Grinders trim tabs how to choose

Contents of the article

• 1 Advantages of gas braids, their basic device
• 2 Options for choosing a gas trimmer
  • 2.1 Why use a mower?
  • 2.2 Type of gasoline engine
  • 2.3 Gasoline drive power
  • 2.4 Type and construction of the rod
  • 2.5 Handle type, belt system
  • 2.6 Working rigging of the gasoline braid
  • 2.7 Which brand prefer
  • 2.8 Video: How to prepare the purchased gasoline braidFirst of all, we will remove a small contradiction. In some publications on the Internet there is a very controversial classification, according to which only electric tools are classified as trimmers, completely separating this category from motorcycles with a gasoline engine. In others, all types of manual mechanized braids, both electric and ICE( pos. A) are included in trimmers, thereby distinguishing them from wheeled lawnmowers( position B) and even more so - self-propelled raiders( pos. B).
    

    The main types of mechanized mowers: A - hand( braids);B - wheeled;B - self-propelled( raiders).

    How really flawlessly correct - hard to say. However, the second type of classification still seems more obvious and justified. Without claiming absolute truth, we will still adhere to the definition that a trimmer is a hand tool for mowing grass with an electric or gasoline power train.

    Despite a very wide variety of models of gasoline trim tabs, most of them are made in a single circuit. As the power drive, an internal combustion engine is used, from which the torque is transmitted to the working cutting head. The illustration shows the main visible elements and components of the standard trimmer-trimmer:

    

    The majority of gasoline trim tabs are similar in their design.

    1 is a gasoline engine located at the top.

    2 - fuel tank.

    3 - a manual starter for starting the engine.

    4 - the rod connecting the engine with a working part of the trimmer. Inside the rod there is always a flexible or rigid shaft transmitting the rotation. The bar may be integral or demountable, consisting of two or more sections.

    5 - handle, which can be of various types, which, by the way, predetermines the placement of the main controls( post 6).

    7 - a motor that connects the control unit to the engine.

    8 - angle reducer, which transmits the rotation of the shaft to the working spindle.

    9 - cutting tool - special knife or coil( bobbin) with a cutting cord( fishing line).

    10 - protective shield protecting the operator's leg from injury

    The controls of the mower may differ somewhat in their layout, but usually include several keys and switches with the same functionality:

    

    Typical "set" of control elements of the gas trimmer

    1 - switch( toggle switch) of the ignition circuit. Allows you to instantly muffle the engine if necessary.

    2 - the main key that controls the throttle valve of the carburetor( the "gas" key).

    3 - safety key, preventing accidental pressure on the "gas".While it is not recessed, it is impossible to use the main key.

    4 - the control button lock is pressed. Facilitates the management of large amounts of work.

    

    The choke position switch is used to lightly start and quickly warm up the

    motokas. Typically, another control is located on the engine itself - the choke position switch. Used to facilitate the start and rapid warm-up of the engine in conditions of low air temperature.

    A few more details on the main elements and nodes of the mower will be explained below when considering the parameters of the tool selection. For now, a few words about the advantages of gasoline trim tabs:

    • Such a tool is not at all tied to the energy source - it's enough to have the necessary fuel with you to work on the terrain. In addition, even when working directly at home, there is a clear advantage - there is no permanently interfering power cable under your feet.
    • Unlike an electric trimmer, gasoline can be used even after the rain, and early in the morning, until the abundant dew came off. The top position of the engine completely excludes any dependence of the safety of the use of the instrument on the moisture level of the mowed grass.
    

    Petrol trimmer is able to cope with thick, thick grass thickets

    • Gasoline trim tabs are always more powerful, have higher engine life, are capable of continuous work without pauses, cope with hard grass and shrubs. The probability of overheating of the drive is many times less than that of the electrotrimmer.

    There are certain drawbacks to gasoline trim tabs:

    • The device is more complicated than electric analogues. Their operation and especially regular maintenance require certain knowledge and skills.
    • Petrol mowers are always significantly more massive, that is, working with them will require more considerable physical effort.
    • The technique of this class is very fastidious to the cleanliness of the fuel and the correctness of the composition of the fuel mixture. With poor-quality fuel, there may be interruptions or failures in the operation of the tool.
    • An internal combustion engine is always the presence of exhaust and a significant noise level.

    Nevertheless, if it is expected to handle large areas of land, or work on the ground where there is no possibility to connect to the power supply, nothing better than a gasoline trimmer is not found. The advantages of such a tool significantly outweigh its shortcomings.

    Options for choosing a gas trimmer

    Why use a mower?

    Before you start choosing the optimal model of a gasoline trimmer, you should very clearly outline the range of tasks that will be assigned to this tool. Proceeding from this, most of the evaluation criteria of choice will be predetermined.

    All petrol braids are conventionally divided into three main groups.

    • Professional or garden and park. This is, as a rule, an instrument of workers in communal services, enterprises of gardening and refining, forestry. Such motokosy have an increased resource, the ability to work long hours in the daily routine. They are equipped with powerful engines and enhanced transmission mechanisms. As a rule, they are equipped with knives that are able to cope with shrubby growths, and sometimes even with young trees.
    

    Brigade of workers of the city improvement service, "armed" with professional class motorcycles

    Naturally, such tools are massive enough, have capacious fuel tanks. To facilitate work with them, special belt systems are provided to remove the load from the operator's hands as much as possible. In addition, special backpack models have been developed, that is, the power drive, which is worn by the employee in the form of a knapsack, is connected to the rod by a flexible transfer shaft in the casing. This arrangement is less likely to cause operator fatigue during prolonged operation.

    

    Knapsack type knapsack

    Using a trimmer of this class in a personal environment looks redundant, the acquisition is unlikely to become profitable.

    • Semi-professional motorcycles are often called "farmer", which accurately determines their purpose. These are reliable assistants in the household, designed for regular, fairly frequent use with considerable loads.
    

    Motocos of semi-professional, "farmer" class - a reliable assistant to a rural inhabitant

    The power of their drive, the features of torque transmission, the availability of cutting attachments allow you to cope with vegetation almost no worse than the pro models. Farmer's scythes are used for care of a garden-garden, and for performance of profile agricultural works.

    • Finally, light motorcycles are an ideal option for periodic maintenance of the adjacent territory, garden and kitchen garden.
    

    Light gasoline trimmer is an excellent solution for regular maintenance of the adjacent territory of the

    . They are distinguished by their low weight, high maneuverability, and ease of use. The power of their engine, it would seem, is low( usually within 1000 W), but it is quite enough for mowing grass and small shrubbery. The main cutting tool is the cord( fishing line), although some models may include knives.

    The permissible duration of non-stop operation is low, and is usually limited to the capacity of a small fuel tank.

    Type of gasoline engine

    Two types of engines can be installed on gasoline braids - two-stroke and four-stroke. It should be noted immediately that this does not directly affect the power of the tool - there are also more professional motorcycles with a two-stroke drive, and small trimmers of the "amateur" class equipped with four-stroke ICE.

    • Two-stroke engines attract their unpretentiousness in work. They run well even in cold weather, are simple in the device, easier to repair. Prices for them are relatively low, which predetermines a very wide demand among consumers.

    There are a lot of drawbacks.

    - First of all, for filling motorcycle with a gasoline engine, you have to prepare a fuel mixture of gasoline A-92 and a special engine oil. The operation, in principle, is simple, but requires carefulness and strict observance of proportions. The prepared composition can not be stored for long - its properties are lost with time. That is, work with the trimmer will have to be preceded each time by preparing a fuel mixture.

    

    For a two-stroke engine it is necessary to prepare a fuel mixture in the manufacturer's specified proportions

    - The second disadvantage is the large amount of exhaust, which is important if the work is carried out near residential buildings.

    - And thirdly, such a tool is distinguished by its high noise level, which must be taken into account when using it, for example, in the early morning hours, in order to avoid misunderstandings with neighbors.

    • Four-stroke engines of these three mentioned drawbacks are stripped. They have separate tanks for refueling with gasoline and engine oil. At work, they produce much less noise, and the total amount of exhaust gases is significantly reduced.

    Such engines usually have a higher engine life, are capable of continuous operation without pauses, they use fuel much more economically.

    Disadvantages of such ICE:

    - The design is more complicated both for the device and for maintenance.

    - Four-stroke engines are always heavier than peers with the same power of push-pull analogs.

    - The main disadvantage, although somewhat arbitrary, can be called the high cost of gasoline trim tabs equipped with four-stroke engines.

    • Attention should be paid to the design of the fuel tank - it is very convenient if it is made of translucent plastic, as it allows you to visually track the amount of fuel remaining in the fuel tank.
    

    Conveniently, when the translucent walls of the fuel tank allow you to monitor the presence of fuel in it.

    • . Virtually all motorcycle engines( with rare exceptions) are equipped with a manual starter - with a drum, an exhaust cable and a handle. Some models, in addition, have a modern easy launch system - FLASH STARTER.Pulling out the cable, the operator does not transfer the rotation directly to the crank-and-crank assembly of the engine, but squeezes a special spring, which, in turn, will already give the twisting impulse to start. Thus, the operator does not have to overcome the compression jerks, the launch becomes more simple and smooth, requires much less physical effort.
    

    Light-weight smooth start system FLASH STARTER with a platen spring

    • For simplification of start-up, the "primer" button must be on the power block of the scythes. A few presses on it before starting will ensure the exit of air residues from the pipeline and supply the necessary amount of fuel to the carburettor.
    

    The location of the "primer" button on different models of motorcycles can have its own features

    The power of the gasoline drive

    The engine power can lie in the range from 700 ÷ 800 to 2500 or more watts. The choice directly depends on the expected load on the tool. In principle, it is power that predetermines the operational classification of gasoline trim tabs.

    This parameter is sometimes indicated in the horsepower. The ratio is simple - 1 kW = 1.36 "horses", or, conversely, 1 horsepower = 0.74 kW.

    • For household class models, as a rule, enough power up to 1 kW.Petrolling with such a drive will calmly cope with the usual grass, sedge, small young shrubby growth.
    • The power of "farmer" gasoline trim tabs usually lies in the range of 1.5 to 2 kW, which already allows for more serious work with the use of knife attachments.
    • Powerful professional tools, over 2 kW, have the full range of possibilities, and the use of special circular saws makes it possible to cut not only the thick bush, but even cut down young trees with a barrel thickness of up to 20 -30 mm in diameter.

    Naturally, the increase in capacity is accompanied by an increase in the weight of the gasoline tank and its cost. So it is necessary to clearly represent the planned scope of the tool.

    Type and construction of the

    Rod The bar with the gear shaft located inside can differ in two ways.

    • The straight rod is more typical for professional or "farmer" models. The shaft, which transmits the rotation, along its entire length is a rigid core made of high-strength alloy. It relies on several roller bearings, and is capable of transferring considerable effort to the working head of the tool without the risk of damage.
    

    Similar models, but with different configurations of the

    . The curved bar makes the motorized motor more ergonomic - it is much more convenient to handle such difficult tools, for example, near trees, flower beds, benches, etc. In addition, the operator spends much less effort to maintain the cutting nozzle at a certain height. However, this is achieved by the fact that the rod has a flexible drive, which is always more vulnerable to loads, and the probability of its failure in an abnormal situation is much higher. This type of rods is more typical of small and medium-sized motor vehicles, not designed for heavy loads.

    • The bar can be integral - from the engine clutch unit and to the gearbox of the working part. Advantages - again, the integrity of the transmission shaft. Disadvantage - when transporting or storing a gasoline trimmer of this type requires a lot of space.
    

    Collapsible knot of the movable mowing line

    The demountable rod makes the tool more convenient in terms of transportation and storage. In addition, some petrol tank models assume the use of specialized working attachments - they are adapted specifically for the

    demountable boom coupling. The drawback is clear - any excess drive connection is always an additional vulnerable place prone to wear. In addition, the operator is required to monitor the condition of this node, not to allow accidental land or sand entering it, to carry out maintenance, etc.

    Handle type,

    belt system To keep a bulky and heavy construction in a given position, controlling the movement of the cutting head parallel to the ground level is not an easy task. Therefore, it is extremely important to select a model for the convenience of its operation, and this directly depends on the configuration of the handles and the belts used.

    Recommendations in this issue is difficult to give - every potential user in choosing a gasoline scoop must independently try on a tool for himself, assess the degree of convenience with him. In this case, of course, should also take into account the duration of the work.

    • For models of a professional or "farmer" class, T-shaped handles resembling a bicycle handlebar are more typical. On the right handle are usually located the controls of the instrument. Such a configuration of handles, together with a properly selected belt, is convenient for long work on a large area, allows you to make wide movements, as when working in a conventional braid.
    

    Motocycles with different types of handles: T-, D- and J-shaped

    . D-shaped or J-type handles are usually mounted on light motor scooters. They are more convenient to operate the tool when performing more "fine" maneuvering work. The control unit is located on the boom, shifted towards the engine.

    All handles have a fastening system that allows you to move from along the rod, rotate about its axis, and in the case of a T- or J-shaped configuration - also change the departure value to the left or to the right. All this makes it possible to fine-tune the motokos under the operator's individual characteristics, to ensure its balance and to achieve maximum ergonomics.

    • The choice of a belt is also worth taking with all seriousness.

    If you expect a long work, especially - with a fairly heavy motorcycle professional or semi-professional class, it is better not to regret money for the purchase of a knapsack belt system. Such equipment will evenly distribute the load throughout the shoulder girdle and back of the worker, significantly reducing the level of fatigue. In addition, a special patch on the thigh of the operator will reduce the degree of transmitted vibration and protect against possible burns from the engine warming up during operation.

    

    The belt system, backpack or usual shoulder, is selected according to the scale of the forthcoming works of

    . For short gardening works with a light petrol trimmer, a normal shoulder strap with a soft wide top strip is also enough. The cost of such a belt, of course, many times less.

    Working rigging of the

    gasoline braid Work tools of the gasoline braid can be included in the kit or can be purchased separately.

    • Almost all models are always equipped with a coil( bobbin) for winding a certain amount of cutting line( cord).Typically, this device allows you to adjust the length of the protruding ends of the line in a semi-automatic mode - on the lower plane there is a wide stop button. When lightly strikes it against the ground, the stopper releases the inner coil, and the line under the action of the centrifugal force comes out. On the protective cover there is a special knife, which cuts out the ends of the cord to the required length.
    

    A bobbin with a string( cord).The arrow shows the stopper button

    The recommended diameter of the cutting cord is indicated in the parameters of the gasoline nozzle. Usually it is from 2 to 3 mm - quite enough for grass and thin shrubs.

    • Knives( milling cutters) are used for mowing thick grass, sedge, cane, shrubs. They can differ in the configuration, the number of cutting blades. Some cutters resemble circular circular saws - installing them on powerful gasoline pumps allows you to fight against young trees.
    

    Different types of knives and cutters for the

    toolboxes. Some cutters are designed specifically for mowing grass for harvesting purposes - unlike the same cord, they do not crush the grass, but provide a smooth cut.

    Self-activity in the use of knives and milling cutters - is unacceptable. Manufacturers of gasoline pumps indicate the possibility of using a particular type of cutting tool. Neglecting the recommendations may cause the trimmer to malfunction.

    • There are also special nozzles on the market, which significantly extend the functionality of the motorbike. They can be included in the kit or purchased separately, as necessary, but in any case, the possibility of their application must be specified by the manufacturer.
    

    Special nozzles significantly expand the functionality of the gasoline braid, turning it into a universal garden tool

    So, on a gasoline braid with a collapsible rod, a brush cutter, a small chain saw for cutting off tree branches,snow, and even various cultivators for surface tillage.

    Which brand to prefer

    The variety of models presented on the market can puzzle an unsophisticated buyer. What kind of gasoline pump should I prefer with equal performance?

    Certainly, it is necessary to be guided by the manufacturer's reputation, the warranty period of the tool, provided by it, and the extent to which the network of servicing models of a particular brand is developed in the region of residence, to what specific technical support it will be possible to count in case of unforeseen breakdowns.

    Husqvarna, Makita, Stihl, Oleo-MAC, ECHO are considered to be the leaders in the manufacture of such tools. Although these brands are worth a lot, they fully correspond to the quality standards. It deserves only positive assessments of the production technique of Hitachi, Patriot, Caiman, Huter, Hyundai. If you do not want to spend extra money just for the brand, then it's quite possible to purchase a high-quality and relatively inexpensive tool of Chinese brands or assemblies - Intertool, Rostech, Sadko. A good reputation is also earned by domestic gasoline braids, for example "Cedar" or "Izhmash".

    In any case, purchase the tool only in specialized stores, where you can read the terms of the warranty and make a note of the date and place of purchase. Unfortunately, the market of instruments of this class is literally teeming with low-quality counterfeits, and the probability of buying such a "gift" in the spontaneous market or with hands that will quickly fail is extremely high.

    Further - a short review of popular motorcycle models of different manufacturers:

    Model name	Illustration	Brief description of the model	Average price level
    "Husqvarna 323"		A modern gasoline tank equipped with a restart system directly from the control handle. Power 0,9 kW.Two-stroke engine. Gas tank transparent, 0.5 liters. Hard drive shaft, non-assembled rod. "Bicycle" handle, belt rigging on two shoulders «Duo Balance». Weight - only 4.5 kg. Nozzles - trimmer head( bobbin) with a 2.4 mm fishing line, and a 4-blade blade for mowing grass.	25 000 rub.
    «Husqvarna 122C»		Comparatively inexpensive motocos of a household class. Two-stroke gasoline engine capacity of 0.6 kW. D-shaped handle on a curved, non-separable rod with flexible drive. Cutting tools - only the trimmer head under the line 2 ÷ 2,4 mm. Light engine starting system. The weight of the braid is 4.2 kg.	11 500 rub.
    «CARVER GBC-31FS»		Model of Russian design and Chinese assembly with compact four-stroke low noise engine. Power - 1 kW. "Bicycle" handle, straight rod with one connecting collapsible unit. Hard drive. Working tool - trimmer head for fishing line 2,4 mm and disk knife( 48 teeth). The weight of the braid is 7.6 kg.	9 000 rub.
    «ECHO GT-22GES»		Products of the famous Japanese company. Model of a household class, for care of local areas. Two-stroke gasoline engine with a capacity of 0.67 kW. Curved bar with flexible drive, non-separable. The weight of the braid is 3.8 kg. Trimmer head with a semi-automatic feed line with a diameter of up to 3 mm. D-shaped handle. Electronic ignition and start-up system.	11 300 rub.
    «Makita EM2600U»		Petrol unit with two-stroke engine, 0,83 kW. Direct, non-separable rod with rigid drive, supported by high-strength bearings. Cutting tools - trimmer head( fishing line up to 3 mm), and a four-piece knife. "Bike" handle with rubberized comfortable handles to reduce vibration. Easy start system. The weight of the braid in assembled form is 5 kg.	16 000 rub.
    «Huter GGT-800T»		Inexpensive high-quality model of a household class of German assembly. Power two-stroke engine - 0,8 kW. Direct, non-assembled rod with flexible drive inside. "Bicycle" handle, shoulder strap. The weight of the trimmer is 7.1 kg. Cutting attachment - Trimmer head under the line of 2 mm and a three-piece knife.	6 800 rub.
    "Caliber BK-1000"		Russian-made motorcycle, Chinese assembly. Two-stroke engine with a power of 1 kW. The rod is straight, with flexible drive, collapsible. "Bicycle" handle, shoulder strap. The weight of the product in assembled form is 6 kg. Cutting attachments - trimmer head and three-piece knife. Diameter of cut plants - up to 13 mm.	5 900 rub.
    "Cedar BG-3700"		Motocos of domestic production of professional class, featuring increased engine power( 3.7 kW) and a low price. Straight bar, solid solid shaft. "Bicycle" handle. Weight 9.8 kg. Complete with trimmer head and three knives - 2 and 3 lobed and 40-tooth. Designed for the widest range of work	from 7 500 rubles.

    And in the end - useful video information about the assembly of the motorbike, its preparation for work and the first launch of the tool.

    Video: How to prepare an acquired gasoline braid for work