Turnigy HeliDrive SK3 Competition Series - 4249-1600kv (500 size heli)
Turnigy SK3 Competition Series motors are the newest addition to our SK3 motor line-up offering the absolute best quality, performance and efficiency for your model on a competition level. Each and every SK3 Competition Series motor is thoroughly inspected and tested to ensure the high efficiency and top performance required for meeting the demands of competition flying.
Turnigy HeliDrive SK3 Competition Series motors are top quality outrunners designed specifically for use in todays high performance helicopter models.
We instructed the engineers to source the best quality magnets, bearings and materials available to them and develop a motor that would not only rival, but surpass the quality of many leading motor manufacturers on the market today.
The result is an efficient, high caliber motor using quality double shielded bearings, sintered Neodymium magnets and a string wound stator ensuring an accurate and consistent winding each and every time.
The Turnigy SK3 motors are suited to modelers who are seeking a top quality brushless motor without compromise.
*Perfect for HK500/Trex 500/Gaui 425/Protos 500 or any other 500 size helicopter.
Specs. Turns: 10T Voltage: 6S Lipoly RPM/V: 1600kv Motor Poles: 14 Internal resistance: 0.013 Ohm Max Loading: 75A Max Power: 1660W Shaft Diameter: 5mm Shaft Length: 21mm Screw Mounting Spacing: 25mm (M3x4) Weight: 219g Motor Plug: 3.5mm Bullet Connector
Yeah I have to agree with Jerry here....WAY to much motor for a 450, that's not to mention the 5mm shaft, 450 motors usually run 3.5mm to 3.7mm...so right off you would need a new pinion with the correct moldus for your mains....Then A 450 motor like the (Turnigy Typhoon 2215H) is running a OD of 28mm and this beast has a OD of 42mm...Sooooo making it fit doesn't really sound possible... Sounds to me like you where looking to try a 6s build and got confused you can use a 1600 or 1700 Kv motor and run a 6s lipo just make sure its for a 450 Like this motor.....(NTM Rotor Drive 450 Series 1700KV PART#....9171000065) Anyway hope this helps.....I Say SEND er on back...OR just buy a 500 to go with the 450 no such thing as to many heli's =)
This is just soo frustrating.I'm trying to help a friend.I built his heli which came with one of these motors and i have no clue.So far i have done timing 5/pwm 12,timing 10/pwm 16,timing 5/pwm 8.It will coutout for a few seconds and come back to life before crashing.
What would be a good timing and freq for this motor.I'm running a trex 500 12t pinion and talon 90 esc.I have read everyone's input and tried 5 different settings.You guys are all over the board here.I wish the ones that dont know **** would just stfu.The heli cuts out in mid flight after 1 minute.Motor is cool as a cucumber.Any INTELLIGENT would be greatly appreciated.Please help.
I would reset the ESC to default and try again. Also make sure you are using a 6S battery that is fully charged and balanced. I would not mess with any setting and see how it turns out. Hope this helps.
Screw holes on this motor easily strip, I recommend installing threaded posts and mounting it with nylock nuts. I used a pair of headless alloy steel screws and red locktite. I put temporary nuts on the front to tighten the threads and hold the screws straight while it set up.
Top bearing is id. 5mm od. 11mm width 5mm. Bottom bearing(s) are id. 5mm od. 8mm width 2.5mm. There are 2 of these bearings stacked in a 5mm deep hole on the bottom of the stator. There is no locktite on these bearings and they can easily be removed with a Trex 500 feathering shaft. Insert the 5mm step into the bearing and gently rock it out of the hole, repeat for the second bearing. Then insert the feathering shaft into the bottom of the stator and put the step into the top bearing. Give the feathering shaft a light rap with a mallet or whatever and the top bearing will pop out.
This Motor on a plane will be hard, as it will be on the rong side of the firewall of the plane. On heli this type of motor is mounded upright, Rather op for a plane motor like the : Turnigy G60 Brushless Outrunner 500kv
Knife Liddle has done a rewind on rcgroups. Since it is a 9 toothe 6 magnet motor (It is NOT a 14 pole motor as stated in the spec...) it is using ABCABCABC as windingtype. He did meassure Kv to be 1650, and the original winding has 6 turns, and uses 11 strands of #26 wire.
Thanks for the credit! Regarding rewindable motors, I have proposed to HK:s Director that they should put up motor kits for sale, since more and more people is rewinding motors. Preferable the SK3 Competition Series, witch seems to be a realy good motor. Maybe time to start a thread in the HK forum..
You need to use this formula to determine the best PWM. PWM = (Voltage x Poles x KV)/20 For this motor: 22.2V x 6 poles x 1600KV / 20 = 10Khz So select 10Khz if your ESC supports it, otherwise use 8KHz
Thanks StevenC for your note. The thing is I'm not sure if the number of poles here corresponds to the 6 pairs of magnets in the can or the 9 coiled segments on the stator. Using the formula would yield PWM values of 10khz or 16khz respectively. On top of that the number of poles according to the specs on this webpage says 14 poles (????) What should it be?
Hi Guys. I've got one of these and got it on my trex 500 clone on a 13T pinion that came stock with the heli. The motor runs smooth for my 6-7 minute 2000-2200 rpm leisurely flight with the YEP 80A ESC (stock settings) here from hobby king but the motor runs almost hot to the touch. I can only keep my finger on it for about a second or two max. ESC is only warm, under 40 deg C. Would I need to adjust the ESC timings to get it to run cooler or is this just the temperature it runs at?
Sorry, this is FALSE! 500 size heli just means that it is the standard size of motors for a 500 Helicopter (e.g. T-Rex 500, HK500...) It has nothing to do with the power, power is written with 1.6kW...
Because HK does not sell any align parts or kits. What makes Align the standard?
All my ESC's have 3,5mm bullets so i am happy with it.
I ordered this motor for my Gaui 425. I shall post a review later on.
I would not use 3.5mm Bullet Connectors on a 1600 Watt Motor... I changed them to 4mm gold. Also the wires are not equivalent to the "high quality" for this motor as HK is saying. The wires are very hard and small, also the shrinking tube around is just a joke... This Motor is superb, but HK, for a "high end" Motor you could have done the wiring thing better...
Sorry, your comment is because the motor description says it's suitable for the Protos. On the recommended 6S there's no gearing combinations for the Protos that will function correctly, unless you want to drop 3 cells. Maybe four would work.
Thats exactly what I meant. On 6s, that is the only serious way on Protos 500, there is no pinion small enough to run with this Kv
so the Protos should be taken off from the notes. By the way, scorpion 3226-900 fit perfectly with only a small modification on frame and with HK helidrive 80A. A really badass heli :-p
The number of poles cant be right - no ESC can handle that.
A short example: A fast ESC like the Turnigy Platinum turn a 2pole motor with max 210000rpm, a 14pole motor with 210000 : 7 = 30000rpm.
But a full charged 6sLipo provides up to 25V x 1600kv = 40000rpm!
The poles number is correct, and you're right about the average ESC, which will top out at around 30,000rpm for this motor. Some of the Suppo motors (of which there are Turnigy re-branded versions) also have a high pole count.
Motor has arrived! Looks nice and shiny from the outside. I count 9 stator poles with rusty areas, and 6 very rusty magnets in the can, fixed with an absolute minimum amount of glue. Next to one magnet is a blue blob of what looks to be epoxy resin. Top bearing OD is 11mm, lower bearing is two tiny 9mm OD bearings stacked. The bearings are reasonable smooth but not prefect notch free. The wires are made from an estimated 10 strands turned together. Stiff motor leads.
Even the box is wrong on the pole count. How silly is that? GJ HK!
I hope it runs well enough to at least get my $30 out of it but 'm getting skeptical.
I would say YES carefully at the moment. It runs smooth after re-balancing the bell. It seems efficient and runs cool. Gaui hurricane 425, 430mmm blades, 2100gr, 6s2800mah, 5 minutes sports flying at 2700rpm,
80% gov with 16/60/19/61 gearing.
Will have to do further tests to see how it holds under aggressive moves, but will upgrade to flybarless control first. will report back later.
Motor failed on 6s in a boat within 5min of run time, Looked like it had a short and caused the wiring to melt and nearly set fire to my boat, packaged nicely, looks and feels good and visually looks good quality.
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I've recieved this motor via a friend who are willingly order this item form Hobbyking, I got it fitted to my Trex/Hk500, running on Turnigy ESC 85Amps, throttle curve 50pcnt Normal, 75pcnt Idle 1 and 79pcnt Idle 2. The power is consistence through out even with sudden pitch change, there are no sign of motor bogged. This motor is very powerful.. try it..to know it..
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This motor looks great but if You open it there is one BIG problem - main stator is not made with the core as one piece like in allmost all outrunners but from two pcs - iron stator with wiring and middle core from AL secured together just with thinny cotter ring which in my case was not connected - I found it between magnets and stator poles causing motor turning allmost impossible. If this happens during flight 100pcnt disaster to all Your machine is guaranteed. I glued these two parts together with epoxy and going to try this motor. Anyway I´ve lost allmost all my confidence to this motor.
Great motor and very efficient too!! Construction seems to be much better than what other from HK are. IÂ´m not using it for competition but it seems very powerful!!
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Stretch Gaui w/475mm bld FBL, getting 1950rpm at 71(governor), 15T/60/19owb, - 12deg pitch pumps, no bogging; high speed sharpest turns-no bogg'g, just warm, 6 mins, sport flyg, seem pretty efficient motor; see how long it last. good so far.