Comparison VolantexRC Vector SR65 vs Fei Lun FT009

The name of the engine installed on the boat. Usually, knowing this name, you can easily find information about the features of the engine — both official manufacturer data and reviews from users — and determine how much you are satisfied with its characteristics. This can be very important when choosing a professional grade model.

In addition to the name, this paragraph may also specify the type of electric motor (see "Motor") — collector or brushless.

The collector design can be called classical. It allows you to create fairly light, compact, inexpensive motors, which are also easily repaired. The disadvantages of this option are relatively low efficiency, a tendency to spark (especially when overheated), as well as less durability than brushless units. In addition, with a collector motor, it is more difficult to ensure high speed. As a result, this option is typical for relatively inexpensive and slow models.

Brushless motors are considered more advanced than brushed motors: they are more powerful, more economical, more durable, better protected from pollution and are well suited for overclocking to high speeds. On the other hand, such engines are much more expensive, and the complexity of the design does not allow you to repair the motor on your own. In light of all this, brushless motors are predominantly used in advanced high speed craft; the presence of such a motor is an indicator of a rather high class model.

Radio-cont...rolled models can be produced in two versions, differing only in the type of electric motor.

The highest speed the boat can reach. For ARR models (see Package Contents) it is usually specified if the recommended battery is used; when you install a battery with a lower voltage, the speed also decreases.

Note that the maximum speed is traditionally given for perfect conditions: good weather, no waves, a full battery charge, etc. Therefore, in fact, it may well be lower than stated. Nevertheless, this figure describes the vessel's capabilities quite well. When choosing by speed, it is worth remembering that the faster the model, the more expensive and demanding it is to control skills, and the more free space you will need for its safe use. Therefore, it makes sense to specifically chase high speed values except for sports use.

The capacity of the battery supplied with the boat.

Large capacity, with the same power consumption, allows the model to work longer without recharging. However, power consumption and, accordingly, the actual time of operation on a charge depends on many factors — motor power, mode of use of the model, etc. Therefore, in general, the battery capacity is a purely reference parameter, and it is worth evaluating the battery life of the model not by this indicator, but by the operating time indicated in the characteristics (see below).

Note that many models allow the possibility of replacing batteries with more capacious ones, which accordingly increases the operating time on a charge.

Rated voltage of the battery supplied with the boat.

The voltage is selected by the manufacturer in such a way as to provide the required performance. Therefore, in general, it is a secondary parameter; you usually have to pay attention to voltage only when looking for a replacement battery or charger.

Note that in modern radio-controlled equipment, including boats, batteries with a standard voltage of 3.7 V, 7.2 V and 11.1 V have become widespread. volt battery instead of 3.7 volt battery for more power and speed.

Model of the battery supplied with the boat. This data allows you to find detailed information about the battery and evaluate its characteristics; they also come in handy when looking for a spare or replacement battery.

Operating time of the boat on one charge of the complete battery. This indicator is rather conditional, because. usually it is indicated for a certain average mode of operation, as they say, "without extreme"; the time of continuous movement at full speed can be noticeably less. Nevertheless, it fully allows you to evaluate the battery life of the boat.

Note that for models powered by AA and AAA cells (see "Battery type"), the operating time is not indicated: such cells may have different capacities, and, accordingly, the battery life of the model in each case will also be different.

The maximum distance from the remote control to the model at which normal controllability is maintained.

The range is traditionally indicated for perfect conditions — in the absence of interference on the air and obstacles in the path of the signal; in reality, it is usually somewhat lower, especially since the transmitter power may drop somewhat as the battery is discharged. This should be taken into account when choosing for this indicator. On the other hand, it doesn’t always make sense to chase after the maximum “range”, you need to take into account the specific situation: for example, for a 10-metre pond, even a remote control with a modest range of 30-40 m by modern standards will be quite enough.

The type and quantity of batteries required for the remote control to operate.

- AA. Classic “pen-type” batteries, sold almost everywhere and thanks to this, are very popular in radio control equipment. Depending on the power and functionality of the transmitter, you may need from 2 to 8 such batteries.

- AAA. "Pinky" or "mini-finger" batteries, which look like a smaller version of AA cells. Due to their small size, they have a smaller capacity, and therefore are used less often, mainly in inexpensive models with short-range remote controls.

- 6F22. 9-volt rectangular batteries with a pair of contacts at the end, colloquially called “6LR61”. They are used relatively rarely.

- Battery. Built-in battery, charged directly in the remote control. Convenient in terms of charging, but unlike batteries, it cannot be quickly replaced with a charged one for additional operating time.

The presence of double water protection in the design of the boat.

By itself, all radio-controlled ships have water protection — by definition; usually, it is provided by a sealed enclosure. However, some models provide additional protection for sensitive components, primarily electronics — for example, in the form of a cover under the case, or even a separate closed compartment. This increases the overall reliability of the design: if the first layer of water protection is damaged (for example, in the event of an accident), water will still not get on critical parts, and instead of replacing the electronics (or buying a new model), it is likely that it will be possible to get by with repairing the case.