Exit diameter is 64mm and is 28mm long so it is optimal for a 70mm EDF. Any more or less than this will result in loss of the thrust output. Aug 20, 2022 · Thrust test on the Ejets Jetfan Pro 120mm EDF. 3 Ounces. Every Day new 3D Models from all over the World. I printed with PLA, 100% infill. The tube is 50mm long and there is an extra 20mm that couples it to the EDF, while the optimal length is about 4x the diameter of the EDF which would be 200mm that simply wouldn't fit on my HK FlyCat. 6s will have lower voltage (maybe 22v +) , lower Size: 20 Inches long, 12 Inches wide. The calculation I found was: Thrust = Mass flow rate * (Exhaust Velocity - Free Stream May 19, 2021 · I’m using eight screws of M2. Forums; Magazine; Blogs; Classifieds; Places; More; Search; Sign Up | Log In Jul 31, 2011 · I bought a HobbyPartz EDF/Motor combo that was supposedly 64mm for my Phase 3 F16 and have been challenged with how to make a custom thrust tube. The calculated Kv for this motor is approximately 2,222. 12 cm thrust tube for Midi Fan pro. We would like to show you a description here but the site won’t allow us. William E Brown: Electric Ducted Fan Jet Talk: 17: Dec 16, 2007 11: 20 cm thrust tube for Midi Fan pro. 15% infill and 0. stl. Inner Housing Diameter: 90mm. Anything less should be fine but won't be as efficient. there is a big problem: the inlet and outlet tubes have become too long and therefore the static thrust is greatly reduced. com/articles/ Jan 20, 2023 · Thrust tube fabrication fixture. It has an 8% Diameter Reduction at the exit which should give you a good mix of speed and and torque. Also be sure to optimize your thrust tube length and diameter, and I would reccomend staying on the shorter side to maximize static thrust. free Downloads. The hub diameter is: 40mm. Size: 20 Inches long, 12 Inches wide. I made a thrust tube with a length 4X the diameter of the EDF and varied the outlet diameter for 80, 90, and 100% FSA. Low rotor blade count edf (5-7 blade): The exhaust opening needs to be 75-80% of the diameter of the edf unit. Both the EDF tube housing and ''thrust tube'' are 90mm in diameter. The EDF 50 likes weights in the 6oz region where the EDF 55 The Jet fan 110 is a new addition to this popular EDF line with the "whoosh" . Jul 12, 2021 · As a general rule for a single stage EDF the static thrust is increased by about 10% if the nozzle smoothly reduces the duct to between 85% and 90% of the Fan Swept Area. If a thrust tube needs to be longer than 20 inches, then a second tube needs to be purchased and then put end over end in the fuse of the jet. Intake ducting is some of the same but with caveats. 49 Here we look at static thrust and jet efflux for a few different models. Apr 21, 2020 · Looks good! I wish you best of luck! one thing I learned on my concorde build is the importance of having enough thrust, obviously airflow is a big part of that, as you know I love my cheater holes . Mar 13, 2017 · Thanks! In the first iterations of the EDF version I was getting ~32 oz static thrust on 4S, pulling ~610 watts. G. Tube to mount on the end of EDF to get a optimal thrust/speed. 20 cm thrust tube for Midi Fan pro. Welcome, Sign in English. 8 in) and tapers down to 75 mm inner diameter towards the end. This gives me 2 choices-- I now can add the inlet length (6" to cover the front, nose cone and cheater holes) after it flies to see if it looses too much power or now install a pair of 70's by enlarge slot and install new circular tube. The nozzle will print without support. US$6. - Moving the EDF to the forward position shortens the length of the inlet tube but lengthens the outlet tube. The exit diameter is adjustable: A thrust tube is used to organize and focus an EDFs thrust. Gents, Too many times we either need to replace or custom build a thrust tube for EDF or GDF planes. Tractor fans (like Dynamax, Ramtec, and Viojet) used a molded fiberglass thrust tube with a cap that enclosed the engine (to direct airflow over the head), then the tube could be constricted gradually by 10-15% back to the outlet. 6 in) and tapers down to 75 mm inner diameter towards the end. Edf need a thrusttube the 85%fsa is to increase blade load to gain Amps and useable efflux speed without stalling the blades. 6 lbs. You can make them smaller and smaller, but anything under 65% will likely "stall" the fan and make it hard to get thrust or efflux. This then gives you the area of the exit you want. 5 mm chuck adapter. be/Wocw7k_7K4M Dec 2, 2019 · So I decided that my EDF,thrust tube,and gimbal setup will be 13" long. The Thrust Tube requires support around the servo mounts. Jet fans are very smooth running and have a pleasantly quiet sound, while maintaining lower amp draw, and higher efflux velocity than other high blade count fans. Length when mounted is 28 cm (approx. 16 cm thrust tube for Mini Fan pro. now, that may not be good on the eyes a. 28mm diameter motor. Rotor: 9 bladed dynamically balanced. Adjust camera position with the right mouse button. 100% FSA thrust tubes give the best thrust, but with less Efflux. Now apply a strip of tape to the top side (actually the bottom of the fuse) Remove the fan screws, rotate the fan around and fully tape the side you temporarily taped. Hope you guys enjoyed it See you Daniel from Munich Feb 8, 2023 · EDF Thrust Tube design Question - perplexity. The front end of the thrust tube should fit tight around the back end of the fan unit. Description: Material: glass (black) with carbon reinforcment; Length when mounted is 16 cm (approx. Discussion EDF Tubes for Dummies? Scratchbuilt EDFs. 40g. 8. Be sure to add 1/4" for over lap onto the EDF. Designed to fit a Changesun 70mm 12-Blade EDF Unit, and a Typhoon 2W-20 engine. On mobile devices pinch two fingers together or apart to adjust zoom. 75 mm is perfect for the Midi Fan pro. 88. Assembly video can be found at:https://youtu. OK, First off I am not an EDF expert that's for sure. Calculated FSA: 69. Modelled around a QX motor 70mm 6 blade EDF. Double-click to enter the fullscreen mode. Drag increases exponentially, with the linear increase in air speed. You will need to wet sand the ball-joint surfaces. com/articles/ Size: 20 Inches long, 12 Inches wide. Click to find the best Results for edf 50 mm thrust tube Models for your 3D Printer. 2v - Static Thrust: Around 2400g ( 25v , 65A) - Motor:: 2860 2200Kv Inrunner Motor (Installed) Xfly 70mm V2. Feb 17, 2015 · Thrust tubes should be kept no longer that 3 fan diameters in length. The most I could get is 750 grams thrust. EDFs are maybe 60% as efficient as regular propellers. 63. 2kg/ 4. Jul 31, 2011 · I bought a HobbyPartz EDF/Motor combo that was supposedly 64mm for my Phase 3 F16 and have been challenged with how to make a custom thrust tube. Mar 11, 2019 · Length: 88cm (Fuselage: 78cm) Weight: 620g without battery Elevator: shortend to 34,5 cm Height: 21,5cm EDF: (FMS) 64mm; 3150 kV; 1150g thrust; 11 blades ESC: 60A Yuki model; only got it working with 5V regulator Reciever: 4x 9g Battery: 4s 14,8V 2400mAh Feel free to ask what you want to know. Français; English; Contact us. and its weight is around 115 grams. It should fit any EDF as long as its main body diameter is around 71-74mm. FliteTest Thrust Tube article: https://www. Thickness: 0. com/articles/ Nov 29, 2009 · FSA is the area of the inside of the housing, minus the area of the rotor hub or motor tube. Mar 20, 2024 · Part Retro Rocket EDF Thrust Vectoring for 70mm 1. If you require assistance in choosing a 10-14s Jan 11, 2016 · Unfortunately the normal thrust tube arrangement does not really "equalise" the volume down the tube. Oct 17, 2012 · if you want a good ratio for a podded application, your thrust tube length should optimally be about three fan widths. If the inlet is less than 100% FSA then try and match the FSA with the thrust tube. 28 cm thrust tube for Mini Fan pro. 10000+ "edf thrust tube" printable 3D Models. Just a simple thrust tube for a Dr. Weight : 274gr Amp draw 73A @ 25v Thrust : 2600gr They tested fans with constant voltage @ 25v. But, my current scratch build is a simple model with foam tube and similar to a mig-15. After connecting it, the EDF will have a flat bottom and it can be mounted on the test rig. Takes a motor with a diameter of 36-40mm. Well I've been wanting to put a thrust tube in my T45 for a while now and thanks to "jaquesone100" I did it for free so thank you for that. 80mm EDF with Attachment Thrust Test of 80mm EDF. Weight: 122 grams – 4. Aug 25, 2013 · EDF Thrust Tube: builderdude: Electric Ducted Fan Jet Talk: 15: Apr 03, 2013 11:21 AM: Discussion: Thrust Tube Construction Tips: JohnAsaPrice: Electric Ducted Fan Jet Talk: 2: May 27, 2009 08:45 AM: Discussion: EDF Thrust Estimation using the stream tube power (STP) parameter. your outlet should be about 56mm in diameter for a 64mm fan. for a 50mm fan, try about 43mm Apr 4, 2021 · The inside volume of the tube is 412,132 cubic millimeters I believe: Inner diameter is 80mm and length was 82mm. You should be fine with approx. I am currently making my thrust tube and I'm reading up on it a bit. No need to build another. High rotor blade count edf (10-12 blade): The exhaust opening needs to be 85-90% of the diameter of the edf unit. Nov 7, 2022 · The Xfly 70mm V1 - Weight: 235g - Rotor: 70mm , 12 Blade - Working Voltage: 6s 22. 5in) and tapers down to 55 mm inner diameter towards the end. com/articles/ Mar 23, 2013 · I've read that the ideal thrust tube length is between 3 and 4 times the diameter of the EDF fan. I printed the thrust tube with Hobbyking PLA at 0. Explore 64MM EDF THRUST VECTOR. Upgrade / replacement for 100-120 mm EDF applications. Description: Material: glass (black) with carbon reinforcment. After some research, I thought I would share my experiences and findings. For a given static thrust (3. I should test this again once I have the EDF and thrust tube installed. 28. Replace the fan and the screws. 2kg/ 13. Blade design can change efficiency a lot (up to maybe 20% in a regular prop). May 5, 2016 · EDF Thrust Tube - design & usefullness. 8lbs to 6. Jun 7, 2015 · rear view left thrust tube use a "stick" of some sort to contour the edges before the epoxy hardens; Views: 67 edf installed in thrust tube via hot glue into shrouding wall; Views: 86 edf installed in thrust tube via hot glue into shrouding wall; Views: 110 installed the dual esc via hot melt onto a smaller height wise version of the esc Jul 12, 2021 · As a general rule for a single stage EDF the static thrust is increased by about 10% if the nozzle smoothly reduces the duct to between 85% and 90% of the Fan Swept Area. Comes complete with mounting tabs and instructions. Works too for Schübeler DS30, HET 6904 and Jul 31, 2011 · I bought a HobbyPartz EDF/Motor combo that was supposedly 64mm for my Phase 3 F16 and have been challenged with how to make a custom thrust tube. This is my first Free EF2000 EUROFIGHTER - 64 MM EDF JET [RC PLANE 10000+ "edf 50 mm thrust tube" printable 3D Models. Over the years I have found that doing it by yourself not to be fun or easily accomplished without frustration. com/articles/ The 90mm EDF is located abit higher above this blue section, attached to 1, I believe the blue section becomes a ''thrust tube''. First I will calculate its weight. Easy to cut, tape and attach to fan units inside thrust tubes. Settled amp draw was about 117 amps, and the thrust stabilized at ab Overview on my variable length thrust tube prototype and the motivation behind the project. £ 0. Mar 17, 2023 · By placing the EDF inside the wing and inside a central “tube” and close to the C. You will hit the wall at different flight speeds, on different models. Call us now: +33 (0)3 10 37 02 01 (mardi/tuesday - jeudi 28 cm thrust tube for Mini Fan pro. (not to mention, letting me borrow his pictures to post here) The new files are specifically designed to fit the FT Store purchased EDF. You may need a much smaller setup as intended. If you are confined by space and you must use a short tube, that's much better than no thrust tube at all. Depending on the model I reduced fsa up to 60% with a matching intake design. Thrust tube for 70mm EDF unit 12 cm long Review 28 cm thrust tube for Mini Fan pro. Description: Material: glass (black) with carbon reinforcment; Length when mounted is 12 cm (approx. Mar 20, 2024 · johnbecker31 submitted a new resource: Retro Rocket EDF Thrust Vectoring for 70mm - Thrust Vectoring Unit. On mobile devices 3 finger horizontal swipe performs panning. Overview on my variable length thrust tube prototype and the motivation behind the project. I started with 400 grit, and worked my way up to 3000 grit. Jul 19, 2011 · If you then want an 85% FSA thrust tube, the exit diameter is then calculated as follows: You take the FSA that we just calculated and multiply it by 0. 4mm diameter exit hole. - 2000kv. Description: Material: glass (black) with carbon reinforcment; Length when mounted is 28 cm (approx. In the article they went through a pretty detailed series of development steps going from an open fan to adding a thrust tube then adding flow straighteners to finally varying the outlet diameter Mar 23, 2013 · I've read that the ideal thrust tube length is between 3 and 4 times the diameter of the EDF fan. The length of the exhaust tube is also a factor as the duct skin friction reduces the air velocity as does any change of direction or aerodynamic interruption. 85. s far as looks go, so you could shorten it to give the best look. O. Be aware you only need 20% thrust to weight ratio to fly a plane very decent. Static Thrust: 2. I would like to give a special thank-you to @SP0NZ for helping with design changes, and testing the fit of the new Thrust Tube. flitetest. 4 mm walls (looks like it should print just fine with triangular infill) and you should end up with a weight of approx. When I set it up on the test rig I'm getting around 800 grams thrust with no inlet or outlet tubes. RC EDF Thrust tube/Nozzle. Jul 28, 2014 · I made these from a length of rectangular balsa stock and drilled a 3/32-inch hole to accept a portion of a toothpick. I’m using a standard 9v dc motor. Then square root it, which gives the radius. Jul 25, 2012 · Reposition the tube taped earlier if need be. If you are forced to use a thrust tube longer than 3 fan diameters then keep the thrust tube at 100% FSA unless your inlet is less. 14. 5mm). The exit diameter you want, is then Mar 23, 2013 · I've read that the ideal thrust tube length is between 3 and 4 times the diameter of the EDF fan. Silicon adhesive was used to adhere the pushrod tube to the stand-off. Jun 5, 2020 · Thrust tubes also give the EDF a nice "woosh" sound, with the effect being more pronounced the longer the tube is. 55 mm is perfect for our Mini Fan pro. End diameter is 50-57mm | Download free 3D printable STL models Overview on my variable length thrust tube prototype and the motivation behind the project. May 6, 2016 · Less bite, more thrust, but less high end speed. Once painted, it will not be very noticeable. And also read that the tube should gradually taper. Housing Length: 57mm. The thrust test revealed 8. Anything more and some sanding is required. Description: Material: glass (black) with carbon reinforcment; Length when mounted is 15 cm (approx. 1 kilos of thrust on 12's with a draw of about 126 amps max. Mad Thrust 50mm EDF. Works too for Schübeler DS30, HET 6904 and other 69 mm fans. Jul 1, 2021 · Thanks all for watching, I'm going to try and expand on this Afterburner with more videos, any suggestions on what different things I can try would be apprec Jul 31, 2011 · I bought a HobbyPartz EDF/Motor combo that was supposedly 64mm for my Phase 3 F16 and have been challenged with how to make a custom thrust tube. Rafale 70mm EDF Bifurcated thrust tube . Motor - HET 800-68-685ESC - Hobbywing 200 ampBattery - 2 x Genace 6s 5500mah 60CRadio - Futaba 16IZ with Hobb Overview on my variable length thrust tube prototype and the motivation behind the project. With hole for cables, and a plug for tighter fitment. Works too for Schübeler DS51 and other 89 mm fans. To help demonstrate the differences and importance of each value we use a 100N turbi Jul 12, 2021 · As a general rule for a single stage EDF the static thrust is increased by about 10% if the nozzle smoothly reduces the duct to between 85% and 90% of the Fan Swept Area. Click to find the best Results for edf thrust tube Models for your 3D Printer. 2mm layer resolution and with 100% infill (weight: ~70g). Description: Material: glass (black) with carbon reinforcment; Length when mounted is 20 cm (approx. To find the diameter, divide this 85% FSA area by 3. DamoRC 12 cm thrust tube for Mini Fan pro. (Tube length 83mm +13. 80% give better efflux, but less thrust. 005″. FEATURES: Thick duralar material; Size: 20 Inches . Mar 23, 2013 · I've read that the ideal thrust tube length is between 3 and 4 times the diameter of the EDF fan. so if you use a 64mm fan, your thrust tube length should be about 190mm. Looking at ways to increase thrust I read an old article from the 1956 Air Trail Annual on Ducted Fan Design. 5 diameter and 8 mm length to mount the EDF with the attachment. Input Power: 5,500 Watts. Today I had a brainstorm and used a CNC router to make my life easier by drafting up the parts to Jul 31, 2011 · I bought a HobbyPartz EDF/Motor combo that was supposedly 64mm for my Phase 3 F16 and have been challenged with how to make a custom thrust tube. Skip to content. One article said a smaller exit diameter will give higher top speed but lower thrust. On mobile devices swipe to rotate. Aug 25, 2016 · I agree! It depends on which fan you plan to use. But the amount of taper depends on who's article I'm reading. Slips over the back of shroud. When you determine the length of the thrust tube. com/articles/ Buy Thrust tube for Mini Fan pro 12 cm long. I personally recommend having an inlet FSA of a tad over 100% for the purposes of countering effective losses in area from the boundary layer. Whatever comes out of the EDF is immediately put into a duct that has an area bigger by the sudden loss of the motor diameter, normally between 15 and 20%. Mar 30, 2021 · 3D printed EDF with reverse function. Mar 7, 2024 · 70mm EDF housing and intake with a thrust tube. Apr 23, 2024 · This Is My New Design For 5000kv 50MM EDF Powered By 1500mah 4sLipo 40amp - 50amp esc two 9g servo. I then used foam-safe CA to glue the balsa block and toothpick into the fuselage. com/articles/ 15 cm thrust tube for Midi Fan pro. I have not tested static thrust with the current design which now includes a proper thrust tube. 62kg in my case),I am interested in the maths behind finding the velocity exiting the annular area, V1, the velocity at I have heard the best tube length is about 4 times the diameter of the fan; for a 70mm EDF, it's around 10 to 12 inches. Nov 12, 2023 · I bought a 50mm EDF that is rated at 950 grams thrust with a 4S battery. fn qe bb aa xx bv do nw qi qq