Benzokosilki trimmers how to choose

With the advent of spring-summer season to all owners of suburban areas always gets the same problem - lawn care and lawn and the fight against the fast-growing weeds and wild shrubs punched shoots.Usual braid does not always become a good helper: the first to use it, you need a certain amount of experience, and secondly, in cramped conditions of the site is almost impossible to operate such an instrument between the trees, bushes, benches, columns, borders, etc.

to resort to manual, quite time consuming operations, it makes sense to buy a trimmer, or, in other words - a motorized scythe, electric or petrol driven.In the case where a lawn or a lawn are situated in the vicinity of the house, small in size, and are not intended to work with a greater workload, it may well be enough electrical appliance.But much greater capabilities have benzokosilki trimmers how to choose that - will be discussed in this publication.

Benefits gasoline braids, their basic unit

First of all, remove the small conflict.In some publications, the Internet is a very controversial classification by which to trimmers include only power, completely separating this category from brushcutters with a gasoline engine.In other trimmers to rank all types of mechanized hand scythes, and electricity, and the internal combustion engine (poz.A), thus highlighting their difference from the lawnmower wheel (item B.), And even more so - propelled the Raiders (poz.V).

How indeed perfectly right - hard to say.However, the second type of classification still seems to be more clear and reasonable.Without claiming to be the absolute truth, though we adhere to the definition that the trimmer - a hand tool for mowing grass with an electric or gasoline power drive.

Despite the great variety of models gasoline trimmers, most of them carried out by a single scheme.As the actuator is used internal combustion engine, from which the torque is transmitted to the working cutting head.The illustration shows the main elements and nodes visible standard benzokosilki-trimmer:

1 - gasoline engine, located at the top.

2 - fuel tank.

3 - recoil starter for starting the engine.

4 - bar connecting the engine to the working part of the trimmer.Inside the rod is always flexible or rigid shaft that transmits rotation.The rod may be solid or collapsible, consisting of two or more sections.

5 - the handle, which can be of various types, which, incidentally, prejudice and placing primary controls (item 6)..

7 -trosik linking the controller to the motor.

8 - bevel gear that transmits rotation of the shaft to the working spindle.

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

10 - a protective shield that protects while the operator feet from injury

Agencies benzokosilkoy control may differ slightly in their arrangement, but typically include multiple identical in functionality buttons and switches:

1 - button (toggle switch) ignition.It allows you to instantly switch off the engine if necessary.

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

3 - safety key that prevents accidental pressing the "gas".While it is not recessed, use the main key is impossible.

4 - lock keys pressed.It simplifies management for large volumes of work.

Typically, one control is at the engine - this switch air damper position.Used to facilitate the rapid start-up and engine warming up in low temperatures.

few details about the main elements and nodes Motor mower will be described below, when considering the choice of instrument parameters.In the meantime, a few words about what are the advantages of petrol trimmers:

• This tool completely attached to the power supply - to work on the ground is enough to have with them the necessary amount of fuel.In addition, even when working directly from the house there is a distinct advantage - there is constantly thwarted by the power cable down.
• Unlike electric trimmer, gasoline may well be used and after the rain, and in the early morning before it went heavy dew.Top-mounted engine eliminates any whatsoever dependence safe use of the instrument on the level of humidity mowed grass.

• Petrol trimmers are always more powerful, have a higher service life, capable of continuous operation without pauses, to cope with tough grasses and shrubs.The probability of a drive overheating - many times less than that of Elektrotrimmer.

peculiar petrol trimmer and certain disadvantages:

• device they have - more complex than that of electric counterparts.Their operation and especially - regular maintenance require specific knowledge and skills.
• Gasoline mowers are always significantly heavier, that is, working with them requires a considerable physical effort.
• this class technique is very choosy to clean fuel and the correctness of the fuel mixture.With the low quality fuel possible disruptions or failures of the instrument.
• internal combustion engine - it is always the presence of exhaust and significant noise levels.

However, if you plan to process larger areas, or work in the area, where there is no possibility to connect to the power supply, nothing better than a gasoline trimmer is not found.The advantages of this tool significantly outweigh its disadvantages.

select Options petrol trimmer

What need benzokosilka?

Before choosing the optimal model of the petrol trimmer, should be very clearly outline the range of tasks to be undertaken by this tool.From this perspective, it will be predetermined by the choice of the majority of the assessment criteria.

All petrol scythe is conventionally divided into three main groups.

• Professional or gardens.This, as a rule, employees of utilities tool, landscaping companies, and refining, forestry farms.These mowers have a high resource capacity for long hours of work on a daily basis.They established a powerful engine and enhanced transmission mechanisms.As a rule, they are equipped with knives, which are able to cope with the shrub undergrowth, and sometimes - even with young trees.

Naturally, such tools are massive enough to have capacious fuel tanks.To facilitate the work with them provide for special belt system, to maximize the load off the operator's hands.In addition, we developed a special backpack model, that is, an actuator, a worker puts on a backpack is connected to the pole flexible transmission shaft in the housing.This arrangement causes less operator fatigue after prolonged use.

use the trimmer in this class in terms of personal management looks redundant, the acquisition is unlikely to be cost-effective.

• scythes semi class is very often called the "Farmer", which accurately determines their destiny.They are reliable helpers in the household, calculated on a regular, frequent enough to use with considerable loads.

power their drive torque transmission characteristics, equipment cutting nozzles allow to cope with the vegetation is almost no worse than the pro model.Farmers used mowers and garden care, garden and to perform specialized agricultural operations.

• Finally, light brushcutters - ideal for periodic maintenance of the local area, a garden and a vegetable garden.

They are distinguished by low weight, high maneuverability, ease of operation.The power of the engine, it would seem, is not high (usually in the range of 1000 watts), but it is enough for cutting grass and small bushes are overgrown.The main cutting tool acts cord (fishing line), although some models can go and knives.

permissible duration of non-stop operation from them is small and is usually limited to a small capacity of the fuel tank.two-stroke and four-stroke -

gasoline engine type

on petrol braids are two types of motors can be installed.It should immediately be noted that it does not directly affect the power tool - and there are more professional brushcutters with two-stroke drive, trim tabs and small "amateur" class, equipped with a four-stroke internal combustion engine.

• Two-stroke engines are attracted to its simplicity of use.They run well even in cold weather, it is easy on the device easier to repair.Prices are relatively low, which predetermines a very wide demand among consumers.

Deficiencies have quite a few.

- First of all, brushcutters for refueling with petrol engines have their own cooking fuel mixture of gasoline A-92, and a special engine oil.The operation, in principle, is simple, but requires care and precision of proportions.The mixed composition can not be stored for a long time - its properties are lost with time.That is the work will have to trim every time preceded by the preparation of the fuel mixture.

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

- And third - this tool has high noise level that have to be taken into account when it is used, for example, in the early morning hours in order to avoid misunderstandings with neighbors.

• four-stroke engines of the three mentioned deficiencies deprived.They have separate tanks for refueling with gasoline and motor oil.In operation, where they make less noise, and significantly reduced the total volume of the exhaust gases.

Such engines typically have higher service life, capable of continuous operation without pauses, they are much more economical fuel consumption.

Disadvantages of ICE:

- design - more complex and on the device, and for maintenance.

- four-stroke engines are always harder equal to them in the power of two-stroke counterparts.

- The main drawback, though somewhat arbitrary, can be called the high cost of gasoline trimmers equipped with four-stroke engines.

• should pay attention to the fuel tank design - very convenient if it is made of translucent plastic, since it allows you to visually track the amount of fuel remaining in the tank.

• Almost all engines brushcutters (with rare exceptions) equipped with a manual starter - with a drum pull-rope and handle.Some models also have a modern system of easy start - FLASH STARTER.Pulling the cable operator does not transmit the rotation directly to crank the engine assembly and cocks the special spring which, in turn, already transmit torque impulse to run.Thus, the operator does not have to overcome the compression jerks, running becomes easier and smoother, requires significantly less physical effort.

• To facilitate the launch on the power unit mowers should be a button "primer".A few clicks on it to provide start-up output of air residues from the fuel pipe and tube supply the required amount of fuel to the carburetor.

gasoline Power drive

Engine power may lie in the range of 700 ÷ 800 to 2500 watts or more.The choice depends on the expected load on the tool.In principle, it is the power and determines the operational classification of gasoline trimmers.

This option is sometimes referred to in horsepower.The ratio is simple - 1 kW = 1.36 "horse", or, on the contrary, 1 horsepower = 0.74 kW.

• models for consumer class is usually enough power up to 1 kW.Trimmers with drive safely cope with the ordinary grass, sedge, small shrub young shoots.
• power "farm" gasoline trimmers typically ranges from 1.5 to 2 kW, which already allows for a more serious work with the use of the knife tips.
• Powerful professional tools, more than 2 kW have a whole range of possibilities, and the use of special sawblades to mow enables not only dense bush, but even file down young trees with a trunk up to a thickness of 20 to 30 mm in diameter.

Naturally, the increase in power is accompanied by an increase in weight of the trimmers and its cost.So you need a very clear understanding of the planned scope of the instrument.

type and design of the bar

Rod placed inside the transmission shaft may differ along two dimensions.

• straight barbell is more typical for the professional or "farmer" model.Shaft that transmits rotation, along its entire length is a rigid rod of high strength alloy.It relies on multiple roller bearings, and is capable of transmitting considerable force to the working head of the tool without risk of damage.

curved bar makes more ergonomic brushcutters - such a tool is much easier to handle difficult areas, such as around trees, flower beds, benches, etc.Also, the operator spends with much less effort to maintain the cutting nozzle at a certain height.