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Manufacturing and Marketing R/C helicopters since 1987

Optimal RPM Setup for Electric Conversion
(Determine Motor & Battery)

The tables below will help determine what electric motor and/or battery to use with the Electric Conversion Kit ( CN1000EC ) when used on Century R/C Helicopters with stock gears.

 

* NOTE: All calculations based on theoretical voltage of 3.7 volts per cell. Desired optimal headspeed for 2-bladed setup is between 1650-1800 RPM. Desired setup for multi-bladed setup is between 1550-1750 RPM.

R/C helicopters using 55 tooth counter gear and 14 tooth pinion:

(e.g. Hawk Pro, Century .50 2-blade Scale Mechanics, Century .50 2-blade scale helicopters, Falcon SE V3, Falcon SE V2, All Raven 50)

Drive Style Motor Battery Cells* Output Headspeed
Clutch

1470kV

(e.g. Outrunner 550+ 1470kV)		 4 2032

1300kV

(e.g. Outrunner 550+ 1300kV)		 4 1797

1100kV

 5 1901

800kV

 6 1659

565kV

 8 1562
Direct Pinion

1470kV

(e.g. Outrunner 550+ 1470kV)		 5 1864

1300kV

(e.g. Outrunner 550+ 1300kV)		 5 1649

1100kV

 6 1674

800kV

 8 1623

R/C helicopters using 53 tooth counter gear and 14 tooth pinion:

(e.g. 50 NX)

Drive Style Motor Battery Cells* Output Headspeed
Clutch

1300kV

(e.g. Outrunner 550+ 1300kV)		 4 1858

1100kV

 5 1966

800kV

 6 1715

565kV

 8 1615
Direct Pinion

1300kV

(e.g. Outrunner 550+ 1300kV)		 5 1704

1470kV

(e.g. Outrunner 550+ 1470kV)		 5 1926

1100kV

 6 1730

800kV

 8 1677

R/C helicopters using 55 tooth counter gear and 13 tooth pinion:

(e.g. Century .30 Scale Mechanics and Century .30 scale helicopters)

Drive Style Motor Battery Cells* Output Headspeed
Clutch

1300kV

(e.g. Outrunner 550+ 1300kV)		 4 1669

1470kV

(e.g. Outrunner 550+ 1470kV)		 4 1887

1100kV

 5 1765

800kV

 6 1540

565kV

 10 1813
Direct Pinion

1470kV

(e.g. Outrunner 550+ 1470kV)		 5 1725