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.
Specs: 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
just received my 70mm 10 blade from china and am having problems with dismantling the old one , i cannot seem to get the nut of the shaft from the old one .. does anybody no how to get this bloody nut off , every time i turn the nut the whole shaft spins ,iv tried holding the shaft and turn the nut but shaft keeps spinning , driving me mad
Sometimes it is very tricky to get the nut loose or the cone off. On a 90mm DF the treaded part in front of the nut was too short for two slim nuts. I tried the M3 inside hole with a screw and a nut. I came always loose. I put some instant glue to it. This time the nut holding the rotor came loose. Put all the alumiunum parts in aceton. That cleaned off the instant glue.
Cont. : Usable with original Outrunner Brushless Motor (2700kv 2836) and original ESC 45 A ? Or is it necessary to change the motor for a "2826D 3000kv Outrunner Brushless Motor (660W)" or "Turnigy L2855-2800 EDF Outrunner (630w)" and change the ECS for a 60 or 80 A ? Difficult... Best regards.
The motor in the vampire will not work with this as it has too many blades for the motor
The best suited motor is the dr mad thrust 3000kv on 4s1p and use a 100 amp esc
it will turn you vampire into a sweet sounding rocket
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.
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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....
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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
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 â‚¬ 3,000 to â‚¬ 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!