Emax CF2805 2800kv Outrunner Brushless Motor
The Emax CF2805 2800kv is a 0.9 ounce, 300 class outrunner motor that works well on small pusher jets, flying wings and a wide variety of small foam models.
The Emax CF2805 2800kv will produce up to 15 ounces of thrust using a GWS 7035 prop, or you can get very high speed using an APC 6x5.5E prop.
Good battery choices for this motor include 7.4v 800 30C to 7.4v 1300 30C Lipo batteries.
We recommend using an 18A to 22A ESC with this motor.
MOUNTING OPTIONS: This motor includes a firewall mount, stick mount and prop saver. Connectors are not installed on the motor wires, but both 2.0mm and 3.5mm connectors are available for sale separately. Always check the tightness of all motor set screws and motor mount screws when installing motors. The set screws require a 1.5mm Allen wrench.
Propeller Test Data for the Emax CF2805 2800kv:
|Battery Size||Propeller Size||Thrust (oz.)||Amps|
|2-Cell 7.4v||GWS 7035||15 oz.||13 amps|
|2-Cell 7.4v||EMP 6 x 3E||13 oz.||12 amps|
|2-Cell 7.4v||APC 6 x 4E||12 oz.||13 amps|
|2-Cell 7.4v||APC 6 x 5.5E||10 oz.||15 amps|
|2-Cell 7.4v||APC 5.5 x 4.5E||10 oz.||13 amps|
|2-Cell 7.4v||APC 5.25 x 4.75E||9 oz.||13 amps|
|2-Cell 7.4v||GWS 5030||10 oz.||8 amps|
The above data is a result of our own testing using fully charged Lipo batteries.
Emax CF2805 2800kv Specifications:
Weight (motor only) = 0.9 ounces (25 grams)
Diameter = 1.1 inch (28mm)
Total Length = 1.5 inch (38mm)
Shaft Length = 0.4 inch (10mm)
Shaft Diameter = 3mm
Replacement Shaft = 3mm x 47mm
Voltage = 7 to 13
KV = 2800
Current = 18 amp maximum for 30 seconds