Thursday, March 8, 2018

DYS Samguk Shu 2306 2800 Kv motor initial impressions and testing

Hi Everyone -

Received my DYS Samguk Shu 2306 2800 Kv motor in the mail today😊  Regular price is $12.58 USD although I got mine on sale for $9.90 which is still the price as of writing this post, although it is currently out of stock for the second time since the motor was released.  Must be popular😉

Just basic packaging, even comes with a bit of a Chinese proverb/story?
Standard bag of goodies, prop nut, mounting screws and a couple extra C clips.
Top view of motor, shaft is hollow on the top, as you can see in the second picture it is solid towards the bottom.
Bottom view.  This is a "naked bottom" motor that seems to becoming a popular design in quad racing motors to keep weight down.  The bolt pattern is actually 16x16 mm as opposed to 16x19 mm.  This also seems to be a current trend in the newer quad racing motors.  It is a bit of an optical illusion, the magnets are flat, not curved like some of the higher end motors, but that would be expected for the price.

The motor spins smoothly, no bumps, but the magnets don't feel as strong as some of the other motors I have tested, again could be due to the inexpensive price.
Motor weight without hardware is 32 gr/1.1 oz.  Banggood website says 33.56 gr.  Motor wires are 150 mm/5.9" long.
Motor weight ready to go in the plane with prop and hardware is 46 gr/1.6 oz.
Due to the bolt pattern, I will have to trust the X mount will stay connected with two screws.  Co-pilot gives his approval👍😉 
I managed to get some initial bench testing done with the three ESCs I have been using/testing, you can read the details on my motor test spreadsheet, if you scroll along the bottom of the spreadsheet, you will find this motor has it's own tab. Since the Turnigy Plush 40A is the one I will use for initial field testing to keep it consistent with all the other initial field testing I have done, here are the numbers.  Using the 6x4 APC gas prop and Gens Ace 2200 3S 45C battery (links are available for these on the spreadsheet).

50% throttle - 14.3A/175.3W producing 525 gr/18.5 oz of thrust;

100% throttle - 40.1A/458.0W producing 965 gr/34.0 oz of thrust.

So it is definitely an "amp hungry" little beast at full throttle.  I must admit I expected the numbers to be higher, but as I have learned, the bench numbers don't always reflect field performance, so it is in my test bed Mig-35B and ready for some action in the air😊  As often happens, there is not published maximum amps for this motor, according to some charts on the Banggood website, it pulled 42A in some testing, so I will have to see how the motor responds in the air.

Park Jet noise...the "other" sound of freedom😎

Cheers, 

Scott











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