RETROPLANE.net Index du Forum
FAQ - Charte - Rechercher - Fichiers - Map - Membres - S'enregistrer - Annuaire - Vérifier ses messages privés - Connexion

Slingsby King Kite 1/4
Aller à la page Précédente
1, 2, 3, 4, 5, 6, 7, 8 Suivante

 
Poster un nouveau sujet   Répondre au sujet    RETROPLANE.net Index du Forum -> Constructions Détaillées en Photo
Voir le sujet précédent :: Voir le sujet suivant  
Auteur Message
bocorvin
Maniaco Posteur
Maniaco Posteur


Inscrit le: 17 Aoû 2015
netherlands.gif

Localisation: Hillegom
Âge: 74 Vierge

MessagePosté le: 01/12/2020 11:06    Sujet du message: Répondre en citant

Hallo Thomas,

Nochmahl vielen Dank fur alle info Very Happy Very Happy

Vincent (DB)
Revenir en haut de page
Voir le profil de l'utilisateur Envoyer un message privé Envoyer un e-mail  
Mad Doc
Fidèle Posteur
Fidèle Posteur


Inscrit le: 08 Juil 2014
germany.gif

Localisation: Wuppertal, Deutschland
Âge: 44 Scorpion

MessagePosté le: 02/12/2020 17:47    Sujet du message: Répondre en citant

Hello Vincent!!!
It is always a great inspiration to see you building something, nice solutions you
created!

Hope you are well, greetings from Wuppertal!

Christian
Revenir en haut de page
Voir le profil de l'utilisateur Envoyer un message privé  
bocorvin
Maniaco Posteur
Maniaco Posteur


Inscrit le: 17 Aoû 2015
netherlands.gif

Localisation: Hillegom
Âge: 74 Vierge

MessagePosté le: 03/12/2020 11:26    Sujet du message: Répondre en citant

Hello Christian,

Thanks for your nice comments Very Happy . All is well over here in Hillegom, strange times.
The King Kite is an interesting glider, not much info about it, so it take time to solve all those riddles Confused

LG

Vincent (DB)
Revenir en haut de page
Voir le profil de l'utilisateur Envoyer un message privé Envoyer un e-mail  
bocorvin
Maniaco Posteur
Maniaco Posteur


Inscrit le: 17 Aoû 2015
netherlands.gif

Localisation: Hillegom
Âge: 74 Vierge

MessagePosté le: 09/12/2020 11:50    Sujet du message: Répondre en citant

In the previous construction report I had already written something about the horizontal stabilizer. I had completely overlooked something in the plans

The front of the moving part is not only a semicircular plywood tube (which I was used to) but also a square box girder behind it. I think this is there to take up the bending and torsion of the balancing tips. In addition, the designers opted for a thin profile, which can be clearly seen in this photo (many thanks to Thomas)

. Because the horizontal stabilizer is also very tapered, the profile at the tips becomes very thin. I also wanted to keep the horizontal stabilizer very light, I presume that the 0.5mm plywood covering and web plates, glued with 2 X 2 mm spruce, should be strong enough.

I had to make sure that there was enough sheeting to keep the construction stable when removing it from my buildingboard, so I filled the space between the 2x2 beams of the rudder with balsa and glued all the web plates in. I glued diagonals in the nose, which together with the top sheeting should already form a kind of D box. The bottom sheeting can only be added when the stabilizer is off the building board.

Top sheeting, scarf joints





The TE, just like the vertical tail, is constructed from 2 layers of 0.5 plywood with balsa in between. Yet another problem caused by the balancing tips is the detachability of the rudder, it cannot be slided aside. I bent a hinge pins from 1mm steel wire, which I can later detach with the help of a screwdriver or a similar tool from the bottom








The nose D box sheeted on top also


In the background are the prebent strips for the sheeting of the elevator.

To be continued,

Vincent (DB)
Revenir en haut de page
Voir le profil de l'utilisateur Envoyer un message privé Envoyer un e-mail  
sebastian92
Psycho Posteur
Psycho Posteur


Inscrit le: 01 Sep 2015
france.gif

Localisation: Hauts de seine
Âge: 57 Scorpion

MessagePosté le: 09/12/2020 12:26    Sujet du message: Répondre en citant

Hello Vincent,
what a speed too Laughing
j'aime bien tes petites astuces techniques pour trouver les bonnes solutions ; continue like this !



Pourvu que ça vole, roule, flotte… normalement j'ai tout bien fait pour !
Un bel avion est un avion qui vole bien ! Marcel Dassault
…………
Sebastian

Vends module émission 2.4 ghz pour Futaba, Hitec TZ-FM + 2 récepteurs corona 8 voies (contact en MP)
Revenir en haut de page
Voir le profil de l'utilisateur Envoyer un message privé  
Clifton
Psycho Posteur
Psycho Posteur


Inscrit le: 07 Mai 2014
france.gif

Localisation: Anjou
Âge: 58 Capricorne

MessagePosté le: 09/12/2020 12:37    Sujet du message: Répondre en citant

As Sebastian said, very good job, I like your mechanical's ideas too !


Slingsby Petrel, à mon gout le plus beau de tous, quoi que le Fafnir ... Ah ces ailes en mouette, un jour ....

Rien de ce qui est fini n'est jamais achevé tant que tout ce qui est commencé n'est pas totalement terminé (Pierre Dac)
Revenir en haut de page
Voir le profil de l'utilisateur Envoyer un message privé  
caralp_laurent
Incurable Posteur
Incurable Posteur


Inscrit le: 30 Jan 2006
france.gif

Localisation: La Houssaye en Brie 77
Âge: 48 Gémeau

MessagePosté le: 09/12/2020 16:07    Sujet du message: Répondre en citant

Hi Vincent,
Good job !
The shape of this tail is unusual and beautiful !
All this glider is beautiful, especially the shape of the cockpit canopy on a picture above.

Friendly,

Lolo



Lolométéo, rétro addict ;o)

"On commence à vieillir quand on remplace ses rêves par des regrets"
Sénèque
Revenir en haut de page
Voir le profil de l'utilisateur Envoyer un message privé Envoyer un e-mail
bocorvin
Maniaco Posteur
Maniaco Posteur


Inscrit le: 17 Aoû 2015
netherlands.gif

Localisation: Hillegom
Âge: 74 Vierge

MessagePosté le: 09/12/2020 16:39    Sujet du message: Répondre en citant

Thanks for your nice comments!
Yes its a remarkable glider with a wonderfull canopy. Three prototypes were built simultaneously, all with the same error in, probably, the washout. They were very prone to spinning. Sad
In 1984 a new King Kite was build with a different profile and flew very good.

Vincent (DB)
Revenir en haut de page
Voir le profil de l'utilisateur Envoyer un message privé Envoyer un e-mail  
bocorvin
Maniaco Posteur
Maniaco Posteur


Inscrit le: 17 Aoû 2015
netherlands.gif

Localisation: Hillegom
Âge: 74 Vierge

MessagePosté le: 17/12/2020 16:05    Sujet du message: Répondre en citant

I went on with the elevator. First I cut the rudderhorn from 1mm epoxy sheet. I had to attach that to the extra box girder of the elevator.

To get a proper bond, I filled the inside of the web plates with spruce strips. I didn't want to glue the rudderhorn in its place yet and stored it . Next was the nose of the rudder combined with the extra box girder. On pre-bent (with boiling water) ply strips I drew the ribs on the inside to make the various gusset plates in one piece.

In reality it was different, but I wanted it to keep it as light as possible. I glued these pre-bent strips over the main spar of the rudder to form a torsionally rigid and round nose. At the location of the hinges I milled openings.

and now the rudder had to fit the fixed part of the horizontal stabilizer. After some fiddling it fitted.

However, once I had glued one capstrip in place , attaching and loosening the elevator with a screwdriver (to keep the spring hinge pins unlocked) turned out to be quite inconvenient. After a night's sleep I made a kind of angled screwdriver from 1mm iron strip, which I could temporarely fix with a piece of tape.





Then I could turn the iron strips back and I could (combined with maximum deflection of the elevator) take them out.


. Now the pivot pins sprung back in place and the rudder was secured. I was very happy with this, because I could also apply this technique to the ailerons. Besides I like to have the rudders removable, its easy with varnishing and covering

With some clamping the tips were sheeted with ply

Then I sanded all the triangular gusset plates neatly into shape and the stabilizer was more or less ready. It feels very stiff and weighs 118 grams, I can’t get it lighter....

To be continued,

Vincent (DB)
Revenir en haut de page
Voir le profil de l'utilisateur Envoyer un message privé Envoyer un e-mail  
de Schaetzen Harold
Maniaco Posteur
Maniaco Posteur


Inscrit le: 06 Avr 2006
belgium.gif

Localisation: Schilde
Âge: 75 Verseau

MessagePosté le: 18/12/2020 10:45    Sujet du message: Répondre en citant

Dear Vincent,

Congratulations for your the interesting construction method.
I believe you don't sleep very well, since tou started this new project. Every night you wake up and come with a new solution.

I am waiting for the new steps.

Best regards.
Harold
Revenir en haut de page
Voir le profil de l'utilisateur Envoyer un message privé Envoyer un e-mail
bocorvin
Maniaco Posteur
Maniaco Posteur


Inscrit le: 17 Aoû 2015
netherlands.gif

Localisation: Hillegom
Âge: 74 Vierge

MessagePosté le: 18/12/2020 12:15    Sujet du message: Répondre en citant

Dear Harold,

Thanks for your nice remarks. Luckily I sleep quite well, I found out that idea's just pop up at moments that you don't think about it Confused .
The problems I like to solve keep slowly nagging at me Laughing

Best regards,

Vincent (DB)
Revenir en haut de page
Voir le profil de l'utilisateur Envoyer un message privé Envoyer un e-mail  
bocorvin
Maniaco Posteur
Maniaco Posteur


Inscrit le: 17 Aoû 2015
netherlands.gif

Localisation: Hillegom
Âge: 74 Vierge

MessagePosté le: 23/12/2020 13:11    Sujet du message: Répondre en citant

I went on with the vertical tail.
The fin was already ready with one side sheeted, but unfortunately I saw that both on the drawing and on the photos that the vertical tail had a much rounder nose than the profile I had chosen, afterwards that was not the right choice. I had already sheeted one side, so I ripped that off. I glued filler pieces to the ribs

sanded them, along with those of the rudder, with a long sanding batten into a more rounded profile.
With the technique I was familiar with, I bent the plywood into shape



with boiling water. I and sheeted both the fixed part and the rudder itself



Finished it with capstrips on the ribs and sanded the gusset plates in shape



The vertical stabilizer was now roughly ready, and weighs 50 grams.
With the tailplanes in this stage I can slowly start on the fuselage.

Vincent (DB)
Revenir en haut de page
Voir le profil de l'utilisateur Envoyer un message privé Envoyer un e-mail  
Sed
Accro Posteur
Accro Posteur


Inscrit le: 13 Mai 2015
france.gif

Localisation: Villeurbanne
Âge: 54 Taureau

MessagePosté le: 23/12/2020 15:24    Sujet du message: Répondre en citant

Hello Vincent

Very nice job [clap] [clap] ! And light [good] !
Now waiting for the fuselage Wink !



Serge
Revenir en haut de page
Voir le profil de l'utilisateur Envoyer un message privé
bocorvin
Maniaco Posteur
Maniaco Posteur


Inscrit le: 17 Aoû 2015
netherlands.gif

Localisation: Hillegom
Âge: 74 Vierge

MessagePosté le: 31/12/2020 14:39    Sujet du message: Répondre en citant

Bonjour a tous,

After finishing the tail planes it was time to digitally draw the fuselage. I decided to having a go at it and bought Devfus, a program that is still affordable for a hobbyist.
After a lot of messing around with terms on the screen that I had never heard of, I got familiar with some things! Unfortunately, sometimes drawings were suddenly put (by magic??) in a different folder and I could no longer open them in the drawing program (Yes, laugh ...) Thats why I drew the hull about three times, practice makes perfect they say ... Gradually I found out what is possible, it is easier to make a hull straight in a drawing than to sand frames down or glue some extra material on. Here you see some of the drawings of the frames and


placement of the frames,

the 3d view of the fuselageI



thought it would be convenient to use a central batten to align the frames. My friend Adri was kind enough to CNC the frames and he did it excellent. Just like with the Gull, I made a construction setup of a panel of chipboard to which I screwed 10 x 10mm battens at frame distances. I deliberately made a “jump” in it because I wanted to sheet parts of the hull on the construction setup. The tail at the top and the nose at the bottom. In this way, it stays nice and straight and the stringers can be as thin as possible, to keep the weight of the tail down


Aligning the frames took a lot of time and I would like to hurry up, but I know sadly that errors in the frame setup are difficult to correct later . One of the two main bulkheads is prepared so the wingjoiner can be slid through it

Here is the 3X3mm spruce batten which slides through the centre of the frames,. I first wanted to screw them on the jig, but clamps actually do it better.

I first glued in both stringers left and right and then made the wide bottom (keel?) stringer, where the landing skate will be attached later.

So nice that the frames were “aligned” ( Ican’t find the correct word for that), I didn't have to sand them much! Designing took quite a bit of effort, but this was very satisfying

It's starting to look like a fuselage!



Vincent (DB)
Revenir en haut de page
Voir le profil de l'utilisateur Envoyer un message privé Envoyer un e-mail  
de Schaetzen Harold
Maniaco Posteur
Maniaco Posteur


Inscrit le: 06 Avr 2006
belgium.gif

Localisation: Schilde
Âge: 75 Verseau

MessagePosté le: 01/01/2021 12:49    Sujet du message: Répondre en citant

Dear Vincent,

Very nice to discover your construction this 1st of Jan. 2021! A lot of work was done during these last days.

Congratulations for all your research work to find a correct solutions for your hull construction.
I used the same construction lay-out for my Ka2B. Already a few yeas ago.
A very easy system.

I am only a little afraid for the "light construction". (Maybe a fault view, because your pictures are a small size?)
You will have some work for strengthen the fuselage?

Best regards and only good news for 2021.
Revenir en haut de page
Voir le profil de l'utilisateur Envoyer un message privé Envoyer un e-mail
Montrer les messages depuis:   
Poster un nouveau sujet   Répondre au sujet    RETROPLANE.net Index du Forum -> Constructions Détaillées en Photo Toutes les heures sont au format GMT + 2 Heures
Aller à la page Précédente
1, 2, 3, 4, 5, 6, 7, 8 Suivante
Page 2 sur 8

 
Sauter vers:  
Vous ne pouvez pas poster de nouveaux sujets dans ce forum
Vous ne pouvez pas répondre aux sujets dans ce forum
Vous ne pouvez pas éditer vos messages dans ce forum
Vous ne pouvez pas supprimer vos messages dans ce forum
Vous ne pouvez pas voter dans les sondages de ce forum
Vous ne pouvez pas joindre des fichiers
Vous pouvez télécharger des fichiers

Zone de Téléchargement du Forum et Site Retroplane


Images aléatoires album Retroplane, clic pour Agrandir

Forum en Flux RSS