Notices
Electric RC Jets Discuss rc electric ducted fan or radio control prop jets here.

90mm fan specs

Old 05-03-2011, 09:39 PM
  #1  
mice1m
Junior Member
Thread Starter
 
Join Date: Jun 2009
Location: NSW, AUSTRALIA
Posts: 22
Likes: 0
Received 0 Likes on 0 Posts
Default 90mm fan specs

Haoye 90mm fan with lip added

9 cell 4000mah pack120a hvescplatinum proor k force(same esc) ""$115"swang hobbiesor hobbyking.com


Hobbyking black 500h 1600kv heli outrunner$22

31.58 volts
124.88 amps
3992.4 watts

4.9 kilo"s or 10.8 pounds thrust..................motor+ fan $42...306grams ....fan needs balance before you try this...........
Old 05-03-2011, 11:10 PM
  #2  
Extreme_RC
 
Extreme_RC's Avatar
 
Join Date: Oct 2008
Location: , AUSTRALIA
Posts: 424
Likes: 0
Received 0 Likes on 0 Posts
Default RE: 90mm fan specs

ORIGINAL: mice1m
Haoye 102mm fan (wemo eater)_ $20 atHK
Turnigy 600 H37404910kv outrunner $39 at HK
Tunigy K Force 120a HV esc$120 at HK
motor+ fan = 535grams or 19oz
11 cell
38.44 volts
120.68 amps
4792.2 watts scales MAXED OUTat ""SIX"" kilo"s or 13.2 pounds thrust..................cheap cheap
all running warm. 35000 rpm''' Haoye best fan on the market..... perfect patend.........
Haoye 90mm fan, hk 500h 1600kv heli outrunner ,,8 cell, 2700w, 4kg or 8.8 lb thrust............ wemo eater....
< Message edited by mice1m 5/4/2011 10:34 AM >
The above shows us that either your equipment is too poor to test anything or you are just making up the numbers to suit yourself (I vote the later).
38.44vmultiplied by120.68A = 4639 Watts, not 4792...
38.44v = 3.49v per cell, the battery is loaded up pretty hard and wont like running at 120A for long...
35000RPM divided by 38.44 volts = 910Kv, amazingly thats the Kv of the motor, so this means the motor can spin at its unloaded RPM even when loaded up at 35K rpm with a 100mmamp hog rotor...
LOL LOLLOL

Old 05-04-2011, 12:32 AM
  #3  
mice1m
Junior Member
Thread Starter
 
Join Date: Jun 2009
Location: NSW, AUSTRALIA
Posts: 22
Likes: 0
Received 0 Likes on 0 Posts
Default RE: 90mm fan specs



Watt meter....shows....

volts is the maximum voltage DROP which means the lowest !!!!!!

Amps and watts are the highest..........it doesnt calculate maximum watts by using the lowest volts.............

Yes 4000mah 20c lipo"s arenot good for testing because the "Volts Drop",...30c 5000 would do.

sorrytacho has a flat bat soi guest revs at lowest volts..under load...

ALL MY TESTS ARE TRUE
Old 05-06-2011, 06:44 PM
  #4  
ACES&8s
Senior Member
 
ACES&8s's Avatar
 
Join Date: Dec 2005
Location: Manchester, CT
Posts: 381
Likes: 0
Received 0 Likes on 0 Posts
Default RE: 90mm fan specs

I wanted to say...the Hoaye fan is very difficult to balance, AND the collet for mounting has to have a cross hole drilled into it to hold the shaft for tightening the nut, and also it's most often off-center.

4700 watts proly wasted, a better setup for 90mm and up needs to be trued in a machine shop, like the Wemo Rotors.

My Hoaye 7 blade fan was a power hog...scraped the fan, in lieu of a wemo, for a 4 cell motor, since I'm an idiot for using 4 cell, but they are 40-50C lipo. For ordinary low-cost lipo 6-10 cell on 90mm is best. A 6 cell pack and 100 amp ESC can max 2200 watt, 8 cell can max 3200 watt, etc. Running more than 100 amp causes LOTS of line loss unless your cables are Huge! Think about it...4 kilowatt should honestly get more like 18 to 20 lbs. static. Going Thevenin route...12 pounds of thrust should use maybe 3.2K

I apologize for the negative feedback. However I could offer...Show a vid on Youtube, of an ordinary 9 cell, 20c pack on a 90 with a static thrust meter, of some sort.

I would like to see...giving doubt

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off


Thread Tools
Search this Thread

Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service - Do Not Sell My Personal Information -

Copyright 2021 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.