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Member postings for dirk tinck

Here is a list of all the postings dirk tinck has made in our forums. Click on a thread name to jump to the thread.

Thread: fouga magister 1/4.5 moulded from scratch
19/10/2018 23:36:54

20181019_224636.jpgNot much progress today,

Cutted the aluminium ribs and prepared the foam blocks for the wings inner sections.

Drawn the line that represents the middle of the ribs,it has to be in the exact same position as on the rest of the wings.20181019_224231.jpg

19/10/2018 17:24:45

Hi,Chris,the plan is two removable wings,just the first rib will be part of the fuse.Aviation design made the inner section of the wing to be part of the fuse but that one has a wingspan of 3m10...I saw a copy fly on a EDF 128mm and 14s with a weight of 17kg(Jorg Rehm)and did just fine ! My PSS model weighs 8kg,so i'm trying to stay under 12kg auw(EDF)

18/10/2018 23:11:34

So !! back to foam cutting !

First dig-up the profili program and change the inner wing section some 10% thicker,make up some new aluminium ribs and foam blocks. This is only for the first 30 cm of the wing(retract area)This part will now be 73 mm instead of 62 mm thick.I hope that'e enough ! Back to test fit ! Cheers!20181018_221408.jpg

18/10/2018 23:02:36

Trouble in paradise !! The wing section is to thin to take the wheels ! In fact this is what i expected...

I could look for thinner wheels but the ones i ordered are very light and robust and have the right shape.

Only other option is to make the wing section bigger in the area of the wheels. In fact that will make the wing more scale as the real thing has this too (picture)20181017_235216.jpg

18/10/2018 22:54:06

Second to that i made the opening in a test-piece of wing20181017_225521.jpg

18/10/2018 22:51:53

Hi all,yesterday my retracts were delivered so let's fit.

first i positioned the retract opening according to the scale drawing20181017_214934.jpg

11/10/2018 23:42:19

I also ordered the landing gear from Electron retracts after a lot of studying scale drawings and mesuring.

I hope they will soon be here so i can test-fit them in a foam core .I have kept a few with cutting defaults.

So long builders !!

11/10/2018 23:32:04

The plan is to make gear door openings,servo hatches and air brake openings in the plugs before moulding.

foto for example20181009_195633.jpg

11/10/2018 23:24:56
  • 20181011_230623.jpg20181011_220525.jpg20181011_220408.jpgHi all,it's been a while sinds i posted due to a pss weekend in Calais,my wife being hospitalised,but i havent been resting. There's a lot to think about when making wing-plugs like servo positions,landing gear,flaps ,ailerons,etc.

Tonight i prepared the wing skins in 2mm balsa. I ordered 125x20 cm planks and glued together 4 pairs.

taped them together,turned them arround,opened the gap and zapped with green zap.Pressed down and sanded the seam right away.No worries for little gaps as the sanding dust fills them up , done20181011_210956.jpg

25/09/2018 22:42:39

As promised : Ttrailing edge set up20180925_224634.jpg

24/09/2018 23:26:27

The strips of foam glued to the trailing edge side of the foam halves are there to support the balsa .In this area it's just balsa to balsa to become a sharp trailing edge.There is no foam in between,that would be to thick.I 'll post a pic. of this tomorrow for clarity.

Cheers , Dirk

24/09/2018 23:14:32

20180922_193426.jpgBack in my plane cave i glued the wing core halves together as well as the rest halves of the foam board.All with UHU por. I will need them to press the wing cores in between when covering them with balsa.After a little sanding they are ready to sandwich them . 110 cm of fouga wing cores ! Well ,they 're not going to be used to fly , but to mould them. A long way to go !20180921_230404.jpg20180924_232032.jpg

23/09/2018 21:42:20
Let's get it in the air first Dries,There's a lot more things here than in a pss plane that can go wrong...
Thread: Chris's Vicomte 1916
21/09/2018 23:48:51

Hi Chris, very clean building job i must say !Some day i will build one like this , for some relaxed evening flights.

Thread: fouga magister 1/4.5 moulded from scratch
21/09/2018 23:22:58

Hi mark,missed you at the fly-in ?

Your absolutely right about the airfoil ! It is the closest to the real fouga and close to other jets i've owned.

I got my data from the PROFILI program,easy to use if your not a computer wizzard like me !

The tail section is NACA 009

Best regards Mark !!

21/09/2018 10:25:42
Hi Chris,the model must be the Aviation design-one ore a copy,i've seen them, not the best quality.Don't remember and Vrancken guy...cheers
21/09/2018 08:33:31
Thanks onetenor and Phil !This forum realy Gets me going !I enjoy building even more now!
20/09/2018 23:17:34

20180920_224520_001.jpg20180920_224506.jpg20180920_224442.jpgIn the end i had some nice results !20180918_224614.jpg

20/09/2018 23:14:37

In the outer part of the wings, i need 2deg. of washout ,calculated over the tip root gives me 7mm20180918_222632.jpg

20/09/2018 23:11:01

20180918_222632.jpg20180918_221709.jpgNext are the wings,these are too big to cut in one peace.I used UHU por to glue the aluminium ribs to the foam,because i don't like nails to hold them.

To be honest ,i ruined some foam on this job !! You have to find a compromise between wire tension , voltage , cutting speed ,and get the set-up right for the gravity foam cutter(difference in root lenght )20180917_230323.jpg

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