75% 12.19 4.16 51 6752 346 69/21 It is a high-performance derivative of the Australian Ford Falcon.. For example, the power to weight ratio of the QQ190RTF can be calculated by taking the max thrust of the QQ 2205 2450 kv motors with HQ5x4x3 props ( 4241.56g ) and divide by the total weight of the quad with Tattu 4S 1300 mAh 75C battery. Can I assume that almost all 5" mini quad frames have the same mounting pattern and that any 22xx or 23xx motor will fit any 5" frame? Also, a lot of frames I'm looking at don't even specify the motor mount pattern. This is more than double the power needed for acrobatic flight and can make for a truly awesome flying experience. I really appreciate the advice. Motors can also make up a big part of that, so keep that in mind as well. Also, the entire article is implicitly written with the assumption of a 4S battery. I assume it means “wide open throttle”. Let me know if that answers your questions. If you spin a motor, it will generate 1V at a certain RPM. I am allowing 50% friction factor for movements of propellers and rolling of the wheels. The size of the motor can give you an idea about what size drone you will use with the motor. 4S (16.4V) This means that when a motor spins, it creates back-emf that can be measured as voltage. Crazepony 4pcs DX2205 2300KV FPV Brushless Motor 2CW 2CCW 2-4S Lipo Racing Edition Purple for QAV210 X220 QAV250 FPV Racing Drone (Purple) 4.2 out of 5 stars 69. 25% 16.38 1.19 20 4260 139 72/22 3S (12.3V) 75% 16.16 6.45 104 8541 570 72/22 100% 11.95 10.07 120 7877 1034 77/25 100% 11.86 9.90 118 7821 780 79/26 100% 16.14 6.76 109 12187 541 71/22 A good rule of thumb for a quadcopter is to aim for a 4:1 power to weight ratio. After some research I have the following components: Frame 330mm: (160g) For the purposes of this post, we will try to use 5x4x3 because we are theoretically building a freestyle flyer. „Clearly if you baby the quad it will be fine“ like krohsis wrote; limit the motor_output of the 2600kv motors, scale to less kv would prevent befor waisting energy, high ampdraw... next to the throttle expo kaity wrote. Throttle Volts Amps Watts RPM Thrust(g) Winding Temp (F/C) A lighter motor will most likely feel more precise in the air, and pids might be easier to tune. It is one of the smoothest flyers I have now. The Kv rating of a motor. But my battery is much bigger, at 2200mah, and I keep my amp draw below 10 amps during flight. Props can greatly effect performance of your drone, and some props are much better suited to specific builds than others. someone has asked me to built a drone having payload of 3kg and endurance in the air is15 minute . Throttle Volts Amps Watts RPM Thrust(g) Winding Temp (F/C) 100% 12.01 8.06 97 8503 553 71/22 You simply need to determine the current draw from the motor/prop combo and then make sure that your ESC and battery can handle the current demand of the combo. Throttle Volts Amps Watts RPM Thrust(g) Winding Temp (F/C) You need to find a chart of a given motor’s Volts/rpm/Watts to make proper decisions about whether or not a motor is a good choice for your mulitrotor build. 2204 and 2205 motors are great choices for ultralight racing drones (<250g dry weight without battery), but these motors generally don’t have the torque to spin heavy props or handle heavy builds. Stator size effects the torque output, and larger stators tend to produce more torque, whereas smaller stators produce less.”. last, but not least, use the data that you find to make sure that you choose an ESC that can handle the current demand that your motor/prop combination will be requiring at WOT. 50% 16.27 3.38 55 5861 422 81/27 The Special Edition includes the TBS Immortal-T antenna! So a larger diameter motor for more torque/lower rpm to throw bigger props, and a longer more narrow motor for smaller higher rpm props, but both motors the same weight reaching the same total output in watts before becoming saturated. So what can we learn from this? My design is to convert generated rotational momentum into some versatile linear propulsion using two sets of rotational masses within closed paths that are exact mirror images and their movements are synchronized mirror images. SPECIFICATIONS Weight: 0.5g (receiver only) Size: 11mm x 18mm Requires: Firmware V2.24 INCLUDES 1x TBS Crossfire Nano Receiver 1x TBS Immortal-T Antenna 1x Spare shrink tube 6x 30awg silicon connection wires (2 black, 2 red, 1 white, 1 yellow) 1 x pin header 1x4 Throttle Volts Amps Watts RPM Thrust(g) Winding Temp (F/C) I made a mistake though in the motor selection. Throttle Volts Amps Watts RPM Thrust(g) Winding Temp (F/C) 50% 16.34 2.97 49 6162 357 78/26 25% 12.33 0.98 12 3246 88 74/23 Its just a carrier drone with minimum maneuverability, just a normal flight from point A to Point B and come back. This is up to you, the builder to figure out. Im a bit confused about the Torque thing. For example a common 2205 motor has a 22mm diameter stator that is 5mm high. A Series Dynamical Modular. 25% 12.32 0.86 11 3392 77 68/20 Frame size also limits the prop size and each prop requires a different motor to spin it and generate the thrust efficiently. So ideally, you should be able to choose a motor that is efficient, doesn’t draw too many amps, isn’t too heavy, and has the power to get the job done. I like how you say that you need to consider your frame type when you are choosing a drone. 75% 16.21 6.18 100 8537 636 84/29 100% 12.05 9.18 111 8220 701 78/26 How we can select the component to make quadracopter . FPV Cycle changed the game with this truly unique 2203 sized motor. The main advantages of Li-Ion over Pb (lead acid) batteries is their compact size, light weight (roughly weighing 1/6 3S (12.3V) 3S (12.3V) My goal is to generate a high level of rotational momentum, and convert that into linear propulsion, neutralize majority and end up with some measurable net linear propulsion, no matter how small the net propulsion is. Both motors will work, the 2206 are an amazing motor, and so are the 2205s,  partially due to the strong magnets. 75% 12.18 4.14 50 6741 394 76/24 Motor size The size is expressed by four numbers, the first two detailing the stator diameter and the second two relating to the stator height. Maybe you like the look of the ZMX Fusion Purple top 2205-2300kv motors. No, 40amp escs can handle more current than 20amp eacs, but the amount of current that your setup will draw depends on motor and prop combination more than anything else. So if you are going to keep your flights in around a mile or so the battery size you mention will probably be fine with a light throttle finger. The resulting RPM is the Kv of that motor. “A lighter motor will most likely feel more precise in the air, and pids might be easier to tune.”, And than under the point “Torque” you wrote: This props is perfect for freestyle flying, but isn’t quite the fastest prop out there, and a steep pitched, 5×4.5 bullnose prop allowed us to reach higher top speeds than the 5x4x3. Comment: OK for continuous use, Prop: iFlight iCF 9443 Carbon Fiber DJI Hub 8mm Hole On the one hand, the idea is physics based and should be able to formulate all movements into some computer simulated model, which seems as an easy, reliable and fast method. 75% 16.08 7.63 123 7812 757 81/27 Then under "Recommended Components" it has "Motor Size 2306/2450kv". I have a project that has similarities to operation of 2 identical but reverse rotation motors/propellers that are commonly used for drones. KV can help us understand the current requirements of a motor to produce a certain amount of torque…. Generally speaking, from 180 mm to 250 mm is most popular frames, more bigger one is from 280 mm to 800 mm even more. Thanks everyone for the words of encouragement. By properly sizing your motor you will get longer flight times, longer equipment times, less wear and tear, and lower temperatures. The idea is to measure thrust of different propellers. (471.2g). This would give me the best option whilst still providing me with the greatest torque. to think about KV, let’s think about the basics…. Once this priority has been made, finding your perfect motor should be easy. When I realized that 2207-2400kv motors were wholly wrong for what I was after, I shifted to 2305-1900kv motors and found a sort of happy place...though far from perfect. 100% 15.81 13.94 220 9345 1161 106/41 By the way, at the point “Torque & it’s relationship to kv” you wrote that kv is the inverse of kt. It featured an all-black appearance, and a unique front bumper and staggered wheel design at the time considered to be available on future FPV products. Decide your frame type, prop size, flying style, and then use the data, your prop choice, and your personal preferences to determine the best motor for your build. Looking at all-out thrust is a good thing to do, but it doesn’t mean everything. your article does not help. Comment: OK for continuous use, Motor: DJI E300 (2212/920Kv) – Page 3 of 4, Prop: iFlight iCF 9443 Carbon Fiber DJI Hub Self Locking Torque can be calculated using current and kt, the inverse of kv. I would run a gemfan bullnose with the 2206 because the efficiency approaches 3.3 and the current drops to around 26A at full throttle. You are right, it seems contradictory, but this means that is is best to use a light-weight motor that also has high torque. 50% 16.27 3.32 54 5828 411 79/26 I’d like to know how to estimate the amps required at WOT on 5s for a given set of props and motor KV. So as Kv goes up, Kt goes down. Can you find any data-sheets on your hardware and post the links? The resistance of thin high-power wire will force the battery to … The large motor will most likely turn out to be more powerful than the small one. Frame Size: Prop Size: Motor Size: KV: 150mm or smaller: 3″ or smaller: 1306 or smaller: 3000KV or higher: 180mm: 4″ 1806: 2600KV: 210mm: 5″ 2204-2206: 2300KV-2600KV: 250mm: 6″ 2204-2208: 2000KV-2300KV: 350mm: 7″ 2208: 1600KV: 450mm: 8″, 9″, 10″ 2212 or larger: 1000KV or lower Drone Arm Set -Standard -X-Agricultural -Coaxial; ALPHA Optimal Pack. 0505 (1) 0603 (3) 0605 (1) 0605 (2) 0703 (4) 0802 (8) 0807 (1) 0905 (1) Propellers. Some pilots run the thinnest motor wire they can to minimise weight. 50% 12.30 2.30 28 4644 262 75/24 We went looking for some info on DJI’s FPV goggles. Replaces motor mount cross and brings motor further back. FPV. 75% 16.27 3.57 58 9701 318 69/21 Propellers 8045 The recommended motor FPV wire size is 20awg to 18awg. An all-out drag racer is going to have a different ideal motor than a freestyle quad. Frame Size: Prop Size: Motor Size: Motor KV: Lipo battery: 120 mm or smaller: 3 inch: 1104 – 1105: 4000KV+ 80-800mAh 1s/2s: 150 mm – 160 mm: 3-4 inch: 1306 – 1407: 3000KV+ 600-900mAh 2s/3s: 180 mm: 4 inch: 1806 – 2204: 2600KV+ 1000-1300mAh 3s/4s: 210 mm: 5 inch: 2204 – 2206: 2300KV-2700KV: 1000-1300mAh 3s/4s: 250 mm: 6 inch: 2204 – 2208: 2000KV-2300KV The dimensions are 184×122×110 mm. Agility: 5045 & 5045 bullnose or 5" triblades, with a mid-large high kv motor and a small 1300-1500mah high C lipo. If you still have questions, please post them at ask.quadquestions.com so that we can help you choose the best motor for your next multi-rotor build. Many people think that the ESC and battery ratings mean that the motor needs to handle the same current ratings, but this is wrong. Power distribution board Blusky with XT60 (10g) What is of the highest priority is that the 2 motors are identical but turn the 2 propellers accurately in opposite directions as synchronized mirror images, at various speeds. 4S (16.4V) Any help would be great Under the point “Weight” you wrote: High kv motors require more current than lower kv motors to produce a certain amount of torque. i need help in determining the maximum weight a drone can carry lift it’s RPM/V; I’ll be constructing a drone that has a robotic arm. Without going into too much detail, all that you really need to know is that the torque constant Kt is the inverse of Kv. So a 450 quad has 450mm between motors… I am making a quad-copter having a weight of 15 kg and want to fly it for about 10 kms. The ZMX Fusion 2205-2300kv  has been tested in numerous places, and it’s data can be seen here: check out the miniquadtestbench.com for more data. Flight controller is running BF 4.1.2 with RPM filtering enabled. 4S (16.4V) So a motor with higher torque will be easier to tune, and will make the quad feel more precise in the air. The most significant indicator of torque is stator size, so in some ways this factor is a spectrum between response times and motor weight. Tattu 2305 2450KV motors are mainly suitable for 180-250mm quadcopter frame, the compatible propeller sizes are 5040 / 5045 two-blade or three-blade propeller, they made for FPV … 25% 16.43 1.24 20 4027 135 82/28 I need to have 20 to 25 mins air time. 15mm Extended Prop Shaft allows virtually any prop with 5mm hole. Really appreciate the advice. 100% 12.16 4.46 54 9674 323 70/21 The F6 is based on the modern-classic Ford Falcon XR6 Turbo sports sedan.The F6 engine is based on XR6T motor, a turbocharged intercooled DOHC 4.0L Inline Six with VCT, but includes: a modified FPV airbox (with … Ideally, you want to try to engineer your quad to efficiently fly, but also generate enough thrust without completely destroying your battery. My project does not involve any flying. If kv goes up, kt goes down.” Many thanks. 50% 12.27 1.92 24 4967 176 70/21 Your email address will not be published. When a magnet is pulled over a copper wire, electricity is created in the form of voltage. 25% 12.33 0.94 12 3508 73 70/21 A small motor and a big motor can have the same Kv constant. Comment: OK for continuous use, Prop: FunToBuyOnline 8045 (white plastic, MR style blade) I have builded test stand for my project at university. Ages: 10 years and up. Throttle Volts Amps Watts RPM Thrust(g) Winding Temp (F/C) Motor 2212 1400kv (192g) Give yourself some room here- so if you are drawing 25A, choose a 30A esc, 18A, choose a 24A esc. Stator size effects the torque output, and larger stators tend to produce more torque, whereas smaller stators produce less. Hi, did you get an answer to your message. Yes, ” Stator size effects the torque output” -however, the recent advances in brushless motor technology has led to lighter, higher-torque motors. Champion Co-brand. It combines a small 12x12 footprint with a wide stator to generate a sizable amount of thrust compared to most micro motors. The main work of any motor would be to rotate the modified and heavier blades which weigh 5 g/cm within the 20 cm length for a total of 300 g for 3 blades plus 3 of 75 g each of the wheels at the outer end of each blade for 225 g for 3 blades, for a total of 525 g per propeller and 1050 g for the 2 propellers. Current, torque and Kv are all related, Lower Kv motors require less current to spin heavy props and therefore have more torque, but loose efficiency at high rpm-Vice-versa, High Kv motors require higher currents to spin heavy props, but can run at high rpm more efficiently. I am happy to realize similarities of movements between my project with those employed for flying drones. Many thanks, you have made my life easy. There are several types of motors available and several Stator/KV combinations available. Motor Stator Size. The highest performing quads have the best power to weight ratios. Now that we know what we should look for, we can start scouring the internet for DATA! 50% 12.32 1.55 19 6244 124 68/20 Find the motor testing data, and let that guide you through the engineering process. Other. My brother is looking for a drone, so he’ll have to choose one that is big enough for the propellers. Advances in mulitoror motor technology such as N52 magnets, curved magnets, tighter clearances, and .15mm stator laminations are allowing smaller motors to generate more and more torque, and is one reason that we have seen a shift in racing drone performance in the last few years. Which motor and blades to buy? We will get you in … 50% 16.31 2.10 34 7858 210 70/21 We here at QQ have found the following to be a good starting guide for sizing stators to propeller size: Selecting the right motor comes down to weight, power, efficiency and torque and the importance of each of these are ultimately determined by your flying style and what you are trying to accomplish with your multi-rotor build. By using this combination, a 1300 75C battery which can handle 97.5A is perfect for this quad. The dimensions of the motor must work to produce maximum output just before the prop tips go supersonic. 100% 15.88 13.58 216 9596 1034 125/52. Comment: OK for continuous use, Prop: iFlight iCF 1038 Carbon Fiber DJI Hub 8mm Hole (TE Style blade) So the Formula “kt = -kv” should be “kt = 1/kv”. If a motor generates 1V of back-emf at 2300 RPM, then we can determine that it is a 2300 kv motor. ESC. 75% 12.08 5.20 63 6283 490 71/22 Did i missunderstood something or is this kind of contradictory? A motor with a larger stator will also be heavier, and will have a slower response time due to the moment of inertia. Without the chart, you will really be shooting in the dark. Freestyle acro flyer? The correct way to think about Kv is to think of it as a motor constant. An often overlooked and very important thing to consider when choosing motors is torque. Thank you guys! It would be good to consider if the fans will fit on your frame as well. A general rule of thumb is to classify your motors first by stator size and … Flying style also plays a role when choosing efficiency. 75% 16.14 7.12 115 8139 652 85/29 Throttle Volts Amps Watts RPM Thrust(g) Winding Temp (F/C) 50% 12.21 2.21 27 4552 255 69/21 can you help me do deside witch motor should I use? The Pro IV provides more thrust, 9% less weight, and increased durabili... View full details 3S (12.3V) The wheels role against a vertical closed rail guard when rotating. I will probably put 2206 and 2305 in the same category due to the similar stator volume. The goal is to build a balanced, well engineered system which compliments your flying style, the purpose of the drone, and the drone size. Flight Controller Naze 32 (10g) So there is no way to use Kv to tell you how powerful your motor is. it seems geared towards quads and i see references to racing but how do i pick a motor that will pick up a small payload (camera and or sensors) and get decent flight times? I need motor witch can handle all kind of propellers at high speed (min propeller size – 3 inches and max propeller size – 9 inches). 100% 12.01 7.88 95 8512 631 94/34 […] How to choose the right size motors & ESCs for your Drone, quadcopter, or Multirotor build […]. Hence the name Frame size = Motor size. You can use the thrust data in tandem with the Amps data to find the best efficiency for your setup. Also the KV of a motor plays an important role in the selection of the motor. 4S (16.4V) I selected a pair of CW and CCW 3-blade 6/4 Master Airscrew propellers for a practical prototype size, used 2 sliding pvc tubes on each blade to allow telescopic movement for extending their length to 20 cm when desired. Key Features: 1K+ Thrust with 4s battery and recommend propeller combo. If the motor were to generate 1V at 1900 RPM, then we would be able to determine that motor to be a 1900 kv motor. Throttle Volts Amps Watts RPM Thrust(g) Winding Temp (F/C) I am building a drone to carry 12kgs. Counterclockwise vs clockwise propnuts for multi rotors make no difference. 75% 16.10 7.46 120 7790 766 80/27 Motors. I am hoping that I might get some expert’s opinion from those using this site. Best motor for fpv racing, strong and powerful motor. was my first build, learned to fly on this frame …, The QQ190 Tank V2 has been replaced by the