EDF Ducted Fan Unit 7 Blade 3.5inch

 F100CUFFLINK 916 points

its due to ARIVE IN ABOUT 3 WEEKS DUD ITS A GREAT LITTLE FAN SYSTEM I HAVE 2 OF THEM ,IM WAITING ALSO.They been comeing like every 35 days

 RCER88 57 points

If you buy the correct motor it will fit directly. Without know the weight of the plane you are installing it in it is difficult to help. The size of the battery compartment is important. That determines battery size. With that then a motor and esc can be determined. In many cases you may need a 60amp or above ESC. You want a about 40,000 rpm on your fan for best performance. So the formula you can use. V x KV = RPM. The higher the KV the lower the voltage but may draw more amps.

Many of the

 MaurizioP 26 points

Turnigy 3648 Brushless Motor 1450kv. Specification: No. of cells: 3-6S RPM: 1450kv Max efficiency current: 45A-50A No load current: 11.1/4.6A Current capacity: 70A/20sec Internal resistance: 0.010ohm Max performance* Voltage: 3-6S Prop: 7x5, EDF90 ESC: 60A Thrust: 1450-2300g Power: 1600W For EDF 1500~1800g model airplane.

 ARCDIRECT 162 points

here are some motor that fit this fan .3025with1500 kv,for 6S and 5mm shift also the war head 1850kv ,but you must run it on 5S both on 4000ma .with both you,ll get about1750Wp which about 4 to 4.5lb of thrust .

 Tarek 6 points

ARCDIRECT ,may i ask why i must run the warhead 1850 kv on 5s ? what if i run it on 4s or 6 s ,what will be the problem by then? thanks for your great advices

 4stripes 119 points

The Tunigy 1800kv Typhoon 500H will probably handle 5S. With 6S it produced over 2000watts/90A and ran hot (including the motor wires).

 PLATNIC 3 points

The Turnigy 1800KV Typhoon looks great BUT are you sure you can fit it into an EDF? The 3 wires of the motor must be at the opposite way from the shaft and it seems to be not the case. I'll add that the motor is made to handle 55-60A, so the power would better be 22,2V*60A=1221 Watts (if you find how to fit it to you EDF)

 4stripes 119 points

It does fit this EDF. The shroud will accept a larger diameter motor than most 90mm shrouds. The problem is that the fan is too aggressive and causes too high an amp draw. I used this shroud and a WEMOTEC CLONE fan. I had do glue in a plastic filler to reduce the blade clearance (used an old shroud of another type).

 ARCDIRECT 162 points

Here is a motor you can try .It,s a war head1850kv out runners ,it,s for 6S but you must run it on 5S in other to make it work with this fun .Of course you not gone get as much if you go with other kind of motor and 6S

 ben 5 points

i dont know about the motor but im running mine with a 5 cell 2650mAh lipo 40c discharge rate :) with a 60 amp esc lol gets the bae hawk flying nicely

 ben 5 points

ide use a bigger lipo to get more power im using a 5 cell

 drdiscus 144 points

what method are you using to measure the thrust?
What rpm is the fan * for ???18 pounds??? of thrust?

 ARCDIRECT 162 points

You got be joking .The scorpion 630kv has 6mm shift and dia of about 44mm, it wont fit, that motor is for the 4.5" to 5" of same brand fan.

 ARCDIRECT 162 points

There goes another joke .1850kv and 6S ?75A .you are funny .Read my other reply , so you can learn .

 ARCDIRECT 162 points

No you dont it come perfectly balance ,just got make sure the shift fits rite into blade tightly .

 oa2525 24 points

Hola amigo soy Cubano radico en California, compre este EDF y le adacte el Motor Heli Motor 1600Kv con un SPC 80A-6s-4000ma-20c,imprcionante el resurtado 9,5lb de empuje,pruevalo y te convenceras. NOTA:no le pongas mas de 6s(bateria) porque explotas el impeler de la unidad, experimente y rebento todo,MUCHO CUIDADO no cometas la misma locura.
saludos: ANTUCHE

 oa2525 24 points

Luis para este EDF puedes usar cuarquier motor que quepa dentro del hausihg donde va montado el motor, solo tienes que tener en cuenta los Rpm que requiere el fabricante del EDF.

 MarcusRjCharita 425 points

If not quite exactly, it must need only small adjustments on foam to do so (92mmx96mm external diameter).

 MarcusRjCharita 425 points

Good question! There is only "111-7B-5 - Shaft for EDF OR003-00111-7B (5mm)" on HK web site and reviews say it does not fit the 3.5in. HK, please help us. Tks!

 ARCDIRECT 162 points

5mm shift comes with it ,but if you need extra, look some where else like fly fly 5mm shift fits perfectly .The shift that you mention i think is typo mistake , how ever i,m getting one to see.

 oa2525 24 points

Hola amigo soy Cubano radico en California, compre este EDF y le adacte el Motor Heli Motor 1600Kv con un SPC 80A-6s-4000ma-20c,imprcionante el resurtado 9,5lb de empuje,pruevalo y te convenceras. NOTA:no le pongas mas de 6s(bateria) porque explotas el impeler de la unidad, experimente y rebento todo,MUCHO CUIDADO no cometas la misma locura.
saludos: ANTUCHE

 4stripes 119 points

It comes with a 5mm adapter...