Uve Rick's EV Resources - EV Calculator

Uve Rick's EV Calculator
Salvaged from Geocities

Instructions: Fill in the vehicle information, miscellaneous information, electrical components, environmental conditions, and vehicle weight sections. Click the Calculate button that follows. The results will transfer to the sections following.

Vehicle Information

Either use the selector for each field, or enter the correct values directly for each of the fields below. Gear ratio below should be ratio from wheel to engine (motor), including both transmission and differential. WARNING: for listed vehicles, only drag coefficient and curb wieght are valid. You must enter the other values for your vehicle.

Type of Vehicle:

Drag coefficient:
Frontal area (sq. ft.):
Initial curb weight:
Drive efficiency:
Gear ratio (1st):
Gear ratio (2nd):
Gear ratio (3rd):
Gear ratio (4th):
Gear ratio (5th):
Relative wind factor:

Tire size: / R

Revolutions/mile:

Miscellaneous Information

Rolling resistance:
Brake and steering:

Weight removed:
You can enter the battery voltage, or you can enter the number of batteries and click Calculate Voltage.
Total battery voltage: or Number of batteries per string:

Number of battery strings:

Electric Components

Instructions: Either use the selector for each field, or enter the correct values directly for each of the fields below.

Motor:
If your motor is not listed above, the values below for a, b, c, d, k, and n can determined from the motor page if you have a set of curves for the motor.

Voltage
Weight
Horsepower
Maximum RPM
Motor a
Motor b
Motor c
Motor d
Motor k
Motor n

Battery:
If your battery is not listed above, the values for Puekert's capacity and Pukert's exponent can be determined from the battery page.

Voltage
Weight
Puekert's exponent
Puekert's capacity
Maximum current
Internal resistance

Controller:

Min voltage
Max voltage
Max current
Weight:
Efficiency:

Charger:

Min voltage
Max voltage
Max current
Weight

Environmental Conditions

Percent incline:%
Wind:

Vehicle Weight

Instructions: The only field below you can change is the Misc weight. The web page will calculate all other fields. Enter that value, then click the calculate button.

Number of batteries
Battery weight
Charger weight
Controller weight
Motor weight
Misc weight
Weight added
Total vehicle weight