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Where to buy ducted fans

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Old 09-21-2011, 04:04 PM
  #126  
harralk
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ORIGINAL: AmishWarlord

I see no other way. Your going to have to go with the 300A FAT BOY
I'm starting to think it might be nice to have aBF ESC for bench testing. I shouldn't have to worry about torching that guy. I will need a second 10S battery though to run that thing in parallel...

I just want to know why they made such a massive ESC and what type of plane/heli would it be used in except full size??

"Welcome to HobbyKing airlines...."
Old 09-25-2011, 10:30 AM
  #127  
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Ran the HET 90mm back on the bench with the10S battery.  I only took the throttle up to about 80%, but it still achieved 3.1kg thrust.  The current draw must have been getting close to 100A because I could tell the Turnigy 100A ESC was getting pretty warm (didn't want to risk damaging my CC 120A from flying debris).  The power meter read ~2500W, but I was too nervous about the running fan to get close enough to read the voltage/amperage.  With the proper motor I believe this little fan could produce as much thrust as the ChangeSun.  As for the Electrifly motor I had in there, I think it's pretty well toasted.  It was smoking when I shut it down. 

Now if I just hadn't fried one of my 6S batteries testing the Haoye I could throw the ChangeSun back on with 12S and the 550Kv motor that just came in.  Of course, if the Haoye hadn't blown apart I could test it with 10S and the 700Kv motor that just came in too.  Oh well, I should probably put this project on hold for a while.
Old 09-26-2011, 11:31 PM
  #128  
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Default RE: Where to buy ducted fans

130A Watt meter came in from Hobby King.
Now to solder on some EC5 connectors.
How do I know that I will burn this thing out testing out a 56 Watt set up? LOL

Old 09-28-2011, 01:22 PM
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Default RE: Where to buy ducted fans

Can the HobbyKing 45-70mm inrunner be worked to set cooling holes into the end caps?
Old 09-28-2011, 03:46 PM
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ORIGINAL: ACES&8s

Can the HobbyKing 45-70mm inrunner be worked to set cooling holes into the end caps?
It's funny you ask that, 'cause I just took my 1200Kv apart (didn't want it eating up any more ESC's). From looking at the way it's assembled internally I would say that you probably could make some air holes in the end caps, but they couldn't be very big on the front side due to the mounting holes. My intent for this motor was to custommake an aluminum heatsink that fit between the motor and the fan and cut some small holes on theinside of the fan toallow the air toget in to the motor.

If you'd like I could draw up the dimensions of the motor end caps since Ialready have mine taken apart.
Old 09-28-2011, 03:57 PM
  #131  
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Default RE: Where to buy ducted fans

...and even if you did drill holes on the front cover of the 45-70mm the Hayoe's fan doesn’t allow for much airflow.

At least the heli engines can suck in their own cooling air.


harralk, you didn't tell me you ordred one of those! Lets see it!

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Old 09-28-2011, 03:59 PM
  #132  
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harralk, you didn't tell me you ordred one of those! Lets see it!

I'm sorry, see what?
Old 09-28-2011, 04:35 PM
  #133  
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Default RE: Where to buy ducted fans

That 45-70 motor. You never mentioned getting one of those in.
Old 09-28-2011, 04:38 PM
  #134  
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That's the first motor I ordered for the Haoye. The big blue one in my earlier pics.

At least that's what I'm assuming he's talking about
Old 09-30-2011, 11:43 AM
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Nice video on balancing.

http://www.youtube.com/watch?v=idAIu...eature=related
Old 09-30-2011, 11:49 AM
  #136  
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Default RE: Where to buy ducted fans

Harbor Freight had their laser temp guns on sale for $25 so I picked one up.


Will be nice to know the temp the motors are running at instead of doing the "hot potato" test like this guy. http://www.youtube.com/watch?v=NOFrr...eature=related


Harralk, listen two these duel Hayoe 127mm fans running in this A-10. Man that sounds good! http://www.youtube.com/watch?v=pALPC...eature=related
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