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Saturday, June 4, 2016

Stribog F3F from RTGModel

RTGModel (Milan Demčišák) recently released his brand new flagship the STRIBOG. This is the successor of the Rotmilan Midi and the latest F3F glider of a family that started with the Extreme, then the Rotmilan follow by a smaller version with the Rotmilan Midi and it features some nice evolutions that I will detail.

Stribog (Stribozh, Strzybóg, Стрибог) is the god and spirit of the winds, sky and air; he is said to be the ancestor (grandfather) of the winds of the eight directions. The Stribog has a 2.86 m wingspan which is ideally suited for F3F and slope soaring. Wing section is a HN airfoil (Norbert Habe) and different from the Rotmilan from I heard but I don't have much details on this one. The tail section is thinner.

The fuselage uses the same convenient layout than previously and features a canopy, a moulded servo tray, a fuselage ballast tube. The front of the fuselage till the end of the elevator servos is fiberglass and kevlar, then we can see the carbon fabric from this point.

The wing bring some new things like the double carbon layup, or the smaller flap chord at the root.  The servos location is very different. Both flap and aileron servos are now very close to each other at the middle of the wing with a single servo cover. Mine arrived already with the servo frames installed for MKS HBL6625. They are using nice LDS with counter bearing for a slop free control. This will reduce the assembly time, good point.

  • Left Wing (with servo frames in place): 619gr
  • Right Wing (with servo frames in place): 614gr
  • Fuselage with Canopy: 371 gr
  • Left Tail including joiner: 41gr
  • Right Tail including joiner: 41gr
  • Joiner: 84gr
  • TOTAL: 1770gr
  • Ballast: 895 gr

Moulding quality is as usual with Milan Demčišák awesome, with perfect fit of all elements together, very thin join lines, nice paint, etc ... A very nice plane and kit. I will start the assembly soon and post photos of it, as usual. Stay tuned !

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