EDF Ducted Fan Unit 7 Blade 3inch

 ARCDIRECT 162 points

28 is the diameter of the motor in mm ,that fits into the fan .But the spec of this edf says you can use up to 31mm .8 turn is some how winding of motor .how ever ,your motor 2213 ,tells me that it is a in runner ,so your 22 is your dia in mm .This fan depending on , how many volts ,you want put into it .I,m planing to go on 6s batt, so i,m putting ,a 2100 kv out runner ,which i prefer .Since i,m using it for a twin A-10 edf .So give more spec of what you,r planning ,then we can help you more .

 F100CUFFLINK 886 points

sounds like the shaft is the wrong size ,if its vibrateing that bad and wobbles. the motor shaft canton have any play at all in it you mush check the specks on the size and be perfack fit.

 k.smith459 52 points

no but ive used it on a scale a380 plenty power etc deadstick landing with one engine running warning this fan must be dynamicly balanced before use otherwis at full throttle it will rip itself apart

 ARCDIRECT 162 points

You got use remmer not drill , by the way adapter for motor comes with it and it,s 3.17 mm .Most motor that fit this size fan have either 4mm or 3.17 .

 Mattias 3 points

Zippy 3S1P to be more exact.

 Sockrat 176 points

That's why high power systems use 4-6 cells, not 3. With 6s you'll get same 1.1kW with 50A. Get a 2100-2500kv motor and run it on 6s. Or use your motor on 64mm 5-6 blades

 Grampy 9 points

sounds like your cranking wide open to soon, run the sucker up slowly and let everything break in for a little bit. up the rpm range slowly and then slowly back down.Once everything seats in then go for the numbers and see what she'll do.Get back to me I'd like to Know. I have the same unit going in a XB-70

 ARCDIRECT 162 points

110% agree with SOKRAT , this high pitch fan and need more cell and less KV , his recommendation of 2100-2500kv is the way you should go .

 ARCDIRECT 162 points

DON , go to motor section click on edf motors they have a planty of choices for you , 2100-2500kv is what you need for 6S or 5S and 3000-3500 on 4s or 3S.good luck .

 ARCDIRECT 162 points

Here is a motor for your KC-135 and this fan , that will work the best ,no but or if . L-2855-2100 which 2100 kv got a 4mm shaft and runs on 6S ,that will give you more the 16lb of thrust with 4 edf , ESC of 60A x 4 is recommended .Also look for 4mm shaft on this section for edf look for same ID on shaft as is for this edf .

 John 131 points

Use a magnetic balancer.Find the lightset blade and mark it with a pen,then slowly turn each blade too top dead center and sand the opposite blade or blades so it doesn't drop. Be patient and work slowly so not sand too much.

 Cap231ex 121 points

I have this fan unit in a Mig-15 with a 51" span an AUW of 2 3/4 lbs. with an Electrofly 28-45-2700Kv,60amp esc.and Hextronic 2300mah 5s1p battery.I am getting 3.6Lbs.of static thrust out of just one so 4 of them should work just fine for your appailaction. For the ESC you ask about 2 would work they would have to be about 100+ amp and you want to put the 2 outboard together and the 2 inboard together this is so if there is a failure you can still control plane.As far as a battery goes it will have to be big 4400mah or bigger 20C with a seperet bec and on the esc's you need to disable the bec on the speed controlers if they even have one ,usually that big of esc does not have bec built in. two 4400mah 4s1p batteries would be fine I would think.

 geryd916 31 points

These are very impressive numbers. Do you have actual readings for amp draw and voltage?

 erh7771 292 points

geryd916 - I get very similar numbers on a 2700kv outrunner pull ~60amps on 4s, lipped and shroud gap reduced with duct tape

 John 131 points

Make one!! or use the 4mm apdator and drill it to 5mm on a lathe

 bongofly 93 points

I'm trying to get this fan to work in a 900g alpha sold here but have not found the right motor batt set up. I'ts got to be just right, light but powerful. This plane is weight sensitive and I don't wont it to fly like a brick, "you know fast but heavy" and not too fun. I hope to get good speed but also nice slow flyby's and landings, will have to make some flaps to get that though. does someone have a good set up, (motor/batt) for this fan plane?

 bongofly 93 points

I'm trying to get this fan to work in a 900g alpha sold here but have not found the right motor batt set up. I'ts got to be just right, light but powerful. This plane is weight sensitive and I don't wont it to fly like a brick, "you know fast but heavy" and not too fun. I hope to get good speed but also nice slow flyby's and landings, will have to make some flaps to get that though. does someone have a good set up, (motor/batt) for this fan & plane combo?