Jump to content

Welcome to Large Scale Modeller: The home of the large scale military model builder. 

Umlaufmotor

Drain valve and shut-off valve

Recommended Posts

It was necessary in the early years of aviation, that oil and cooling water had to be changed frequently.
The cooling water is drained every night from the cooling system and filled again on the next day.
During the cold winter period, the cooling water was often drained between the flights to avoid freezing of the cooling system.

For this reason we see on original photos very often drain cocks or oil shut-off valves.

Here, for example, an oil shut-off valve at the Mercedes D.III/D.IIIa engine.

Hahnhinten1_zps4e1d54a7.jpg

 

Here, a drain cock on the wing radiator from the Pfalz D.IIIa is visible (left blue arrow).

Pfalz1aa_zps8b4cda29.jpg

 

Also on the wing radiator of the Albatros DV / D.Va.

 

Ku5_zps75e3d3ab.jpg

 

These little things are most very nice details.

They are also 32 times smaller very nice details on a model.

Here at the WNW Mercedes D.III / D.IIIa engine ............

 

Hahnhinten6a_zps140827a8.jpg

Hahnhinten6c_zpsac14b756.jpg

Hahnhinten6b_zpsa3f8548b.jpg

 

........................and here on the WNW Pfalz D.IIIa

 

Pfalz1_zpsfc56f06b.jpg

Pfalz2_zps57296eb3.jpg

 

But how can be represented this thing in 1/32 scale?
 

The answer is:
With a bit of brass tube, some copper wire, some plastic rod, a steady hand and lots of patience. :ph34r: 

We grab the cooler the albatross as a test object.

First, a 0.5 mm hole is drilled in the correct place on the radiator.

 

Ku6_zps043de4a5.jpg

 

A small Resin screw is glued in this hole .

 

Ku7_zps48f93736.jpg

Ku8_zps3c810460.jpg

 

In this screw we drill a hole with a 0.3 mm drill.

 

Ku9_zps833fc5e0.jpg

 

We glued a brass tube with 0.3 mm outer diameter in this hole.

 

Ku10_zps44e2f83b.jpg

 

Now, we need a plastic rod with 0.5 mm diameter.
We drilled a 0.3 mm hole in this rod (yellow arrow) and from the side a 0.2 mm hole (orange arrow).

 

Ku11_zps41073ab0.jpg

 

Now, we cut the plastic rod to a length of about 1.5 mm and placed it onto the brass tube.

 

Ku12_zpse80678f4.jpg

 

We manufacture the handle of the drain cock from 0.2 mm copper wire .
Bend in the 90 ° angle and squeeze it with flat pliers.

 

Ku13_zpsa6885453.jpg

 

Cut the copper wire in the correct length (max. approx 1mm!) and glue.
The lever down means the drain cock is closed.

The lever positioned transversely means the drain cock is open.

 

Ku14_zpsff64e0ed.jpg

 

The drain valve is painted with Mr. Metal Color "Brass", the handle remains in its original color (copper).

 

Ku18_zps127ee7ec.jpg

Ku19_zps16255032.jpg

 

.............that's all ;) 

 

Servus

Bertl

  • Like 1

Share this post


Link to post
Share on other sites

Oh man.... What a great instruction! 

And here I am.. happy when I get all the parts indicated in the instructions are added!

 

Thanx again for sharing your ART with us!

  • Like 1

Share this post


Link to post
Share on other sites

The amazing tutorials keep coming, loving it!  Thanks again for sharing your master class building tips with us.

  • Like 1

Share this post


Link to post
Share on other sites

Sweet!  I was looking at my model this morning wondering how I could make this look more realistic and this makes it, well not easy, but at least a direction that I can practice!

 

Thank you Sir!

Share this post


Link to post
Share on other sites

Fantastic!

 

Do you have any hints on how you drill through the side of the plastic rod while keeping the hole centered? I seem to have a tough time doing this without the drill leaning off to one side and ruining the plastic rod.

Share this post


Link to post
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.


  • Recently Browsing   0 members

    No registered users viewing this page.

×
×
  • Create New...