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parameter value Unit comments
Drive Calculator
transmition / use of energy under consideration of air drag and friction
Parameters      
tyre diameter mm tyre diameter (e.g. Trampa stickies 83x52mm)
motor pulley teeth's teeth on motor side
slave wheel teeth's teeth on wheel side
motor value
Motor KV
max cells
max current
power at max cells (S)
battery chosen
Type
KV
Cells
A
W
W
Motor selection
       
battery choise calculator
Serial cells
Parallel cells
nominal voltage
charge cut-off voltage
discharge cut-off voltage
max current
capacity of battery pack
energie of battery pack
Manufactur
Serial Cells
(S)
Palrallel cells (P)
V
V
V
A(Peak)
Ah
Wh
type of battery, cell count, maximum voltage, peak current
drive power % throttle
adversities      
weight setup kg weight of rider + board
pp hill climb % ascent in %
Baldwin Street = 35% (world's steepest street!)
Results      
speed Km/h speed calculated
power W power usage from battery
current A current limited by Imax
drive duration minute ride time
distance Km ride distance
       
additinal energy
for acceleration
seconds
W
A
acceleration duration to reach Vmax
additional power needed for acceleration
additional current at acceleration phase
ADVANCED ⇓⇓⇓ ⇓⇓⇓⇓⇓⇓⇓⇓⇓⇓⇓⇓⇓⇓⇓⇓⇓⇓⇓⇓⇓⇓⇓⇓⇓⇓⇓  ⇓⇓⇓⇓⇓⇓⇓⇓⇓⇓⇓⇓⇓⇓⇓ ⇓⇓⇓⇓⇓⇓⇓⇓⇓⇓⇓⇓⇓⇓⇓⇓⇓⇓⇓⇓⇓⇓⇓⇓⇓⇓⇓⇓⇓⇓⇓⇓⇓⇓⇓⇓⇓⇓⇓⇓
Imax A maximum current limited by: battery, balancer, ESC limit, motor limits
Ibase A current used for electronics
n
coeficient of performance
% coefficient of performance including motor, electrical system and mechanical losses
air resistance      
p kg/m3 air density at 20°C
cw   air resistance of a human at 45° angle towards direction of travel
surface surface of a human
       
frictional resistance      
cr  
frictional resistance (wheel on concrete 0.01) use higher value for other surfaces like sand (0.5) etc.
       
Calculation     F means force;
F flow resistance N resistance air
F sloping N F climbing
F roll resitance N force wheels
F overall N summ of all forces
P W motor power needed
       
RPM Motor RPM RPM motor
RPM wheel RPM RPM wheel
gear ratio 1:x gear ratio
torque Nm torque motor
torque Nm torque wheel
       
losses and voltage sag
losses motor
losses battery
voltage sag battery
W
W
V