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Apr 12, 2017, 04:03 PM
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Build Log

F-16 70mm edf by Freewing


I picked up one of these as an "airframe only" from MRC for $159 :

http://sz-freewing.com

https://www.motionrc.com/products/fr...mm-edf-jet-arp

They also sell it (the airframe only but with LG) for $104 in China :

https://www.aliexpress.com/item/RC-a...782118518.html

It seems slightly larger than my JePe F-16 (35" ws vs 31" ws) :

https://www.rcgroups.com/forums/show...by-Jepe&pp=100

so a rough comparison will be interesting.

On this one the wingspan is 88 cm and the length is 131 cm, whereas the real one has a 9.96m wingspan at a 15.06m length

https://en.wikipedia.org/wiki/Genera...ighting_Falcon

so the model is in the ~ 1:11.4 scale range.

I plan to possibly have a tailerons only setup, to reduce wing drag.

Fan will be an 70mm one with quality inrunner, and a 150A YEP esc I already have.

Finish will be in a simple 1984 Belgian TigerMeet scheme, which I have done a few times before ...

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Edit: Video added Oct 22

F-16 70mm EDF by Freewing with WeMoTec EVO fan (3 min 17 sec)


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Takes off and lands like a feather :

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F-16 FW 70mm edf takeoffs and landings (1 min 14 sec)
Last edited by Herb; Mar 12, 2018 at 04:14 PM.
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Apr 12, 2017, 04:11 PM
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Fan setup will be either 70mm WeMoTec MiniFan EVO, or a (properly balanced) 80mm FMS fan, as I discussed here earlier :

https://www.rcgroups.com/forums/show...EDF-fan&pp=100

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Last edited by Herb; Apr 15, 2017 at 11:55 AM.
Apr 12, 2017, 04:16 PM
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Might try a Schuebeler DS-30 carbon fan in it at some point, possibly, or perhaps just the shroud to save some weight ...

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Apr 17, 2017, 06:20 PM
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Here's a side-by-side size comparison to my hollow molded composite JePe F-16, https://www.rcgroups.com/forums/show...by-Jepe&pp=100

which is slightly smaller (31" ws vs 35" on the FW one) and yet flew/flies on a 90mm fan

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Last edited by Herb; Apr 17, 2017 at 06:39 PM.
Apr 17, 2017, 06:23 PM
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It's quite comparable in size to the Freewing F-104 70mm edf, https://www.rcgroups.com/forums/show...reewing&pp=100

and a bit smaller than my larger Freewing F-16 90mm, https://www.rcgroups.com/forums/show...reewing&pp=100

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Apr 17, 2017, 06:37 PM
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The WeMoTec MiniFan EVO 70mm fits right in nicely

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Apr 24, 2017, 10:52 AM
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The 62mm outlet is way too large for a decent 70mm fan setup, so that will have to be fixed, plus that step looks pretty bad.

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Apr 26, 2017, 01:38 PM
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Foam hinges don't work too well on fast EDF's, they tend to fly off eventually, so I rehinged everything using blenderm hinge tape.

https://www.amazon.com/dp/B00HHR4RHQ?th=1

It is the exact same one that Dubro / Tower has been selling for years :

https://www.towerhobbies.com/cgi-bin...1p?&I=DUBQ0916

Reinforcements were glued in using pu glue, and servo openings were closed with tape.

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Last edited by Herb; Jan 04, 2018 at 10:19 PM.
Apr 26, 2017, 01:40 PM
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A simple mylar exhaust tube was cut out and secured with tape.

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Apr 26, 2017, 01:41 PM
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To install the fan, that plastic cheesegrater had to come out ... Also it will be easier to install the ESC if that ply tray comes out as well.

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Apr 26, 2017, 01:44 PM
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Mylar exhaust, 70mm WeMoTec MiniFan EVO and esc trial fitted

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Apr 26, 2017, 02:46 PM
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This is incidentally the stock $46 unit that comes with the 6S Freewing 12bl plastic fan / outrunner setup,

https://www.aliexpress.com/item/New-...528302267.html

3048-2150kv outrunner motor ... https://www.motionrc.com/collections/motors/freewing

I don't own one (fan or motor), so I really have no idea how it performs...

It seems rather similar to these other inexpensive "don't fit in the shroud" outrunner motors :

https://hobbyking.com/en_us/turnigy-...-70mm-edf.html

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Last edited by Herb; Apr 27, 2017 at 12:34 PM.
Apr 26, 2017, 07:00 PM
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Herb what motor is that in the evo?


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