Pierre Rondel
7/09/2010

The Dingo is the latest creation of Vaclav Vojtisek (F3X.eu) and is succeeding the famous Ascot and Short Ascot.

The Dingo differs from the Ascot by the built-in dihedral on the wing that has been removed. The section is also different: the thickness moved from 7.8 to 8% whike the camber has been reduced from 1.8% to 1.7%. The fuselage is shorter than the Ascot even though very close to the Ascot one in term of shape. It is however thinner in diameter. Ballasts are siimilar to the Ascot with 2 short ballast tubes in the wings and 6 in the wing joiner. Ballasts are an option, like the wing bags. In term of construction, many layups are possible to match F3B or F3F requirements. You can almost give the complete layup specification to Vaclav. Mine is a double carbon F3F version. The fuselage is by default 2.4 gHz friendly.

Quality is absolutely top premium, in term of finish & fit and robustness.

Specifications:

For comparison, weight per element are the following depending of the version :

F3B Version

(with Double Carbon DBox option, and carbon V-tail)

F3F Carbon Version
F3F Double Carbon Version

 

  • Left Wing: 582 gr
  • Right Wing: 584 gr
  • Left Tailplane : 42 gr
  • Right Tailplane : 42 gr
  • Fuselage: 281gr
  • Joiner: 85 gr

 

  • Left Wing: 600 gr
  • Right Wing: 597gr
  • Left Tailplane: 42 gr
  • Right Tailplane: 42 gr
  • Fuselage: 294gr
  • Joiner: 89 gr

 

  • Left Wing: 751 gr
  • Right Wing: 753gr
  • Left Tailplane: 47 gr
  • Right Tailplane: 48 gr
  • Fuselage: 307 gr
  • Joiner: 95 gr

 

If you want to see more color layouts, just click here and enjoy !!!

 

Assembly:

 

On my 2 Alliaj HMs and on my Dingo, I tried a new servos with an excellent ratio performance/price: The Inolab HG-D250MG. The only thing you will have to pay attention in certain installation is the height between the fixation legs and the top horn which is higher than the average. The servo is perfect for elevators.

On the dingo, Vaclav provides a very nice system to connect the carbon rods to the servos horns. It works smoothly without any slope. For me this is the perfect solution.

Dingo_A_60
Dingo_A_62
The battery is made of 4 cells Eneloop soldered in position 3+1 in order to let some place in front of the servo tray.
The receiver is a Jeti Duplex R8. The 2 antennas are located at 90° and fixed on the servos tray.
Dingo_A_67
Dingo_A_71

On the wing, servos installation went well. I used Airtronics 94761Z on the flaps.

Airtronics 94761Z Spec's:

  • Weight 22 g
  • Dimensions 27 x 12 x 30 mm
  • Torque 3,9 kg/ 4,8 V
  • Speed 0.15 / 0.12 sec @ 4.8 / 6.0 V
  • Std 3 Pole Motor Plastic and metal gears with two bearings

... and the new Hyperion 95FMD on the ailerons.

Servos lead extend (wire without connectors) are installed in the wings. They seems very thin, but finally they are perfect.

Dingo_A_64

Hyperion 95FMD as been tested on Servormances: It is a software that present in a clever manner the results of the servos test under the same condition, in a repeatable approach. Olivier Seguoin just made available a new database that includes a couple of recent servos like the BMS 555 DMG or the Hyperion 095FMD I was pretty curious about the hyperion as I choose it for the ailerons of my Dingo. The results are convincing compared to the competition (s3150, Aitronics, Graupner, etc ...) and given the price, it offer a good ratio price/performance.

 

The software can be loaded here: http://www.teaser.fr/~osegouin/aeromode/servos.phtml (Sorry chaps, its only in French !)

Then you can upgrade it by copying the 2 files contained in the the zip file in the repository of Servormances: http://osegouin.free.fr/servo/Upgrade_decembre_2009.zip

Thanks Olivier and the Servormances team for your contribution. It is appreciated :) !!

In flight:

My Dingo weights 2.5 kg

To be completely honest, at the beginning, I though that it would be too much, that I made a mistake by ordering such layup, but after a season, I can tell you that the plane doesn't care about the extra weight. It's doesn't feel heavy in the air. I just start to ballast later compared to my "Dingomates".

This plane is just great in flight: very precise and agile, fast and plenty of lift in the turns. What I like very much with the Dingo is the quick acceleration in a F3F run. It is pretty desmonstrative as soon as the lift is coming. The energy retention and the lift during the turn is just great.

However, I would say that the Dingo is more efficient in medium to strong conditions than in small condition where it is averagge from my point of view.

The Dingo is also an excellent sport DS plane, not hard DS because it is not designed for it, but the Dingo is very stable with some reflex flaps (1 to 2 mm up), accelerates pretty quickly, when other planes would loose their speed and energy.

In conclusion, the Dingo is another great plane from Vaclav. It is a very efficient F3F and is very well made. The only negative point for me is the joiner which hosts the ballast. Some slots in the joiner are not free enough (some carbon remains) and the ballast cannot enter completely. This is really a shame on such beautiful plane. When ballasting, first you need to use the rear slots, then mix the center slots and the wing slots. I don't know about the front slots. I'm afraid it moves the CG forward to much.

I purchased some tungsten ballast to obtain 1.5 kg with 4 ballasts in the joiner (instead of 6) and in the wing. This is equivalent to the lead ballast provided with the kit as an option.

There are several Dingos doing the french F3F league and owners are plretty happy with them.

 

 

 

Slope Soaring with a Dingo from Pierre Rondel on Vimeo.

 

Below are the pictures of my Dingo:

Dingo_A_01 Dingo_A_02 Dingo_A_03 Dingo_A_04
Dingo_A_05 Dingo_A_06 Dingo_A_07 Dingo_A_08
Dingo_A_09 Dingo_A_10 Dingo_A_11 Dingo_A_12
Dingo_A_13 Dingo_A_14 Dingo_A_15 Dingo_A_16
Dingo_A_17 Dingo_A_18 Dingo_A_19 Dingo_A_20
Dingo_A_21 Dingo_A_22 Dingo_A_23 Dingo_A_24
Dingo_A_25 Dingo_A_26 Dingo_A_27 Dingo_A_28
Dingo_A_29 Dingo_A_30 Dingo_A_31 Dingo_A_32
Dingo_A_33 Dingo_A_34 Dingo_A_35 Dingo_A_36
Dingo_A_37 Dingo_A_38 Dingo_A_39 Dingo_A_40
Dingo_A_41 Dingo_A_42 Dingo_A_43 Dingo_A_44
Dingo_A_45 Dingo_A_46 Dingo_A_47 Dingo_A_48
Dingo_A_49 Dingo_A_50 Dingo_A_51 Dingo_A_52
Dingo_A_53 Dingo_A_54 Dingo_A_55 Dingo_A_56
Dingo_A_57 Dingo_A_58 Dingo_A_59 Dingo_A_60
Dingo_A_61 Dingo_A_62 Dingo_A_63 Dingo_A_64
Dingo_A_65 Dingo_A_66 Dingo_A_67 Dingo_A_68
Dingo_A_69 Dingo_A_70 Dingo_A_71 Dingo_A_72
Dingo_A_73 Dingo_A_74 Dingo_A_75 Dingo_A_76
Dingo_A_77 Dingo_A_78 Dingo_A_79 Dingo_A_80
Dingo_A_81 Dingo_A_82 Dingo_A_83 Dingo_A_84
Dingo_A_85 Dingo_A_86 Dingo_A_87 Dingo_A_88
Dingo_A_89 Dingo_A_90 Dingo_A_91 Dingo_A_92
Dingo_A_93 Dingo_A_94 Dingo_A_95 Dingo_A_96
Dingo_B_01 Dingo_B_02 Dingo_B_03 Dingo_B_04
Dingo_B_05 Dingo_B_06 Dingo_B_07 Dingo_B_08
Dingo_B_09 Dingo_B_10 Dingo_B_11 Dingo_B_12
Dingo_B_13 Dingo_B_14 Dingo_B_15 Dingo_B_16
Dingo_B_17 Dingo_B_18 Dingo_B_19 Dingo_B_20
Dingo_B_21 Dingo_B_22 Dingo_B_23 Dingo_B_24
Dingo_B_25 Dingo_B_26 Dingo_B_27 Dingo_B_28
Dingo_B_29 Dingo_B_30 Dingo_B_31 Dingo_B_32
Dingo_B_33 Dingo_B_34 Dingo_B_35 Dingo_B_36
Dingo_B_37 Dingo_B_38 Dingo_B_39 Dingo_B_40
Dingo_B_41 Dingo_B_42 Dingo_B_43 Dingo_B_44
Dingo_B_45 Dingo_B_46 Dingo_B_47 Dingo_B_48
Dingo_B_49      

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