Turnigy Aerodrive SK3 - 2826-1130kv Brushless Outrunner Motor (USA Warehouse)
Turnigy SK3 Motors are the next leap forward in motor quality and design. 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 manufactures 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 quality brushless motor without compromise.
I have a quadcopter with product ID 11879 motors on it (A28M), and one of the shafts came unpressed. I'd like to upgrade to higher quality motors without decreasing performance. Would these be good replacements? Or is there something better?
Also, do these mount the same as my old ones, where you screw them onto the frame at the bottom, away from the end with the shaft sticking out?
So I just bought one of these little motors and I must say that quality is really good. I am very pleased with it. I mounted this on these "Electric Motor StandOff Mounts 10mm Small base (5pcs/bag)" sold from Hobby King. I had to modify the mount slightly.
GWS EP-8040 Prop, 3 cell Lipo, 7.54 Amps
APC 8x4-E Prop, 3 cell Lipo, 9.49 Amps
You did not say 2s or 3s batt that makes a big difference, 8x6e three blade, 9x6e two blade is a good starting point for 3s. Do not use sf(slow flyer) on a p-51 the controle surfaces (smaller than an arobat parkflyer) need speed to work. If using 2s add several steps of pitch, or a inch to prop diam.
Remember, the rule of thumb is the motor is 10% of the all-up weight (AUW) of the plane. Typically, motors produce about 3.5 watts per gram. My results with SK3 motors is that they are producing more like 5 or more watts per gram for the small ones. This motor will probably lift a 500 gram plane with no sweat.
No, I'm talking about the power available out of the motor. The going rate is about 3.5 watts/gram of motor mass. These motors are putting out more like 5W/gram, maybe even more. But be careful ** you can generate a ton of heat that way.
I was just doing the math and converted the motor at 500 grams for a plane to oz's. I have a yak 54 that weighs a pound and a half and was looking for a smaller motor that would still get into the air.It's all about flight time to me .It has to preform and be efficient. I can only fit a 2200 mah 3s battery into the plane and that is tight.
O can understand these measurements for a 3D application but...
My initial setup was an AX 1100kv motor on a 800g flying wing. Changing to this motor easily doubles my thrust and increased my airspeed by about 10-15mph. This motor produces ~700g of thrust with a 9x5 on 10.7v so at 12.6 you are looking at closer to 900g of thrust. if you want to see testing on this motor go to flybrushless(dot)com select turnigy motors... its all there.
Frame: dji f450 / lipo: 3s 2200 / Props: 1045 GF / esc: 30a /
Really not happy with them - so far I've had a 60pcnt failure rate over a 3 week period. Ordered 5 of them, one had gritty bearings right from the start and the other had a loose connection wire - ordered another. Finally flew them but the felt weak, seemingly lacking in torque, but still good. Then after about 3 hours of accumulative flight time one started to die and also get gritty bearings - after a few more flights it glitched out and I found something was wrong internally which I couldn't fix. Another downfall is that the bearings are basically impossible to remove, they seem glued in. I will switch to a different HK motor.
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I have 8 of these motors on two quads. A couple of them seemed like the bearings were a bit rough at first and they were noisy when running. After a few hours flying time they seem to have smoothed out. Plenty of power using 8x4.7x3 props. I have tried running 10x4.7 two blade and they fly great, but seem a bit warm after an 8 min flight. Quad is more responsive with the 8x4.7 three blade. Hovers at half throttle with both size props. I have some 9x4.7 two blade on the way and will update as to how these work. So far so good. I am running the HK SS Series 18-20 amp ESC and they work fine with this motor. I like the bolt on prop adapter that come with the motors. I have crashed several times with no motor or shaft damage, even though I broke all the blades off the props. I will buy these motors again for my next project. It's going to be real hard to beat these for the price.
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These are nice motors. I bought 3 of them a year ago, and have been happy with all of them. My favourite prop for these has been a BlueBird 9x6E, basically equivalent to the APC 9x6E. (Note that this is NOT the SlowFly prop, although the 9x4.7SF is also decent.) With 2200 mAh, 25C, 3S LiPo and 15A to 18A ESC, one of these will haul 25 oz (700 g) around the sky with authority. Search YouTube for "flying over Rouge Beach" for one example.