Simple Heli
Headspeed Calculator
Fill in all but unknown field then click Compute to calculate the unknown. Formula used:
rpm =
ncell *
vcell *
Kv *
Kmot *
Kpow *
tpinion /
tmain
| Count of battery cells in series | ||
| Voltage per cell | ||
| Motor RPM per VOLT constant | ||
| Motor efficiency (percent) | ||
| Count of teeth on pinion gear | ||
| Count of teeth on main gear | ||
| Main rotor revolutions per minute | ||
| ESC power output (percent) |