Rc Helicopter Humming Bird Almost Ready To Fly Kit

CENTURY HUMMINGBIRD R/C HELICOPTER

The motor change effected some improvement, but only extended the duration to 3-4 minutes, so the next step was to change the gearing. The pinion puller was again pressed into service and the 10 tooth pinion swapped for a 12 tooth.

INCLUDES

HELICOPTER KIT

BLADES

MOTORS

ESC

RADIO&RECEIVER

EXTRA

BATTERY& CHARGER

LI-ION BATTERY 2S

The fundamental cause of the difficulty is the lower voltage of the 2-cell Lithium pack compared to the recommended 7-cell NiMh one.