The Emax GT2820/07 is a 4.9 ounce, 850kv, 570 watt outrunner brushless motor. It's a good choice for sport planes weighing 35 to 65 ounces, and 3D models weighing 30 to 50 ounces. 

We suggest using a 3 cell Lipo battery that is rated for about a 60 amp continuous discharge (or more), such as an 11.1v 2200 30C to 11.1v 4200 50C. Good 4 cell Lipo choices would be 14.8v 2200 50C to 14.8v 3300 50C.

We recommend using a 50A to 70A Electronic Speed Control (ESC) with this motor.

The GT2820/07 comes with 4mm male connectors installed, and female connectors are included for your ESC. 

MOUNTING OPTIONS: The GT2820/07 can be mounted in front of a firewall using the included X mount and rotor end prop adapter. It can also be mounted behind a firewall, using the included 5mm prop adapter to mount a prop on the motor shaft. 

Propeller Test Data for the Emax GT2820/07 Motor:

Battery Size Propeller Size Thrust (oz) Amps  Watts 
3-Cell 11.1v APC 14 x 8.5E 73 oz. 37 amps 405 watts 
3-Cell 11.1v APC 14 x 7E 69 oz.  33 amps362 watts
3-Cell 11.1v APC 13 x 6.5E 62 oz. 27 amps314 watts
3-Cell 11.1v APC 13 x 4E 57 oz. 21 amps241 watts
3-Cell 11.1v APC 12 x 6E 53 oz. 22 amps260 watts
3-Cell 11.1v APC 12 x 4.7SF  62 oz. 28 amps312 watts
3-Cell 11.1v APC 12 x 3.8SF 62 oz.  28 amps316 watts
4-Cell 11.1vAPC 13 x 4E 90 oz. 38 amps560 watts
4-Cell 11.1vAPC 12 x 6E 84 oz  35 amps517 watts
4-Cell 11.1vAPC 11 x 8.5E 72 oz. 36 amps543 watts
4-Cell 11.1vAPC 11 x 7E 72 oz. 31 amps471 watts
4-Cell 11.1vAPC 11 x 5.5E 68 oz.  27 amps416 watts

Please be aware that the battery used can make a tremendous amount of difference in the performance of brushless motors. The above data was obtained using batteries in good condition that were fully charged. Thrust and amp draw may be less with the use of batteries rated at lower amp output, and slightly more using batteries rated for higher amp output. Other factors, such as ESC timing and variations in actual motor KV can affect the performance of brushless motors as well. We recommend the use of a Watt Meter to test the current draw of your particular power system, especially if you plan to use a prop that pushes the motor near it's maximum amp rating

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EMAX - GT2820-07 850kv Brushless Motor

  • Product Code: EMAX - GT2820-07 850kv Brushless Motor
  • Availability: 2 - 3 Days
  • CMC Product ID: 1905
  • R636.00

  • Ex Tax: R553.04

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