Drive Electric: Three Wheeled Electric Car

Drive Electric
Developing efficient, personal transportation for the 21^stCentury

At Drive Electric we are committed to developing an efficient, two passenger, electric car. A personal transportation vehicle that is an innovative combination of the best of today's technology; sleek, aerodynamic styling; and conventional, lead-acid, traction batteries.

Uve's Electric Vehicle Calculator

Vehicle Information

Instructions: Either use the selector for each field, or enter the correct values directly for each of the fields below. Gear ratios below should be ratio from wheel to engine, including both transmition and differential. For listed vehicles, only drag coefficient and curb wieght are valid

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:

Misc Information

rolling resistance:
brake and steering:

Weight removed:
You can enter the battery voltage or you can enter the number of batteries and click on "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 you 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 you battery is not listed above, the values for Puekert's capacity and Pukert's exponent can be determined from the battery page.

Voltage
Weight
Puekerts exponent
Puekerts 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. Then click on the calculate button.

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

Drag Calculations

Rolling force (lbs)
Incline Force
Tire Torque multiplier
Total Battery Resistance

speed	10	20	30	40	50	60	70	80	90
Still Air Drag(lbs)
Relative Wind Factor
Relative Wind Drag (lbs)
Total Drag Force (lbs)
Drag torque(ft-lbs)
Required HP

Top Speed

1st gear		Limitation:
2nd gear		Limitation:
3th gear		Limitation:
4th gear		Limitation:
5th gear		Limitation:

Results 1st gear Instructions: Click on the calculate button.

speed	10	20	30	40	50	60	70	80	90
Motor Torque(ft-lb)
Motor Rpm
motor amps
motor volts
Battery volts
Battery amps
Range (miles)

Results 2nd gear Instructions: Click on the calculate button.

speed	10	20	30	40	50	60	70	80	90
Motor Torque(ft-lb)
Motor Rpm
motor amps
motor volts
Battery volts
Battery amps
Range (miles)

Results 3rd gear Instructions: Click on the calculate button.

speed	10	20	30	40	50	60	70	80	90
Motor Torque(ft-lb)
Motor Rpm
motor amps
motor volts
Battery volts
Battery amps
Range (miles)

Results 4th gear Instructions: Click on the calculate button.

speed	10	20	30	40	50	60	70	80	90
Motor Torque(ft-lb)
Motor Rpm
motor amps
motor volts
Battery volts
Battery amps
Range (miles)

Results 5th gear Instructions: Click on the calculate button.

speed	10	20	30	40	50	60	70	80	90
Motor Torque(ft-lb)
Motor Rpm
motor amps
motor volts
Battery volts
Battery amps
Range (miles)

click here

Uve Rick