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.
Our QC engineers check and balance each motor before shipping to the HobbyKing.com warehouse.
These motors are of very poor quality, I am on my second set now which have smoked and burnt out on both 4s AND 3s. I am going to have to move to something else as I dont have the time or money to continue using these things!
Sorry to hear of your issues. I built me first multicopter (quad, 9X4.7 props, KK2.0, 2.2Ah 3S) and so far have had no problems. My setup weighs in at 1.45kg with contourHD camera and although I am still learning to fly it I have had not a single problem. I operate mostly between 50-85% throttle and my turnigy plush 25A ESCs get hotter than the motors. I get 8-11 min. flight times. I would like to know how whatever motor you try next works for you. Good luck and thanks for posting
Hi George, you said you rewound a few of these motors? I connected two 4s packs up in series instead of parallel and burnt out one of the motors, do you think rewinding will solve the problem or do I need a new one? If this could fix the motor what wire etc do I need?
Ordered from NL warehouse so I could not give an actual review here, but here it is anyway:
Its a really nice motor for multicopters. I bought four out these for my HK X550 quad with HK F-30 ESCs and 2200 mAh 3S Lipo batteries. AUW of my quad is 1002 g. With 9x4.7 props the quad hovers at 12 amps (Thats only 3 amps per motor!) with plenty of power in reserve. Flight time is 10-11 min with 2200 mAh 3S batteries. Balancing of the motors is almost perfect. I attached my flight controller directly to the frame with screws and hadn't had any problems with vibrations. However, some of bearings sound a bit rough, so remember to order some high quality replacements (3x7x3 and 3x8x4, for example HK product IDs 204561 and 155000087 ). I would also suggest ordering spare Accessory Packs, because the prop adapters are easy to bend and impossible to fix.
Here is how I do it. (check the files tab above for some pictures) Pop off the retaining clip on the bottom of the shaft and pull the can off I use a 22mm deep socket as a receiver. Place the top of the motor inside the socket so it sits on the outer edge of the motors back-plane. then with a small screw driver through the bottom bearing tap out the top bearing. Then flip the motor over and do the same for the lower bearing. tap the new ones in gently with a small hammer use the old bearing to seat the new ones all the way in.
George, I could not find anything helpful in the files tab on replacing the bearings. The retaining clip is so small, I could not get it off. When I use the 3 cell battery, I don't get the bearing noise. When I use the 4 cell battery, the noise and vibration is severe. Thank you for the feedback.
Hey George, you seem to know a lot about this motor. I bought 5 of these motor for my 1.3kg quad on a 3s/4s battery. I put the motor on my test setup and set it on 168W (12.6V 13.3A) with a 10x4.5 prop. But after a minute it started to smoke. What is de maximum continuous allowed current for this motor (it is certainly not 21A).
hello george , I did find all your post enough helpful and read all of them , here is my question for you ,
thanks for your answer from now , I am planing to record video with my gopro and I decided to go with dead cat quadcopter , I would like to ask you this setup is okay with this project ,
NTM2826-1000 ********** x 4
NTM28-ACC ************ x 4
KK2.0 Board **********- x 1
okay here is I would like to ask you that you suggest turnigy plush 25A esc's (TR_P25A) or which one ?
which slicone wire do you prefer ? 10AWG is enough for this setup and how length for all setup ?
do you think that power boards will work with this setup ? there is 2 type of them in hobbyking , but those are only lead 20A for each esc and motor, what do you think about it ? (9171000180) what socket is your favorite for ESC and batteries ? banana plugs ?
and last one * I want use " slow fly 8045" but I know that I need 2 props are Reverse rotation ,
in USA warehouse there is only 2 type of prop.
9329000018 ( 8045SF )
9329000019 (8045R SF)
but those are same color , there is R on their product code also item no's different , is that matter if they are same colored ? does it makes any confusion ?
sorry for a lot question
please add your advises if I forget something to ask
thanks for your patience
Sorry for such a long delay in responding but my job has become very demanding of me recently. I'll try to answer in order. No I don't like the Plush 25a. I've only had one set and They preformed ok at first but after a few flights not so much and one burnt for no apparent reason. It uses the less desirable SILABS processor whereas Mystery 30A BEC Brushless Speed Controller (Blue Series)uses the atmega processor This ESC is also sold as: HobbyKing BlueSeries. As for power baords I do not use them for a lot of reasons I prefer to build my own power harness starting with 10awg at the lipo then 16awg to the ESC. And for connectors I do not use them. I solder my motors to the ESC and the ESC to the battery connector.As for props your question is a bit confusing so I'll just say that using colored props for close in orientation is ok but at a distance of more than 100 feet I would not rely on it. I use LED's. Also the US ware house does not stock the props you need. Order the TGY from the international warehouse.
Yeah Jeff! You betcha! You'd just as soon get someone to hold their breath for 5 days(or two weeks for that matter)then to think you will ever have your intended effect with this post. Here is a tip for you and for anyone who has never ventured into the land of Hobby King (HK). Stay calm and keep in mind that your order is being filled and shipped from, what is still essentially, a third world country by a person making less than a dollar an hour. Point being mistakes are inevitable. Now don't get me wrong I am just a lonely old hobbyist from Southern California but I spent north of 5 grand with HK last year and I got every order delivered to my door step in less than 5 days. The key to this is UPS EXPRESS SHIPPING. In most cases you will be saving gobs of money compared to your LHS so go for the expense of this form of delivery. Also order intelligently to maximize your cost inefficiency by getting the weight of your order as close to the max for the price. If you chose air parcel or China post be prepared for a long wait of a 4 weeks or more. So Jeff stay calm and keep in mind that you did place the order and you chose the cheap shipping option so now you will need to relax and wait . Trust me it will cone eventually.
DO NOT ORDER FROM THIS COMPANY IT'S A COMPLETE SCAM. Almost three weeks for items in stock and they still have not shipped. I've been trying to cancel for over a week. They say the will as soon as they here from the warehouse. Items that are suppose to take 5 days at the most to ship if you decide to cancel within the 5 days will take two weeks to cancel? Or did you just scam me out of my money?
Sorry to here some of you are having so much trouble but I have been a customer for many years and probably have spent close to $3000 at HK. Not once have I and an item not show up or take more than 10-14 days to show up here in Canada. Yes i've had a few things not work properly but i expect there will always be a lemon item from time to time. But when that lemon item only costs $2 compared to $20 from a LHS. I accept the risk.
To claim that HK "never ever send anything to anyone" is WRONG. There are millions of customers around the world that are happy with the Hobby King service. They have single handedly made this hobby more affordable for a lot more people then it used to be.
I have a quad running on these(and 40a esc)weighing 1.4kg without any battery. What will be a good battery and prop combination for long flight time. The frame can take 10,11 inch prop. Was thinking of going 4s setup.
It is a very good motor for the money. Multirotors in particular due to its power to weight ratio and factory balancing After purchasing 20 of these I compare it to some others costing $30-$50. But it does have some idiosyncrasies. It has performance issues when used with Simonk flashed ESC. Leave your ESC firmware stock or flash with Wii. The OEM bearings are of, inconsistent and usually, inferior quality. One should (not always but almost always) expect to have to replace them before first driving them. The bearings sizes are* UPPER 3x7x3mm LOWER 3x8x4mm. I buy mine from AVIDRC-DOT-KOM for $1 each. Also the shafts have become an issue lately. The last set of 4 I received last week, 3 had bent shafts and I've been reading where others have the same happening. I've been modding or changing the shaft from day one so it is no big deal to me and almost any 3mm shaft will work if you have a Dremel. Finally this motor is just ripe for rewinding. I just finished doing 4 of them and it preforms better than new. It is a 3 Pole 15 Turn Delta. ***** DON'T FORGET TO ORDER ***** NTM Prop Drive 28 Series Accessory Pack ***** PRODUCT ID: NTM28-ACC ***** IT IS THE ONLY WAY YOU'LL GET THE (must have) BOLT ON PROP ADAPTER!
Could you give some more information on the bearings ? I just had mine blow out and shatter today. I looked on the website but couldnt find the right ones. If you could provide some more information on that, that would be amazing.
Blow out and shatter? Are you sure that you mean bearings? If so I really do not know what else I can say that my post above doesn't. I give the sizes, where to buy them and how much they cost. If you need some direction in regards to installing the bearings just search you tube there are plenty of videos that will show you how it's done. If you still have any questions try and be a little more specific .
I bought 6 of these motors for my Hex, 4 are pretty smooth & silent when rotated by hand, but remaining 2 require more force to rotate by hand (feel tight & jerky) & bit noisy too. The tip of prop accessories on these two also wobble. Is this shaft or bearing problem?
Hey BklynFlyer, the only diff is there is no shaft sticking out on either side. You purchase the accessories pack and bolt on the prop adapter that comes in that pack. So just to make that clear the shaft runs from the lower bearing up to the end of the can. I uploaded a photo of one in the files section above.
I am using these motors with a kk2 and hk 30a blue esc. I can't seem to figure out why the motors keep beeping! One beep then 1.5sec then another beep etc. all four motors are doing this. Any ideas what's causing this? I've programmed all my esc with the programming card. I tried doing it through the kk2 board but I get a message saying throttle pass through. What does that mean? Help would be much appreciated!!
You need to turn on your transmitter and put the throttle stick to 100% then hold down bottons 1 and 4 on the KK2 then power up the KK2 this is when it will say "throttle pass through" and you will hear a single beep from one or more ESC. after you hear that beep move the throttle stick on the TX to zero % and the ECS will beep again. Then turn the KK2 off and the TX also. Then turn on the TX then the KK2 and it should be good to go.
The only catch to this not working as described is if the throttle on your TX is not orientated correctly. which is to say you need to reverse the throttle channel in the TX before doing the proccedure described above. Good luck.
I tried programming via kk2 and with the programming card. The quad is operational I was hovering today, I just need to tune it a bit. My main concern is the motors beeping. When motors are powered up the beep slowly. The only time they stop, is when I'm on the safe screen (when I go into the menu, beeping starts again), or when board is armed. Is this beeping normal?
To the best of my knowledge it is not an indication of any fault. With revisions to the KK firmware along with ESC firmware modifications it is hard to keep up with the audio alerts coming from the motors. If the board arms correctly and the receiver is displaying correct info on the test screen of the kk2 and ultimately responding as it should in flight i would not be too concerned with it. All i could ad to that is that the kk2 also emits a tone in conjunction with the low battery voltage feature and it can, with its initial alert tone, sound like an ESC. oh and if this has helped please credit me with the best answer. good luck
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.
Compre 3 motores de estos para usar en mi tricopter, y lamentablemente uno ya se quemo. Ahora compre otro para reemplazarlo. Lo estaba utilizando con helices 10x4.7, y con una bateria de 3s y 2200 mha. Es posible que esta helice haya sido demasiado para el motor...??? Ahora, ademas del motor encargue helices 9x6 y una baterí*a de 4s y 2700 mha, espero no tener mas problemas...!!! xxxxxx
Buy 3 engines of these to use in my tricopter, and unfortunately one already burned. Now buy another to replace it. I was using 10x4.7 propellers, and a battery of 3s and 2200 mha. This may have been too propeller engine ...??? Now, besides the charge engine and propeller 9x6 4s battery and 2700 mha, hope not to have more problems ...!
I stand corrected. This is a 3 pole motor with 2 stator arms and 3 magnets per pole. 15 turns Delta 1195kv. I just spent 3 days researching then rewinding 4 of them. And i am very happy with the outcome.
Its a nice motor, with good building quality but has not as much power as other motors in this range. (tested for quadro copters with 3s) I compare it with the two following motors: Turnigy 2213/20 1050kv and Turnigy SK3 2830 1020kv. Weight is 53,8g with 3,5mm gold connectors. I have measured this motor (and the Turnigy 2213/20 and SK3) with my Eagletree gear and uploaded the data to drivecalc. You can use this program to try different props. and find the right configuration. (NTM 2826 - 1000kv - timing med)
The motor has really a very good build quality, but it is not as powerful as the other motors and looses efficiency.
measured for example following combination: Turnigy Platinum 40A ESC; APC SF 10x3,8 Prop.; Voltage: 11,31V; Current: 15,87A; RPM: 7388; thrust: around 860g
2 comments. Reply..
Ordered four of these for a quad and one showed up with warped case. Once again quality control issues pop up... The real issue comes when a customer tries to get something, anything done to fix the problem. Guess thats one of the reasons why prices are so cheap.
great for multi rotor use, I am using with a 37cm quad, on 3s with 8" props, if weight is increased it will fly on 4s to get more thrust. good motor ver versatile. connectors are already soldered on, GREAT JOB 12 connections that i dont have to do :) ...only downside is prop adapters did not come with the motor