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Find Motor Constants
Use this form to determine the motor constants
of your motor and also build a graph of your motor's performance. The data below
that you enter is data you have either measured or already have on the motor. To
measure the data, you will typically need a watt meter and an RPM meter. The motor
name that you enter will appear on the top of the graph. The
Io, or no load current, that you enter is the current consumed by the
motor while running at about your planned voltage and
without a prop attached to the motor. The V1, I1 and RPM1
figures represent the voltage, current and RPM of a particular propellor, and the
V2, I2 and RPM2 figure represent the voltage, current and RPM of
another propellor. The propellors you use aren't critical and it's usually surprising
to realize you don't need to specify the diameter and pitch of the prop. Instead,
we're merely using the propellors as loads for the motor. Finally, the motor
weight is needed to estimate the short term power consumption of the
motor.
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