The Next Generation of full metal EDF with PATENT design - Page 17 - RC Groups
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Jan 20, 2012, 11:42 AM
You win again gravity!
SMorrisRC's Avatar
I guess it depends on the ESC used. I'm running mine on Hobbywing Fentiums mainly, but I also have an older (red) unit running on a cheapo HK red-brick ESC. I've left all on the default timing and never had a problem so far.
Maybe its to do with pwm frequency (if it wasn't simply a manufacturing fault)? I've had edf make an alarming 'cough' before, which could do some damage, and that was down to poor esc programming on my part. I think mine is set to either 8 or 16khz, but can check (I left the redbrick with everything on default).
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Jan 20, 2012, 06:31 PM
rudiwing's Avatar
I made a testrun with automatic timing and everything was OK with the new fan. Next time i will look for the pressure of the fans...
May 01, 2012, 06:25 AM
Registered User
Some videos of Mercury 90A
小葉的全金屬大飆風 (3 min 5 sec)

小葉的大飆風/2 (2 min 54 sec)

2012-04-28 Nemo's M2000 Maiden Flight (2 min 39 sec)
Jun 07, 2012, 08:56 PM
Not enough hours in the day
Slaanesh's Avatar
Very nice, is HobbyKing going to stock these 90mm EPF all alloy fans as well as the 64mm versions?
Jun 08, 2012, 08:26 AM
You win again gravity!
SMorrisRC's Avatar
Jun 08, 2012, 06:25 PM
Not enough hours in the day
Slaanesh's Avatar
You know I pretty much always check out the HK Vids but the last one I saw before posting my question was the video just before the Mercury 90A!
I wanted to try a Lander Fan but this one looks more durable and also has interesting upgrade potential.
Last edited by Slaanesh; Jun 08, 2012 at 10:16 PM.
Jun 09, 2012, 01:13 AM
You win again gravity!
SMorrisRC's Avatar
There's no comparison, these are far superior quality to lander. Only question mark is the price HK will sell for.
Aug 30, 2012, 06:18 PM
Registered User
Alpha10's Avatar
Any news on when the 74 Series will be out?
Oct 20, 2012, 12:34 PM
Registered User
Alpha10's Avatar
I just spoke with an EPF rep and he said they plan on releasing the 74mm Mercury in December.
Jan 03, 2013, 02:52 PM
Registered User
Inside a Mig-15
mig-15 edf jet like sound (3 min 17 sec)
Jan 28, 2013, 07:15 PM
Registered User
Originally Posted by EPF HOBBY
Thrust Curve as below:
I get a burn smell after 1 minute on 4S 3300mA 30C pack and the unit get hot so I had to shut it down. Therefore I fly with 4S and and use full power only for take off and short burst.. most of the time I had to keep it around 70% in order to increase reliability. I had nearly 80 flight with my 4700kv in my Mig-15 now.

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