The knowledge you should know when choose RC helicopter
What’s the meaning of the number on the electric brushless of motor? Generally there is no classification with hierarchy brush motor. But there is a distinction classification with brushless motor which base on the Kv values as a unit.
Kv value of the detection voltage is 1V speed achieved as a standard. Brushless motor shell will have a label associated with it, for example, shows “3700rpm/V”, that the motor no-load state to 1V voltage can produce 3700r.pm the cadence. Another example, a recently fully charged nickel-cadmium batteries is 1.3V environment, using 10 batteries (1 3V) drive a 3700rpm / V brushless motors. The use of Kv3700X 1.3X 10 two 48,100 r.pm to get some speed value, but this is the state of the motor under no-load some of the reference values obtained. Under the actual conditions of use of the Kv motor, the battery straight number is different. Different RC toys need different capacities.
Will the electric propellers aircraft must use narrow one? Most electric aircraft using narrow paddle (blade diameter smaller)? The answer is no! Sometimes even use electric engine aircraft with the propeller, aircraft propeller electric choice, and no special requirements. Advertised electric propeller aircraft dedicated mostly thin and light propeller, but also the electric motor and the engine speed back to a different job. So it has to slow under low speed after the great efficiency. It can also play a large propeller, such as GWS E diameter produced EP 1080 on up to 254mm, which can be called a large slow aircraft. Of course, different propeller planes must be in accordance with the features make the selection as well.
Electric aircraft mostly used a slow reduction group. The use of gear gears to the gear motor output into a high speed large torque, so that you can drive large propellers. The thrust increase, so more to enhance flight performance. But that only need a simple to use slow group can take full advantage of efficiency. In fact, this statement is not necessarily entirely correct. It must take into account the characteristics of the aircraft, motors, etc. used to select the type of gear.
However different vendor of motor shell will have a different length, but basically as long as the length of the projection from the exterior. You can know about why the series motor, for example, 58mm is the 600 motor. Also because the same level of motor coil winding their way, the number of turns has different characteristics, such as type of motor torque and speed type motors.
To learn these, you may have deeper recognition of the motor of RC toy. Just enjoy the fun the amazing toys bringing to you.