Hacker A20-34S measurements
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Hacker A20-34S measurements
Well, it finally arrived...My tiny Hacker A20-34S, that is. I was dieing for the kids to get to bed so I could have some play time with it. Anyway, I hooked it up and made some measurements.
First off my setup included a Hacker X7 controller and a Thunder Power 2S 480 pack. My measuerments were made with an Astrofilght Whatt Meter and an old Hobbico tach.
Prop GWS 8x4HD
Current draw 6.9A
Watts 43
Voltage under load 6.2
RPM 7800
Prop GWS 9x4HD
Current draw 9.5A
Watts 55
Voltage under load 5.8
RPM 6100
Prop APC 8x3.8SF
Current Draw 8.4A
Watts 50
Voltage under load 6.2
RPM 7000
Prop APC 9x3.8 SF
Current draw 9.8A
Watts 56
Voltage under load 5.7
RPM 6200
Of course, there is nothing scientific about these numbers so don't use them for anything more than a rough idea of what the motor is capable of. I might run these same tests on my Lens 17T tomorrow, just for comparison purposes.
I don't have a thrust measuring stand. Wish I did.
Anyway, my over all impression is that the motor is a little gem. It looks to be of very high quality and it's pretty light. I'll put it on the scale tomorrow.
The little Hacker 7X controller seems to be pretty good. It had no trouble handling over 11 amps when I hooked up my bigger 2S TP 1320 battery. I did notice that it dosen't start up as well as my CC Phoenix 10s. It hesitates and runs backwards for a split second before in runs properly. I think I like my CC controllers better, if for no other reason than the easy programming that the Phoenix link offers.....and the smoother startup.
For what it's worth. I plan on using the APC 8x3.8 as a starting point. I think it's the best compromise between good power and not over proping too much. The 9" props just work the entire system too hard for my liking. I can't afford burn things up and replace them on a regular basis.
Wiz
Wiz
First off my setup included a Hacker X7 controller and a Thunder Power 2S 480 pack. My measuerments were made with an Astrofilght Whatt Meter and an old Hobbico tach.
Prop GWS 8x4HD
Current draw 6.9A
Watts 43
Voltage under load 6.2
RPM 7800
Prop GWS 9x4HD
Current draw 9.5A
Watts 55
Voltage under load 5.8
RPM 6100
Prop APC 8x3.8SF
Current Draw 8.4A
Watts 50
Voltage under load 6.2
RPM 7000
Prop APC 9x3.8 SF
Current draw 9.8A
Watts 56
Voltage under load 5.7
RPM 6200
Of course, there is nothing scientific about these numbers so don't use them for anything more than a rough idea of what the motor is capable of. I might run these same tests on my Lens 17T tomorrow, just for comparison purposes.
I don't have a thrust measuring stand. Wish I did.
Anyway, my over all impression is that the motor is a little gem. It looks to be of very high quality and it's pretty light. I'll put it on the scale tomorrow.
The little Hacker 7X controller seems to be pretty good. It had no trouble handling over 11 amps when I hooked up my bigger 2S TP 1320 battery. I did notice that it dosen't start up as well as my CC Phoenix 10s. It hesitates and runs backwards for a split second before in runs properly. I think I like my CC controllers better, if for no other reason than the easy programming that the Phoenix link offers.....and the smoother startup.
For what it's worth. I plan on using the APC 8x3.8 as a starting point. I think it's the best compromise between good power and not over proping too much. The 9" props just work the entire system too hard for my liking. I can't afford burn things up and replace them on a regular basis.
Wiz
Wiz