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Performance problem with jDrones AC2836-358 880kV motor, please help.

Posted by Ultrafuge on March 7, 2013 at 9:28am

Hi,

I have the jDrones AC2836-358 880kV motor, with the jDrones 30A ESC and the jDrones 12x4.5 EPP composite propeller. According to jDrones I should get:

Tested thrust:

Power out put from ESC, 3S LiPo, 12x45 Propeller	25%	50%	75%	100%	Amp Wattage Thrust	1.5 A 17.5W 230gr	6.1 A 70W 650gr	14.2 A 160W 1290gr	20A A 210W 1380gr

Power out put from ESC, 3S LiPo, 12x45 Propeller

25%

50%

75%

100%

Amp
Wattage
Thrust

1.5 A
17.5W
230gr

6.1 A
70W
650gr

14.2 A
160W
1290gr

20A A
210W
1380gr

Using a test rig with the propeller mounted as a pusher directly pressing against the scale and a fully charged 3s 6100mAh 25C LiPo, a Fluke i30 and a scale with 0.1gr resolution I get a maximum of about 950gr @ 13A(12V). So I am missing about 1/3 of thrust. What is wrong ? Anybody getting the same disappointing numbers ?

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