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        Help! EDF Ducted Fan Unit 7 Blade 3.5inch

#1 NowoN Jun 13, 2009 07:11 AM

EDF Ducted Fan Unit 7 Blade 3.5inch
 
Hello. Im new to this forum and for EDF systems. i have this EDF and 80A HiModel Pro ESC
Im looking for help with: With motor i need for this EDF for best performance? Actualy need a 2000g of static thrust.
And what is better for this EDF high KV on 3S Li-po or eqivalent RPM on 4-5 S Lipo ?
What is the best RPM range for this EDF ? im read some reviews about it and a lot of ppl getting 2100 g thust on 29000 rpm

Thanks.

#2 Janusz Jawien Jun 13, 2009 09:08 AM

Welcome to the RCGroups!
This fan you are asking about is called Hayole 3.5", if you do search you will find plenty of data about it in this forum.
Make sure that you will balance it before running!
I am planning of using this fan with Scorpion 3026 1400kV - this $75 motor seems to me as a most economical solution.
I bet that others, more experienced with DFs guys will chip in with help...

#3 RWCLOUD Jun 13, 2009 02:45 PM

Quote:

Originally Posted by Janusz Jawien
Welcome to the RCGroups!
This fan you are asking about is called Hayole 3.5", if you do search you will find plenty of data about it in this forum.
Make sure that you will balance it before running!
I am planning of using this fan with Scorpion 3026 1400kV - this $75 motor seems to me as a most economical solution.
I bet that others, more experienced with DFs guys will chip in with help...


What battries and how many do you plan on using??

#4 NowoN Jun 13, 2009 04:59 PM

RWCLOUD
even i dont know 4s Li-po 4000 mAh
i can buy motor only from Hobbycity The KD or Turnigy inrunners marked with numbers like 36-50-08. So what size of motor i need?

Or another way. What is the best config for this EDF, to get high ans stable thrust like 1800-2000 g.
Its my first try in EDF. Thats why my questions is so stupid :)

Tnx

#5 marell01 Jun 13, 2009 05:48 PM

Hi NowoN, welcome to this fantastic commiunity.
Ive been done some testing for this fan. Please check this tread : Test of Haoye 3.5 " FAN
Also this post for finding a good motor from hobbycity Hobbycity motor for 90mm fan

#6 NowoN Jun 14, 2009 05:44 AM

marell01 tnx .
Very usefull data.

#7 NowoN Jun 15, 2009 04:22 AM

May be some kind of outrunner can be installed in this EDF ???

#8 PulseFusion Jun 15, 2009 06:52 AM

yeah i bought the 89mm+outrunner combo from HC. The outrunner it comes with is ~1670kV and it's a bit of a no mans land as i dont want to run 5S (4S too low 6S too high).

i'm running this combo on an 1.6m F20 and i've pegged the max throttle in the tx to max it out at 1100W only as the batteries are two 3S 2200mAh 20C's and i don't want to fry them. once i have more flights on them i have plenty of battery room and i'm planning on 6S 2P'ing them and putting about 1.9kW into this combo on 6S. Not sure it'll work but i'll give it a go when the time comes.

I think for 4S i'd go for about a 2000-2200kV motor for about 1.0-1.3kW out of two 4S2200 for a total of 4S 4400mAh. You'd have high current and voltage losses though.
on 4S 4400:1.3kW 90A (safe option, should handle power, these motors get hot though)
http://www.hobbycity.com/hobbycity/s...idProduct=6676
on 4S 5000:1.5kW 100A (dunno, maybe too much power)
http://www.hobbycity.com/hobbycity/s...idProduct=6529
on 4S 4400:1.4kW 95A (but will probably melt)
http://www.hobbycity.com/hobbycity/s...idProduct=6531


When I melt the motor that came with this combo I'm going to buy one of these:
http://www.hobbycity.com/hobbycity/s...idProduct=8485
and run it 6S2200 1.25kW 20C or 7S4400 (lots more batteries) for 2kW

i have a lot of 3S2200's and 4S2200's so all the setups i have are multiples of these...

#9 NowoN Jun 15, 2009 06:45 PM

Quote:

When I melt the motor that came with this combo I'm going to buy one of these:
http://www.hobbycity.com/hobbycity/...?idProduct=8485
and run it 6S2200 1.25kW 20C or 7S4400 (lots more batteries) for 2kW
I got this outrunner and 2x of ZIPPY_Flightmax_4400mAh_3S1P_15C


i got in total 4400 6s1p. How do u think is my HiModel 80A Pro Series good for it? I hope it is.

Actualy i need i bit more than 1400g thrust but at this time nozzle thrust looking verticaly down.

#10 PulseFusion Jun 16, 2009 03:41 AM

Yeah that should draw about 60A... 2x 3S4400's may be a bit heavy... 2200's are about as small as you can possibly go, 3000's may be the best size for this setup, 4400's will fly for ages but may be pretty darn heavy and difficult to balance... what's it going in?

#11 NowoN Jun 16, 2009 09:18 AM

oh its for X-35 STOVL

#12 PulseFusion Jun 17, 2009 03:19 AM

gosh, and by stovl, you mean you're making an F35 that looks and smells right but not actually going to try to do one of the hardest things with ducted fans known to man (STOVL/VTOL)... good luck if so, pics and vid... ;-)

#13 Brutikus Jun 17, 2009 05:35 AM

Is there a link to an article explaining fan blades and kv?
Havnt found much on google.
Mostly threads about what specific setups people are using.
But i need ti understand WHY certain motors are better for specific edf blades.

I am currently running a 5 blade EDF, 64mm diameter, 3500kv outrunner, 4S 2200mah batt, 60A esc.

Not enough speed.
After a 3 minute flight, battery, motor, and ESC still relatively cool.
No indications of overamping.

What should i do to increase top speed.
The jet is a Freewing L39 Albatross.
What effect will the 7 blades fan have if i drop it into this power system?

#14 NowoN Jun 17, 2009 03:53 PM

for EDF 64 5 blades u need 4300-4600 Kv

#15 NowoN Jul 08, 2009 03:13 AM

Work in progress. Another question. Anyone runEDF89_with_D3468kv on 6S config and what is motor Kv?? 3468Kv ? OMG on 6S its near 75000 rpm !! EDF calculator talks 238km/h :eek:


So anyone have rigth data on this combo?


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