Cobra CM-2204/28 Multirotor Motor, Kv=2300

Cobra CM-2204/28 Brushless Multirotor Motor

In Stock
$18.49

Description

The Cobra CM-2204 series motors have a 3.0mm motor shaft for extra strength, as well as oversize ball bearings to support the shaft and provide a long life. The stators are made with 0.20mm laminations for maximum efficiency and minimum Eddy Current losses. Since these motors are typically soldered directly to the speed controller to save weight, the 2204 motors come without bullet connectors and feature extended pre-tinned motor leads that are 4-1/2 inches (110mm) long. These motors also have 3mm threaded holes in a 16x19mm pattern on the back plate for easy installation on your model.

The newest version of the CM-2204 series motors feature an integrated 5mm threaded motor shaft which eliminates the chance of having a prop adapter spin off in flight. The included prop washer and nylon insert prop nut provides a solid attachment for your propellers that will not loosen up and slip during use.

Included with every Cobra CM-2204 Series Motor is a complete accessory package which contains the following items:

● Four M3x5mm Motor Mount Screws
● Four M3 Flat Washers
● Machined Aluminum Prop Washer
● Locking Prop Nut with Nylon Insert


Click here for the Cobra CM-2204/28 Propeller Data Chart


Cobra CM-2204/28 Motor Specifications
 Stator Diameter 22.0 mm (0.866 in)
 Stator Thickness 4.0 mm (0.157 in)
 Number of Stator Slots 12
 Number of Magnet Poles 14
 Motor Wind 28 Turn Delta
 Motor Kv Value 2300 RPM per Volt
 No Load Current (Io) 0.66 Amps @ 8 Volts
 Motor Resistance (Rm) per Phase 0.126 Ohms
 Motor Resistance (Rm) Phase to Phase 0.084 Ohms
 Maximum Continuous Current 17 Amps
 Max Continuous Power (2-cell Li-Po) 125 Watts
 Max Continuous Power (3-cell Li-Po) 190 Watts
 Motor Weight 24.6 grams (0.87 oz.)
 Outside Diameter 27.0 mm (1.063 in.)
 Motor Shaft Diameter 3.00 mm (0.118 in.)
 Prop Shaft Diameter 5.00 mm (0.197 in.)
 Motor Body Length 14.2 mm (0.559 in.)
 Overall Shaft Length 32.5 mm (1.146 in.)
 Motor Timing 5-10 degrees
 PWM Frequency 8 KHz



Motor Performance Graphs

The following downloadable PDF files show the performance data curves of the Cobra CM-2204/28 motor, over its entire throttle range, with a variety of propellers. These graphs can be downloaded and printed to use as a reference for calculating power requirements at specific thrust levels, and enable the user to calculate flight times, current draw and other motor parameters.

Cobra CM-2204/28 Performance Data with APC 5.5x4.5 prop on 3S Li-Po

Cobra CM-2204/28 Performance Data with FC 5x4.5 prop on 3S Li-Po

Cobra CM-2204/28 Performance Data with GemFan 5x3 prop on 3S Li-Po



Performance Graph Instructions

This downloadable PDF file shows the step by step process to use for interpreting the data shown in the Motor Performance Graphs. By following this procedure, you can determine how to select a proper motor for a Multirotor aircraft, as well as calculate required power levels, determine overall prop efficiency and calculate expected flight times based on the battery size that is used. This document can be printed out and saved as a valuable reference tool to keep in your workshop for future use as well.

Motor Performance Graph Instructions



Front View



Items Included in Hardware Package

NOTE: Cross Mounts are NOT included with any multirotor motors.


Cobra Motor Packaging



*Please observe the motor specifications properly. This will determine the correct size ESC required for proper operation*

*Motors do not come with replacement parts!

*Motors that have failed\burned running on an incorrect ESC size will void warranty*


For more information about this product and the rest of the Cobra Motors product line, please check out the Cobra Brushless Motors web site.

Product Questions

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Do these come CW & CCW rotation? I know I can reverse the motor, I'm just wondering about the threaded prop shafts.
2
Does this motor support 4s Lipos? I see all the docs talking only about 3s, but many ppl use these on 4s, like I want to.
-6

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Customer Reviews

  1. Awesome Motors and Service

    by Aric on Jul 7, 2014

    These are the best motors I have tried for mini multirotors, loads of power and balanced perfect. They make my quad fly so smooth and quiet. I really can't say enough; having a USA Company that you can call is awesome too the are so helpful. I tried their first version which worked great, but they have stepped it up on the new version with the shaft adapter built into the bell makes them a little lighter and spin up quicker than any of the other motors I have tried. I tested them with a 3s battery and 5030 carbon fiber props getting about 400g of thrust, this is a poor tester just a scale with the prop turned backwards, so may be more or less, but pretty good for these little motors.
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