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> Hardware & Accessories > EDF Systems & Parts > EDF Units - No Motor


10 Blade High-Performance 70mm EDF Ducted Fan Unit

10 Blade High-Performance 70mm EDF Ducted Fan Unit
10 Blade High-Performance 70mm EDF Ducted Fan Unit

A high thrust and well designed Electric Ducted Fan unit for high power applications, the 10 blade arrangement makes for a quiet fan unit with an amazing sound, this is the closest you will ever get to the sound of a Turbine!

Made with 30% FRP and dynamically balanced, for use with high performance 28mm EDF motors, either 3.17m or 4mm shaft. For the best results from this fan, we reccomend the Turnigy 2855 EDF motors.

Outside Diameter: 72mm
Rotor Diameter: 68mm  blade
Meterial: carbon fiber reinforced Nylon rotor 
Shaft adaptor to motor: 3.17mm or 4mm
Max RPM: 45000 RPM

PRODUCT ID: 444000001-0

Shipped from:
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  • Turnigy L2855-2300 EDF Outrunner (450w)

    Combo Price: $12.91   BACKORDER
    Add to Cart

  • Turnigy L2855-2800 EDF Outrunner (630w)

    Combo Price: $12.91   IN STOCK
    Add to Cart

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 Customer rated
Total of 104 discussions.
Dion610  5 points - 9/24/2016
Can u use 2826D 3000kv motor with this dcted fan?
Michael  27 points - 7/21/2016
Where do you get the small screws to mount the motor to the edf casing? And what size are they?
 medievil1959 83 points
3mm x 6mm or 3mm x 8mm, they are listed in Hardware under nuts and bolts
MASON  1 points - 7/1/2016
I Just received two of these edfs and plan on ******* them tomorrow and if all goes well the test flight the day after, is there any specific way to put the washers and the nut on the 4mm adapter? any assembly help would be appreciated.
Andrew  3 points - 1/26/2016
Is it possible to flip the blades around so that two of these can be mounted in a counter rotating configuration? Thanks for the help.
 medievil1959 83 points
HK do not have any 70mm Clockwise impellers listed in this style and size so no you cannot. Standard impeller is counter clockwise when viewed from the front. You can buy a complete EDFs that comes with motor as well but you would have to buy its partner to have a matching set....... expensive but only option in this size at the moment.
cessna_aerobat  25 points - 1/3/2016
Test results of this fan unit (without the inlet ring) with the Turnigy L2855-2300 motor. Turnigy nano-tech 3300 4s 35c = 32 amps 503 watts. Overlander extreme pro 5000 5s = 45 amps 889 watts. Even on 5s the motor was barely warm so I think it can handle 5s for short periods, I will be fitting 4 of these units into a Robbe BAE 146, interestingly when using the 5s battery the amp draw is only 25 amps to get the same 503 watts that full throttle on 4s provides so after take-off I should be able to throttle right back to get long flight times.
 John 6 points
Did your units come with the 4mm adaptor, if not how are you using the L2855 motor?
 cessna_aerobat 25 points
I bought these units about 12 months ago, all 4 units came with the 3.17 mm and 4 mm adaptors.
 John 6 points
Thanks, I thought that might be the case, but I appreciate the response
 ATAN #1 119 points
Hi friens.... is it for sure,buying this set we will get both 3.17mm and 4mm motor shaft adapter?... appreciate your replies.
 ZLIN XIII 78 points
I received 2x EDF without the 4mm adapter. They did send new ones, but again without 4mm adapters. Now they did send me after long discussion 2x PRODUCT ID: 107000089. Note that with these other 4mm shaft adapters, you need to shorten the motor shaft of the L2855 for about 6mm. As told elsewhere here, wise to order this separate shaft, because the current stock....not sure if it holds the 4mm shaft adapter.
Customer Reviews
Overall Rating
1 thumbs up!
VERY VERY Nice sounding fan, here are the thrust numbers using HKs L2855-2100kv motor..........6S 4500 25C \ Vm: 21.63 \ Ap: 68.36 \ Wp: 1538.74 \ Thrust (Kg) 2.2 AND 4S 3300 25C \ Vm: 14.18 Ap: 35.32 \ Wp: 534.5 \ Thrust (kg): 1.3 AND 5S 4400 65C \ Vm: 18.82 Ap: 54.70 \ Wp: 1067.10 \ Thrust (kg): 1.8. That is great thrust and great sounding here's a video ( watch?v=coa9aMKyp0s ), no that is not a turbine that is this fan spooled up slow before take off.

26 comments. Reply..

Overall Rating
Like it?
Great sounding fan, what the 70mm EDF jets have been missing. I'm using this with a Turnigy L2855-2800kv EDF on 4S 35C 2650 Nanotech in a foamie F-16 (also here on HK). I'm getting around 750watts at 55amps. Some things to watch for are 1/ Housing is flimsy so becareful how much power you intend to run 2/ sounds much better when properly balanced although its not too bad as it is 3/ make sure you tighten the fan properly to the adapter or it might slip 4/ don't use the spinner or it will throw out the balance. Definitely worth the money for the sound although it won't break any land speed records....

2 comments. Reply..

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The most radical change in 70mm EDFs for a while. Amazingly quiet and respectable thrust. No other EDF of similar price is so refined and effective.

Run it with an L2855-2300kv on 4S and get 1.3 Kg of thrust or go to 5S and get 2.0Kg of thrust. I uploaded a video of this unit in a Durafly Vampire. It will not sound the same in every plane since the airframe ducts and exhaust play the major role in the sound being generated.

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Well. after testing this fan i was amaised to find out that its not so good as afew ppl wrote in these revews. at 22 volts 30c 5000mah battery the fan gave onley 1200 grams of thrust that was without the intake rim but with open air intake and took 1000 watts. with the same motor that the reveweres used L2855 2100kv. i think that what afew ppl wrote here in the revew is wrong. it just can not be and its also not logycal. the regular 70mm 6$ 6 blde fan gave me 870 grams at 650 watts. and its not so diferent than that fan just afew more blades. by the way the saund is more plesant with the 10 blade

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The Changesun is the revolution of the edf! Finally the only solved the problem of electrical configuration that remains the least expensive and most efficient ... ie, the noise! with this you get the feeling of having an aircraft jet airliner. Greetings and kisses you crazy spending by € 3,000 to € 5,000 per turbine kerosene! If it progresses technology obtaining lipo lighter and more resistant to high amperage will be a pleasure. Anyway, I'm going to 6s with Turnigy kv2100 54a with 1.4 and I get thrust. Using a 65c 2250mAh lipo with Atencion. Thanks HK!

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