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Scratchbuilding a 1/9 scale Citroen Kegresse P19 from the croisiere jaune

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  • Member since
    November 2021
Scratchbuilding a 1/9 scale Citroen Kegresse P19 from the croisiere jaune
Posted by Steven vdB on Thursday, November 25, 2021 2:11 AM

   

 

Hi everybody,

I would like to present my 1/9 scale scratchbuild Citroën Kegresse P19 from the Croisière Jaune.

The P19 was used in a Citroën sponsored expedition across the Himalaya's. The model chosen was the "Cinema Lourd" truck that had all the film equipment.

The model is based on photo's. The data was then transfered to a CAD program and the majority of the parts have been 3D printed.

The tires are moulded in silicon rubber, inside a 3D printed mould.

The model is also outfitted with a RC so it can drive. Due to this, some parts are not to scale because functionality was preferred. 

If there is some interest on how this was build, I will post details later.

Hope you enjoy it. 

  

 

  • Member since
    June 2021
Posted by rocketman2000 on Sunday, November 28, 2021 8:37 AM

Steven, your links are not working for me.

I find embedded pictures more reliable, as well as easier to access.  There are a number of threads on how to embed photos down in the Forum Technical Assistance forum.  It is in the Feedback, Help and Testing section of forums.

 

Don Stauffer in Minnesota

  • Member since
    May 2009
  • From: Poland
Posted by Pawel on Sunday, November 28, 2021 1:04 PM

Hello Steven!

I'm also having problems with the links. You can edit your post to fix them. If you like I can help you with posting pictures here.

The title of your thread got me interested, because some years ago I have built a model of a very similar vehicle - a polish wz. 28 armored car which was built on a citroen chassis:

1:25 Polish wz.28 by Pawel

1:25 Polish wz.28 by Pawel

Good luck with those pictures - I would love to see them - and have a nice day

Paweł

All comments and critique welcomed. Thanks for your honest opinions!

www.vietnam.net.pl

  • Member since
    November 2021
Posted by Steven vdB on Monday, November 29, 2021 1:19 AM

Hello Pawel,

I am struggling with the pictures. After seeing nothing was diplayed I checked the Help section and tried again. I am on Flickr and added a photo in the Test section using the URL code. I am still waiting for the result to appear.

How can I edit my original post? I would love to rectify it once I find out how to get the photo's inserted. Someone mentionned "embed" photo's. How is that done? 

Thx for the help.

 

  • Member since
    November 2021
Posted by Steven vdB on Monday, November 29, 2021 1:28 AM

Thank you for the suggestion. I did a test post of a picture I sent with the URL from Flickr. Still waiting for it to appear to check if it shows.....

  • Member since
    June 2021
Posted by rocketman2000 on Monday, November 29, 2021 7:26 AM

How did you do the tracks?

 

Don Stauffer in Minnesota

  • Member since
    November 2021
Posted by Steven vdB on Monday, November 29, 2021 9:23 AM

Hi ,

I 3D-printed every single track plate and inserted steel pins. A lot of work. In the original model the track was made of a rubber endless belt with steel plates screwed on. Due to the constraints I had to make it a working model, I went for separate track links instead. I did not find an easy way of replicating the original layout and make it work.

  • Member since
    November 2021
Posted by Steven vdB on Monday, November 29, 2021 9:35 AM

Hi All,

 

I updated the original post , the photos should be accessable now. 

 

I hope it works. I would love to embed them but I don't see how this is done. All help appreciated. 

  • Member since
    May 2009
  • From: Poland
Posted by Pawel on Monday, November 29, 2021 1:17 PM

Hello!

Let's see if I can do it:

Citroen by Steven

OK, it's harder than necessary, but it can be done!

Thanks for sharing and have a nice day.

I see your Citroen is later than mine - from after when they shortened the drive shaft and put the live axle in front instead on the back, as in the earlier machines - like for example the one that drove around Africa.

Have a nie day!

Paweł

All comments and critique welcomed. Thanks for your honest opinions!

www.vietnam.net.pl

  • Member since
    November 2021
Posted by Steven vdB on Monday, November 29, 2021 1:53 PM

Hi Pavel, 

how on earth did you do this? 

  • Member since
    May 2009
  • From: Poland
Posted by Pawel on Monday, November 29, 2021 4:01 PM

Hello Steven!

What I did exactly was I clicked to look at one individual picture then I clicked on "share" (that funny arrow pointing to the right, between "the star" and "the arrow pointing down") and then I took the option "BBCode" (third option). I got this (EDIT: here I pasted the code I copied but it posts as picture - much quicker as in my original example):

 IMG_6723 by steven_vandenberghe_ecomobile, on Flickr

Copied it (ctrl-c), then I went on this forum and when posting I used the icon labeled "Insert/Edit Image". I pasted the above into "Source" but I have edited the above down to:

https://live.staticflickr.com/65535/51710629254_fea2a6a13d_k.jpg

and then I just clicked OK, finished editing the reply and just submitted the reply. Deceptively easy, isn't it?

Have a nice day

Paweł

All comments and critique welcomed. Thanks for your honest opinions!

www.vietnam.net.pl

  • Member since
    November 2021
Posted by Steven vdB on Tuesday, November 30, 2021 4:40 AM

Hi Pavel,

 

Hooray it works. Thanks so much for your help. 

 

  • Member since
    May 2009
  • From: Poland
Posted by Pawel on Tuesday, November 30, 2021 8:08 AM

My pleasure!

All comments and critique welcomed. Thanks for your honest opinions!

www.vietnam.net.pl

  • Member since
    July 2009
  • From: North Carolina
Posted by Back to the bench on Wednesday, December 1, 2021 10:51 AM

Hi Steven, this is a really interesting subject that I was not aware of. Congratulations on an amazing completed build. I am curious about what your workflow was to get from photos to a usable 3D model. Again well done and thanks for sharing your work on this very interesting piece of history.

Gil

fox
  • Member since
    January 2007
  • From: Narvon, Pa.
Posted by fox on Wednesday, December 1, 2021 6:56 PM

Very nice work Steven!

Jim Captain

Stay Safe.

 Main WIP: 

   On the Bench:  1/48 Tamiya - Vought F4U-1A Corsair for Group Build 'Absent Friends' 50%                                                                   1/48 Encore Models - A-37B/OA-37B Dragonfly 50%

I keep hitting "escape", but I'm still here.

  • Member since
    November 2021
Posted by Steven vdB on Thursday, December 2, 2021 2:31 AM

Thank you for your kind words Jim.

  • Member since
    November 2021
Posted by Steven vdB on Thursday, December 2, 2021 2:31 AM

Hi Gil,

Interbellum expeditions have always been appealing to me. It even took me so far as organising some expeditions myself for 15 years mostly in North African deserts. I covered Marocco, Algeria, Tunisia and Libia.

In my research for these expeditions I frequently encountered reference to several Citroen raids. They were conducted with special half tracked vehicles designed by Mr. Kegresse.

From the early expeditions in "black" Africa they turned to an Asian adventure for the last expedition. This expedition split up and were planned to join again on the Asian side of the Himalayas. The group destined to cross the himalayas was called group PAMIR and consisted of lighter vehicles that could be taken apart when the roads became uncrossable. In the end only 2 from the total of 7 half tracks were taken across, the rest returned to France. Even the last 2 half tracks did not make the rendez-vous with the Asian group and had to be abandonned somewhere in Gilghit and the crew proceded to join the Asian group on horse back.

So far for a little historie.

I found a lot of photo's in several books I bought of the subject and a lot of reference on a website of a Danish association of Kegresse enthousiasts. Here I also found technical and spare parts manuals with a lot of drawings and pictures.

Also lists with all the different models and their specification. This helped me out to determine the scale of the original photos.

I started with a photo from the normal Kegresse P19 used in the Pamir group.

I can import this image into my CAD software and scale it to make sure it is in real size. I always start in real size and scale down to the model scale I want, once the model is finished. I took the idler wheel and sprocked diameter as a reference to scale the picture.

Then I started drawing the overal dimensions like centre to centre distance for the wheels, position of the main parts like the hood, wind shield, radiator and so on.

I decided to tackle the track drive system first because this seemed the most challenging and would be the decisive factor to go on and finish the build. Because this will be a working RC vehicle , everything had to work.

This gave the following result.

I was lucky to also find cross cuts in the technical manual to determine the thickness and build up of all the elements.

From there I 3D printed all the pieces, fitted them together and tested the assembly. It worked out fine.

In a next post I will take you further into the designing of the drive system with track and working differential.

If you have further specific questions, feel free to ask.

Bye for now.

 

Steven

  • Member since
    May 2009
  • From: Poland
Posted by Pawel on Thursday, December 2, 2021 6:08 AM

Hello Steven!

What 3D software do you use? And can you tell us what country you are from?

Thanks for sharing and have a nice day

Paweł

All comments and critique welcomed. Thanks for your honest opinions!

www.vietnam.net.pl

  • Member since
    November 2021
Posted by Steven vdB on Thursday, December 2, 2021 9:00 AM

Hi Pawel,

I use SolidWorks 2021.

I am based in Belgium.

Cheers,

 

Steven

  • Member since
    July 2009
  • From: North Carolina
Posted by Back to the bench on Thursday, December 2, 2021 9:41 AM

Hi Stephen,

thanks a lot for the additional historical information, very interesting indeed. It sounds like you have had some amazing adventures of your ownYes

Also thanks for the details on your work flow process to arrive at the completed model. I really admire your patience and CAD skills as well as your scale model building skills.

Have you had a chance to set out on any back yard expeditions with your RC Citroen?

Gil

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