This motor is from the high performance M series, is rated to over 1.1kW, and suitable for 6S to 10S LiPo packs

Primarily aimed at large scale UAVs (unmanned aerial vehicles) this motor can deliver over 3.6Kg of thrust using an 18×6 propeller and running on a 6S LiPo. It’s ideal for large camera platforms, typically hexacopters or octocopters, and has been designed and constructed to minimize vibration.

Outside diameter is a fraction over 2″ (51.2mm) and it’s quite squat at 1.5″ (38mm). As you might guess from the part number, it’s a 320Kv motor, suitable for propellers ranging between a 15×5 and 18×6, and the shaft is 5mm.

Maximum continuous current is 30A. This motor is wound with single strands of 1.12mm diameter wire and although there’s some discussion about the merits of single versus multiple strand winds, Scorpion must be confident that their methods are giving some gains. At only 6.8 ounces (223 gm) it’s another example of the high power to weight ratio achievable with modern motor design.

Modern brushless motors (BLDC) are a fascinating if somewhat nerdy subject! For those of you who would like to find out more about how they actually work, the third link below is to an informative and easy to understand (well, I thought so…) overview from Texas Instruments.

Original post from http://rcmodelnews.com/

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Other motors in this series:

Now on to the golden motor awards!

Summary

After the average performance of the 2204 motor, I wasn’t quite sure what to expect with this one.  As with little bro, there is white balancing mud present inside the bell.  The bearings are the same smoothness, and machineing quality is identical. This one is even heavier, weighing in at 30g for the 2205 (same as the Emax RS2205). As I mentioned in the 2204 summary, this one is more gold in appearance where the 2204 was more yellow than gold (See photo at the right).  Now on to the results!

Test Results

I was quite suprised by this motor!  Performance started out fairly average on the 4″ props, but these things really began to shine on the heavier loading.  Starting with the 5×4 prop and moving up this motor began to pull away from the competition.  On the heavier props this motor outpeformed the Cobra 2204(2205) by a small margin, though still falling short of the beastly Emax 2205. From looking at the numbers, it appears the Scorpion benefits from being slighly more efficient than the Cobra in terms of amp draw, causing a bit less sag on the battery and gaining RPMs for it. That places this motor in the very solid performing category! Unfortunately the weight at 30g may reduce the appeal to some, but for those looking for a more economical and readily available alternative to the Cobra, this could be an option. As always be sure to click through to the full results at the top of the article.

Copy from http://www.miniquadtestbench.com/
Scorpion 2205 2350kv Full Results  [CLICK HERE]

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