Work in Progress of a Junkers F-13

1
April 10, 2024
OMG! How this little axle pin should be glued into that HUGE hole of the wheel?
All very flexible. The left V strut breaks easily. Strong doubts that it will hold the relative big model.
2
April 10, 2024
After some hours a metal replacement.
Upper right: The axle is 1mm nickel silver rod, the V-strut 0.7mm nickel silver rod. Squezzed brass pipes 2.0/1.2mm are the covers.
The legs are 0.8mm brass rod, again covered with squezzed brass 1.4mm pipes.
3
April 10, 2024
Plugged together. Since all connections are going into the lower wing kit part this can be built alone.
I like the look and the rigidness!
4
April 10, 2024
A picture from below shows the aerodynamic covers better.
5
April 10, 2024
As I modified the wheels heavily with a turned plastic part I drilled completely through for new 1.2mm brass bushes. The kit part showed a securing pin so my new bushes now also (0.15mm wire).
6
April 16, 2024
I had run out of veneer from my beloved "Buchsbaum". So I have sawn new ones.
7
April 16, 2024
After sanding the veneer thinner I glued a new wooden airscrew and shaped it.
8
April 16, 2024
The back side looks more interesting.
9
April 16, 2024
A bearing was turned from brass and thick piano wire. Little brass plates are soldered on.
The kit only provides a airscrew with a clamping cone. I do not know the other markings, but "my" don't have that cone!
10
April 16, 2024
After wood primer the airscrew is painted. That is the second try of painting it - my first one was to dark and too orange.
11
April 16, 2024
The bearing fits into the kit part.
12
April 16, 2024
Back.
13
April 16, 2024
I don't have the correct prop boss, but this one nearly matches.
14
April 23, 2024
A second type of F-13 airscrew. I turned a cone and a plate from aluminium and a bushing from brass on the lathe. The shaft is made of steel wire with a soldered-on plate.
15
April 23, 2024
The shaft is now secured with a plate on the back so the bearing is complete.
16
April 23, 2024
After more sanding towards the final shape that is now the back side.
17
April 23, 2024
On the front side the middle part is more free of the dark wood - a very special shape.
18
April 23, 2024
All plugged together.
19
April 23, 2024
The airscrew is now painted and got a metal protection on the leading edge.
20
April 23, 2024
A side view with cone and shaft.

Comments

44 10 April, 17:15

Marcel Klemmer
You're leaving your WW1 path...I'm in 👍

10 April, 17:27

bughunter
Welcome Marcel!
I'm not really leave the WWI path. I built the Junkers D.I already, a type from 1918. This F-13 was build one year later and I was fascinated by pictures of the internal structures - the principles are nearly identical.
After I noticed the kit with the nice box art (painted by Eugeny Knupfer - the guy behind Small Stuff) on the EME for a fair price I had to take it.
The box is somehow big, so I need to build it to save space 😉 Another reason to start it was a chat with Christoph, because he had trouble with the undercarrige in his build. So I spend today some hours for a new undercarriage.

10 April, 17:37

Jakub Fiala
Fabulous start! I´m in.

10 April, 17:57

Robert Podkoński
Watching with pleasure, of course!

10 April, 18:28

David Taylor
Back in"again".

10 April, 18:37

Ethan Flory
Looking great!

10 April, 18:57

gorby
Nice metalwork!
Looks like an interesting project.

10 April, 18:57

Sebastian Meyner
Following with great interest 👀

10 April, 19:05

bughunter
Thank you very much for your interest! A warm welcome to each one of you!
I was hoping for a quick project as there are not many parts, but it will take a while due to it's size.

11 April, 09:50

David Taylor
Hmm,limited run kits.Thats what modelling is about.

11 April, 14:43

bughunter
The fit is different, from perfect to ugly deformed parts. At least the provided masks cut form ORAMASK fits on the cabin windows inside and outside.

11 April, 20:06

Martin Oostrom
You're missing a few wings!

11 April, 21:09

Pepe
Great!!!!

11 April, 21:13

Christoph Kunz
Sorry, I'm late.
Excellent landing gear, as I expected. 👍

15 April, 13:37

Alec K
Me too, getting in in the back row…

15 April, 16:00

Michael Kohl
Like it.

15 April, 18:08

Thomas Bischoff
nice start - count me in 👍

15 April, 19:07

bughunter
A warm welcome mates!
@Martin I will put it aside to the other Junkers Junkers D.I - Short fuselage | Project by bughunter (1:48) so together they have two wings 😉
@Christoph No need to apologise! Your build invited me to look into this type and finally to buy the kit!

16 April, 15:23

bughunter
I want to have a rotating prop as on my other models, so I made a new wooden prop with a little bearing.
Over the time the F-13 used different airscrews and mountings. Wood or later also metal was used.
The kit provides only a airscrew with a clamping aluminium cone but a check of original photos of my marking do not show one (I have not checked the other possible markings). It looks exactly like the one in the Budapest Aviation Museum: [img1]
So I tried to replicate that one.
The airscrew of the F-13 in the "Deutsches Museum" München with a aluminium cone looks beautiful too, but has a different shape and metal leading edge.

16 April, 16:25

Greg Baker
Man... that propellor looks like butter... so smooth and creamy... 🙂

16 April, 16:36

Michael Kohl
Fine work on the airscrew

16 April, 16:49

Ben M
watching

16 April, 17:56

JW
Love the laminated contrasting wood on those old props. It looks great.

18 April, 01:59

Giannis Kaltapanidis
Masterclass loading! Definetly in...

18 April, 06:49

Jose Freire
Another masterpiece coming from your workbench. Taking a seat...

18 April, 08:07

bughunter
Thank very much for your nice comments - highly appreciated!
Now the build is hold for some days, due to the famous Mosonshow. My first visit there. CU!

18 April, 10:11

bughunter
The trend is towards a second air screw so I made another airscrew of a different type. New pictures from 14.
I used the F-13 of the Deutsches Museum as a template, see the great pictures here: igor113.livejournal.com/180302.html
Yesterday I made the airscrew, today the metal parts, final shaping and painting.
This special shape was a bit demading, but I wanted to see if I'm able to replicate it.

@Christoph(Postbote), you will need a 2.4mm drill to open the kit mount for the bearing, and a 3mm for a little recess on the front, And CA of course.
And I need your address. Please send me a Private Message.

I hope you will like this airscrew!

23 April, 20:11