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  Item found in the following categories;
> Speed Controllers > All Speed Controllers
> Speed Controllers > HobbyKing ESC
> Speed Controllers > 40 to 79 Amp
> Multi-Rotors & Parts > Speed Controller > Hobbyking Blue Series


HobbyKing 40A BlueSeries Brushless Speed Controller

HobbyKing 40A BlueSeries Brushless Speed Controller

Its no “Mystery” where these ESCs are made, now they are available to you at HobbyKing prices.

Built with imported N-Channel mosFET's and an ultra fast Atmel MCU & heartbeat make this a high performance ESC with excellent sync capabilities. This ESC has a 4A SBEC for solid reliable servo power.
Programmable via an R/C controller.It allows you to program all functions to fit your specific needs, which makes it efficient and user friendly.
Extremely low internal resistance
Super smooth and accurate throttle linearity
Over heat and over-load protection
Auto shut down when signal is lost or radio interference becomes severe for more than 2 seconds
Supports high RPM motors
Power arming protection (prevents the motor from accidentally running when switched ON)
New Advanced programming software
Programming features:
Brake setting (we recommend using brake for only folding props applications)
Battery type(LiPo or NiCd/NiMh)
Low voltage cutoff setting
Factory default setup restore
Timing settings (to enhance ESC efficiency and smoothness)
Soft acceleration start ups (for delicate gearbox and helicopter applications)
Governor mode(for helicopter applications)
Motor rotation( clockwise\counterclockwise)
Switching frequency
Low voltage cutoff type (power reduction orirnmediate shutdown)
Factory default settings:
Brake:  off
Battery type Detect:  LiPo with Automatic Cell
Low voltage cutoff threshold:  Medium (3.0V/65%)
Timing setup:  Automatic
Soft Acceleration Start Up:  Medium
Governor mode :  OFF
Frequency :  8kHz
Low voltage cutoff type:  Reduce power

Cont. Current: 40A
Burst Current: 60A
Battery: 2-6 Cell Lipo / 5-18 Cell Ni-XX
SBEC: 5.5V/ 4A Output
Size: 52*23*7mm
Weight: 30g


This product available from a warehouse near you!

Weight: 49g
International Warehouse
USA West Warehouse In Stock View Item
Price $19.95

  • Mystery 40A Brushless Speed Controller (Blue Series)

    Combo Price: $21.15   IN STOCK

Further discounts available for registered & logged-in customers.
 Customer rated
Total of 154 discussions.
JolleNo  1 points - 10/24/2014
Don't know if the hardware has changed or what. I bought 4 of theese a few weeks back. I tried to flash them with the latest SimonK, but they ended up unable to calibrate with my motors. No beeps, and motors just stuttering no mather what I tried. Also tried the BLHeli firmware, but didn't calibrate correctly with that firmware either. Might be my setup 4s, SunnySky x2212 980kv. Just a warning.
khellio  1 points - 8/10/2014
Being a newbie, I bought one of these blind to upgrade the motor on my Bixler 2. However, it came with no paper work on how to program it. I have no program card either. Any help or suggestions would be appreciated.
 Napstr 1169 points
Hi the instructions for this ESC are located in the purple 'files' tab above they will tell you how to program using your transmitter - a programming card of course makes things easier.
 OldFartFlyer 1507 points
Hi Khellio, Napstr is correct about the files tab. The download is quick. But I disagree with his view about programming cards. The cards do not allow you to fully configure the ESC. For example, if you want to change the switching frequency to save power and get cooler running, the card will not allow you any control of that parameter. Instead, you have to programme the ESC with the tx. So if you want to be a serious user you'll need to get the hang of Tx programming - it's easy anyway if you read the instructions properly.
 khellio 1 points
Thanks guys. I got it figured out OK...I think.
 Mihalich 1 points
George Velkov  1 points - 8/8/2014
Thanks very much for the reply.George
George Velkov  1 points - 8/7/2014
Hi All, Is this a suitable controller for electric motor Turnigy D2826 / 6 and jet plane? Thanks in advance for your attention Sincerely George
 OldFartFlyer 1507 points
This ESC will handle that motor okay.
Thomas  1 points - 7/29/2014
Thanks very much for the reply* learning is a constant curve Tom
 OldFartFlyer 1507 points
Another point, four of these will weigh around 125gm. try to keep your airframe light.
Customer Reviews
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Overall Rating
8 thumbs up!
Every motor I've tried with this ESC runs VERY hot. Also my battery time is shorter. You can to better in this price range.

6 comments. Reply..

Overall Rating
5 thumbs up!
Wow, I am glad I bought this when I did! This is a fantastic speed control. I hooked it up to my new HK 450MT project and have had no problems. I haven't gotten the chance to really load it up yet, but it runs cool in hovering (test flights).

I deducted one star because it comes with no instructions. While you can build the HK 450 with T-Rex instructions, I wouldn't attempt programming the ESC with them!

Thanks again, HK!

3 comments. Reply..

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Overall Rating
1 thumbs up!
-Still Did not test it
Great Quality..... Even shipping is Good. I m from India and I ordered about .983 Kg(Total) and i received it within 11 Dayz from the date of Shipping.....Thats Great... Thankx Hobby King.. :-)

2 comments. Reply..

Overall Rating
Like it?
Good quality ESC
weight is 39.1g with XT60 plug and 3mm bullet connectors
The servo wire is long (26cm)

2 comments. Reply..

Overall Rating
Like it?
Best ESC so far, will not use others for the time being. Very easy to program with the correct programming card.

1 comment. Reply.. here to see all reviews
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