NTM Prop Drive motors are rock-solid performance outrunners with tight windings, quality bearings, correctly rated magnets, balanced stator and flux rings plus they are QC checked at 14 points, from material processing all the way through to final dyno test.
Because we design and build these motors completely in-house (from 3D/2D drawing to materials sourcing, machining, balancing, final assembly and dyno) we can completely control production and ensure product consistency from design right through to shipping the product to you. The removal of middle-men has meant we can drive better value to the market and retail these motors at factory(our) prices! All performance figures are real and tested on our own motor dynos. Perfect Kv and size for quadcopters!
Our QC engineers check and balance each motor before shipping to the HobbyKing.com warehouse.
Just went for a fly then with my Reptile quad. 4 of these motors with two 4S 3300mah (so 6600mah total) and I only got 7 minutes of flight with 10" props.
The quad weight is 1.9kg with 2 batteries, 1.6 with one.
Any suggestions to prolong the flight time? Put it on a diet is hard as it is carrying FPV gear (gopro TX).
If I switched both batteries out for a 4500mah would this be better?
You need the accessory pack anyways (comes with the prop mount which you need) so you'll be getting mounts anyways. I have a talon v2 and can mount directly to the frame so the motor mounts are in a drawer somewhere...
For the record i have four of these attached to*
Frame: Turnigy Tallon V2.0,
FC: kk2.0 (flashed with 1.5)
Props: SF 9x4.7,
ESC: Plush 30's,
Batt: 3300 mah 4S
It flys great, Stays cool, and i get 19 mins of flight if i'm relaxed with it or 16 if i'm aggressive. It's my first attempt and its really nice to fly!
Can anyone tell me max current using an 11x4.7 prop?
I don't have any way to test my motors and i want to buy current sensor for my quad that as a maximum of 90 amps ind i need the maximum current used by a motors to multiply by 4 to see if 90 is enough.
Motor * Maximum
Current: 10.13 A Voltage: 10.65 V Revolutions: 5725 rpm
electric Power: 107.9 W mech. Power: 82.6 W Efficiency: 76.5 % est. Temperature: 41 °*C 106 °*F this according to ecalc with a 3S And according to ecalc with a 4S you should be right around the following Motor * Maximum Current: 15.51 A Voltage: 13.93 V Revolutions: 7003 rpm electric Power: 216.1 W mech. Power: 162.2 W Efficiency: 75.1 % est. Temperature: 58 °*C 136 °*F
Now those results will vary depending on the weight of your airframe and the C rating of your battery. I used a 65 C battery to get those results and noticed it dropped a little bit when going to smaller C ratings.
ASpp. how much Thrust are these gonna give me with 11" And 12" Props on a 3S LiPo and 30A ESC?
I am currently working out a Project with 18 (YES 18 !!! ) Motors to where i want to use 12 Motors with 12" Props and 6 Motors (closer to Center of Craft) with 11" Props but cant find any REAL Data/Info about Thrust on said Configuration.
And NO I dont want to use the Calc.ch Programm as i bnever gotton any TRUE Results from it before (might be User-Error), instead i rely on experiences opf People having in real Life with these Motors.
So if anyone could give me the needed Info i would greatly appreciate it, so i can start ordering some of the 18 (plus 2 Spare) Motors.
Thanks in Advance
Well what I can tell you is this, I got 4 of these from a friend and put them on a 28 ounce quad at first using 10 x 4 5 props and ecalc nailed it saying that it would hover at about 62% throttle. So I ordered some APC 12 x 6 props, ecalc claimed that the exact same set up would hover at 32% give or take, not hardly. I had to push the things almost 80% to get off the ground and for what little I did hover my 30 amp ESC's got really warm. Now I'm not convinced by any means that these motors are rated accurately. I had really high hopes but so far I'm just left scratching my head because I put on Turnigy 1000 KV orange motors with 10 x 4 5 and that same quad hovers at about 47%
As a caveat I had been doing some research and have been coming across quite a few articles that recommend using a 4S Lipo with the lower KV motors. In addition a friend of mine in Oregon was out at a flying field recently and noticed a guy with a quad with 4 of these motors and I believe 10 inch props and he couldn't get the damn thing to fly using the KK 2.0. So remembering what we had been talking about my buddy asked what battery he was running, he was running a 3S Lipo and my buddy asked if he ever had tried a 4S? He said he hadn't in my buddy just happened to have one with him so they put that on and without touching the KK 2.0 he said that quad flew perfect. So it may be that these motors are going to respond better on a 4S versus a 3S. I'm ordering a 4S next week to do some testing on mine and will post the results here
Well thank you for your INfo ... so far for my Project i have 18 of 30A Multistar ESCs here which i will flash with simonK ones i get the TOOL. Motors i have 9 here so i need to get 9 more for my Project which be a while anyways... ESCs and MOtors will do 4S and i have 2 5000mAh 4S form my 1/5 HK BL Buggy here i can try too... but i believe with me wanting to use 11" Props amd 18 Motors i will ha ve enough Thrust... SLOW KV Motors should have bigger Props so i think he may didnt lift off due to 10" Props
Well I have personally had worse performance out of these motors on the exact same quad rotor using 12 x 6 props than using 10 x 4.5 albeit with the 3S Lipo. With the 10 inch props it would take about 60 to 70% to hover and with the 12 x 6 it was close to 90% it was just like it didn't have enough power.
Has anyone rewound one of these? Newb here and i was wondering if someone could help me out with some info on rewinding this. Does the stator come off somehow. How exactly is it done. I have several where the wires broke off flush.
and nothing will over heat ?
whats the rule on that ? could you go even higher or even lower ? like a 18A ?
sorry i'm pretty new.
also flying these on a tricopter with a 4s 3300 30c battery I would get a pretty long flight?
use higher rating for ESC than the max current of the motor. generally you can use 25A ESC for 25A motor, but if you're keeping the throttle high most of the time mostly likely the ESC will be hot and may even burnt out. 18A esc for 25A max may be use only for half throttle, if you push the throttle full it will be burnt in a matter of seconds. 4s 3300mah if you keep full throttle roughly will give you 5 minutes flying, below half throttle will give you longer. but again read what wolfes1126 said, it depends on a few parameters.
Ok I will try this again.
Thanks guys for all the info.
the current motors i have now are 1300kv and i get 8min45sec flight time of just hovering so I should get more flight time out of there hopefully.
has anyone used these yet? are they well balanced ?
you didn't mention how many watts your current motors are now. rule of thumb, bigger watts = bigger current draw = shorter flying time. I use this on my talon quad, using 2200maH hovers for 6 minutes, after that started to descend gradually. the balance is not perfect, but I find it rather tolerable.
The listing is incorrect. These are not 140w motors. They are 265w motors on 4s (based on the graphs listed above). The 140w is actually the motors output when consuming 265w on a 4s battery. Having said that, if you use these you may be able to increase your propeller size and increase your flight time. (rough rule-of-thumb: larger propeller and lower Kv motor should increase flight time while smaller prop and higher Kv should increase responsiveness.)
argus, yes these are definitely higher than 140w. I own four of them for quad-copter. They are rated for 20A max. The power they could consume at peak equals the voltage multiplied by the current. For a 4s scenario this is 14.8v * 20A = 296w. This is consistent with what you will see in the above 4s graph if you look at the pink line.
was about to purchase this for my Turnigy Talon Hexcopter but was a little worried after reading the responses to Jan Ivars question.
carrying a go-pro hero 3 hoping for just a 4000 mah 3s but it will be carrying a 191 gram camera Gimbal
any opinions on this set up?
Thanks for any help
I want to build my first quadcopter, but I need it to be strong enough to lift my Canon EOS 5D Mark II for about 4-7min of flying!
Is this possible?
I`m thinking about:
4 x NTM Prop Drive Series 28-30A 750kv / 140w ENGINES
4 x TURNIGY Plush 25amp Speed Controller`s
with a lightframe will this work?
Thank you for all your answers :)
This is a Quad X Multirotor using a DJI Naza control system and a Panasonic Lumix FT3 camera 1.8 Ah 4 cell LiPo battery. Home made frame of x4 300mm 12mm Aluminum booms and two 150x150x3mm plywood central hub. 25A Turnigy Plush ESC's Hobbyking NTM Prop drive 28-30A 750kv / 140w motors.
I am building my 1st quad. I have the X525 frame and I went with the 28-30 750KV motor, I also purchased the accessory kit. Problem is It seems nothing I buy from HK has any instructions. I downloaded the instructions in English for the frame, but I can't find anything on the motor. Please help if you can with the fellowing queries.
#1 The frame specs say it has motor mounting holes at 14mm to 30mm, but no-one took into account the diameter of the screw. Actual mounting hole spacing is about 16-28mm. The motor accessory kit comes with a mounting bracket that extends the mounting hoes to about 34mm. so the mounting bracket with the kit is useless on this x525 frame. Can I mount the motor directly on the fiber-glass motor mount or is there a smaller mount for the NTP series of motors. #2 Mounting the kit prop extension is great, but then what is the purpose of the shaft? Can the shaft be removed or cut down. I see other NTP motors with a short or no shaft, but none at this rating. Can the shaft be shortened or should I just let it stick out the bottom of the mount? Thanks, I do appreciate all of your time and anyone who has a solution. If anyone has a file or video on how to disassemble the motor I'd appreciate it. from reading your comments I may be changing bearings in the future. Regards Tom
I solved the problem. I bought the NTP 28 accessory kit and thought I HAD to use the aluminum motor mount. Then poked around here and found that most builders mount the motor directly to the fiber motor mount. So now all I need is some round head m3 x.50 6mm screws and a few washers. I could use some help on shortening the shaft though. THANKS
Hi Guys, Thanks for the Video and other remarks. Good idea sealing it a plastic bag. I'm thinking about pulling the shaft and cutting it off with a fine hacksaw blade. I just hope I don't upset the balance. It would be nice if HK offered a shorter shaft for all their NTP motors.
Hi Guys, Finally got my 5 motors. Problem now is I can't get the shafts out. The clip comes off no problem. But the set screw must have been crazy glued in, all I can do is strip the head. I can't imagine why HK sells replacement #28 shafts when you can't take the motor apart. Any ideas? If not I guess I'll have to do what the video shows. What to do when the bearings go???
Thomas....I had the same problem..I removed the can used a small pencil torch and a small press from harbor freight...sorry thats to remove the shaft... the set screw I drilled out with a 2mm drill and used a very small easy out heated the can and used the easy out heated the can and out it came. then ran tap in the hole This works and does not ruin anything Caution watch the heat... Marvin....
Hi, thanks, I'll have to try it out. meanwhile the frame I ordered will allow the old shaft to stick down through the mount and not interfere with anything. I think I'll go with the short shaft version of the motor. It's 1000Kv which is only 250 more than the 750KV. I'll send your comments to a friend of mine in Australia who is having the same problem. Thanks again.
Hi Guys, new to quads. Are counter rotating props needed?
I am ordering the V1 frame, 4 x 28-30's and NTM-28ACC adapters. 4 x Plush 30amp ESC's
Just need to work out what props I need. I hope someone can help.
you need 10 X 4.5 props or 11 X 4.7
the 10 X 4.5 will give more time of flight according to ecalc .ch for this motors.
10X 4.5 props 9329000029 and 9329000027
11 X 4.7 props 9329000032 and 9329000031
for the ECS you can take the TURNIGY Plush 25amp Speed Controller (TR_P25A)
I have four of them and I decided to change bearings. I dismount two of the motors and they have following bearings: inner bore x outer bore x thickness 3x7x3 mm 3x8x4 mm I see that there is a discussion on bearing sizes and they say one bearing is 3x8x3 mm. I am not sure if they use different bearings on others but mine has 3x8x4 bearing on one side. Tips: 1. When mounting new ones, heat the seat with soldering iron a little. Be careful not to damage the coil. 2. Press new bearings only outer bore (ring). 3. Do not throw old bearings. You can dismount it and you can use outer bore to press new bearings. 4. I guess you may use 3x8x3 bearings instead of 3x8x4. Do not press them completely in tothe seat.
Save your money on these. I bought a set for a quad copter. My ESCs have a hard time starting them, you have to buy prop adapters, then those prop adapters wobble and the nuts on two were miss drilled...I'd right a review, but can't for some reason. In all, I'm sorry I bought these...now to figure out what to do with them and find something better...
maybe it was bad lucky, i use 3 of these motor on a tricopter with plush escs and they are running good. It consumes few energy and a lipo 2.2 3S gives more than 10 mins of flight. tricopter, plush escs 30A, 11x47, lipo 3S 2.2A. Also it is very resilient, as i have already crashed a few times and no damage so far to the motor. I use with the prop adapter.
hey vantasstic..you need to start those screws on those prop adapters before you seat it down on the motor..the holes on those prop adapter are very tight tolerances..i know what your talking about but your mistaking..i have so many of these you wouldn't believe me if i told you.and these motors start right up with low timming..that's what you need for your quad ..dont get mad just ask these guys on this forum..dude this motor for 14,99 and a prop adapter for less than 2 dollars thats the best deal in town.if you find somthing better let us know
What size screws will fit this motor? I am currently building a new frame and want to mount the motor directly to it without using the mout from the accessories pack. I have my own mount that I have made but need the screw size, diameter, thread.
For the sizes of standard M32 screws, you can google the internet.
It is a metric M3 size screw.
M3 has a maximum outside dimension of 3 mm.
i have this motor in my slow stick with a 20C 2200mAh 3s lipo and a 25-30a ESC. it works really well and my battery life is 25-30 min. i have put in an order for 2 more motors so i can build more stuff with it. all i am waiting for is them to restock!
6 comments. Reply..
Quadcopter 500mm motor to motor GU344
I got these for my Quadcopter and I used the Blue ESC's 30amp I must say very good motor and smooth, My only gripe is that HobbykingK do not have the Acc Pak with the motor it should not be a separate item.
5 comments. Reply..
This motor is very strong and very smooth.
In the past I have saw many HK motors with moving magnets but this motor are the magnets locked.
The shaft is very hard.
the shaft was to long and I want shorted.
Thats was very hard to do.
I use 2X circlesaws.
750 kv is handy for slow flyers with a lot of torque.
I saw a new MTN motor with the same size but more power (250watt)and KV 1200.
I have already ordered 7 motors for my WiiMultiHexoCoptter.
One bad point is that they have a special mounting system and you must order apart.
I recommedation everyone they need quality with low budget.
5 stars for MTN motors!!!
2 comments. Reply..
I have a small YAK with a 40" wingspan. Weighs 700grams. Can anyone tell me which one of these motors to get for super 3D performance.