Cobra CM-2217/26 Multirotor Motor, Kv=695
Cobra CM-2217/26 Multirotor Motor, Kv=695
Cobra Brushless Multirotor Motors offer performance and value for Your RC Models. They are built from high quality components, and are designed to give years of top-level performance. All Cobra Motors are shipped in a custom designed package that features protective foam on all sides, with separate compartments to protect the motor and accessory pack.

The Cobra CM-2217 series motors have a 3.17mm 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 for reliability, and often need to be cut to length for the specific installation, the CM-2217 motors come without bullet connectors and feature extended pre-tinned motor leads that are 17 inches (430mm) long. These motors also have 3mm threaded holes in a 16x19mm pattern on the back plate for easy installation on your model.

The CM-2217 series motors include a bolt-on style prop adapter has an M5x0.8mm thread for holding traditional multirotor props that have a 5mm center hole. 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-2217 Series Motor is a complete accessory package which contains the following items:

● Four M3x6mm Flat Head Motor Mount Screws
● Three M2x6mm Socket Head Prop Adapter Mounting Screws
● Machined Aluminum Bolt-on Style Prop Adapter
● Machined Aluminum Prop Washer
● Locking Prop Nut with Nylon Insert
● Machined Aluminum Cross Mount

Click here for the Cobra CM-2217/26 Propeller Data Chart

Cobra CM-2217/26 Motor Specifications
 Stator Diameter 22.0 mm (0.866 in)
 Stator Thickness 17.0 mm (0.669 in)
 Number of Stator Slots 12
 Number of Magnet Poles 14
 Motor Wind 26 Turn Delta
 Motor Kv Value 695 RPM per Volt
 No Load Current (Io) 0.36 Amps @ 12 Volts
 Motor Resistance (Rm) per Phase 0.269 Ohms
 Motor Resistance (Rm) Phase to Phase 0.179 Ohms
 Maximum Continuous Current 16 Amps
 Max Continuous Power (3-cell Li-Po) 175 Watts
 Max Continuous Power (4-cell Li-Po) 235 Watts
 Motor Weight 81.2 grams (2.86 oz.)
 Outside Diameter 27.7 mm (1.091 in.)
 Motor Shaft Diameter 3.17 mm (0.125 in.)
 Prop Shaft Diameter 5.00 mm (0.197 in.)
 Motor Body Length 33.0 mm (1.299 in.)
 Overall Shaft Length 35.1 mm (1.382 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-2217/26 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.

3-Cell Li-Po Power

Cobra CM-2217/26 Performance Data with APC 14x5.5-MR prop on 3S Li-Po

Cobra CM-2217/26 Performance Data with GemFan 14x4.5-MRW prop on 3S Li-Po

Cobra CM-2217/26 Performance Data with RC-Timer 13x5.5-CF prop on 3S Li-Po

4-Cell Li-Po Power

Cobra CM-2217/26 Performance Data with APC 12x4.5-MR prop on 4S Li-Po

Cobra CM-2217/26 Performance Data with GemFan 11x4.7-MR prop on 4S Li-Po

Cobra CM-2217/26 Performance Data with GemFan 12x4-MRW prop on 4S Li-Po

Cobra CM-2217/26 Performance Data with RC-Timer 11x5.5-CF prop on 4S 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