Working depth
The maximum processing depth provided by the unit. In cultivators with non-replaceable cutters, this parameter is determined primarily by the cutter diameter, in walk-behind tractors designed for active cutters (see below) - by design features (in such models, even high power does not guarantee a large working depth). The most limited indicator in modern walk-behind tractors is
up to 20 cm, and a value
from 21 to 25 cm can be called small. However, often even such capabilities are quite sufficient. A depth of
26 to 30 cm already provides quite extensive capabilities, and the most advanced models are capable of "biting into the ground"
more than 30 cm.
In any case, the optimal processing depth depends on the type and condition of the soil, as well as the crops for which the soil is being prepared; detailed recommendations on this matter can be found in specialized sources. So it does not always make sense to look for a model with maximum depth - especially since such capabilities require high power. It should also be noted that in many units the depth can be adjusted.
Engine size
The working volume of the gasoline or diesel engine of the cultivator / two-wheel tractor. For an internal combustion engine of the same type (see "Type of internal combustion engine"), power and fuel consumption usually directly depend on the volume. Also, the classification of a two-wheel tractor as a vehicle according to the traffic rules of a particular country may depend on the engine volume; you should pay attention to this if you plan to use the unit as a tractor and drive on roads.
Motor power
Horsepower of two-wheel tractor/cultivator motor. The basic unit of power nowadays is watt, however for petrol and diesel engines (see "Motor type") the more traditional designation in horsepower is often used. 1 hp is approximately equal to 735 watts.
More powerful motor allows achieving higher productivity, width and depth of processing. On the other hand, high power significantly affects the price, weight and dimensions of the unit, as well as the consumption of electricity/fuel. In light of this, the engine characteristics are selected by the manufacturer taking into account what "weight category" the walk-behind tractor belongs to. The most limited modern units have a power of
up to 2 hp, in the heaviest and most advanced this figure can
exceed 13 hp ;
4 - 7 hp can be called an average indicator, and
2 - 4 hp and
7 - 13 hp are below and above average, respectively.
Detailed recommendations on the optimal power for a given situation can be found in specialized sources.
Motor power
The power of the two-wheel tractor/cultivator engine in watts. This designation is usually used for electric engines, but can also be used for petrol/diesel engines, along with horsepower (for more information, see the "Motor power" section above).
More powerful motor allows achieving higher productivity, width and depth of processing. On the other hand, high power significantly affects the price, weight and dimensions of the unit, as well as the consumption of electricity / fuel. In light of this, the engine power is selected by the manufacturer taking into account what "weight category" the walk-behind tractor belongs to, what characteristics it should show. So, the lightest models have a power
of up to 1.5 kW, this is the device that is best suited for a small area of 6 - 8 acres. Walk-behind tractors
up to 3 kW can cope with 10 - 15 acres, a power of
3.5 - 5 kW is suitable for a plot of 50 acres to a couple of hectares. Units
for 5 - 10 kW are already classified as professional level, they can "tame" spaces of 7 - 10 hectares; and the heaviest and most powerful modern walk-behind tractors have a power
of more than 10 kW.
Fuel consumption
The average amount of fuel consumed by the gasoline or diesel engine (see "Engine type") of the cultivator/two-wheel tractor per hour of operation. This value is rather conditional, because depending on the mode of operation, fuel consumption may vary in one direction or another; however, in general, it provides an estimate of the approximate amount of fuel required for a given operating time.
Fuel tank volume
The volume of the fuel tank of the cultivator / two-wheel tractor; knowing this parameter and fuel consumption (see above), it is possible to determine the maximum operating time of the unit on a single refill. If you plan to use the device in large areas or to work for a long time, it makes sense to look for a model with a large tank — it will not have to be filled often. On the other hand, for short-term work in small areas, a large tank is not required — in this case, it only increases the weight and dimensions of the unit.
