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Old Dec 06, 2008, 02:38 PM
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Irvine, Calif USA
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Mini-Review
BAe Hawk by e-flite

I started working on my E-flite Hawk,

http://e-fliterc.com/Products/Defaul...ProdID=EFL8025

which I picked up for $139 at Ultimate Hobbies in Orange CA (they had several on the shelf),

http://www.ultimatehobbies.com/istar...epage.template

It's a really nice model ... the fuse is lightweight molded fg, and the wings and tail surfaces balsa covered in polyester film.

There's a nice video of the Hawk on the above site, flying on a 3S setup:

http://e-fliterc.com/ProdInfo/Files/EFL8025_hi.wmv

The model is quite similar in design to other OK-Model models http://www.okmodel.co.jp/, and has similar features (like the swiss cheese fuse bottom) : http://www.rcgroups.com/forums/showt...=775006&pp=100 [MiG-15], http://www.rcuniverse.com/magazine/a...rticle_id=1001 [L-39] and http://www.okmodel.co.jp/shincyaku/A...4-skyhawk.html [A-4].

Looking at the specs one will see that it's a rather small model, the fuse is big but the wings are tiny. Just as the original. Luckily it is designed around a 69mm fan:

Wingspan: 33.3 in (845mm)
Overall Length: 35.4 in (900mm)
Wing Area: 206 sq in (13.2 sq dm)
Flying Weight: 4346 oz (12191304 g)
Motor Size: 15 DF Brushless Motor
Radio: 4+ channels
Servos: Sub Micro (3 required, 4 with nose gear steering)
Speed Control : 60 amp brushless
Recommended Battery: 3S 11.1V 3000-3300mAh Li-Po
Landing Gear: Optional use, included


Clearly it is meant more as a semi-scale-looking design, and not so much as a speed daemon (there's other models for that).

But hey with Steve C around who knows ?


.
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Old Dec 06, 2008, 03:06 PM
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It is embarassingly easy to put the main components of this arf together to see how it looks

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Old Dec 06, 2008, 03:17 PM
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The 69mm fan slides in from the side - I suppose any half decent 69mm fan will do, but I am using a WeMoTec MiniFan I already have ...

E-flite on their web page has a recommended e-flite fan with a nice inrunner with a kv of 3700. That would mean the one in the video is flying on 3S with about 360W.

I plan to use a Mega 16 or similar on 3S, for around 600W. If I can get a hold of a NeuMotor 1100/2d I might try that instead.

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Old Dec 06, 2008, 03:26 PM
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The various parts & componets are generally lightweight, the fiberglass fuse weighs around 437g, and the built up wings around 142g.

So the empty airframe weight is around 585g...

.
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Old Dec 06, 2008, 03:34 PM
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There's plenty of room in the front for different size 3S packs.

The only thing in the way, possibly, are the elevator/steering servos mounted on one side of the tray.

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Old Dec 06, 2008, 03:41 PM
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Joined Feb 2001
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Quote:
Originally Posted by Herb
Clearly it is meant more as a scale looking design, and not so much as a speed daemon (there's other models for that). But hey with Steve C around who knows ?


.


I'd have one on the way if I could afford it. My Jepe F-16 needs new batteries that I need to save up for and I'm working on revamping my F-86 with a more scale canopy (like clear!) and access hatch.

It's so nice to see a model for sale that really looks scale. It's just a shame they don't know better than to put all of those holes in the bottom of it now that I know you can fly most subjects with just the scale inlets.

Please let us know what you think of it after it flies. I'm curious how the Minifan will like it with no inlet ducting.

Steve C
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Old Dec 06, 2008, 03:43 PM
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Other details such as the fan mounting ring and the elevator linkage setup,

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Old Dec 06, 2008, 03:51 PM
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Swiss cheese bottom - the price you pay on this one for having a close to scale inlet. But then again, there's always the AirSally solution

Somewhat worrysome is the lack of even an inlet ring on the fan mount.

.
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Old Dec 06, 2008, 04:02 PM
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Quote:
Originally Posted by Steve C
... It's so nice to see a model for sale that really looks scale. It's just a shame they don't know better than to put all of those holes in the bottom of it ...
It definitely looks like a Hawk ... A smaller fan could work with those inlets I suppose, but one should keep in mind that the Hawk will always remain a somewhat draggy airframe due to the proportionately large fuselage.

My plan is to keep it light and agile. We shall see.
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Old Dec 06, 2008, 04:30 PM
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polyester resin or epoxy resin fuselage?
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Old Dec 06, 2008, 05:29 PM
Horizon Hobby Employee
Mahomet, Illinois
Joined Aug 2007
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Quote:
Originally Posted by Herb
Swiss cheese bottom - the price you pay on this one for having a close to scale inlet. But then again, there's always the AirSally solution

Somewhat worrysome is the lack of even an inlet ring on the fan mount.

.
Herb,

Inlet ring is already in the airplane. It's the black ring you can see in several of your photos.

David
Horizon
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Old Dec 06, 2008, 07:27 PM
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the wemotec fit perfectly inside the plane ?
what motor you have ?Typhoon EDF-2W 450W ?
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Last edited by Helicoy; Dec 06, 2008 at 07:55 PM.
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Old Dec 06, 2008, 09:02 PM
Carbon fiber is our friend
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United States, CA, Lodi
Joined Feb 2001
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Quote:
Originally Posted by Herb
It definitely looks like a Hawk ... A smaller fan could work with those inlets I suppose,
Have faith my friend. Those inlets could work with the right ducts.

Steve C
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Old Dec 06, 2008, 11:47 PM
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Quote:
Originally Posted by Socomon
polyester resin or epoxy resin fuselage?
That is a good question. It looks like fiberglass resin to me.
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Old Dec 06, 2008, 11:49 PM
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Quote:
Originally Posted by Dave Eichstedt
Herb, Inlet ring is already in the airplane. It's the black ring you can see in several of your photos. David Horizon
Yes I noticed But it looks smallish compared to the standard WeMoTec inlet ring and some other intake rings I am used too. But then maybe it works fine - we shall see.
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