How to Make a Trimmer Cultivator
By purchasing a gas trimmer, the owners of country houses and summer cottages receive a fairly powerful and autonomous tool for various agricultural work. over, manufacturers often offer various nozzles for them. brush cutters, dead wood choppers, blowers. Today we will talk in detail about the cultivator nozzle for the trimmer.
Design and mounting options
The cultivator nozzle comes in two versions:
- A disc, the cutting organs of which are a pair of cutting discs;
- Toothed, which is a series of mills sequentially located on the shaft.
The fundamental difference lies only in the design of the cultivating unit. Disk nozzles are harder and therefore suitable for processing heavier soils, while toothed ones have a lower dead weight, but are designed for work on lighter soils.
The transmission of torque from the trimmer motor to the cultivator nozzle is carried out using a special shaft, which is arranged in a special rod (it will have to be purchased separately). This node is not interchangeable, and differs in the number of slots on the end of the rod: there can be seven or nine. Therefore, when planning to purchase a cultivator attachment, you need to understand that the Oleo-Mac attachment will not work with the Husqvarna trimmer, nor will it.
The slotted method of attaching discs or milling cutters to the shaft allows free movement of the cutting organs, which is ideal for cultivation, since it allows loosening the soil with a sufficiently wide grip (up to 200. 250 mm per pass), without requiring a large amplitude of movement of the rod. Also removed are the restrictions on the density of beds located on the site. With the extension of the beds, the convenience of working with the nozzle in question increases, since turns will have to be done much less often.
Features of the nozzle
Any cultivator nozzle for a trimmer significantly increases the weight of the entire device assembly (by at least 5. 6 kg). Therefore, long-term work with such an instrument is not for everyone. In the calculation, it is also necessary to introduce mechanical restrictions on the power of the trimmer drive. If the engine is designed for a power of no more than 1500 W, then the cultivator can only be cultivated with regularly loosened soil, or limited to hilling of breasts, potato bushes, etc.
Видео: How to Make a Trimmer Cultivator
Since the drive of gasoline trimmers is located behind the working one, and the drive rod is quite long, vibrations constantly occur during cultivation. Their value is determined by both the length of the rod and the changing load on the disks or mills. These vibrations are transmitted through the shoulder strap to the hands of the user, so it’s not always convenient to control the trimmer’s power button and hold the awning. Therefore, prolonged soil cultivation using a cultivator nozzle is unsafe for health.
But not everything is so bad: the mobility of the gas trimmer makes it easy to cultivate the soil between the rows, and the absence of wheels on the mounted cultivator does not damage the plants on the beds.
The cultivator nozzle “does not like” compacted soil, and when it is first introduced into such soil, the rod is sharply thrown away. Therefore, disk cultivators are equipped with a safety casing (toothed milling cutters are more likely to bend than break, although in this case a low protective shield from the legs would not hurt). The presence of a safety screen affects the visibility of the cultivator.
Is it worth it to do the cultivator nozzle yourself?
The price factor has a significant impact on the choice: whether to purchase such a nozzle, or to make it yourself. High-quality cultivator nozzles for the trimmer can be purchased at a price of 11,000. 20,000 rubles, which justifies itself only with large volumes of work. It is also inappropriate to purchase such a node even in cases when the cultivated soil is heavy (for example, chernozem or loam): the cultivator does not raise the soil, but only moves the clods of earth from one place to another, moreover, together with the roots of the weeds or grass pulled out.
The technology for caring for vegetation will also change: first, with a nozzle-knife, it is worth walking through the beds, cutting grass, and only then use the cultivator nozzle.
Having decided on the independent manufacture of the cultivator attachment to the trimmer, you should first evaluate the following:
- The design of the outlet section of the boom: if it is a flexible shaft, then you will have to forget about the cultivator: it will not be able to withstand constantly changing torques in amplitude. A cardan transmission is more functional, and the most successful design is a multi-spline rod, moreover, direct, and not curved.
- Drive power: if it is less than 1000 watts, the engine will overheat, and cultivation performance will drop sharply.
- Fuel tank volume: energy consumption will increase significantly, since the cultivator nozzle will have to be made from improvised materials. Therefore, the tank must contain at least 1 liter of fuel.
- Handle design. Ergonomic experts believe that the T-handle is the most comfortable, which provides the most accurate and reliable direction. It is difficult to hold a gas trimmer with a cultivator attachment, which is common in some models with a J-shaped handle.
If the existing trimmer meets the above requirements, and its owner has sufficient experience in performing such work, then it is quite possible to make a disk nozzle with your own hands. As for the gear type nozzles, their independent production is very time-consuming, and will not provide the desired quality.