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Old Jun 09, 2006, 12:42 PM
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New Product
70mm and 90mm EDF units available for Brushless

70mm and 90mm fan units are available at www.TrueRC.com (esc and motor section)

Best Wishes,

Dan
TrueRC
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Old Jun 09, 2006, 03:02 PM
EDF rules... :)
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Ok show us, they are apparently not on the site.

Eric B.
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Old Jun 09, 2006, 03:05 PM
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Try this link and scroll all the way down
http://home.comcast.net/~truerc/esc/escNmotor.htm

If you still do not see them press F5 to refresh your browser

Dan
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Old Jun 09, 2006, 03:06 PM
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bottom of the page
http://home.comcast.net/~truerc/esc/escNmotor.htm
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Old Jun 09, 2006, 03:09 PM
Mad Max meets the Thinker
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Quote:
Originally Posted by AirX
Ok show us, they are apparently not on the site.

Eric B.
You click the Esc and Motor link and they are at the very bottom

Cyb
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Old Jun 09, 2006, 03:11 PM
EDF rules... :)
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Ok I see the airpower fans.

Eric B.
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Old Jun 09, 2006, 05:57 PM
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Anyone tried one of these yet?

Matty
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Old Jun 09, 2006, 07:40 PM
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Interesting that the 90mm fan shows thrust at maximum power is 20N, which is about 4.4 pounds. It then says that its capable of over 5 pounds of thrust. Unashamed hype?
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Old Jun 09, 2006, 07:52 PM
EDF rules... :)
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I have seen some tests from others that substantiate thier claims but it will take a heavy motor to dissipate the heat from the watts absorbed from efficiency losses.

Eric B.
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Last edited by AirX; Jun 09, 2006 at 07:52 PM. Reason: spelling
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Old Jun 09, 2006, 08:39 PM
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Quote:
Originally Posted by Keithf
Interesting that the 90mm fan shows thrust at maximum power is 20N, which is about 4.4 pounds. It then says that its capable of over 5 pounds of thrust. Unashamed hype?

We would not dare to BS. Its proven results.


Dan
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Old Jun 09, 2006, 11:45 PM
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Quote:
Originally Posted by Keithf
Interesting that the 90mm fan shows thrust at maximum power is 20N, which is about 4.4 pounds. It then says that its capable of over 5 pounds of thrust. Unashamed hype?
Read review/test from the link below

http://www.airpowernet.com/twe/produ...6b95c63f338937

It produced 5.1 lb
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Old Jun 10, 2006, 01:42 AM
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We have both AirPower 70mm & 90mm. The 90mm can produced 100oz (6.24lb) or more thrust.

This is another review
http://www.wattflyer.com/forums/show...?t=5648&page=2
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Old Jun 10, 2006, 04:41 PM
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any review on the 70mm fan?
Thanks.
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Old Jun 10, 2006, 07:47 PM
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I am working on building an EDF thrust stand.

I tested 70mm EDF with 10V motor driver and our 450TH 2950kv motor
at full throttle (using the software from our STORM ESC) it delivered 20+ oz of thrust JUST BLOWING AT THE SCALE

I will get some more accurate results soon.


Dan
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Old Jun 10, 2006, 07:55 PM
EDF rules... :)
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Well if your going to test, do it right. Aiming the efflux at the scale is the wrong way to test mainly because it introduces a pressure component to the physics that is not present in a flight configuration. Make a stand that will focus the efflux away from the scale so the fan is pushing towards the scale and you will be measuring exactly what is being produced as thrust and not because of a deviation of pressure.

Now if you want to test me on this just point the efflux at the scale and move it 6 inches away from the scale and then move it 2 inches away from the scale the weights the scale will measure will be different becuase a difference in pressure(expansion of air in all directions). Now take and make a structure to hold the fan pointing the efflux away from the scale and measure it force, move it 6 inches away from the scale and it will be the same force, hence no pressure change inttroduced into the physics making the thrust.

Eric B.
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Last edited by AirX; Jun 10, 2006 at 08:04 PM.
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