[Garry Howard]

Hope you guys can help. I have my first electric powered plane,and am having trouble getting the power out of the motor for aerobatics. The plane is a Dynam Smoove with a 5000 mah 6cell ,Electify silver series 80 amp esc,and Hacker A50 14-pole motor.
It gives 880 watts,36 amps at 5600 rpm on a 17x10 prop, and 800 watts,33 amps on a 16x12 prop. The plane is about 8.5 lbs
This plane with this combination does not have the power for pattern aerobatics.

[cosmith]

Seems pretty low for that combination.

I think you need to look at the settings in your ESC.

What is the C rating of your battery, and have you tried multiple batteries?

[Garry Howard]

c rating is 30,not sure about how to change settings in esc

[cosmith]

I would start by checking out the manual for the ESC to see how to program it. Then look up recommended settings from Hacker and match them up. Make sure you're running the correct prop for the lipo you're running as well. Hacker rates that motor for 1250 watts and they seem to under rate them by a large margin so you should be able to get at least that.

Aside from that, 30c is fairly low and depending on the lipo you could actually be getting less.

One last simple thing, make sure your radio has 100% travel on the throttle and calibrate your ESC to your throttle...that should be in the ESC manual as well. Often times it's as simple as powering the ESC up at full throttle and waiting for a tone. Take the prop of before trying anything your aren't 100% sure about.

Let us know how it goes!

[stegl]

Originally Posted by Garry Howard

Hope you guys can help. I have my first electric powered plane,and am having trouble getting the power out of the motor for aerobatics. The plane is a Dynam Smoove with a 5000 mah 6cell ,Electify silver series 80 amp esc,and Hacker A50 14-pole motor.
It gives 880 watts,36 amps at 5600 rpm on a 17x10 prop, and 800 watts,33 amps on a 16x12 prop. The plane is about 8.5 lbs
This plane with this combination does not have the power for pattern aerobatics.

Hi Gary: just curious on your motor numbers ; are these actual measured numbers ie amps , rpm , watts or from the specs. The prop seems to be a little big for a Hacker 50 series motor. I use Scorpion motors and a series 50 or even a series 40 and 6S would take you to the moon . When you want performance ; building light is the name of the game.
I also go with Castle Creations ESC's as programming them to get the best performance is one of the easyiest out there .

Doing some comparisons and think you may also have too much prop and pitch, lugging the motor down.

[Garry Howard]

Thanks you guys, numbers were actual measurements, I will try the calibration Monday

[cessna180]

eCalc computes you should use a 14/8 prop and web-o-calc a 14/10 prop
Michael

[Garry Howard]

If my esc has 12 degrees timing and motor is recommending 20-25 would that effect power output from the motor

[twistedge]

Which model motor do you have? The Hacker website show much higher numbers for the same prop/battery combinations on the A50-16 S V3 14-pole

1210 Watts on your 8.5lb plane would give 142 Watts/pound.. which is plently for pattern flying.

Are you hearing screeching noises at any of the throttle ranges? There are usually some tell signs if the timing is off on a brushless motor.

http://www.hacker-motor-shop.com/e-v...&c=6681&p=6681

[Garry Howard]

Hacker motor is a50 14-pole v2 no screeching noises, could be I am over propping ??