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Hey alexw2150, the mount holes are 3mm exactly, and 22mm from hole to hole. Base of mount is 28mm. Inside mount diameter is 11mm and Shaft is 3mm.weight is 27 grams. Motor only , doesn't come with anything, but great price if you have hardware in your partsbox. Will provide more information as soon as i install it. Hope this helps.
Dennis, This motor will easily handle 3S as long as the prop is no larger than 6x3. If the diameter is more than 6in. and the pitch is greater than 3in. the motor bogs down (not good). I have found that it will drive any 5in. or smaller prop with any pitch just fine. However I like the 6x3 on my F-22 and 6x3x3 blade props on my flying saucer UFO.
I ran this in a test with a 7 X 6 prop. I kept the amps at 10, but after a minute the motor started to smoke. The specs. show a 7 X 4 prop not to exceed 14.4 Amps. A 7 X 6 should be a little easier and draw less current than the 7 X 4. I have a 6 X 3 prop, but I don't think this is enough for a bi-wing of 14 oz. I ran a variety of 3 cell Lipos of different draw. Any thoughts? Dennis
Im not an expert, but a 7X6 prop will put more stess on a motor and draw more amps than a 7X4 prop. So your info is backwards. You are essentially bogging down the motor. This motor is tested for 300 to 400 grams, your plane way over exceeds the thrust. A little over is ok, but too much wont do it. On my motor label it specifically says 7 to9 volts and 5" to 6" prop.
Dennis, The 6x3 is a great prop for this motor on a 3S. It also is about the limit this motor should be pushed. Both my carbon Quad and my F-22 are running on 3S and driving 6x3 props. Both have PLENTY of power. F-22 clocked 60mph and I'm not sure how fast my lil quad is but it is scary fast. Have to get someone with a radar gun to clock it sometime.
Yes it has enough thrust. Nutball and ft flyier wheigh next to nothing. The lighter you keep the overall weight, the better it will take crash landings . Learned this the hard way, with my ft bloody wonder. Now I buy high KV motors and use 2 cell lipo. This gives me a hi thrust and keeps wight down and I can use bigger mha lipo . So I get longer flight times. Hope this helps.
Hey, a quick question regarding prop size, I would like to run a 3s but the prop diameter must be less than 5~5.5. what prop would be suatable: 5x3, 5x4.3 or something else like a sports prop. another thing is I tend to ***p it up to full and leave it there for the whole flight so I would want it to stay cool. thanks
Alex, you can easily run a 6 on it and in fact a 6x3 prop is very efficient with this motor. I have this combo on my scratch built F22 that clocks 60mph. Now I have four on my scratch built UFO. All running on 3S. Hope this helps and happy flying!
Thanks ron for such a quick responce but I believe you misread my question. I want to use this motor on the atom mini glider and I cannot have a prop with a diameter of more that 6 because it will not fit. but thankyou for the other useful information, also do you know around how much it draws because I can only fit in small batteries: probably 500 max
thanks, and I will reward credit
Alex, almost any 5 inch prop will work with this motor on 3S. There are many 5x3 props and that would be NO problem for this motor. A 500mAh battery would run at full throttle for I'm guessing 3 minutes!?! I know on my F-22 I get right at 4 min mostly on full throttle with a 3S and a 6x3 prop. But with it being in a glider, It should run for quite a while with good throttle management.
Alex, Thanks for the credit! If you can, post some video of your glider or at least respond with results. It would be cool to see this little screamer on a glider. Because of it's power, I was considering getting a Bixler and using one of these motors on it with 3S battery and 6x3 prop. I know for fact this motor will go full throttle with a 5x5 prop no problem.
AntonioPT, Yes you can.. and with the GWS 6x3x3 blade props you don't even need an adapter. it has a 3mm hole that fits on the shaft and a collar that is slightly smaller that presses on over the prop for a keeper. Four of these work well on my Flying saucer and one on my F-22 (60mph on a 3S battery)
This motor will turn a 7in. prop on 2S, but the pitch should not be more than 4. For better performance, I run a 3S and a 6x3 prop with an 18A ESC. Great power and if you can stay out of the throttle, long run time. Full throttle, on a 1000mAh battery is just under 4min. Hope this helps and Happy flying.
Why doesn't HK list this as a 3S motor? If you want an inexpensive, fast plane, use this motor with an 18A ESC and a 6x3 prop (no larger or faster pitch). You will get a combo that can propel a 10oz F-22 to 60mph. neither the motor or the ESC even get warm with a 1000mAh 3S 40C battery.
For maximum prop, I do not know. but now I use a prop 7x3SF inherited from the RC. maybe you can help give me a little information to modify the motor, ESC and battery for my rc plane? thank you before,
I have an RC airplane wing dragon sportster 4ch specifically:
. Wingspan 1180MM
. LENGTH 860MM
. HEAVY 650GR
. MOTOR BRUSH 480.
And I have a 2s 20c lipo battery 1000mAh.
I want to replace the motor with brushless motors FC 28-05 Brushless Outrunner 2840Kv and Hobbyking SS Series 18-20A ESC (card programmable). Is it possible to fly Rc using 2s 20c lipo battery 1000mAh?? whether there are constraints on when flying or when fly?? (Sorry for my bad English and thanks before)
It should work as long as you use a 7x3 prop. Don't use a faster pitch than that. You could use a 3S with the same ESC setup and a 6x3 sport prop and get some good results but with a plane that heavy, it's doubtful if you will have any vertical flight. Hope this helps and Happy flying!
I've one of this motors with this setup:
1000mh 2s bat.
...and I've got two big problems:
1º* Even programming ESC (with programming card)for BRAKE OFF it always stays ON tryed programing by sound and it's the same...always on.
2º* It's terrible unbanlanced! First I was thingking it was shaft problens but shaft is OK it's the base, it vibrates like she was loosen. I double check screws and all are real tighten.
At really low throttle it spins OK, then with a little more throttle base goes to de right, adding more power goes again to the left...and so one. After mid throttle its stays terrible unbalance with lost of vibration and noise, it's seems it will tear plane apart and we can see the problem it's on base.
There's any thing I can do to solve this problens???
(Sorry for my bad English)
Love these little screamers. Great with 3S as long as you don't go over 6x3 props. With 6x3 it will come down cool to the touch and will drive a 10oz. 24inch WS F-22 at 60mph. The climb rate is FAST! Would probably be a good choice for a floater jet too.
I was going to make a micro screamer Xcopter with some of these, but a friend gave me 4 stryker motors and ESCs. When I get around to it, I'm building a Flying Saucer UFO with them and some depron. I still may build a micro Xcopter but it's not at the top of my list right now. Ha ha! Happy flying!
I dont think so, this motor its for very light planes with 2s battery. I use one motore like this in my parkjet mkII with 2s lipo and 6x4 prop as 12a esc. 3s will burn this motor with prop bigger than 5''
Yes you can use this motor with a 3S as long as you don't go over 6X3.5 prop. I used a 6x3 with great results. Both motor and the 18A ESC were cool at the end of every flight. With a 6x3.5 the motor got warm but not bad. Here is a video of my F-22 with this motor and a 6x3 prop doing 60mph on the maiden flight.
So i am now back from flying and can report amazing results.
With this motor and the stock prop the Plane climbs very nice- not vertical but still very fast- even though i am using my heavy 2200 mAH 3S.
Nothing even gets warm =)
scratchbuilder, If you have a 6x3 prop or can get one, you should try it. This motor will spin up to optimum rpm with this setup on a 3S battery. I believe you will be impressed with the performance too. Also, please award the first person that sufficiently answered you question.
*RonRC: you starting to get anoying!
I know how this works and i awarded already the best answer wich helped me most...
So please could you please stop this, really thats not normal anymore!
damn..this awarding thing starting to make the people freak out..
Antonio Carlos C. With the setup you mention, you are only getting 10oz. of static thrust and 4.6oz. prop stall thrust. Therefore you are only getting 4.6oz. of thrust. If you want to use a 4x4 prop, go to a 3S battery. It will handle it just fine and you will get 10oz. of thrust. Or, go to a bigger prop with a 2S. A minimum of 6x3 up to a 7x4. Hope this helps and happy flying!
Aristidis, Yes you can use a 3S as long as you don't go over a 6 x 3.5 (150mm x 87mm) prop. With a 3S battery, and an 18A ESC, it yields 67oz. (1898g) of static thrust, and 52oz. (1486g) prop stall thrust. This is a pitch speed of 105mph (168kmh). With this setup, the motor does not even get warm. Go bigger on the prop or more on the pitch and things start heating up quickly. This little motor loves to breathe. Hope this helps!
With a 2S, it is OK to use a 7x4 prop which yields 54oz. static thrust, 43oz. prop stall thrust, and has a pitch speed of 80mph. A 6x3 with a 2s yeilds 25oz. static thrust, 23oz. prop stall thrust, and a pitch speed of 60mph. My F-22 profile plane with battery weighs 11oz. With a 6x3 prop, and a 3S it goes 60mph. That is 66% of the pitch speed. With a 2S, a good guess would be less than 40mph. It is very light and unless your plane is much lighter, it should not go much faster than that. Hope this helps.
RCMANIAA, If you want to know if your prop is too fast or to large in diameter with what ever setup you use, try this prop calculator. (leave no spaces and replace (slashes), (dots), and (special characters)).
"http (colon) (slash slash) www (dot) ecalc (dot) ch (slash) motorcalc (underscore) e (dot) htm (question mark) castle"
Hope this helps. If this sufficiently answers your question, please award me.
RCMANIAA, I plugged in the values for this motor on a 2S and 8x5 prop on it and get a pitch speed of 100mph with no issues. It also says you can put a 10x6, however, I wouldn't try this because this small motor does not seem to be up to turning a 10" prop. Hope this helps!
Easiest and in stock... hobbyking PRODUCT ID: GWEMM28TS $1.54 for 2. I haven't used it myself, but should work well with this motor. BEST depends on application, total flying weight, prop size, anticipated thrust, etc.etc.
I would have thought so too, but I ordered this 2 pack, and I found that the 4 holes on the stick mount do not line up with the base of the motor, and since only machine screws (not nuts) are provided with these mounts, I haven't been able to find nuts, even if I carve out the holes on the stick mounts. Thanks for providing the Product ID. Other suggestions?
Hi, I've got one of these motors on order at the moment.If you check the reveiws, it looks like it will burn out pretty quick on 3s. I think 10v is about max. I'll be running 2s, but if that gets boring i might try a 3s LiFe battery (9.9v).
I have two of these motors :) Both are marked "Voltage: 7.4v (2S)" So if it is any possibility to connect 3s battery. I still recommend you use 2S like specifications write. In other way you can burn the motor.
If you put it on 3s the motor wir run, but if you increase the throttle the motor starts screaming and the raises smoke... Don´t try it... I tried it and it is not good.
Maybe you can decrease your full throttle peak at the R/C.
If the esc can handle more than 15A, you should be OK with it!
And I don't think it would fit the motor mount. Tried to search the internet, but i couldn't find any information on it. You should see the dimensions part of the motor, maybe that can help you a little bit!
John, There are only a few issues that typically make this happen.One is good connections soldering. A ***r connection on motor or esc side will cause this without question. The others as mentioned is esc timing and prop size. The esc can be programmed by the instructions for the esc or a card if it's compatible. What HK esc do you have (link)?
All of these little FC-28 motors come with the motor mount. Two set screws hold the motor in the mount. You must use 1/8" plywood to make a mounting surface for the motor mount. I either cut mine out with a hole saw or use a 1 1/8" square piece to mount the motor mount to. Once mounted, place the motor in and tighten the set screws. I like this system.
One of the best motors.. I am using this on my YAK54 foamie. Good pulling power at 6x4 MA
3 comments. Reply..
34 thumbs up!
I ordered 4 of these motors and here are my comments after studying them for a few days.
3 of the 4 motors have slight imbalance issues- however the shafts turn true- it looks to be caused by an excess of the magnet glue on one side of the flux ring. It is enough to keep the motor from performing at maximum capability- and makes an annoying noise and vibration in the plane. I haven't done it yet, but the excess glue could be carefully removed between the magnets with a burr on a dremel.
2 of the 4 motors have a very tight shaft endplay against the bearings- so tight that it causes a bit of drag. I figured that the bearings would loosen up after I ran it a bit and be fine. I flew one of them yesterday on 3S with a 5 X 4.5 prop on a fast flat foamy delta wing plane- after a few minutes of pretty impressive speed, I heard the motor change pitch- I cut the throttle and thought "uh-Oh" and brought her down to check things out. The motor windings were brown & toasted. I was not concerned about throttle management because the motor says on it 2-3S 5-6" props- Hmmmmm. I ran it a considerable amount on my bench and was not seeing it heat up too much- but I was holding it in my gloved fingers with the prop on it- and was not giving it full throttle. I am using the Super simple 20 A ESC I got with the order also- I had the ESC set on medium timing and soft start- otherwise, the starting was rough. I dunno what effects the timing or the slight drag from the shaft endplay could
5 comments. Reply..
30 thumbs up!
I must have got a dud, this thing is stutters all over the place before spinning up (which it does only 50pcnt of the time). Tried with 4 different ESCs, stutters on all of them. I think it is wound wrong so 0 stars for quality control, but 1 star for it's power-to-price ratio when it actually works.