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Old Jul 16, 2002, 07:35 PM
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FlyingW's Avatar
Long Valley, NJ, USA
Joined Dec 2001
1,733 Posts
EDF Project for FAI 40 4T

I want to build and fly a ducted fan electric jet. I also want to use my FAI 40 4T. I am advised that it could turn a 4" fan. Who, what, where, etc. can I find out more about the possibilities?

How can I tweak Electricalc to estimate a 4" fan?

Thanks for any ideas.
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Old Jul 16, 2002, 08:50 PM
shut up & fly
hoser's Avatar
United States, FL, Miami
Joined May 2001
3,894 Posts
I tried a 6T on a 5" fan and it barely worked, 4.5 to 5 pounds of thrust and 17,000 rpm (low end for the HW-750) on 20 cells and 50+A

SO, I always thought it should work well on the HW-730, but you will need the adapter rework for the shaft since it's not 5mm.

now the 4T is a bit hotter but should work
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Last edited by hoser; Jul 16, 2002 at 08:58 PM.
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Old Jul 16, 2002, 10:24 PM
EDF all the way!
bruff's Avatar
Gilbert, Az
Joined Jun 1999
8,160 Posts
Astro FAI

I flew an EJF F-86 using a WeMoTec HW-730 fan and a Astro 25 FAI on 16 cells. Flew well. the 40 should do great.
Bob Ruff
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Old Jul 17, 2002, 02:14 AM
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Gordon's Avatar
Joined Aug 2000
3,936 Posts
Re: Astro FAI

Originally posted by bruff
I flew an EJF F-86 using a WeMoTec HW-730 fan and a Astro 25 FAI on 16 cells.
What was the current draw Bob?

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