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Electric Ducted Fan Jets Discuss electric ducted fan jets here including setup tips, power systems, flying techniques, etc.

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Old 09-15-2011, 12:04 AM   #1
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Default 70mm edf speed/ thrust upgrade?

Hi pilots-

hopefully you can point me in the right direction, i am thinking up upgrading my 70mm f-35, it currently stock and does not hold up well at all in terms of speed and flight time. I am currently running a 4c 2200 20c with a 2750kv and 45amp esc.

i am hoping to upgrade to a longer flight time 1:1 (hopefully)thrust to weight. so i ca get a few more minutes and do some "climbing".

I am thinking of going 60amp esc, 3000 mah 30c and a 2800kv edf for it.

My question is, with a 60amp esc, what is the highest "C" rated battery i can use without burning the esc or motor?(i think 30c=60amps?) without burning up my electronics. Right now my current stock 20c battery swells and is scortching hot after 3-4 min of mild throttle.

sorry if this posting has shown up before..

Thanks again!!

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Old 09-15-2011, 09:00 AM   #2
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Old 09-16-2011, 02:44 PM   #3
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As for timewise, you will only average 3-5 min of flight time for any setup. I have played with 64, 70 and 80 mm and even with throttle management, the best I could get was less than 5 min. If you run too long, you will do damage to the life of your lipo battery.
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