| Auteur | Message | 
 
|  Sujet: Kupper Ku4 Austria "Elefant" scale 1:6 | 
 
| bocorvin 
 Réponses: 25
 Vus: 3179
 
 |  Forum: Constructions Détaillées en Photo   Posté le: 20/10/2025 18:11   Sujet: Kupper Ku4 Austria "Elefant" scale 1:6 | 
| Danke Johannes   
 Der tekst war auf English, Ich war nicht der Flieger, nur ein kurze Zeit. Um klar zu sein habe Ich das ubersetzt mit hilfe von translate;
 
 Gestern machte die Austria ihren maid ...
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|  Sujet: Kupper Ku4 Austria "Elefant" scale 1:6 | 
 
| bocorvin 
 Réponses: 25
 Vus: 3179
 
 |  Forum: Constructions Détaillées en Photo   Posté le: 20/10/2025 15:27   Sujet: Kupper Ku4 Austria "Elefant" scale 1:6 | 
| Hi Sebastian, 
 You saw that well, yes I was very happy; it flew well, everything functioned, the CG was OK and the footage  was OK!
 
 And there is room in my workshop
   
 
 Vincent (DB)
 | 
 
|  Sujet: Kupper Ku4 Austria "Elefant" scale 1:6 | 
 
| bocorvin 
 Réponses: 25
 Vus: 3179
 
 |  Forum: Constructions Détaillées en Photo   Posté le: 20/10/2025 10:49   Sujet: Kupper Ku4 Austria "Elefant" scale 1:6 | 
| Hello everyone, 
 Yesterday the Austria made its maiden, flown by Raymond, who did the first 70% of the build. He wrote the following on the Dutch forum:
 
 Translated with help of Deeptranslate L
 ...
 | 
 
|  Sujet: Kupper Ku4 Austria "Elefant" scale 1:6 | 
 
| bocorvin 
 Réponses: 25
 Vus: 3179
 
 |  Forum: Constructions Détaillées en Photo   Posté le: 14/10/2025 19:07   Sujet: Kupper Ku4 Austria "Elefant" scale 1:6 | 
| Danke Thomas       
 LG
 
 Vincent (DB)
 | 
 
|  Sujet: Kupper Ku4 Austria "Elefant" scale 1:6 | 
 
| bocorvin 
 Réponses: 25
 Vus: 3179
 
 |  Forum: Constructions Détaillées en Photo   Posté le: 14/10/2025 10:10   Sujet: Kupper Ku4 Austria "Elefant" scale 1:6 | 
| Hi Sebastian, 
 Yes, it is quite a lot of lead, almost all my lead supply went into the Ku-4!!
 Because the rudders are hard to actuate with rods or wires without to much hysteresis, Raymond put 3  ...
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|  Sujet: Kupper Ku4 Austria "Elefant" scale 1:6 | 
 
| bocorvin 
 Réponses: 25
 Vus: 3179
 
 |  Forum: Constructions Détaillées en Photo   Posté le: 13/10/2025 14:38   Sujet: Kupper Ku4 Austria "Elefant" scale 1:6 | 
| I looked for the necessary lead I needed 850 gr, 90 grams of which I put separately in a plastic jar, so that I could take it out if necessary. I fixed the rest with epoxy with filler. 
 http://www. ...
 | 
 
|  Sujet: Kupper Ku4 Austria "Elefant" scale 1:6 | 
 
| bocorvin 
 Réponses: 25
 Vus: 3179
 
 |  Forum: Constructions Détaillées en Photo   Posté le: 04/10/2025 21:37   Sujet: Kupper Ku4 Austria "Elefant" scale 1:6 | 
| Hello Sebastian, 
 Thanks for your nice comments
  . The balsa is covered with 25gr/m2 glas fabric & epoxy. Rhat gave a irrigular surface
 ![[argh]](images/smiles/argh.gif) . I used a filler (enduit) acrylic Rapide fro ... | 
 
|  Sujet: Kupper Ku4 Austria "Elefant" scale 1:6 | 
 
| bocorvin 
 Réponses: 25
 Vus: 3179
 
 |  Forum: Constructions Détaillées en Photo   Posté le: 04/10/2025 19:01   Sujet: Kupper Ku4 Austria "Elefant" scale 1:6 | 
| After sheeting the rudders with Diacov, I wanted to organise the nose of the fuselage with the battery and ballast. The battery didn't quite fit behind the nose block, so I placed it one frame backwar ... | 
 
|  Sujet: ANNIVERSAIRES - GEBURTSTAGE | 
 
| bocorvin 
 Réponses: 1747
 Vus: 1237928
 
 |  Forum: Divers...   Posté le: 19/09/2025 15:51   Sujet: ANNIVERSAIRES - GEBURTSTAGE | 
| Hallo Ulli, 
 Herzlichen Glückwunsch zu deinem Geburtstag (je verjaardag
  ) von mir und  auch von Jenny, 
 ![[anniv2]](images/smiles/anniv2.gif)  ![[anniv2]](images/smiles/anniv2.gif)  
 Vincent (DB)
 | 
 
|  Sujet: Schweizer SGU 1-19 avec fuselage en tube | 
 
| bocorvin 
 Réponses: 100
 Vus: 159383
 
 |  Forum: Constructions Métalliques - Stahlrohrkonstruktion   Posté le: 17/09/2025 12:17   Sujet: Schweizer SGU 1-19 avec fuselage en tube | 
| Bonjour Sebastian, 
 Thanks for your comment
   
 It is a bit confusing, the video is a combined one with all the footage I had. So the first flight is again in this video. I already made a new co ...
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|  Sujet: Schweizer SGU 1-19 avec fuselage en tube | 
 
| bocorvin 
 Réponses: 100
 Vus: 159383
 
 |  Forum: Constructions Métalliques - Stahlrohrkonstruktion   Posté le: 16/09/2025 10:16   Sujet: Schweizer SGU 1-19 avec fuselage en tube | 
| It took a while, but more flight(s) have been made. To refresh  what happened, the very first tow went up well, unfortunately the (scale) coupling did not disconnect properly resulting in a hard lan ...
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|  Sujet: Kupper Ku4 Austria "Elefant" scale 1:6 | 
 
| bocorvin 
 Réponses: 25
 Vus: 3179
 
 |  Forum: Constructions Détaillées en Photo   Posté le: 05/09/2025 11:09   Sujet: Kupper Ku4 Austria "Elefant" scale 1:6 | 
| Wih the fins and rudders I had to make a choice. In the FMT drawings, the fins and rudders are flat plates constructed from balsa wood. On the 1:2 model and the original, they are fabric-covered struc ... | 
 
|  Sujet: ANNIVERSAIRES - GEBURTSTAGE | 
 
| bocorvin 
 Réponses: 1747
 Vus: 1237928
 
 |  Forum: Divers...   Posté le: 02/09/2025 09:14   Sujet: ANNIVERSAIRES - GEBURTSTAGE | 
| Hallo Olli, 
 Danke fur die Gluckwunche Olli
   
 Gruss,
 
 Vincent (DB)
 | 
 
|  Sujet: ANNIVERSAIRES - GEBURTSTAGE | 
 
| bocorvin 
 Réponses: 1747
 Vus: 1237928
 
 |  Forum: Divers...   Posté le: 01/09/2025 14:56   Sujet: ANNIVERSAIRES - GEBURTSTAGE | 
| Merci Vincent   Danke Thomas
   Thanks Pat
   Danke Johannes und Rita
   
 Now I surely have to finish the Ku-4 and then fly it
   
 Amicalement, LG, cheers,
 
 Vincent (DB)
 | 
 
|  Sujet: Kupper Ku4 Austria "Elefant" scale 1:6 | 
 
| bocorvin 
 Réponses: 25
 Vus: 3179
 
 |  Forum: Constructions Détaillées en Photo   Posté le: 25/08/2025 12:51   Sujet: Kupper Ku4 Austria "Elefant" scale 1:6 | 
| I continued to sheet all the surfaces. I thought if I coated it with glass cloth and epoxy the surface becomes much firmer and it also adds strength. I wanted to keep it light. I ordered 25grams glass ... | 
 
|  Sujet: Kupper Ku4 Austria "Elefant" scale 1:6 | 
 
| bocorvin 
 Réponses: 25
 Vus: 3179
 
 |  Forum: Constructions Détaillées en Photo   Posté le: 12/08/2025 20:20   Sujet: Kupper Ku4 Austria "Elefant" scale 1:6 | 
| Hello Sebastian, 
 Merci pour ton interet.
 Oui cette une planeur exceptionelle, 30 metres envergure!!
 Cette modele est construit par les plan de FMT
 L''histoire complet est aux MBF Neerlandaise:
 ...
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|  Sujet: Kupper Ku4 Austria "Elefant" scale 1:6 | 
 
| bocorvin 
 Réponses: 25
 Vus: 3179
 
 |  Forum: Constructions Détaillées en Photo   Posté le: 11/08/2025 14:01   Sujet: Kupper Ku4 Austria "Elefant" scale 1:6 | 
| Now that the fuselage was coming along nicely, I decided to start working on the wings. First of all, I would like to compliment Raymond on how he built the wings and took care of the wiring.
 To il ...
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|  Sujet: Kupper Ku4 Austria "Elefant" scale 1:6 | 
 
| bocorvin 
 Réponses: 25
 Vus: 3179
 
 |  Forum: Constructions Détaillées en Photo   Posté le: 01/08/2025 15:21   Sujet: Kupper Ku4 Austria "Elefant" scale 1:6 | 
| I continued with the nose of the fuselage, glued 0.6 mm plywood on both sides of the skate and the lower planks of the fuselage. Once the fuselage has been glassed (with 25 gram cloth) the skate it ...
 | 
 
|  Sujet: Kupper Ku4 Austria "Elefant" scale 1:6 | 
 
| bocorvin 
 Réponses: 25
 Vus: 3179
 
 |  Forum: Constructions Détaillées en Photo   Posté le: 19/07/2025 12:19   Sujet: Kupper Ku4 Austria "Elefant" scale 1:6 | 
| Building Kupper Ku 4 (Elefant) scale 1:6, built from the  FMT plans 
 Fotor had previously owned an Elefant, see this link
 
 www.retroplane.net/forum/viewtopic.php?p=68869
 
 but is broke its wing  ...
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|  Sujet: Schweizer SGU 1-19 avec fuselage en tube | 
 
| bocorvin 
 Réponses: 100
 Vus: 159383
 
 |  Forum: Constructions Métalliques - Stahlrohrkonstruktion   Posté le: 14/05/2025 12:59   Sujet: Schweizer SGU 1-19 avec fuselage en tube | 
| Danke Johannes, und die SGU ist, wie sagt mann das, ziemlich stark   
 Sebastian, I had some unreliabilty problems with my hook of the Nemere 330cm span, it was a miniature of the original one. So  ...
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|  Sujet: Schweizer SGU 1-19 avec fuselage en tube | 
 
| bocorvin 
 Réponses: 100
 Vus: 159383
 
 |  Forum: Constructions Métalliques - Stahlrohrkonstruktion   Posté le: 13/05/2025 10:49   Sujet: Schweizer SGU 1-19 avec fuselage en tube | 
| Bonjour a tous, 
 The SGU 1-19 had made its first flight. The prototypical tow hook didn't work as it should, but it flew well, that was nice.
     The landing was not nice,  I didn't wont to fly ...
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|  Sujet: De Havilland DH2 réplica 1/3.2 | 
 
| bocorvin 
 Réponses: 161
 Vus: 61959
 
 |  Forum: Remorqueurs et Avions Rétro/Oldtimer Schleppflugzeuge   Posté le: 21/04/2025 09:23   Sujet: De Havilland DH2 réplica 1/3.2 | 
| Bonjour Pierre, 
 Le pilote est genial!
 ![[clap]](images/smiles/Clap.gif)  ![[clap]](images/smiles/Clap.gif)  ![[clap]](images/smiles/Clap.gif) | 
 
|  Sujet: De Havilland DH2 réplica 1/3.2 | 
 
| bocorvin 
 Réponses: 161
 Vus: 61959
 
 |  Forum: Remorqueurs et Avions Rétro/Oldtimer Schleppflugzeuge   Posté le: 18/04/2025 11:59   Sujet: De Havilland DH2 réplica 1/3.2 | 
| Hello Pierre, 
 You are doing a great job, I very much like the way you use all kinds of materials!
 ![[amen]](images/smiles/amen.gif)  ![[amen]](images/smiles/amen.gif)  ![[amen]](images/smiles/amen.gif)  
 Good continuation,
 
 Vincent (DB)
 | 
 
|  Sujet: Schweizer SGU 1-19 avec fuselage en tube | 
 
| bocorvin 
 Réponses: 100
 Vus: 159383
 
 |  Forum: Constructions Métalliques - Stahlrohrkonstruktion   Posté le: 04/04/2025 11:38   Sujet: Schweizer SGU 1-19 avec fuselage en tube | 
| Hallo Sebastian Merci
  et oui les bandes rouges me plaise aussi! 
 Hallo Johannes,
 
 Danke
  , vielleicht fliegt er ahnlich wie die Grune Post! 
 Amicalement, LG,
 
 Vincent (DB)
 | 
 
|  Sujet: Schweizer SGU 1-19 avec fuselage en tube | 
 
| bocorvin 
 Réponses: 100
 Vus: 159383
 
 |  Forum: Constructions Métalliques - Stahlrohrkonstruktion   Posté le: 02/04/2025 14:58   Sujet: Schweizer SGU 1-19 avec fuselage en tube | 
| Bonjour a tous When the weather was not good for flying, I assembled the Schweizer in the clubhouse in the hope that someone had a idea for the colour scheme. Fortunately, that turned out to be the  ...
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|  Sujet: Rhönadler 32 au 1/3.5 à Lolo | 
 
| bocorvin 
 Réponses: 56
 Vus: 51333
 
 |  Forum: Constructions Détaillées en Photo   Posté le: 02/04/2025 14:43   Sujet: Rhönadler 32 au 1/3.5 à Lolo | 
| Hello Lolo, 
 That is a wunderful job
 ![[amen]](images/smiles/amen.gif)  ![[amen]](images/smiles/amen.gif)  ![[amen]](images/smiles/amen.gif) and 5 meters is quite a kite! Nice to read all your builds, all the best with finishing it!
 
 Amicalement,
 
 Vincent (DB)
 | 
 
|  Sujet: Karakan im Maßstab1:3,5 | 
 
| bocorvin 
 Réponses: 73
 Vus: 29882
 
 |  Forum: Online Baubericht   Posté le: 24/03/2025 20:42   Sujet: Karakan im Maßstab1:3,5 | 
| Hello Ulli, 
 Die Arbeit sieht grossartig aus
 ![[amen]](images/smiles/amen.gif)  ![[amen]](images/smiles/amen.gif)  ![[amen]](images/smiles/amen.gif) , I have lots of admiration! 
 LG,
 
 Vincent (DB)
 | 
 
|  Sujet: Nemere scale 1/6 | 
 
| bocorvin 
 Réponses: 111
 Vus: 149704
 
 |  Forum: Constructions Détaillées en Photo   Posté le: 24/03/2025 20:40   Sujet: Nemere scale 1/6 | 
| Bonjour a tous, 
 Last saturday I visited the annual tow meeting in Kampen. There was a lot of wind and the airspace to get altitude was quite limited. The first tow we ended downwind.  The Nemere ha ...
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|  Sujet: Schweizer SGU 1-19 avec fuselage en tube | 
 
| bocorvin 
 Réponses: 100
 Vus: 159383
 
 |  Forum: Constructions Métalliques - Stahlrohrkonstruktion   Posté le: 21/03/2025 16:22   Sujet: Schweizer SGU 1-19 avec fuselage en tube | 
| Hello Sebastian, 
 Thanks for yout comments
  . I guess that the maiden will take place in the coming weeks, I'll post that of course. About the painting; it needs some but it also would be nice  ...
 | 
 
|  Sujet: Schweizer SGU 1-19 avec fuselage en tube | 
 
| bocorvin 
 Réponses: 100
 Vus: 159383
 
 |  Forum: Constructions Métalliques - Stahlrohrkonstruktion   Posté le: 19/03/2025 16:59   Sujet: Schweizer SGU 1-19 avec fuselage en tube | 
| Hello everyone, 
 Before sheeting, I mounted the wings to check the length of the struts
 
 http://www.retroplane.net/forum/images/uploads/bocorvin/IMG_4118__Aangepast__133.jpg
 
 The tubular steel  ...
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