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  Item found in the following categories;
> Electric Motors > All Outrunner Motors
> Electric Motors > Heli Motors
> Multi-Rotors & Parts > Motors
> Electric Motors > Outrunners by size > Specialised Motors

  RATED:

NX-4005-650kv Brushless Quadcopter Motor

NX-4005-650kv Brushless Quadcopter Motor
NX-4005-650kv Brushless Quadcopter Motor


If youre serious about your quad-copters performance, then look no further than the AX-4005. Built with high-end 45SH magnets, a high pole count and custom motor mount, this quad-motor is designed purely for multi-rotor applications.

The AX-4005 includes a built in prop saver for GWS style props and a built in aluminum mount for quick and easy installation on your quadcopter frame.

This is not a modfied aeroplane outrunner. It was designed from the ground up for quad copters.

Specs
Kv: 650rpm/v
Turns: 24T
Resistance: 0.147Rm
Idle Current: 0.6A
Can size: 45mm
Can Length: 10mm
Shaft: 3mm (Includes Prop saver mount for GWS style props)
Suggested ESC Amps: 20A
Rated Watts: 130W
Weight: 59g
Cell count: 3~4S Lipoly

Prop adapter suit 5mm propeller


PRODUCT ID: NX-4005-650

Kv (rpm/v) 650
Weight (g) 56
Max Current (A) 20
Resistance (mh) 0
Max Voltage (V) 15
Power(W) 130
Shaft A (mm) -
Length B (mm) 45
Diameter C (mm) 10
Can Length D (mm) 8
Total Length E (mm) 34
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Customer Data
79g Back warehouse: 0 10+ $30.81
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 Customer rated 4 crowns   
 
Total of 32 discussions.
mohamed  1 points - 5/8/2013
 
can i ask about the Screws size for fixing the motor .. and if its Screws come with the motor box or not .. thank u
 RaJack 7 points
Screws re M2.5 and no screws in box, so you need to purchase it separately.
MUSTAFA  233 points - 4/9/2013
 
dt750 ile kı*yaslanmamalı*,ç*ü*nkü* bununda farklı* oldugunu dusunmuyorum,nedeni her iki motorunda rulmanları* cok kucuk
toz topraktan dolayı* cabuk bozuluyor,rulmanlar kaliteli olmadı*gı* surece motorun onemi yok.!!!!!!!!!!
Garin  2 points - 4/8/2013
 
What type of screw does I need to couple motors to struture?
 RaJack 7 points
Screws are M2.5x8 or M2.5x10 depending on the thickness of mounting plate.
Johnny  1 points - 3/19/2013
 
Before you purchase anything for your quadcopter, ask yourself first, what do you plan to do with your quad? Is it for FPV flying only? Do you plan to put a camera? What size of camera? And, how much are you willing to spend on your quad? Basically for a quadcopter you need an FC (flight controller), a frame, 4 motors with 4 esc, a lot of lipo batteries and this excludes the tx/rx unit which I'm hoping you already have.
Garin  2 points - 2/25/2013
 
Where do I buy screws to this motor ?
 FrankPo 9 points
The screws are M2,5 I did buy some inox ones on eBay
 flyboyfresh 2 points
Can u send me a link
 FrankPo 9 points
www.link
 FrankPo 9 points
just give M2.5 inox as search in ebay, this forum does not allow links
 RaJack 7 points
M2.5 screws are here on hobbyking - for example Hex Screw (M2.5x10mm)(10Pcs/bag) - 110BS, A2003T, A2027, A2029 and A2035
nikos  1 points - 2/6/2013
 
goodevening everyone and i am sorry for my englich.... i want to make a quadcopter and i need your help for the electronic parts and for the motor ..if anyone can help me send me some detals.....thjank you about help...
 CrystalClear 12 points
Basically you'll need: 1)a quadcopter frame (to mount everything on) 2)a multi-rotor control board (the brain of the quad) 3)4 speed controllers(they control the motors) 4)4 motors 5)4 propellers 6)a battery 7)a transmitter/receiver system You should first visit some websites on making a quadcopter(google it) to get an idea of the whole process of building the quad and then buy the components. Building a quad from scratch requires some skills and a lot of patience, so if you lack any of these traits ,try a ready made kit ( plug n fly), a small one would be better, so as to master your flying skills.
 flyboyfresh 2 points
Hk form, go to multirotor and then go to multirotor for newbs the best information ever
Victor.Shore  23 points - 12/2/2012
 
Prop size please?
 FrankPo 9 points
I did put 10x4.5 for my Quad copter, this engine can probably even drive a bigger prop too, but i did not test that yet.
 flyboyfresh 2 points
Where do I get the screws for this motor
 FrankPo 9 points
The screws are M2,5 I did buy some inox ones on eBay
 flyboyfresh 2 points
Can u send link
 RaJack 7 points
www.link
Rahul  1 points - 10/7/2012
 
which esc and battery is suitable with this motor
 Gary 3000 points
It is a 130 watt motor so with a 3cell lipoly you will need around a 15amp speed controller,this is assuming a single motor,in a Quad then a 60amp wouild be best.Battery wise for a single motor then something like a 2500mah would be good.
 Donald 11 points
Actually... In a quad, you'll need 4 speed controllers, each at a 20A rating. Typically, you can't run 4 independent motors from a single speed controller.
 RattleSnake 361 points
I'm a bit suprised a "Pro Contributor" would give out such incorrect advice.
 Doug 64 points
It's one thing to give out info to help someone, but to say such idiot answers is just digging for points. Hope it doesn't cause a crash to the operator or an innocent bystander.
 flyboyfresh 2 points
I agree rattlesnake lol im a newbie and I knew better then that
Linus  4 points - 8/26/2012
 
Are there replacement bearings and shafts for this motor? If so, maybe you should add references to these in the product description :)
Atlantis222  8 points - 8/1/2012
 
Where I can buy parts for these engines and propellers holders. be careful with the media are somewhat weak propellers. thanks
 __HaKK 466 points
Yeah, these motors have the nicest small grub style prop adapters I have seen and would also like to see HK stocking these prop adapters separately.
roger123  121 points - 7/17/2012
 
i just at the spec and the dt750 is more efficient and cost 1/3 the price so even if the bearing are not the best one on the dt750 you have 3 motor for the same price of this one
 7daniel49 118 points
These motors are far more efficient that the dt750's in real world circumstances. I saw a guy on youtube fly his tri with these motors for 25 minutes. I get 12 minute flights with the dt750's on my tri... If this helped and is the best answer, please credit me.
 roger123 121 points
if you run dt750 at 4s you will get better efficient trust by the amps ratio
 rizky_p 214 points
i hava a quad running NTM 2830 750kv *4s, runtime is 22 minutes. i am using 4s 6000 nano tech.
PauloH  60 points - 7/5/2012
 
Hi can someone help me please? Im making a tricopter and Im not that graet with electronics, will this motor will I achieve greater autonomy flight will it be WITH THIS 620kv OR WITH A 850kv? Regards
 7daniel49 118 points
I'm not the best with this either, but I would say 620kv since it it spinning a larger prop and it doesn't have to wind up as much as the 850kv to get more lift. I wouldn't go for this motor if this is your first quad. You should be able to get all three motors for around $40... Make sure the thrust is the some on both motors and consider that in your decision.
BEST ANSWER CREDIT AWARDED
 PauloH 60 points
Thank you Daniel for the help
 7daniel49 118 points
You're very welcome. What did you decide to go with. I know as of yesterday the dt750 were instock. Those are very popular and a great value. You can get a buddy code and get a great deal!
 PauloH 60 points
I think Im goig for the DT-750 since Im starting in the tricopter's, and in the futere I will for update on the motors
 7daniel49 118 points
By any chance are you building a rcexplorer.se tricopter?
 PauloH 60 points
Yes I am are you too?
 7daniel49 118 points
I built one about 6 months ago. I crashed though, and bent the bell on a motor and ruined my kk board. My kk2 should be in any day now and I'll have mine back up in the air! Happy flying.
 PauloH 60 points
Im waiting too for the kk2 board, its on its way, wicth transmitter do you have?
 7daniel49 118 points
I use the turnigy 9x.
 PauloH 60 points
I have the Futaba 9C, Have to get the tricopter setup for it.
 7daniel49 118 points
Oh, I see. I'm no good with the transmitter so I just used acro mode like most people. I have only flown planes in the past.
 PauloH 60 points
Well im like you only planes, had and hk450 but never never could fly it, and after selling it, was talled that the problem was the gyro loool
 7daniel49 118 points
Watch davids episode about the tricopter on flitetest on youtube. He talks about rates and expos. Acro mode works just fine if you don't care to have a throttle curve.
 nanokhalid 18 points
Pauloh.. Low KV motor will be more efficient. But if too low, it need more torque and will be too wobbling on wind condition. I propose you to get high efficient motor directly rather then normal motor. Later on you need to upgrade the motor for long flying time.
David  14 points - 6/1/2012
 
No question just one comment. This motor has a 3mm shaft. I try to stay away from motors on quads with 3mm shaft. Just ***p a blade and you have a bent shaft. If these were 4mm or even 5mm they would rock.
Ian  1 points - 5/16/2012
 
I am planning to use these motors on the Turnigy Talon V2 carbon fibre frame. Have any of you mounted them on this frame or have any similar experience? Holes sizes and spacings do not match up.
Royby12  7 points - 3/24/2012
 
How can i mount them on a regular mount where the screws are 19X16 and not 27\13?
 SLOW STIK 53 points
Make a paper template and drill new holes in the mounting portion of your copter ! Simple task !
ryan.perera22  383 points - 3/8/2012
 
What's the difference (advantages) of this vs. other motors of similar kv?
OmarM  1 points - 2/12/2012
 
Hey guys, I am using this motor along with GWS HD8040 3 Blade Prop Counter Rotate (2pc) , as a testing propeller, I connected my (cheapo) multimeter, and I am measuring current draw as 2.6A at maximum speed, is that possible?! doesn't it have a 15A current draw or something?
 roger123 121 points
these motor are build for prop size 10 to 12 inch , that why you don't draw lot also 4s with this motor is the best with lot of trust
Ingrid  3 points - 2/7/2012
 
would theese motors work with 12 inch propellers? could anyone recommend prop/esc setup for theese motors on a quadcopter?
 Fly-hard 45 points
Use low pith small propellers like 1047 or 9047. It will help to maintain smooth flights. My recommendation is 1047. Im using these in my tricopter since 4months. 9047 also good but the problem is my tricopter weight is 1.1Kg so its bit hard to elevate with 9047.
OmarM  1 points - 2/5/2012
 
Could you please tell me how can I remove the additional prop adapter?! I need to install a 1147 GWS prop and I can't figure a way to remove the installed adapter
C  6 points - 1/23/2012
 
which esc should i go for???
 karan 395 points
about 20 Amp... as said....
BEST ANSWER CREDIT AWARDED
Fl_red61  111 points - 1/17/2012
 
What size screws are required for the motor mount? (How are the motor mount holes tapped?)
 __HaKK 466 points
2.5M screws are required for mounting, not included. I was very surprised myself, was expecting 3M.
BEST ANSWER CREDIT AWARDED
 Fl_red61 111 points
Thanks HaKK ** where did you buy your 2.5M screws? I can't find them anywhere, and Hobby King support won't help. I spent over $120 (US Dollars) on these motors, and I can't mount them! Please help!
 __HaKK 466 points
****
 Fl_red61 111 points
Yeah ** I visited the local hardware store that specializes in nuts and bolts ** the smallest they had was 3M. I live in the USA, where metric is considered "wrong" ** so anything metric is really hard to find here. I really wish the USA would finally convert to metric ** sigh...
 __HaKK 466 points
Yeah, I spent 4 years there saluting the flag on daily basis and at least all US military maps are in metric, so there is a start in an area where you really can't f... up your conversions :) This just gave me an idea though. I checked in Wiki that Canadians are way ahead of you in metrification (metric is French led to start with :) Try canadian on-line shops "metric bolt canada" gave me lots of good answers. And S&H from Canada should be as good as within continental US.
 __jafo 13 points
* FL_red61, Hey man you can find these bots here on Hobbyking Hardware & accessories. > Screws/Bolts/Nuts hope this will help you out, greets Michael.
 nanokhalid 18 points
_jafo. In HK, there are 2 type M2.5. Which one the best? 5mm length or 10mm length.
 __jafo 13 points
*nanokhalid, that all depends on how thick the bulkhead and motor-mount are so be careful not to damage the stator winding's cheers mate.
 RaJack 7 points
They are wright www.link
Anastasie  14 points - 1/1/2012
 
What is the recommended prop for this motor? can i have the link pls for counter and non counter props? what do i need to mount motor on HobbyKing Quadcopter Frame V1? I will give credit
Hélio  1 points - 12/30/2011
 
It's a good motor for 3~4S LiPo batt, how many LiFe batts you think i should use for a good performance in a quadcopter? Thx ^^
Onur  1 points - 12/28/2011
 
Hello HK, I wanna know can we drive this motor without ESC ?
 GH-1234 14 points
Normally no. you need something to generate the 3 Phasen AC, it is not possible to drive it directly with DC.
 Onur 1 points
Thanks GH-1234, so ESCs works like DC-AC converter? I search and learn their theories, but i dont think it works like you said. I think something else is going on ..
 glenncol 7 points
For give me if i am wrong but the stats on this motor is fairly ordinary
 RaJack 7 points
this is a 3 phase asynchronous motor. So you need a device, that could switch poles quickly to push the magnets by rotating e-m field.
kaon01  96 points - 12/25/2011
 
Wow these cost so much more than N2213 and DT750.
vladanos  1 points - 11/24/2011
 
Hey everybody, as GWS style props adapter is included which propellers can I use for my quadcopter? Everybody recommends APC propellers for quadcopters but can APC propellers fit on this adapter?
 __HaKK 466 points
Hi, you can unscrew the 2 hex screws that hold the additional aluminum prop adapter (with a rather thick shaft). This will leave you with a motor shaft sticking out and the 2 longer set screws that are meant for rubber ring mounting of props. Now you can use GWS style props on your quad :) I am building a guad with NX-4006 motors at the moment, because the lighter NX-4005 motors were out of stock for a while.
 vladanos 1 points
But can I use APC props with this motor? Which props exactly are you using?
joint  5 points - 11/15/2011
 
I have recently purchase this motor, the correctly distance of hole-hole is 27,5mm.
roberted5  104 points - 10/21/2011
 
Will the screw pattern on back of motor fit any X-mounts?
protoinova  16 points - 10/14/2011
 
Bevore 1 hour I got email that this article is on stock now. But is'nt. Furthermore I can't backorder http://www.hobbyking.com/hobbyking/store/images/em_c
ry.gif
 Roy_T 134 points
The stock is in. Place your order now!
Ricard  14 points - 9/15/2011
 
Is ir possible to remove the prop saver or is it a pert of the top of the motor?
 Hansc 373 points
it's part of the top (belly) of the motor. You can only remove the threaded bars, no more.
 roberted5 104 points
You can remove the bullet prop adapter but if you remove the allen screws for the built in prop adapter you need to replace them with the same size but short set screw so the housing doesn't come off in flight.
 Ricard 14 points
I just find it very strange that they call it "If youre serious about your quad-copters performance" and they put a prop saver on it. Who the hell uses a prop saver for a "serious" quad copter????
 Choppy 165 points
It looks like there is also a prop adaptor on the "GWS" prop saver style mount that is "built in". You can be serious or not so serious.
I like how the shaft is nearly non existant, less chance of bending that short shaft maybe?
Customer Reviews
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__HaKK
364 likes
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Nice wide can motor for quadrucopters. The additional prop adapter is handy for sturdier props, but if you want to go with GWS style or other thin shaft props then you can simply remove the aluminum prop adapter and use the rubber ring to mount directly on the shaft and making use of the 2 very long set screws the motor comes with.


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Rodolfo
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I got mine for use on a Quad Copter. I havent tested it yet, it looks great, and I think it will be very powerful. The finish is great and the mounting holes are a good way to mount them!


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Rodrigo
989 likes
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Otimo produto. Recomendo a compra...


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nerio
40 likes
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This motor does not fit on HpbbyKing quadcopter frame V1! Be carefull. I don't understand why HK does not advise for this. I will adapt a frame dedicated, but really I am not happy for this.


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Paul
15 likes
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Really smooth running and well made motor.Keyed magnets,silicone wires,grooves in shaft for the grub screws to lock into. The shaft is held with two grub screws and the supplied prop adaptor has two grub screws too.It is a snug and secure fit. On my 1kg quad i am using 10 by 3.8 apc slowfly props.This fits the adapter with their supplied 5mm ring.Getting 12 mins on a 2200 3 cell.On an 1800 4 cell the quad is really powerful and will easily lift another 400 grams but the motors are still barely warm. Note-The outside three holes are for mounting, and require M2.5 bolts. On a shallow note,i really like the look of these low profile motors..


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