High-Torque EDF Ducted Fan Unit 5Blade 90mm w/1600W Outrunner Motor
Just take a look at this fans blade confirguration, what a torque monster! This is a powerful fan/motor combo that has been factory dynamically balanced leaving you to simply solder your ESC/motor connectors, fit and fly. The Pre-Installed 1900kvOutrunner Motor is rated for 6s meaning an impressive 2600g of thrust, an ideal upgrade for 90mm PNF models!
Fan Spec: Outside Diameter: 92.5mm Rotor Diameter: 90mm blade Material:Fibreglass reinforced Nylon rotor Max RPM: 45000 RPM Thrust (6s): 2600g Weight (Complete unit): 311g Comes with optional inlet ring Motor Spec: motor: 35/48 1900KV brushlessOutrunner KV: 1900 rpm/v Shaft: 5mm Idle Current: 3.5A/11A Resistance: 0.012ohms Max Voltage: 22.2v (6s) Max Amps: 70A
You are going to loose static thrust, but also gain eflux (speed of the outgoing air). 70mm is on the small size, it is just around 75% FSA, good compromise is as a rule of thumb 80-85%, 80%=72mm 85%=74,5mm. I think you are OK with 70mm, but depends a little on witch plane you are going to put it in. With a good ducting you are probably on or just under 2kg in thrust at 70mm.
its not for an rc plane. im agardener and i use these fans to replace my gass leaf blower. gardening bloweres are 70mm. ahand blower is 1.5kg if its the best kind (kumatsu) and aback blower is 2.5kg if its the big 60cc one. im using the 6 blades and the L2855 at 5s to get 1 kg . i tried meny edf's to try to get ablower that will give me more thrust with still being effishiant and not buren out . lepard burent out in 5 minuts also otheres. there is aproblem using an edf as ablower because it dosent get air pushed in the intake cause it dosent fly so it works harder thats why i cant use this one on 6s. i tried alot to find astronger blower and also that wont be to expensive and wont take to much curent but for now i enjoy the 70mm 6 blades i have. it does agreat job. i tested the edf and i saw that if i wil funnel it down i would loose abaut 20%, your right. maybe il think of it. if i would what fan would you recomend that will give me 2.5kg in a 70mm exit and wont heat up and
Who reported/deleted my Q about dynamically balanced fan???? Dont see any reason to delete that just because I answered it myself, especially since the answer was in favor off Hobbyking. This fan does come preebalanced and is made off a better composite plastic then the fan only (PRODUCT ID: 901F) High-Torque EDF Ducted Fan Unit 5Blade 90mm 1600W that looks the same as this..... This is well worth the money!
are you saying if you buy the fan alone without motor the fan is not balanced???? i have bought the fan unite alone with out the motor and it was not balanced . how do you know this is prebalanced? maybe yours was just ok. By the way i dont think anyone deleted your anser ,are you sure you hit the (submit) i dont think HK delited it.
I just purchased same fan combo myself. about 3 weeks ago someone in the park brought a same name brand fan but 64mm and it was very powerful, so I bought two 90mm fan from KH and can't wait for to my package to arrive.
Yes, fan without motor is not balansed, but this one has the impeller good balanced with a big hunk of some epoxy or similar stuff inside the center hub. About the deliting thing, there was a few (3 or 4) answers to my initial Q so it was clearly delited...
To F100CUFFLINK: as Magnus said, this comes as a set and it is already dynamically balanced from the factory. It is also sold at other online stores and you can even find a video showing how they test this unit to come up with over 2.6 kg of thrust with 5000 mAH 6S Lipo and 80A Hobbywing ESC. The peak current is around 74-75A that lasted a few seconds with a fresh battery. When flying EDF, it is best to buy the whole set that is already dynamically balanced from the factory because almost none o
when installing your motor in the fan , is the key to make it work .This how id o it ,first i replace those phillp bolts with haxon head bolt 3mm same length then intall it by turn then one turn at time till it set , dont torq it yet put the blade on and turn it by hand to see if it,s smooth , then take blade off and do the finnall torq .Then you see the diff .
this is listed with the 1900 kv not sure if its the changsun, but i have the turnigy warhead 1800kv. and im not the to happy with that ,only getting like 90mph WITH MY FLY FLY F4 maybe a bit more ,its faster that the HABU I THINK.
This fan is a torq fan not much for speed , as you can see got high pitch blade , makes good for those grass take off.If you want more speed and pave runway take off .You should go with light pitch and 5 or 6 blade like wemotch or HET .
True, but you would need to have ambient air temperature, air density, humidity, temperature of electronics, exact resistances of all components. It just wouldn't be worth it when taking all the variables into account.
Very true! Also the fact that the test would be static when the fan's dynamic. A test rig which has been suggested for accurate EDF thrust testing is to have a prop with an efflux of 50mph blowing air into the EDF to simulate it flying.Worth a try to anyone who is interested.
You can search in the web how they measure the output of this unit and yes, from the video you can see a max thrust for more than 2.6 kg that lasted a few seconds before it settles at around 2.4 kg. A completely balanced fan will provide much more thrust as its power does not lost to friction and heat (due to vibration). That's why you can find a RC Lander 90mm fan sold here rated at only 1750 watts but yet can produce a thrust of up to 3 kg when the timing is set to high
Published specs seem accurate to me. . I'm using two year old $8.99 HobbyKing 3S 2100mah 20-30C cells (code Z22003S20C) that I should probably retire sometime soon. Still, when configured in 6S and then paralleled (4 cells total) I get 36000 rpm, 21v, 60 amps, 1260W. This is on a Superbrain 80A ESC, with the data pulled from the built-in logger. I can imagine that with better/newer cells I'd see 40k rpm, maybe even 46k like published, but that would be a pretty big stretch. . The motor has small holes drilled into the back of the end-bell, indicating that there was a genuine attempt to balance it. However, I found that mine needed further attention. Not much ... about 4 coats of flat black paint on the light blade - front and back side - and I had an acceptable unit with no vibes resonating through my foam F-18. . It is a fairly noisy combo though, with the motor I believe making a substantial high pitched, annoying whine at all rpms. . Also of interest, mine makes a faint whine even when completely at rest. Strange! Not enough current to register on a wattmeter, but something is happening nonetheless. . If it came better balanced I'd have given it 5 stars across the board.
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I actually got this from a different distributor I've been aquanited with for a while but it's the exact same product So I guess it's up to you whether you wanna believe if the distributor makes a difference :S
So I used this in my 90mm l-39 on 6s turnigy 4500mah 30C packs. EXCELLENT amp draw (75 amps) for a lightweight combo unit w/great thrust. However on the 3rdish flight the thing started to smell funky. Thought the motor died when it was actually the rotor slipping on the adaptor and creating buttloads of friction and making the smell. So I simply epoxied it to the adaptor figuring that if another problem arose I wouldn't be using the unit again. Sure enough on the 25th flight the motor started to slow down big time and seem jammed. When I rotated the can by hand i could hear what sounded like a copper winding wire scratching against the magnets 0_0 I looked at the windings closely and noticed that they're not insulated unlike mega motors.
I do fly on a dusty dirt and tiny rock field so maybe that coulda been a part of it.
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I bought this fan as a replacement for the stock one in a 90mm L-39 Albatros, also available from this site. And it fit with very few modifications.
Overall I'm very happy with the fan, though I did take it apart and rebalanced it, just to make sure all screws were loctited, which they were not.
Performance wise it is a good fit for the L-39, and I guess for the other 90mm FlyFly/Hobby topgun models of the same class (scale jet trainers).
Using a Turnigy 100A SuperBrain ESC and a Kypom 6S 5100 mAh 35C, I get around 65A, 1400W at full throttle.
Sorry, I got no thrust numbers, but I have this video to give an idea of the performance: youtu.be/UtjoXp4mGgU
Warning: Turnigy K-Force ESCs will not work with this motor. They can not cope with the rpm of this setup, as the max rpm for K-Force ESC is 35.000 with 12-pole outrunner.