefore the starting power of the drive is increased. On cheap structures and with frequent stoppages in work, this leads to overheating of the motor and negatively affects its durability.
These knives complete their electronic trimmers trademark Bosch. Their moment of inertia is small and has virtually no effect on the drive's performance. Ease of operation of such a design is that separate replacement of all blades is permissible. In trimmers of such designs, the bar is bent in the shape of the letter J. The two-blade knives work stably on a homogeneous mowed mass. They perfectly throw the cut off growth to the side, do not allow the residues to stick or wrap on the boom shaft.
Three-blade and two-blade knives are quite competitive in terms of their capabilities with disc knives, however, the blade thickness should not be less than 2 mm. At the same time, forged knives are more durable than stamped ones (found on Chinese-made trimmers). It is easy to distinguish them - on the stamped blades, traces of the cut-off punch are clearly distinguishable with the presence of corresponding cleavage and shear zones, which is not the case for forged blades.
Read the same
"Shark" is essentially an attachment of three bladed knives, and each blade is fixed relative to the other at an angle of 120 °. The advantage of this design is in such a section that each blade can be adjusted individually. And therefore, when mowing a plot with different types vegetation (grasses, weeds, dead wood), the quality of mowing will be approximately the same. Today, as the interval between the mowing of the grass with each blade is reduced, the grass is thrown away more actively. The head "Shark" is compatible with many standard sizes of electric trimmers, has a low dead weight, but requires periodic adjustment of the blades, which are attached to the base with ordinary screws.
There is an option to lower the moment of inertia of the circular knife by independently perforating its surface, nettle, on a punching press. Perforations are made to be placed strictly symmetrically relative to the center of mass of the knife. The tool becomes lighter, and its cutting capabilities do not change. A useful effect is also given by the correct sharpening of the blades of the replacement knife. It is carried out at a low speed of a grinding wheel with normal grain size. The teeth are sharpened at an angle of 30 °. Do not use a tungsten carbide trimmer knife - the cut quality remains virtually the same and the weight of the tool will increase.
It is much easier to make a homemade knife in a bladed design. For this purpose you will need:
The view of a homemade trimmer knife is shown in the figure.
The tooling is made in this order. First, mark the overall dimensions of the device, in order not to go beyond the boundaries of the protective casing. Then a sleeve is made from a piece of pipe. To improve the fit, the sleeve is made split, and sits on the outer surface of the output part of the trimmer shaft. Since the diameter of the washer is determined only by the dimensions of the available space, it can also be selected from the nearest standard sizes. The washer is welded to the sleeve in such a way that the formed leg of the seam was the smallest.
