We use cookies on our site, for example to be able to use the shopping cart or to improve the shopping experience. perfCalc 1.1: - analysis of multi-motor airplane performance, 8/27/21 - Motor Database The Drive Calculator database contains tablesfor batteries, ESCs, gear boxes, motors, propellers, and stators. The prop's job is to convert the motor power in to thrust, to pull/push the plane through the air. A faster turning propeller (and props can easily turn in excess of 10,000 RPM) generates a lot of noise as the tips cut through the air. 4/12/21 - Spitz C35xx, C28xx / Emax Eco II / Pichler Pulsar, 12/10/21 - Motor Database There are two charts here, one for 2-stroke engines and the other for 4-stroke. Therefore, theres little to no room for flexibility or trial and error. with a single wrong propeller and safes your money.The restricted Demoversion with reduced The first and foremost plan of attack is to follow the manufacturer recommendations for the engine or motor that you have. Prop diameter directly influences the amount of thrust generated, but an ever-increasing and non-performance related issue these days, linked to rc airplanes, is that of noise. Although this chart is related to Top Flight's Power Point range of props, the size ranges suit all brands. propeller length from tip to tip. updated: new brand Tempest, 12/10/21 - Motor Database Our brand new hacker eCalc setup calculator can help. Some hobbyists still prefer 3 and 4 bladed props, usually for style reasons. to measure the decalage of V-Tails, eCalc - Berechnungsprogramm fr die Antriebsauslegung, Auslegung VIII - Edge V3 (Teil 1, Evaluation), Auslegung IX - Edge V3 (Teil 2, Auslegung & Bau), Auslegung X - Edge V3 (Teil 3, Verifikation und Erstflug), Auslegung XI - setupFinder - Einfach Antriebe finden, Auslegung XII - BEC-Backup - Einfach und effektiv, Technik IX - Servo und BEC dimensionieren. Thats because the operating speeds and loads can vary significantly between models. Well hopefully this article has given you an understanding of propellers used on rc airplanes, and an idea of how to select the right size propeller for your model. Links in post#3. and EV-related Slower turning props generate less noise, so larger diameter props run quieter than smaller diameter props, all else being equal. For inveterate experimenters and motor builders, web.archive.org/web/20161012020813/http://flbeagle.rchomepage.com/software/webocalc_1.7.6/webocalc.html, WebOCalc - Free, easy power system help! It just keeps trying until it eventually overheats or catches fire. There are no guarantees with alternate prop sizes, so one must prepare for trial and error. Skalar 10 (1:10 Onroad // 1:10 Offroad 2WD / 4WD / 2WDSC), SPS safety switches for electronic drives, Transmitter - Receiver - Central Box - Accessories, JETI Duplex 2.4EX REX receivers with or without stabilisation system, Stream-Fan ducted fan sytems 70mm (2.76in), Stream-Fan ducted fan sytems 90mm (3.54in), Stream-Fan ducted fan sytems 100mm (3.94in), Stream-Fan ducted fan sytems 110mm (4.33in), Stream-Fan ducted fan sytems 120mm (4.72in), JR servo plugs (couplings) incl. There are countless stories of model pilots losing fingers, or suffering horrendous lacerations to skin on their hands and arms. All Markus Mueller is expressly prohibited. Copyright Pete Carpenter / RCAirplaneWorld.com 2002-2022. There are other factors at play, but this simple account explains the basics of prop numbers. Its all about trial and error. Drive Calculator is a tool for DC motor analysis and the computation of the complete powersystem for electrically powered model aircraft. Which Prop is suitable for my hacker engine? Adding more blades decreases the overall efficiency of the prop because each blade has to cut through more turbulent air from the preceding blade. UNDER-propping EP motors is less of an issue. Can I use 5 instead of 6S LiPo? ,, etina, deutsch, english, espaol, franais, You can test combinations to get an estimate of maximum current, efficiency, prop speed, etc. will increase your visibility on the market considerable. Content by Pete Carpenter. As already mentioned, following the prop size recommendations made by your engine manufacturer should always be your first point of reference. 3D Insider publishes news, tutorials, and reviews about the latest emerging tech. It doesnt know the drag profile or weight of your model. Drive Calculator 3.4 Readme (opens in web browser) With too big a propeller, the motor will just keep working harder and harder to spin the extra load, until something (likely the ESC) overheats and catches fire. Theres both ground and fuselage clearance to consider, and thats something pilots need to work out depending on the model. It calculates the theoretical maximum speed of your propeller, based on the prop pitch. Drive Calculator 3.4 Liesmich (im Web Browser zu lesen) away from onlookers, ALWAYS keep hands well clear of spinning props, ALWAYS keep faced & body clear of the props arc after starting the engine/motor, ALWAYS make fine adjustments from behind the prop (except pusher props), ALWAYS keep loose clothing well clear from spinning propellers, NEVER throw something into the path of spinning props to kill the engine, ALWAYS discard damaged props. Either follow the makers recommendations or use the tables below for guidance. Lets, face it. In the background, these areas of the CLI have indexes, which give each line of Read more, There are s few different types of receiver, when it comes to the FrSky ecosystem. document.getElementById("ak_js_1").setAttribute("value",(new Date()).getTime()); Subscribe to our newsletter to get interesting stories delivered to your inbox! Its vital to understand the differences between testing props with gas and electric powered aircraft. Its easy to overlook safety concerns when were eager to install new props and take to the air. Alternate props are suggestions for skilled pilots who want to fine-turn their models performance. So pitch measurement is really only a theoretical value, but it is good enough to help you choose the right size propeller for your airplane's performance requirements. We apprecite your scan's of any article about eCalc As with IC, electric motor manufacturers give a specific propeller size range for their motors but it's more critical that the range is adhered to. Drive Calculator database (including all updates until 2020-09-05), Weitere Informationen ber Drive Calculator: Pitch indicates how far, in inches, that propeller will move through the air per single revolution of the engine (i.e. Drive Calculator Datenbank (inklusive Updates bis 05.09.2020), The Excel based Drive Calculator 2.21 is still available Further information can be found in our data protection information. every single complete turn of the prop). updated: T-Motor AM480, Learn more about Drive Calculator: This new This is above Mach 0.92. Propeller basics, by Stefan Vorkoetter, author of, Prof. Michael Selig's propdata and tools, a.o. updated: Leomotion L5061, 3/9/22 - Motor Database (There wont be any spam. The higher the pitch number, the more bite the prop takes out of the air. The following propeller size chart ( Top Flight, reproduced with permission) is easy to use; select your IC engine displacement along the bottom scale, then follow the vertical line up to the shaded area to give the prop size range for that engine. The diameter of the propeller (10" in the example above) will also effect how the airplane flies, but also how the engine runs and, again, following your engine manufacturer's recommendations is the place to start. RC props generate thrust in the same way that wings create lift. added Leomotion L4031 F5B Competition, Eachine, T-Motor V & U. This is colour coded to give an immediate idea of the potential performance of that prop with the selected motor KV and battery voltage. EP prop selection is much more critical because different combinations of motors, ESCs and battery packs can generate huge differences in operating speeds and loads. The private use is granted without restrictions. This short guide gives a simplified explanation of whats an otherwise complex topic. functionality and 20% random database is for free. updated: SunnySky X3530 Series, 9/16/21 - new publication: electric brushless motor drives for RC pilots of airplane, multi rotor, UAV, helicopter and EDF jets. You can use this propeller speed calculator to estimate the rotational speed of your prop. Battery Capacitiy", Emax Eco, Turnigy C50xx, SK8, OpenChargeMap Charge Station retrival updated tasks: Since 2004 eCalc provides web-based quality services to However, not everyone knows how they work. The watt meter tells you if the EP prop is a good match for your bird. Its all great fun. Spitz C35xx, C28xx / Emax Eco II / Pichler Pulsar, Drive nearer to the hub of the propeller), the AoA has to be greater to generate a similar amount of thrust being generated at the faster moving tips. So if two props are close to the optimum speed, but one is slightly over, you may still want to test both. There are two measurements to consider when it comes to propeller sizes, e.g., 84: The first number is easy and merely donates the length of the propeller. I've found it much better at predictions and efficiency calcs, since it uses a much more advanced prop model (not just thrust coefficients). If you motor is missung just provide us In the following you have the option of making your cookie settings. Fitting an incorrect prop would mean the engine would still run, but your plane would perform poorly. Datenschutzhinweise. simulate, calculate, evaluate and design Green indicates a good choice if you are looking to fly fast. This handy guide presents you with an easy-to-read prop size calculator. You'd be forgiven for just thinking of your rc plane's prop as the thing that pulls the plane along, but understanding a bit about exactly how propellers actually work is no bad thing. Thereafter all visitors may use your motors for calculation. So I have created Read more, This website uses cookies to improve your experience. These are the questions from the practice! Drive Calculator 3.4 fr Mac OS X (Zip-Archiv, 7 MByte) Download. in-flight thrust and power drain across the utilizable airspeed range. For the contracted The twist is greater towards the hub of the prop because of varying airspeeds along the length of the blades, and hence varying thrust generation. Drive Calculator 3.4 for Windows (Zipped Archive, 5 MByte) updated: Emax Eco, Turnigy C50xx, SK8, If you put an oversize prop on an IC engine, the engine will likely stop running. updated: BYD Dolphin, Seat Born, 9/28/21 - Motor Database Doesnt explain what is meant by a 945 or a 1170 propeller as listed in the Leopard motor table for example. romnesc, svenska, Personally, if you're an EP flyer, I would say that a Watt meter is as essential as your battery charger! 6/23/21 - Large Scare Projekt using eCalc. Thank you to Marc Hoffmann for coming up with this. correction, 5/11/21 - Motor Database: only, How Fundamental difference in behaviour under load between e-motor and ic-engine. Missing your Language?We are looking for Following the manufacturers specific size recommendations is advisable in these cases. Drain Efficiency added - "How many km/mi you can drive on 1kWh of Its straightforward to match the right sized prop to an internal combustion engine (ICE). updated: Mamba Toka, T-Motor F & CINE, The 'twist' in the propeller is there to create the essential Angle of Attack of each blade, just like a wing has an AoA. After opening the application, you can select {1} the exact battery to be used,or the voltage to run the analysis, {2} the motor from a large database of motors/test data, and {3} the propeller to be used, again from a large database included. eCalc Online Setup calculator by Hacker Motor. Published by Mr. D on 23/03/202023/03/2020. Ill just end with a short section on safe practices for attaching and testing new propellers to an RC model aircraft. Pepper 2524, Xnova T Serie, iFlight Xing2 18xx, T-Motor F30, 5/19/22 - Motor Database RC aviators who understand something of the basic mechanics tend to make better pilots too. That said, fuselage and ground clearance issues might dictate which propeller size you can and can't have on your plane. meet us at the We'll assume you accept this policy as long as you are using this website, Adding Flaps, crow, flaperons, and more; in iNav 3.0, My transmitter setup. The prop is operating in a window below Mach 0.62, which will not over stress the motor. This calculator will help estimate the theoretical limits of your propeller on your selected motor and battery setup. They may neither be copied for forwarding nor used in an amended form or on other websites or servers or any kind of electronic device. If choosing a three or four bladed propeller over a two bladed one, a very general rule of thumb is to decrease the prop diameter by an inch and increase the pitch by an inch. Your email address will not be published. 7.25 - What's new? The screw with the coarse thread will cut into the wood faster than the fine threaded screw will. Sign-up now and become an eCalc Heeding such advice is the quickest and most stress-free way. You have an easy way and a complex approach. So if you're looking for an exhilarating, rewarding, addictive and very fulfilling hobby, please enjoy my pages - and I wish you many future happy landings! You have disabled the cookies in your browser. german to any other Knowing how a radio-controlled model takes to the air is as exciting as flying it. Technik XI - Luftschrauben, schneller als die Pitch erlaubt. We support direct advertisement on eCalc to maximize your advertising return with a unique, strong and focused target audience. We pomise.). Notes, 6/11/22 - Motor updated: Peggy You can also search for a motors KV, weight, etc. While not exact, due to component variations, etc. Its the only way to ensure you get optimal performance from the models motor or engine, and plane. The screenshot below illustrates its interface and use. T-Motor U13II, 8/28/21 - Keep reading if you want to learn what to look forspecifically. Is my Motor available?Wondering your motor is in the Database? Drive Calculator Motor/Propeller Analyzer, Rangefinders (Sonar, Lidar, Depth Cameras), Received Signal Strength Indication (RSSI), DriveCalculator Motor and Prop Efficiency Guide. With RCAW my aim is to introduce you to the thrills and spills of flying radio control model aircraft! Ask me how I know . Tunigy SK3-5055-280, Surpass X11xx & X14xx, Flywoo NIN 2303.5, 5/18/21 - Motor Database: or copied and passed on for profit. Novice pilots are keen to start, but this is one area where slow is the fastest approach. Read more, This iNav CLI Sharing tool makes it easier to share some iNav CLI code. Tenergy High Precision RC Watt Meter & Power Analyzer, 10-6, 10-7, 11-4, 11-5, 11-7, 11-7.5, 12-4, 12-5, 10-6, 10-7, 10-8, 11-7, 11-7.5, 12-4, 12-5, 12-6, 11-7.5, 11-7.75, 11-8, 12-8, 13-5, 13-6, 14-5, 14-6, First number: diameter (length) of the imaginary disc (arc), Second number: pitch, the length of the angle of the twist on an RC prop, ALWAYS install the propeller with the curved side facing forward, ALWAYS use the correct sized wrench to tighten the bolts or nuts, ALWAYS recheck the bolt or nuts tightness, especially with wooden props, ALWAYS test the new props AT LEAST 20ft. By scrolling through propellers in the list, you can instantly see the effects on the results. The first number is the arc diameter created by the spinning prop i.e. Never ever underestimate the potential for an rc plane propeller to do serious damage. Theyre ideal for use with any craft made for that engine size. In this environmentally-sensitive world that we live, this is a serious consideration when selecting a propeller, especially if your flying site is 'noise sensitive' (eg close to houses etc.). Keep safe! It has a large and growing database of motors, propellers, escs, and batteries. Your email address will not be published. So while this calculator will give a good idea of the speed of the propeller; it is your responsibility to make sure that the motor can handle the current the prop will pull. Mamba Toka, T-Motor F & CINE, Or, jump straight to the propeller size charts below if you only want to check prop sizes for gas aircraft. your specifications or fill in trk. updated V7.26 for details see Release experienced RC Pilots willing to translate eCalc from english or check out 10/24/21 - Motor Database You can also change the ESC used {4}, although it will only make a minor difference in the analysis. The propeller tips are moving too fast, which causes shock waves at the tips and the air detaching from the blades. Thus, a higher pitch value typically donates a faster aircraft. Drain Efficiency added - "How many km/mi you can drive on 1kWh of Mueller. Theres a general rule for choosing 3 or 4 bladed propellers that looks like this: It may not be that simple, though. Please contact us info[at]ecalc.ch. APC props, How to add tested motor data to Drive Calculator by Ken Myers (, Theory and profiles by dr. Helmut Quabeck, Motor equations by Stefan Vorkoetter, author of. Franck Aguerre's calculator, he is a renowned French e-flight expert: Lots of prop info, data, tests, theory and links in Louis Fourdan's sticky. info[at]ecalc.ch with detailed discription and screen shot - Thank you. The only accurate way to know whether or not your EP propeller is resulting in the correct current draw through the ESC is to use a Watt meter connected between battery pack and ESC, as the video below shows Watt meters don't cost much money and they are simple to operate; a test takes only a few minutes and will give you solid peace of mind. w&bCalc (german), 9/12/21 - Motor Database Drive Calculator 3.4 fr Linux (experimentell) (Zip-Archiv, 4 MByte) At slower speed (i.e. this form and we will update our database with your motors. Drive Calculator is a free tool for brushless motor power system analysis and prop/motor selection. In the worst case scenario, the wrong prop can cause serious damage to components and this is especially true for electric powered rc airplanes. updated: Dualsky TY Serie, Jeti Phasor, 1/17/22 - Motor Database updated: BotherHobby 3008, LA 2005 / Ball park figures. news. Try not to let excitement and enthusiasm make you impatient or rush you along. updated: T-Motor F-Series, 11/20/21 - Motor Database This difference in thrust occurs because the tips of the prop blades move faster than the inner portions of the blades, so the AoA has to change accordingly along the length of the blades; more thrust is generated at faster speeds, just like more lift is generated over a faster moving wing. OVER-propping on an IC plane is not a serious concern and does one of two things: OVER-propping an EP aircraft is a different matter. Products Aer-Series added. In fact, when you hear an rc airplane flying it's more than likely the propeller that you're hearing more than the engine. how to use {5} is the current at full throttle, {6} shows curves of efficiency versus throttle for the motor with that voltage source/battery. perfCalc 1.01: - Red indicates an inefficient choice. The 3 and 4 blade propellers also have their place, but is more better? EV Database Wrong propellers have the potential to cause major damage to other components. ready to have your mind expanded by the possibilities and taste a bit of the future before everyone else. Two-bladed props are cheap and efficient and therefore most in demand. The makers are unlikely to give you alternates to their recommended blades. The Tenergy High Precision RC Watt Meter & Power Analyzer is an excellent example. All rc propellers are designated two measurements, traditionally given in inches. evCalc: updated: BMW iX, i7, 3/31/22 - Motor Database Copyright document.write(new Date().getFullYear()) Website Acquisitions Inc. All rights reserved. Sometimes its not so easy to work out which receivers will work with your current setup. See rig testing 5/9/21 - Motor Database english unit translation corrected, Bug fix for AC Class One of the great things about this hobby is flying with others. updated: several manufactures, 7/17/21 - Motor Database You can see that the higher pitch prop (eg 10x8) takes only one and a half turns to cover the same distance that the lower pitch prop (eg 10x4) takes 3 turns to. Too small a propeller on an EP motor won't do any damage, but you won't get the required performance from your plane. Simply put, props are nothing more than vertically mounted rotating wings. The second number, pitch, is the length of the props twist section. The drag of the air on the propeller will cause friction, and a loss in rotational speed. Dualsky EG series, 2/19/22 - Motor Database Static thrust and static propeller speed are shown in {7}. & Conditions applies. Get Servo Driver eliminating the need for a receiver during motor measurement, FASST-Modul (2,4GHz) an herkmmlichen Sendern, Multiplex radio with Assan or Jeti 2.4ghz module, Assan- oder Jeti-Modul (2,4GHz) an Multiplex-Sendern, Multiplex Profi MC 3030, MC 4000, Royal Evo w/ FASST TM-8, Drive Calculator 3.4 for Linux (experimental), Drive Calculator database (including all updates until 2020-09-05), Drive Calculator 3.4 fr Linux (experimentell), Drive Calculator Datenbank (inklusive Updates bis 05.09.2020). My instantly downloadableBeginner's RC Flying Guide is a jolly good read and covers all you need to know to get started in this incredible and addictive hobby! Interested in a commercial EV Database Different props can still enhance the performance of a regular RC model.
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