High-performance EDF Ducted Fan Unit 4 Blade, 2.75inch, 70mm

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Certified Buyer Rated

Jun 13, 2013

This is a changesun brand EDF unit. Good quality blade, but housing is a little flimsy. Overall a pretty good unit for the money.

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Certified Buyer Rated

Apr 24, 2013

Spun this up with a 3550 heli motor on 3cell, blew a container of spare parts on the floor, haha. The fan adaptor is nice and true, which quite often is not the case with cheaper items but this seems great. Going to use it in a back-shed project Frankenstein flying wing type deal from left over parts, probably won't fly well but it will be fun anyway :)

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Customer Rated

Mar 21, 2013

Already bought a couple of these EDF. Like other customers claimed, some of the adapters are out of center. But beside this little fault, it is a very eficient and powerfull fan if combined with the right motor.
Until now I achieved the best results with the Turnigy XK 2858 3600KV.
Measured with my Mach Thrust Meter and Dymond Wattmeter I got:
Turnigy 3S 5000 20C; fan with intake ring: 34,5A, 396W and 830g thrust!
Zippy Comp. 4S 3300 35C: fan with intake ring: 52A, 760W, 1300g thrust!
An excellent replacement combo for the Vampire, Seavixen, F86, etc.
Not to mention, that the sound is much more turbine like, than the stock fans.

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Certified Buyer Rated

Feb 23, 2013

nice edf fan unit from usa warehouse

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Customer Rated

Nov 30, 2012

The quality of the EDF is good. with motor dyamond that's capable of running a 4 cell batt. thrust only 950Gr with 45A and nanotech 4S 3300mah.

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Customer Rated

Nov 28, 2012

nice material housing is not flimsy was very impressed with Quality of unit.Mine came balanced used with 3700kv 4cell motor in a rebel jet that I hand launch did not have the same thrust or speed as the stock fan with 3000kv motor and it make a high pitch screaming sounds like its going like a bat out of hell but it aint.put this fan with turnigy typhoon 3450kv in scratchbuilt delta and it performs very nice and the screaming is'nt so bad with this motor very happy with this set up

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Customer Rated

Nov 05, 2012

1- Battery Turngy 2200 mAh 25-35C 3Cell, Motor Turngy 2836-3200 ==> Amp 26, Volt 11.20, Watt 290, Thrust 610 gr..



2- Battery nano-tech 2200 mAh 35-70C 4Cell, Motor Turngy 2836-3200 ==> Amp 40, Volt 14.80, Watt 595, Thrust 950 gr.

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Customer Rated

Sep 29, 2012

from my testing
1500mah 4S zippy compact, 479watts, 37.5amps,702grams thrust exiting a 45mm diameter exhaust cone

1500mah x 2 parallel = 3000mah 4S zippy compact, 616watts, 43amps, 675grams thrust exiting a 45mm diameter exhaust cone

both test using turnigy 2836 3200kv motor

this is a ChangeSun fan great quality mine was ready to use and works well

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Certified Buyer Rated

Aug 31, 2012

I brought this edf unit before so I can tell you that you are going to buy more of these unit to replace all you 70mm jets with.. of course the ones that you want more speed.. great quality construction. excellent price..

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Customer Rated

Apr 19, 2012

waste of mony ... not balanced - screams like hell ... the HET6904 will be the
better choice (yes it takes 3 times of mony but you will get high quality)