1)theirs alot of people out their that know alot more than i do willing to share freely their info.because of them it has made my experience in rc a happy one.so my answers are not credit based(like some,knowledge in rc equals knowing sh#t answers when you see them)i answer truthfully and if i cant answer or if the answer is big than i will direct you to info.
i dont answer things i know nothing about ,at the end of the day you pay for it on my recomendations(if taken)its about making your rc experience a happy 1 too.if you are a newbie knowledge is key (research here and online ,theirs alot of rc forums giving informatiom freely)ie choosing a correct power setup or a setup that is not good for lipo/esc/servos/motor/props ,for power setups these are all connected.this is just 1 example of what a newbie should learn ,in the long run it will save you time and money.2)click on my name ,it is info im willing to share(not much)good luck happy flying.
just to add get online and search customs(import,export)for your country namely what is considered a gift before you have to pay taxes etc on it and what you can import into your country without your package being held in customs for some reason.it saves time and money.
1)i dont have a watt meter ,but went with recommended prop/lipos static tests done and dont have any probs to date with motor.bh7 in reveiws for this motor gave similar static tests results to what i use and would go with his results you will find your amswer their.2)perth western australia.
hey Oliver, i dont have a watt meter,but have use recommended static test data from 2 different people that posted reveiws with similar results.one has posted in reveiws for this motor bh77.on a 3s i have had no problems with selected prop 4.5x4.5 .
Am I doing something wrong here?? I've been through 2 of these motors, and had both pop off the motor mounts? Using a 4.75x4.75 prop as well... tried tightening the mount screws with a micro hex key, but no luck, happened twice now...
hey Alex,its all about trying things that work.i do 2 things when buying motors,buy extra grub screws.if removing too many times the hexs gets rounded.ive since found out that you can use just normal screw as long it fits the thread(3mm dia)2)place a dab of semi-hard locktight(wifes nail polish)on screw before tightening(on end of screw as will).make sure its semi-hard and not hard so if you have to undo it it wont be rock solid.vibration can undo screws good luck.
Thanks for the reply Dajaraja. I have since put CA glue into where the motor shaft connects with the base / mounting plate. That problem was solved. THEN the bell starts wobbling / grinding and heating up quite hot. Dont think its a bent shaft, as when I pull the bell away from the base, it clicks, and momentarily spins well and freely, until it clicks back, then wobbles and spins with a great deal of resistance. Any thoughts?
theirs a number of things,did this happen before you glued,check for frictions between shaft/bell/base.the motorshaft sticks out (3mm)from base (did you drill hole in wall mount for this )do you ballance props.bearings. ask question on hk forum or i can pm(on this site) you on (troubleshooting)i would be doing either way tomuch to explain here ill see you then.
update ,after a crash while pulling another motor apart the motor was doing similar thing to your motor .the grinding was due to the bell hitting the stator i moved everything up (tightened everything togeather)enough so that it could turn but not stress bearings .i have pulled this motor apart (spare)and was wondering if you havent moved the bell off the shaft ,have you put everthing back togeather namely the little copper spacers at the end of shaft when you put clip back on.sorry alex for my first reply but theirs alot of things that can effect a motor.
when i brought some of these motors a couple of years ago(epo hk parkjet) i dont remember them being for 2s only. anyway i dont have a watt meter to test prop/amps etc but went with recomendation from ron rc (prop/amps)i have had no problems running this motor on 3s(4.5x4.5/22amps)2s(5x5/16amps).also look in reveiws for this motor and BH77 gives very similar prop/amps to ron rc.sorry to read about your motor but yes i think you overproped it with your current setup. (24amps)
" This motor is only rated for a 2s (7.4v) pack,you have burnt it out by putting it on 3s"
If this is true, why is the motor supplied with the EPO parkjet stating a 800mah 3s lipo is required?
I have flown my parket with this motor on 1000mah 2s and it's very tail heavy with a metal motor mount (and using the supplied plastic mount isn't an option)...A 800mah 3s balances the model perfectly and gives it decent performance.
So if this motor isn't rated for 3s it's not fit for purpose and should not be supplied with the parkjet. However, I have had no problems with mine so far : )
look up dons rc reveiw( hk parkjet) for 3s setup
he gives info on amps/props etc.i have this setup for my parkjet(10003s, hk30amp,4.5prop)all up weight 300g hk fellowed his recomendations for the pnf hk parkjet.happy flying
I'm using this motor in a wing-wing z-84 with about 7min WOT flight time on 1800mah 3S lipo, with 4.75x4.75 prop. I want longer flight times! I have read that larger and slower turning props are most efficient, and per the threads below 6x4 have been used. Can anyone comment on their experience with this motor and larger props? Is there any table or chart online that graphs motor/prop amp draw?
Not sure about a table, but I am using this motor with a 6x4 and 6x5 props on a scratch built mini Predator on 2s li-po and I get 400 grams of thrust. On the thrust stand the motor drew 18amps on WOT with the 6x5 prop and made 450 grams of thrust.
I just also bought this motor for use on a Wing Wing Z-84. I have the standard motor mount but the screws that secured the original motor dont seems to screw into this motor. They seem the right size but the holes dont seem to have thread.
Do you just work it into the hole make the thread as you go along, or do I need some different screw\nut combination?
You don't need separate motor mount. This motor comes with a motor mount, propeller saver and rubber band. You would want to get some other tighter rubber bands, because the one that comes with this motor is a bit loose.
This motor should drive a 6x3 prop on 3S battery nicely with no issues and have a prop stall thrust of 58oz. With a 4.1x4.1 on a 4S Neither the static thrust or prop stall thrust are this high (40oz. and 29oz.). So, I would imagine it would be able to handle it with no problems. Still, as I do on anything that is not rated for what I use it for, I bench test it in my garage to make sure I don't have any surprises. Hope this helps and happy flying!
I have managed to burn out 3 of these motors now when running on 3S lipo's and props bigger than 4.1x4.1. On 2S I have used 6x4, 5.5x4 and 5x5 with the 5x5 giving the best overall performance.
I do have a home made Coreflute plane 34" width x 30" length (triangle similar to mugi evo ****mugi.*****) Using this motor, 3S lipo 1800mAH, 40A Esc and 5.5x4 prop master airscrew. There is not nearly enough thrust to hold above about 60 degree climb (stalls and drops). Plenty of speed for level flying al
Hi all, I'm planning on building a hyper fast aerobatic quad. My original plan was to order four FC28-05 2840kv motors but they are out of stock. I know about and trust those motors for using a 6x3x3 prop, 18A ESC, and a 3S battery. According to the prop calculator I use, this motor will do fine, but I want to know if anyone has used a 6x3x3 prop with these?
I am running them with 18Amps plush, 6x3 doublebladed prop and 3S. Doing good lifting 900g (gopro camera, video Tx and osd are onboard) at half throttle. ESCs getting around 45-50 celsius when flying indor. Amps consumption at half throttle with such config aroung 8-9 Amps per ESC/motor. Regards
Sounds fantastic! I don't intend to be putting a load on this bird.. strictly for aerobatics and speed. My big Xcopter is what I use for video, but I have it setup and built for video (slow and easy) This one I want to have some serious fun with.. Ha ha!
I'm still waiting on parts for my bigger Xcopter, and my PCB frame is days away from getting here. I am in a quandary though about how I want to build my big quad... I have 10mm carbon fiber square stock, but I'm wondering if I should go with towel bars again. They are quite rigid and I'm sure will be able to lift the load I want to lift. The CF has some flex but is pretty rigid. What to do? Ha ha ha!
3s works fine with 4.5x4.5 I have run a 5x5 on a parkjet and with WOT for 5-10 seconds, the motor is slightly warm, but when in flight the airflow helps cool it. Incredible thrust for a motor this light. Thanks
Like to echo CAN's comments, there is no spec for 3C, actually the one listed is thrust throughput on 2C, not max ratings. Whom burns this moter must be unknowningly over rated. Ever this little motor is a power house, we have to understand that 20A x 11V is 220W, without proper air flow it's thin wires will be very hot soon and low on efficiency. On the safe side I will only drive this motor on 4.1x4.1 (up to 18A) on 3C. Be carefull on 4.5x4.5 or 4.75x4.75!
Kostas, I'm not sure what size prop you can get away with on your bird, but if you can possibly put a 6x3 on it, This motor should sing sweet tunes for you. It may not pull vertical, but it will push at a prop speed of 95mph and 58oz. of thrust. Hope this helps!
even on 2 cells it will burn out with that big a prop on 3 cell max prop is 5x5 and on 2 you can use 6x4 .The kv is too high.For 8x3 you should buy the 1300 kv version of the same motor.Please reward if you find my answer usefull.
I am running this motor on 2S 5x5 prop. I would not reccomend you try 3S since this motor is not so powerfull and will not stand the current load on 3S. Still you can try 8x3 prop on 2S battery. This prop is just very slightly bigger than 5x5 so I am sure it should be fine. 5x5, 6x4 and 7x3 are basically equivalent props.
s, the tip speed would be too fast with this motor. a 6x3.5 would be optimal but are sometimes hard to find. The 6x3 are fairly common and produce great results with 58oz. thrust and a pitch speed of 95mph. If you want to run an 8x3 at max capacity, you should look at a 2400kv motor. With that you will want something that can handle at least 20A. Hope this helps!
This motor is small for that jet.This is good for jets weighing a little less or equal to 300 g like the hobbyking parkjet which weighs about 200g .you will need and esc with 25 amps and 5x5 prop and a 3 cell btry 800mah max .Please reward if you find my answer useful.
actually both 6x4 and 5x5 are ok depends on your application i have used both 6x4 will give good climb but 5x5 will giv more speed at lesser climb rate.If you found my answer useful please reward thanks.
dear jjfawks the small screws that come with servos are good enough for mounting this motor.Look for screws with shoulders on the hardware section .If you find my answer usefull please click on reward . thanks
This is a very interesting motor and it differs from the other KV's available in two key ways. First, it uses some very fine angel hair in a multri strand arrangement instead of using one solid wire like they do in the other versions. The other key difference is much bigger though - this motor is wound dLRK!
It runs very smooth with the OEMRC 12 amp ESC with an APC 6x4 prop with a 2S Looong Max 1000mAh battery. I got 398 grams of thrust with this setup but I don't currently have a way to measure the amp draw but I can say for sure it was over 10 amps. My guess is somewhere between 13 and 15 amps.
Unfortunately I think this prop is outside of this wind's efficiency range and you would probably do well to limit it to a 5 inch prop if you're going to be flying at WOT a lot.
Still, this is a fabulous motor and a very good buy. The factory that builds this motor has come a long way in terms of build quality and I look forward to what they might deliver in the future. 5 Stars!
2 comments. Reply..
27 thumbs up!
24g HXT 3000kV actual measured data 4.1x4.1 APC 24,000 RPM 1800mAh Zippy-R 3S1P LiPo 10.32V (Vmin) 188W sustained 30 sec. 17.8A peak 93 mph pitch speed
Very nice motor but 40,000plus RPM is BS with this prop in the review above.
No comments. Reply..
21 thumbs up!
some testing about this incredible guy ! 4,1x4,1 2s/9,28A/70W 3s/17A/189W 4,5x4,1 2s/11A/84W 3s/20A/225W 4,5x4,5 2s/12A/93W 3s/22A/238W 4,7x4,25 2s/12A/89W 3s/22A/241W 4,75x4,75 2s/13,6A/102W 3s/24A/262W 4,75x5,50 2s/15,8A/116W 5x5 2s/14,8A/110W 5x5 Large 2s/16,7A/122W 5,1x4,5 Large 2s/17,8A/130W 5,25x4,75 2s/17A/124W 5,25x6,25 2s/20,7A/148W 5,5x4,5 2s/16,7A/122W 6x4 2s/20A/156W 6x5 2s/19A/150W 6x5,5 2s/23A/180W
1 comment. Reply..
7 thumbs up!
Incredible motor! Using it for a 300g su-27 3s800mah GWS5x4,3 21A and it is COLD to touch. Good speed. If it is 3D you are up to, use the 1500kv motor
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DAVID M NORTH
7 thumbs up!
10T multistrand trash wire, but it is dLRK so it has the 14-mag setup and is very easy to rewind into something useful. As shipped it's okay with a six or five-inch prop 3S. Check your heating!