Aikon SEFM 30A ESC with BLHeli_S – Review & Thrust Test

by Oscar

Many thanks to Aikon for sending me their new SEFM 30A ESC for the tests, which runs the latest ESC firmware – BLHeli_S.

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I will test the Aikon SEFM 30A ESC on the thrust stand first, and then later on put them on a quad and try them in real flights.

Aikon SEFM 30A ESC top mcu processor

Why am I excited about this new ESC?

Apart from being rated at 30A (good news for people who like to over-prop their motors), the Aikon SEFM is one of the first electronic speed controller to support BLHeli_S firmware.

We have already covered BLHeli_S before, check out this post to see why it’s awesome.

The ESC’s I received came with BLHeli_S 16.0 firmware, and I updated it to the latest version (16.1) before testing them. The way flashing BLHeli_S is the same as BLHeli, you can either use flight controller pass-through (Cleanflight), or the “one wire interface” method.

The Aikon also has dedicated hardware to generate PWM signal for the motors, which make them run smoother. Traditionally majority of the ESC’s use software generated PWM (Littlebee 20A, XM20A, you name it), it works but it isn’t the best. KISS ESC’s are highly praised for their smoothness thanks to the hardware PWM, and now they are finally facing competition.

Aikon SEFM 30A ESC BLHeli_S bottom fet

Thrust Test

  • Motor: EMAX RS 2205 2300KV
  • Battery: 4S Turnigy Nanotech 65C
  • Props: DYS 4045BN, Gemfan 5030, Gemfan 5045, HQ 5040 Triblade, Gemfan 5045 Triblade.

Very interesting to see that the Aikon outperformed both Littlebee 20A and XM20A in terms of thrust.

Aikon SEFM 30A ESC BLHeli_S thrust vs littlebee20a xm20a

Props   % Peak Thrust – g Peak Current – A Max Power – W Efficiency – g/W
DYS 4045BN Aikon 30A 50 249 4.4 71.9 3.46
    100 636 18.8 305.0 2.08
  LB20A 50 262 4.6 74.5 3.52
    100 630 17.3 280.3 2.25
  XM20A 50 252 4.7 76.1 3.31
    100 619 18.1 293.2 2.11
GF 5030 Aikon 30A 50 298 4.0 65.4 4.55
    100 806 16.6 268.9 3.00
  LB20A 50 300 3.8 61.6 4.87
    100 790 15.5 251.1 3.15
  XM20A 50 299 4.0 64.8 4.61
    100 779 15.4 249.5 3.12
GF 5045 Aikon 30A 50 364 5.1 82.8 4.40
    100 952 22.5 364.5 2.61
  LB20A 50 368 5.6 90.7 4.06
    100 875 21.8 353.2 2.48
  XM20A 50 339 5.3 85.9 3.95
    100 892 22.9 371.0 2.40
GF 5045 Tri Aikon 30A 50 433 6.6 106.9 4.05
    100 1068 28.3 458.5 2.33
  LB20A 50 405 6.2 100.4 4.03
    100 1004 26.3 426.1 2.36
  XM20A 50 395 6.6 106.9 3.69
    100 997 27.3 442.3 2.25
HQ5040 Tri Aikon 30A 50 422 6.3 101.7 4.15
    100 1044 26.0 420.6 2.48
  LB20A 50 402 5.8 94.0 4.28
    100 975 24.8 401.8 2.43
  XM20A 50 389 6.0 97.2 4.00
    100 980 24.6 398.5 2.46

In the coming days I will be testing these ESC’s on a quadcopter see how they perform, stay tuned.

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Jacob Alao 27th November 2016 - 8:48 am

Hi Oscar…Great blog. Need your recommendation. I upgraded the firmware to the latest on the Aikon 30A. Unlike the Kiss24A, I dont see it actively breaking. Am i missing something. Did I do something wrong? Please advice.

Oscar 28th November 2016 - 3:59 pm

Active Braking is turned on by default and you can’t turn it off :)
I believe what you are witnessing is just “braking on stop”, which you can switch on in BLHeli_Suit.

Dus022 31st October 2016 - 6:58 pm

Hi Oscar, my Aikon sefm firmware also got erased and I can’t refresh blheli and I can’t find any info on my issue, any help would be appreciated.

Kaan Aslan 25th August 2016 - 1:37 pm


Does the LittleBee 20A BLHeli_S also have dedicated hardware to generate PWM signal for the motors like the Aikon 30A? I just received my new LB20A BLHeliS ESCs and I’m trying to decide if I should switch them with Aikon 30A ESCs.

Oscar 26th August 2016 - 3:06 pm

BLHeli_S ESC should all have hardware PWM

Daniel Nowlin 21st August 2016 - 5:25 am

Any idea on how to unbrick/restore FW onto this esc using the pads?


Pete 5th September 2016 - 1:59 am

I don’t know but need this info also on the pad assignments after the 16.3 firmware erased them and they are now not recognised in BLHeli.

Bryan Wolfe 28th July 2016 - 12:46 pm

Hey! Did you ever run into the Desync issues as well? Still struggling…

Oscar 7th August 2016 - 2:19 pm

no… i haven’t noticed any desync with my aikon 30a..

Felix Perez 9th July 2016 - 3:25 am

when should I use medium high motor timing with this esc?

Oscar 9th July 2016 - 11:29 pm

when it performs better for you :)

Dirk 29th June 2016 - 2:42 pm

Could you test the Aikon with 5s? Someone is running them on 5s and I would like to know if they can handle that?

Oscar 30th June 2016 - 1:46 pm

i might if i can get hold of a 5S lipo :)

Cameron Crandall 15th June 2016 - 5:36 pm

Did you have issues getting these working? I’m having weird desync that makes the quad fr eat out when I try to fly.

Oscar 19th June 2016 - 10:30 pm

just building my quad this week with these ESC, running them on SE2205 2300KV we will see!

kubais 10th June 2016 - 11:03 am

I wish these were out like a month earlier when I bought LB30 that are huge and twice as heavy! Maybe next season ;)

Oscar 13th June 2016 - 3:09 pm

there could be new ESC coming out every month so you don’t have to feel sorry haha :)

me 4th June 2016 - 6:20 am

What motor did you run these tests with?

Oscar 5th June 2016 - 9:58 pm

oops, i forgot to mention that, it was the RS2205 2300KV motor.

Vaclav 1st June 2016 - 9:47 am

“Stay tuned” is simply the best closing line for a quadcopter-related article!

Oscar 1st June 2016 - 3:03 pm

LOL literally…

Bertie Macdonald 1st June 2016 - 8:06 am

Hi oscar,

Do you think it’s a fair test facing the aikon 30a esc with the xm20 and little bee?

Surely a better test would be with similar 30a esc’s?

Great blog you’ve created and I’ve learnt so much from it. Keep up the good work ?

Oscar 1st June 2016 - 3:03 pm

The test here mainly focus on how much power they put out, and they are probably the most common ESC right now, so people might find an excuse to upgrade to :) LOL
main reason is that those ESC’s are the only ones that i have.

me 1st June 2016 - 9:36 pm

They’re all the same size, so it’s a fair comparison. Why run a 20a esc when a 30a one has the same footprint :)?