I’d like to know how to estimate the amps required at WOT on 5s for a given set of props and motor KV. Throttle Volts Amps Watts RPM Thrust(g) Winding Temp (F/C) 2300-2500kv motors provide awesome performance and allow for use of 4S, but neither of those things are conducive to true range. There is a lot of hype that is influencing people to build quads using strange component combinations, and the best quad is one that uses components that are well engineered to work together. 25% 16.43 1.20 20 4202 139 78/26 A couple things, a 2600kv motor isn't the best for LR, but not the end of the world. Get it as soon as Tue, Dec 8. Many people have asked me how to properly size your motors to your quad. Summary Simple motor Spacer for AR Wing and other FPV Wings. A higher KV motor can tend to be more efficient in the high rpm ranges, but at the expense of torque. Many thanks. If you haven't bought the batts yet, and don't want up to 2200 size, maybe try 1800mah. 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. 3 Lock nuts and 2 sets of motor … 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. For the 2011 Melbourne motor show, FPV displayed the "FLPV concept" (commonly known as the "Black Edition"), based on the just released supercharged 335 kW (449 hp) GT series. 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? AirGear Combo Set. for example how much weight can a 250mm drone frame size, 2300KV Brushless Motors and 30A Esc can lift? Looking at all-out thrust is a good thing to do, but it doesn’t mean everything. When a motor is supplied with a voltage, it spins. The general idea that you want to adhere to is ordering the following weight efficiency power, and torque in terms of priority for your individual build and flying style. Comment: OK for continuous use, Prop: FunToBuyOnline 8045 (white plastic, MR style blade) 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. i was told the motors i got with the kit (2212-kv920) were battery eaters and when i got them running i dont like the sound of them and figure i will just upgrade. 100% 15.88 13.58 216 9596 1034 125/52. Maybe you like the look of the ZMX Fusion Purple top 2205-2300kv motors. I need motor witch can handle all kind of propellers at high speed (min propeller size – 3 inches and max propeller size – 9 inches). Prop size ect 25% 12.42 0.93 12 3375 78 71/22 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 Its just a carrier drone with minimum maneuverability, just a normal flight from point A to Point B and come back. Comment: 85% throttle (770g) OK for continuous use, 100% throttle OK for 5 second bursts, Prop: iFlight iCF 9443 Carbon Fiber DJI Hub 8mm Hole If we look at the same graph, but at 50% throttle, we see that the efficiency goes way up. My 6 inch Rooter has 2600 motors and I can get around 3 miles out with it, with 5 inch blades. 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 … Comment: OK for continuous use, Prop: iFlight iCF 8055 Carbon Fiber DJI Hub (TE Style blade) We went looking for some info on DJI’s FPV goggles. So if you choose a QQ190 for instance, you could run 5″, or 4″ props, but for this example, we will choose to run 5″ props not only because this is what the QQ190 was designed to use, but also because this is the largest size that we will be running on our build. Torque can be calculated using current and kt, the inverse of kv. 100% 12.01 8.06 97 8503 553 71/22 In theory, it makes sense to use a CCW motor on all of your right hand motors, but in practice, a locknut does a fine job of keeping your prop tight regardless of rotation. 100% 11.96 9.08 109 8088 637 87/31 Once this priority has been made, finding your perfect motor should be easy. Remember, A good pnunomic to remember is Wept- the guys that followed the hype train and didn’t properly engineer their quads wept because they cooked their batteries. The Pro IV provides more thrust, 9% less weight, and increased durabili... View full details The Special Edition includes the TBS Immortal-T antenna! 75% 12.25 4.65 57 6661 428 74/23 I’m thinking along with your specs. Two complaints, you use “WOT” without defining it. 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. 4S and up ofc. What it really comes down to is personal preference. Flying style also plays a role when choosing efficiency. 75% 12.15 4.80 58 6481 419 76/24 Looking at the data, we can see that this motor with the HQ5x4x3 averages 1151g, pulls 25.48A, and has an efficiency factor of 3.1. 75% 12.19 4.16 51 6752 346 69/21 A small motor and a big motor can have the same Kv constant. Typical FPV racing miniquads will use 1806 or 2204 motors, whereas larger quadcopters that are designed to carry a gopro camera will typically be around the 2212 size. 50% 12.27 1.93 24 4959 192 72/22 To figure your power to weight ratio, you will want to calculate the max static output of the motors divided by the weight of the quad. Throttle Volts Amps Watts RPM Thrust(g) Winding Temp (F/C) 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. 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. 25% 16.43 1.24 20 4027 135 82/28 The ZMR 250, back when it came out, was a class called “miniquad” - with the larger 450 size crafts being just “quadcopters” Frame Size numbers, by the way, mean how much diagonal distance there is from one motor to the other. If we are knowing ESC current rating then how to find the motor current rating for quadrotor. My brother is looking for a drone, so he’ll have to choose one that is big enough for the propellers. How we can select the component to make quadracopter . Manned Aircraft. I made a mistake though in the motor selection. The idea is to measure thrust of different propellers. We have even used locknuts on 3D setups without issue. At 50% throttle the motors both look good in terms of efficiency and power consumption. This is where things get a little bit complicated. But my battery is much bigger, at 2200mah, and I keep my amp draw below 10 amps during flight. 1 man, 105 kgs ready to fly. Im a bit confused about the Torque thing. The Kv rating of a motor. Robot Dynamics. G60 Brushless Motor for 60 Class Airplanes The largest FPV & Radio Control Airplane Super Store in the State of Georgia G60 Brushless Motor for 60 Class Airplanes Hobby Shop JavaScript seems to be disabled in your browser. Using the same prop, the 2206 motor takes a lot more current at WOT because of the larger stator. The dimensions are 184×122×110 mm. For an all out, high budget drag racer that is at WOT all of the time,  efficiency might have less of an impact on your decision, whereas if you are trying to build a freestyle flyer that gets great flight time, can use cheaper batteries and lower cost escs, efficiency will have more of an impact for you. Aim for a motor prop combo with the most efficient hover at your prognosed weight, just make sure to stay within current ratings and above 2:1 thrust ratio, or you'll have a bad time. 3S (12.3V) 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 am allowing 50% friction factor for movements of propellers and rolling of the wheels. Let’s say that we think we want to use the ZMX 2205-2300. Your frame type will determine many factors about your drone, such as what size props you can run, and what size motor you can mount. Some pilots run the thinnest motor wire they can to minimise weight. 3S (12.3V) A general rule of thumb is to classify your motors first by stator size and then lastly by KV after other factors have been considered. 98. How to choose the right size motors & ESCs for your Drone, quadcopter, or Multirotor build. 50% 16.36 2.72 45 6270 333 80/27 If you want a smooth lightweight motor that packs a punch, then this is the motor for you. R Series Outrunning Torque Motor. It is also a power hungry motor at WOT, however, because the stator is larger, it will have more torque. I've been getting into some long range (technically really short long range atm) and trying to figure out a good balance between prop size for 7 inch and motor sizes. Which motor and blades to buy? 8 of the biggest motors and blades you can buy attached to an aluminum frame. QQ190 Tank V3 Racing Drone Frame Kit Set includes motors, plastics, and camera. My project does not involve any flying. ESC 30Amp Readytosky (100g) Our Top Pilots have chosen the BEST components so you can shop with confidence. I assume it means “wide open throttle”. 4S (16.4V) Google “2212-kv920 thrust test” I get, From https://www.rcgroups.com/forums/showthread.php?2266912-DJI-E300-(2212-920KV)-Motor-Prop-Testing, Motor: DJI E300 (2212/920Kv) – Page 1 of 4, Prop: iFlight iCF 8055 Carbon Fiber DJI Hub (TE Style blade) It is one of the smoothest flyers I have now. Torque can effect the time it takes the propeller to reach a desired speed. 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. 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. Replaces motor mount cross and brings motor further back. The stock receiver with stock antenna will begin to sell end of February 2018. If you spin a motor, it will generate 1V at a certain RPM. It combines a small 12x12 footprint with a wide stator to generate a sizable amount of thrust compared to most micro motors. Thanks everyone for the words of encouragement. 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 efficiency of this motor is also a little less than the purple top 2205 2300 KV. 75% 12.27 2.37 29 7536 196 68/20 G46 Brushless Motor for 40 Class Balsa Airplane The largest FPV & Radio Control Airplane Super Store in the State of Georgia G46 Brushless Motor for 40 Class Balsa Airplane Hobby Shop JavaScript seems to be disabled in your browser. This would give me the best option whilst still providing me with the greatest torque. 1200kv - 1800kv on 6S has better chance of being efficient, Always start with bi-blades to limit risk of too hot a setup. Key Features: 1K+ Thrust with 4s battery and recommend propeller combo. $31.98 $ 31. A motor will become a “battery eater” as you call it if it runs outside of it’s efficiency range. You also want to build your quad for your flying style. Throttle Volts Amps Watts RPM Thrust(g) Winding Temp (F/C) Mike. So a motor with higher torque will be easier to tune, and will make the quad feel more precise in the air. Comment: OK for continuous use, Prop: iFlight iCF 9443 Carbon Fiber DJI Hub 8mm Hole 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 I am happy to realize similarities of movements between my project with those employed for flying drones. Here are some more build pics of the freestyle project. Not the other way around. 75% 16.16 6.45 104 8541 570 72/22 i have a hexacopter with 10 inch props. I would appreciate your help in selecting the right kind of motor, controller and battery for the following. To find your ultimate prop/motor combo: So what can we learn from this? This is more than double the power needed for acrobatic flight and can make for a truly awesome flying experience. The wheels role against a vertical closed rail guard when rotating. 3S (12.3V) 25% 12.37 0.93 12 3067 106 77/25 25% 16.36 1.17 19 3744 161 80/27 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. I'm actually using the RR hypetrain drib motors. A good rule of thumb for a quadcopter is to aim for a 4:1 power to weight ratio. Some motors are labeled as CW, and CCW. This motor … your article does not help. Then under "Recommended Components" it has "Motor Size 2306/2450kv". Fits for motors with 16x19 spacing (like 220X and 230X), 16x16 spacings (Like AriB 2514) and 19x19 spacings. Comment: OK for continuous use, Prop: iFlight iCF 9443 Carbon fiber DJI Hub Self Locking 50% 12.21 2.21 27 4552 255 69/21 A lighter motor is going to have a faster spin-up & slow down, and will yield a faster change in speed. Ideally, you want to try to choose the motor that is most efficient throughout the range of operation, not just at the highest RPM. Your prop size will be determined by your frame. I am making a quad-copter having a weight of 15 kg and want to fly it for about 10 kms. On the other hand, establishing such formulas for so many movements as basis for computer simulation is not an easy task. Choosing Motor Sizes. First of all many thanks to you for such a great blog. I scored 40a esc’s at 60%off and the esc’s that came with the drone was 20a. You have to find thrust tests to figure that out. Hi, did you get an answer to your message. i want to carry a weight of about 2 to 3 kg so what frame size,motor,esc and battery shall i use ,i also want a flight time of min 20 min. 100% 15.81 13.94 220 9345 1161 106/41 100% 16.14 6.76 109 12187 541 71/22 “So a motor with higher torque will be easier to tune, and will make the quad feel more precise in the air. Propellers. 4S (16.4V) 100% 11.95 10.07 120 7877 1034 77/25 So let’s use them as an example. Motors. 0505 (1) 0603 (3) 0605 (1) 0605 (2) 0703 (4) 0802 (8) 0807 (1) 0905 (1) For the purposes of this post, we will try to use 5x4x3 because we are theoretically building a freestyle flyer. Or are you building something to haul a camera and get the best flight time possible? Are you building a racing drone? I agree with Kaity, 23XX is as small as I think you should go. A lighter motor will most likely feel more precise in the air, and pids might be easier to tune. Propellers 8045 Any help would be great Also, a lot of frames I'm looking at don't even specify the motor mount pattern. Comment: OK for continuous use, Motor: DJI E300 (2212/920Kv) – Page 3 of 4, Prop: iFlight iCF 9443 Carbon Fiber DJI Hub Self Locking Flight Controller Naze 32 (10g) lighter motors are more prone to damage upon impact, so beginners might be better off with heavier motors. We could have chosen motors for the qq190RTF with a higher thrust output to go on this quad, but this wouldn’t have been a good choice because the motors on the QQ190 only draw 24A at full thrust with HQ 5x4x3 props. Flight Controllers. 75% 16.08 7.63 123 7812 757 81/27 Use the chart in step 3 to pick a good stator size starting point, then find a motor that you think will work. 25% 16.38 1.19 20 4260 139 72/22 FREE Shipping by Amazon. This is up to you, the builder to figure out. 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. ZMX Fusion X20 2300kv Motor Test and Review - Quad Questions, https://www.rcgroups.com/forums/showthread.php?2266912-DJI-E300-(2212-920KV)-Motor-Prop-Testing. 4S (16.4V) “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: Also, the entire article is implicitly written with the assumption of a 4S battery. Thanks everyone! A Series Dynamical Modular. It is a high-performance derivative of the Australian Ford Falcon.. The main advantages of Li-Ion over Pb (lead acid) batteries is their compact size, light weight (roughly weighing 1/6 Many people think that the ESC and battery ratings mean that the motor needs to handle the same current ratings, but this is wrong. 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. Agility: 5045 & 5045 bullnose or 5" triblades, with a mid-large high kv motor and a small 1300-1500mah high C lipo. By the way, at the point “Torque & it’s relationship to kv” you wrote that kv is the inverse of kt. Each quadcopter motor has been carefully balanced and tested in the factory. Motors handle about one quarter of the current from the battery. FPV Cycle changed the game with this truly unique 2203 sized motor. Expect short flight times. So a 450 quad has 450mm between motors… The correct way to think about Kv is to think of it as a motor constant. Comment: OK for continuous use, Motor: DJI E300 (2212/920Kv) – Page 4 of 4, Prop: DJI 9443 Self Locking prop (plastic blades) It is common to see that number double to 8:1 or more in racing quads. Battery 11.1v 3s 30c(191g). 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. Give yourself some room here- so if you are drawing 25A, choose a 30A esc, 18A, choose a 24A esc. And Tattu quadcopter motor is tested by many great pilots, mean while infuses the advantages of all the other motors in FPV quadcopter field. The most significant indicator of torque is stator size, so in some ways this factor is a spectrum between response times and motor weight. 75% 16.10 7.46 120 7790 766 80/27 Frame size also limits the prop size and each prop requires a different motor to spin it and generate the thrust efficiently. someone has asked me to built a drone having payload of 3kg and endurance in the air is15 minute . Ideally, you want to try to engineer your quad to efficiently fly, but also generate enough thrust without completely destroying your battery. 3S (12.3V) kV Rating. So when selecting your motor, you should try to find a motor with a high power-to-weight ratio. 75% 16.14 7.12 115 8139 652 85/29 The FPV F6 is an automobile that was produced in Australia by Ford Performance Vehicles from 2004 until 2014. A lighter quad with motors that have less thrust can feel just as good in the air as a heavy quad that has motors that output max thrust. The large motor will most likely turn out to be more powerful than the small one. 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. 25% 16.43 1.15 19 4285 133 80/27 Yes, ” Stator size effects the torque output” -however, the recent advances in brushless motor technology has led to lighter, higher-torque motors. However, If using hqprop 5x4x3, then the purple top 2205 is a much better choice. 100% 15.97 11.55 185 10460 994 123/51 do you have to use 4 exact same motors on a quad copter or can i I put my typhoon h motors and my chroma motors together on to the chroma ecmboard?shorten up the wingspan s and use the typhoon h blades on both motors .? If i want to use 10000 kv moter then which esc i should purchase and which battery. FPV. And frankly going with 25XX is fine. Throttle Volts Amps Watts RPM Thrust(g) Winding Temp (F/C) Choose your stator size. 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. Weight wise, the 2206 weighs 30.5g vs the 2205 at 27g. Throttle Volts Amps Watts RPM Thrust(g) Winding Temp (F/C) 50% 12.32 1.55 19 6244 124 68/20 Your email address will not be published. why choose a taller stator over a wider stator for big props? nice, can you night-fly with the new cam? Thank you guys! I find it more feasible to prove it by making a functional prototype instead. Your ESCs will thank you! Stator size effects the torque output, and larger stators tend to produce more torque, whereas smaller stators produce less. Thank you very much! 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. Although, beyond the scope of this post, I will only point out that the popularity of the 5x4x3 has to do with the fact that it is a very well balanced prop in terms of thrust, rpm and speed. Flight Controller Soldering Service for Naze32 or Other Boards, Taranis X9D Plus Model & Settings Files, Voice pack, and Support, Sparrow Knight R220-FPV Racing Drone Frame, Colibri Race Powercube Flight Controller replacement. In the end, you will want to make sure that you have enough thrust to fly well. Kv is typically thought of as RPM per volt. The 2206 would be a better choice for pushing heavy props, but battery performance would be put to the test. Can you find any data-sheets on your hardware and post the links? So as Kv goes up, Kt goes down. Required rpm values range from 50 to 300 (or 60, 90, 120, 180, 240 and 300) which do not need to be achieved quickly. I really appreciate the advice. A general rule of thumb is to classify your motors first by stator size and … Ok, same prop, generates 1308g of thrust, but it draws 30.44A. Comment: OK for continuous use, Prop: DJI 9443 Self Locking prop (plastic blades) Since this post is in a long range section, I'm guessing you will be going out some distance. That translates into 7.24″ wide. Only 3 left in stock - order soon. Throttle Volts Amps Watts RPM Thrust(g) Winding Temp (F/C) I will probably put 2206 and 2305 in the same category due to the similar stator volume. The result is a whopping 9:1 power to weight ratio. The motor torque is proportional to the size of the stator, but the larger the stator, the heavier the motor. I am selecting my components and it’s my first quadcopter. I am hoping that I might get some expert’s opinion from those using this site. 75% 16.16 7.07 114 8175 705 83/28 The dimensions of the motor must work to produce maximum output just before the prop tips go supersonic. The highest performing quads have the best power to weight ratios. Tattu 2305 2450KV Brushless Motors are the best and most powerful drone motors ever made for FPV Racing drone. […] How to choose the right size motors & ESCs for your Drone, quadcopter, or Multirotor build […]. There are several types of motors available and several Stator/KV combinations available. 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. Motors can also make up a big part of that, so keep that in mind as well. 4S (16.4V) 15mm Extended Prop Shaft allows virtually any prop with 5mm hole. There is no lifting of any parts, and/or quick acceleration or other loads to be considered. An often overlooked and very important thing to consider when choosing motors is torque. When a magnet is pulled over a copper wire, electricity is created in the form of voltage. was my first build, learned to fly on this frame …, The QQ190 Tank V2 has been replaced by the