Cobra 11 Logo

Your Cobra 11 Amp Brushless ESC w/2Amp Linear BEC Source!

Feeling grounded? We're still flying at Radical RC! 
2130 Harshman Rd. Dayton,  OH  45424 
Shop Hours: M-F  10AM-7PM; SAT 10AM-5PM; SUN 12-5PM
Office Hours: M-F 9AM-5PM; Orders Ship: M-F
Technical Help:


1905 Wright Flyer 68"

Dummy R-985 Radial 
 Flite Test visits Radical RC 
         Cobra 11 shipping options    

 Home2024 DAYTON MODELRAMA  | View Shopping Cart 


Cobra 11 Amp Brushless ESC w/2Amp Linear BEC

Cobra 11 Amp Brushless ESC w/2Amp Linear BEC

Cobra Speed Controllers are designed with a relentless pursuit of exceptional product quality. These speed controllers are the perfect complement to a Cobra Brushless motor, and they will also work with virtually any other brushless motor on the market as well. Cobra Speed Controllers are built from the best components available to provide the user with long life and trouble-free operation.

Cobra Speed Controllers are simple to program, and in most cases, they can be used right out of the package. Three of the Speed Controller parameters can be set without a programming card: Brake Mode, Battery Type, and Timing mode. The remaining parameters can be set with the optional ESC Programming Card, which is available separately.

All of the Cobra Speed Controllers come with an internal BEC circuit to power your radio receiver and servos. The 11A and 22A models come with a 5.0 volt linear BEC rated for 2 amps of current.

Since the Cobra 11A ESC is typically used in smaller 2-cell powered indoor aircraft, where most users solder the motor directly to the ESC to save weight, no bullet connectors are provided on the motor output leads. The leads are provided pre-tinned ready to solder.

Note: The Cobra speed controllers do NOT ship with the programming card. This part must be purchased separately. The same programming card is used for the entire series of Cobra speed controllers so only one programming card is needed for all of your Cobra speed controllers.

Cobra Speed Controller Features

  • Easy Set-up and Operation
  • Basic Programming available through Throttle Stick
  • Throttle Range automatically detected and set for smooth, linear throttle response
  • Three different types of Low Voltage Cut-off available for Li-Po, Ni-XX or LiFe batteries
  • Three different LVC levels for each cell type: 3.2, 3.0 or 2.8 Volts/cell for Li-Po batteries, 0.9, 0.8 or 0.6 Volts/cell for Ni-XX batteries and 2.8, 2.5 or 2.2 Volts/cell for LiFe batteries
  • LVC type can be set to Hard Cut-off or Power Reduction Mode
  • Three different brake levels, Hard, Medium or Off
  • Three different timing modes, High, Low and Auto
  • Three different Motor Acceleration Rates, High, Medium and Low ? Safe Start-Up: The ESC will not arm until the throttle is in the idle position
  • Locked-Rotor Protection: If the motor is blocked so the prop cannot rotate, the ESC will automatically shut down to prevent damage
  • PWM Frequency is set to 8KHz for best operation on a wide range of motors
  • Over Temp Protection: Shuts down the ESC output if temperature exceeds 230F (110C)
  • Auto Power Cut-off: If the throttle signal is lost for more than 3 seconds, the throttle will reduce to idle to prevent fly-aways.


Cobra 11 Amp ESC Specifications

Weight (Without Connectors): 9.9 grams (0.35 oz)

Max Continuous Current: 11 Amps

Burst Current rating (15s) 14 Amps

Operating Voltage Range 6 to 12 Volts

Number of Li-Po cells 2 to 3 cells

Number of Ni-XX cells 6 to 10 cells

Number of Li-Fe cells 2 to 3 cells

Linear BEC Output 2 amps @ 5.0 Volts

ESC Size (Inc. Caps, in mm) 30 x 18 x 10

ESC Size (Inc. Caps, in inches) 1.18 x 0.71 x 0.39


SKU Number: C-11A-ESC
Price: $17.99 
Battery Input Connector 



buy Cobra 11 using VISA MC Discover


Radical RC SiteMap  


Questions on this Cobra 11? Email us at 

Or call us at Phone: 937-236-2455