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Apr 13, 2019, 12:37 PM
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Beatnik's Avatar
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Build Log

F7U single 70mm EDF


After the model f4D Skayray , I thought for a long time what needs to be repeated. The color scheme of the US Navy is very contrasting, the planes have a large wing area.
I looked at prototypes for a long time, but the main choice was between a F-3 Demon or F7U Cutlass.
But the demon has very small air intakes.
After comparing the areas, Cutlass was chosen.
Started to draw. Wing area was about 16sq dm (1600 sq cm), with fuselage ~20-22sq dm.
Wing profile is not original - NACA 230xx. Of course the air intakes were increased.
Long ago, I made paper cutlass, I drew inspiration from it.

Wing span: 850mm
Length: 900mm
Actual flight weight: 1250g
Power: EDF70mm 4s - 3300mA
Last edited by Beatnik; Apr 13, 2019 at 02:56 PM.
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Apr 13, 2019, 12:41 PM
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Beatnik's Avatar
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After preparing the sections in 3D, my friend prepared the files for cutting on the CNC machine. And we got the parts ready for assembly!
Apr 13, 2019, 12:51 PM
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Beatnik's Avatar
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We very well provided for everything in 3D, and the assembly was not a problem.
The model is covered with oracover film.
Decals are made from suitable 48 scale, va-212 squadrons, yellow tails color is very contrast in the sky.
Added hardware and controller FY-30, ffor roll stabilization.
Apr 13, 2019, 01:10 PM
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Beatnik's Avatar
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Model because of the low load on the wing flies just fine. It takes off from the hand, and is very easy to control.

RC F7U 70mm EDF Takeoff (0 min 36 sec)


RC F7U 70mm EDF Lowpass (0 min 11 sec)


RC F7U 70mm EDF Landing (0 min 16 sec)
Apr 13, 2019, 07:36 PM
jean-claude Terrettaz
bidule's Avatar
nice model..you still have lot of snow
Congratulations
Apr 14, 2019, 10:45 AM
Dont forget the velcro straps
corsair nut's Avatar
Very cool! Ive flown a couple cutlass models and they were wonderful flyers!
Apr 14, 2019, 01:44 PM
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Wow, if you wanted to cut out a few extra sets of parts, I would certainly buy them the Cutless is a model with only a few kits and the one I am aware of is made from wood, you have a winner there!
Apr 14, 2019, 02:00 PM
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turbonut's Avatar
Very nice work
Latest blog entry: In flight
Apr 14, 2019, 11:30 PM
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Beatnik's Avatar
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Thanks for rating the model!
There is still snow, we are in Siberia :-)
Apr 15, 2019, 10:18 AM
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A real beauty is yours Cutlass, and very cleverly made, I would never think of making the fuse from so short segments. Nice!

Jan
May 01, 2019, 02:01 PM
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Love to have one of your Cutlass's myself. I have the RBC Cutlass kit, but have not built it. So I say kit it!

Richard
May 13, 2019, 02:43 AM
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Rudi's Avatar
Quote:
Originally Posted by joe_crash
Wow, if you wanted to cut out a few extra sets of parts, I would certainly buy them the Cutless is a model with only a few kits and the one I am aware of is made from wood, you have a winner there!
count me in ! Absolut amazing !

best

Rudi
May 13, 2019, 09:38 PM
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jumo004's Avatar
Beautiful design and build !!

Curious as to what cnc program you used to cut those nice parts ..?
May 14, 2019, 01:20 PM
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Podnebesny's Avatar
Initial design was made by Beatnik in Rhino, I just make some improvements to allow this been cut with hot wire. I use Solid for design models.
Then - work in MasterCAM, get code and cut using mach3.
May 14, 2019, 01:35 PM
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Podnebesny's Avatar
foam is similar to depron, 30kg/m3 density. It is lightweight and strong enough


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