# Motor Chart

The 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).
Model HPWeightDiameterlengthknabcd
Kostov 30173 10.7"17.9".01671.4624414.8.071-14737144
GE 5BT1346B50 ?? 10".00761.5021592.4.206-6299.34108

# Motor Graphs

The Links below are for a comma seperated table for amps vs. torque, and RPM vs. Torque vs. Voltage. These tables can be loaded into any spreadsheet program which excepts a comma seperated tables.

# Motor Drawings

The Links below are for Motor physical specifications. They are either in HTML format or PDF format.

# Motor Amps vs. Torque

This form calculates k and n for the equation:
torque = k * current^n

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).
t1:a1: a1 calc:
t2:a2: a2 calc:
t3:a3: a3 calc:
t4:a4: a4 calc:
t5:a5: a5 calc:
t6:a6: a6 calc:
t7:a7: a7 calc:
t8:a8: a8 calc:
t9:a9: a9 calc:
t10:a10: a10 calc:
t11:a11: a11 calc:
t12:a12: a12 calc:
t13:a13: a13 calc:
t14:a14: a14 calc:
t15:a15: a15 calc:
t16:a16: a16 calc:
k:
n:

Difference:
Difference(abs):

# Motor RPM vs. Torque vs. Voltage

This form solves the equation:
voltage = (rpm * d)/((a /(torque^b)) + c).

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.
voltage:
torque: rpm: calculated RPM:
torque: rpm: calculated RPM:
torque: rpm: calculated RPM:
torque: rpm: calculated RPM:
torque: rpm: calculated RPM:
torque: rpm: calculated RPM:
torque: rpm: calculated RPM:
torque: rpm: calculated RPM:
torque: rpm: calculated RPM:
torque: rpm: calculated RPM:
torque: rpm: calculated RPM:
torque: rpm: calculated RPM:
torque: rpm: calculated RPM:
torque: rpm: calculated RPM:
torque: rpm: calculated RPM:
torque: rpm: calculated RPM:

voltage = (rpm * ) /(( / (torque ^ )) + )

I you have any information to fill in my chart or have other motor you want to add to the chart, please email me at Uve.Rick@usa.net. Please provide the following information: HP, Weight, Amp vs. Torque graph, and Amp vs. RPM vs. Torque graph. Equations would be really nice, I can't guarentee when I will come up with the equations. I'll put these equations in the ev calculator as soon as possible.
Acknowlegements:
I would like to thank Gray Flo at innEVations for supplying the motor curves for the kostov, XP-1227 and XP-1263 motors.

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