Uve Rick's Motor Page Salvaged from Geocities 
Motor ChartThe equation for current vs. torque is: Torque = k * i^n.The equation for voltage vs. torque vs RPM is: V = (d * rpm)/((a/(torque ^ b)) + c).
Motor GraphsThe link below is for a commaseparated table for amps vs. torque, and RPM vs. Torque vs. Voltage. This table can be loaded into any spreadsheet program which accepts commaseparated tables.
Motor Amps vs. TorqueThis form calculates k and n for the equation:
Enter values for torque and current from the motor graph and then click on the calculate button. Have patience, it takes a while (up to 5 minutes).
Motor RPM vs. Torque vs. VoltageThis form solves the equation:
Enter values for the voltage curve you are calculating (use the highest voltage cureve you have). Then enter values for torque and RPM. You must specify a torque and RPM for each value. Have patience, this takes a long time.
Thanks to Gray Flo at InnEVations for supplying the motor curves for the Kostov, XP1227, and XP1263 motors.
