The Kv rating of a brushless motor is the ratio of the motor's unloaded rpm to the peak voltage on the wires connected to the coils. Knowing the Kv rating of a motor will help you determine how fast that motor will rotate when a given voltage is applied to it. For example, a 980Kv motor powered by an 11.1V battery would spin at 10,878 rpm ...

Aug 16, 2017 · Brushless Motor KV To RPM. How to calculate motor RPM? First you should know how many factors impact the value of RPM? In theory, in order to get RPM value just need to know only 2 factors, there are KV value and battery voltage. RPM = Motor KV Racing * Battery Voltage

This is the same effect as a propeller cutting through the air. In the figure, the two arrow lines show the position of the propeller tips. You can see that the high pitch propeller covers the same distance travelled with only half the rotation of the propeller. With both motors/propellers spinning at the same RPM, the higher pitch propeller will travel further in the same amount of time.

It takes several minutes for the motor RPM and current to settle after an increase in drive voltage. This is consistent with the very low torque constant (Kt). Kv = 4980 RPM/Volt R 2 =0.9777 (over 10,000 RPM at 3 volts) Kv = 83 Rev/Sec Volt = 521 Radians/Sec Volt. Ke = 1/Kv = 0.001918 (Volt seconds)/Radian.

RCPRESS Kv Rpm Calculator. The KV value is the speed the motor needs to turn in order to offer 1V of counter-electromotice force. A real world motor is not always 100% efficient though. Given the wide range of possible battery configurations, you want to choose a motor with a KV rating that can optimize the performance of your RC model.

To calculate your fan rpm's. Take the voltage of the battery and multiply the KV of the motor = Fan RPM 11.1v X 3600= 39,960 rpm. To calculate what KV motor you need. Take the desired fan RPM divide it by the battery voltage = Needed Motor KV 45,000/ 14.8v=3040kv motor.

kW to kVA (kilo-Watt → kilo-Volt-Amperes) How to easily convert in 1 step from kW to kVA, besides showing the formula to be used in the conversion, with some illustrative examples, a table with the main conversions , equivalence and more.

To calculate viscosity index we need viscosity of an oil both at 40°C and 100°C. In the first row table 1, Enter kinematic viscosity (KV) at 40°C, In the same way enter kinematic viscosity @100°C in the second row. Click Calculate button to get viscosity index (VI).

The motor current calculator calculates the full load current of an AC induction motor. Motor current: 26.5 A. Notes: The motor full load current calculator calculates the motor full load current from the following parameters: Voltage (V). The phase-to-phase voltage for a 3-phase supply, or the phase-to-neutral voltage for a single phase supply.