Battery Pack:	One cell (1S) - 3.7 v Tweo cell (2S) - 7.4 v Three cell (3S) - 11.1 v Four cell (4S) - 14.8 v Five cell (5S) - 18.5 v Six cell (6S) - 22.2 v Seven cell (7S) - 25.9 v Eight cell (8S) - 29.6 v Nine cell (9S) - 33.3 v Ten cell (10S) - 37 v Eleven cell (11S) - 40.7 v Twelve cell (12S) - 44.4 v Thirteen cell (13S) - 48.1 v Fourteen cell (14S) - 51.8 v
Main Gear Teeth:
Motor Pinion:	7 Teeth 8 Teeth 9 Teeth 10 Teeth 11 Teeth 12 Teeth 13 Teeth 14 Teeth 15 Teeth 16 Teeth 17 Teeth 18 Teeth 19 Teeth 20 Teeth 21 Teeth 22 Teeth 23 Teeth 24 Teeth 25 Teeth 26 Teeth 27 Teeth 28 Teeth 29 Teeth 30 Teeth
Motor (Kv):
Drag Co-Efficient:	.75 % .76 % .77 % .78 % .79 % .80 % .81 % .82 % .83 % .84 % .85 % .86 % .87 % .88 % .89 % .90 % .91 % .92 % .93 % .94 % .95 % .96 % .97 % .98 % .99 % 1.00 %
Target Head Speed:

              

Battery Pack:	One cell (1S) - 3.7 v Two cell (2S) - 7.4 v Three cell (3S) - 11.1 v Four cell (4S) - 14.8 v Five cell (5S) - 18.5 v Six cell (6S) - 22.2 v Seven cell (7S) - 25.9 v Eight cell (8S) - 29.6 v Nine cell (9S) - 33.3 v Ten cell (10S) - 37 v Eleven cell (11S) - 40.7 v Twelve cell (12S) - 44.4 v Thirteen cell (13S) - 48.1 v Fourteen cell (14S) - 51.8 v
Main Gear Teeth:
Target Head Speed:
Motor Kv:
Drag Co-Efficient:	.75 % .76 % .77 % .78 % .79 % .80 % .81 % .82 % .83 % .84 % .85 % .86 % .87 % .88 % .89 % .90 % .91 % .92 % .93 % .94 % .95 % .96 % .97 % .98 % .99 % 1.00 %
Pinion Gear Teeth:

 

IMPORTANT: Calculators are intended to provide estimates only. Some motor/ESC combinations are more or less efficient. Final headspeed should always be checked with a optical or LCD tachometer. ReadyHeli or Heli Club Westland assumes no liability for the accuracy or inaccuracy of your calculations.

 

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