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E21 James posted:

......To draw a locomotive (any locomotive) on a computer is a HUGE undertaking...

Working on it!

sd40-2-3dm-001sd40-2-3dm-002sd40-2-3dm-003sd40-2-3dm-004sd40-2-3dm-005sd40-2-3dm-006sd40-2-3dm-007sd40-2-3dm-008

JP's project inspired me to get moving on my own version.  My plan is to build the frame from etched metal and machined parts, with the superstructure being assembled from a combination of 3d printed, resin cast, and Atlas parts.  This project is on hold at the moment since it was a distraction from the project I should be working on.  I really should finish one thing before I start another, but it's hard to do sometimes.

Looking great so far JPV!
Jim

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Images (9)
  • sd40-2-3dm-001
  • sd40-2-3dm-002
  • sd40-2-3dm-003
  • sd40-2-3dm-004
  • sd40-2-3dm-005
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Last edited by big train

Well, James, thank you for your comment; it's very kind! I've never seen an Overland model but the comparison makes me ; I don't think I can reach their level; it's too high for me! Your're right when you say that the drawing is a huge undertaking and these of Jim are also the proof.

Jim, hello, happy to see your drawings; it will be a fantastic model! thanks for your comment. As you told me one day, I will certainly use some Atlas parts; I have seen on their website that they were not expensive but they don't inevitably have all the necessary; but it's better than nothing!

See you soon

jpv in France

While I'm waiting 3D parts to be delivered, I began to make the pipes which run everywhere along the sides of the chassis.

I wondered how to do but I have found a solution to this problem: very thin electric wire (0,5 mm diameter) supported by  pieces in U shape (EVERGREEN channel 2,5 x 1 mm) cut in 1 mm width.

I first made a template in a 2D drawing to have the exact space between U pieces; I re-do it to know how many wires I have to lay down!

04_2_2018

04_2_2018b

 

I will have to draw other templates for other areas of the chassis.

It's time consuming but I think it will be fine.

Now all is drying until tomorrow!

It's extremely inadvisable to do this work with mittens...........

jpv in France

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Images (2)
  • 04_2_2018
  • 04_2_2018b

I received these parts:

15_2_2018

The snow plow will be installed when I will get the detail parts for the front face (air hoses, brackets for lift bar, etc..)

Today I fixed the coupler pockets:

18_2_2018a

18_2_2018b

The last two parts are the air tanks; I have to improve them with pipes before gluing on the chassis. It's the work for this afternoon!

jpv in France

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Images (3)
  • 15_2_2018
  • 18_2_2018a
  • 18_2_2018b

I have written something wrong: the air tanks are not glued on the chassis but on the fuel tank! if I had done this, some screw holes would have been blocked!

So, now they are glued on the chassis with some pipes added:

19_2_2018a

19_2_2018b

On the 2 photos above, you can see the 2 screw holes at each end for the assembly under the chassis.

19_2_2018c

19_2_2018d

It lacks yet some other details:  parts in order from PSC (fuel filler, gauge, etc...).

jpv in France

 

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Images (4)
  • 19_2_2018a
  • 19_2_2018b
  • 19_2_2018c
  • 19_2_2018d

I told you some days ago about a new project after the SD 40 I'm working on, making the design at this day.

Here it is:

10_01_1258 ensemble caisse

An AEM 7; not yet finished, of course! it will be made like the sd 40, in 3D printing.

Another shot: close up of the cab interior:

10_01_1258 ensemble caisse_close up

Last shot, a photomontage:

20_03_1244 assemblage portique_AEM 7

The tracks come directly from the 3D Warehouse of SKETCHUP, on the other hand, the catenary gantry is a model I'm building.

But now, back to the SD 40!

jpv in France

 

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Images (3)
  • 10_01_1258 ensemble caisse
  • 20_03_1244 assemblage portique_AEM 7
  • 10_01_1258 ensemble caisse_close up

Some little progress on the SD40-2.

Now detailing the front and back faces of the chassis:

08_3_2018a

08_3_2018b

Parts are from PSC; the cut bar is home made with some bad welding in the middle of the part......................; will try to get them better in sanding with my mini drill........Sure I'm not a weld expert........next, the back face.

Just lacks a hose near the coupler pocket but I have to modify it because of the snow plow......

jpv in France

 

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Images (2)
  • 08_3_2018a
  • 08_3_2018b

It's been a long time, but many other things to do in my apartment turned me away of the 1/48 scale!!!

Among those things, I built this kit with a friend of mine (no connection at all with the railway modelling but very useful !!!):

SAM_1744

Back to the 1/48!

I received two days ago the front short hood: 

SAM_1747

I made an attempt, inserting a brass access door latch to see if it fitted: good result.

Unfortunately, a significant default appeared on one side:

SAM_1748

Impossible to correct without breaking the part!

To make the printing easier, I reinforced on the 3D drawing the box by thickening the inner side; I made the same thing on the shell after the cab, everywhere I found these latches holes and there are many others too!

So I asked my "3D guy" to re-do this piece and I have to wait again............sorry!

jpv in France

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Images (3)
  • SAM_1747
  • SAM_1748
  • SAM_1744

Hi all,

It's been a long time but events have moved me away from 1/48 scale for a while...........

Now, it's behind me and I can come back to my hobby!

Well, the first attempt of the front hood was not a success! I asked my 3D guy to re-do that part; the second one is not a success too!!!!! some defects are still here and it's not possible to work correctly with such a piece!

SAM_1758

SAM_1762

So now, I'm waiting for the third time to have a new one, hoping better!!!!!

Meanwhile, I worked on the doors that I have had to separate from the 3D shell for more simplicity in the 3D printing process; so these doors are made of 0,25 mm thick styrene and will be glued on the shell; the hinges are made of styrene strip (0,25 mm thick, 1 mm width and 2 mm long) and a rod of 0,5 mm diameter that I will add after.

8_5_2018 a

8_5_2018 b 

8_5_2018 d

 

Good news all the same: my Dash 8 40CW (ATLAS) is scheduled to arrive at the end of this month (I ordered it in GERMANY - AM SPUR NULL HOBBY SHOP).

See you soon

JPV in France

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Images (5)
  • SAM_1758
  • SAM_1762
  • 8_5_2018 a
  • 8_5_2018 b
  • 8_5_2018 d

Even if the front hood has yet some defaults (third 3D printing attempt!), I put the different parts on the chassis and to judge the unity; front hood and front cab made with resine, part in light grey (primer) made with ABS, chassis and fuel tank ABS too.

14_5_2018

I also changed my mind about the paint scheme; I will certainly paint this engine in a lease color, much rare and never done in O scale (I think) than classic companies (UP, CSX, etc...) and easier to do too........

I really like this one:

sd40-2 lease light gray

And a light weathering will suit to this engine!

jpv in France

 

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Images (2)
  • 14_5_2018
  • sd40-2 lease light gray

Hello all,

Long and necessary break for some different reasons..............and one in particular: my main computer broke down! I have another one in the living room where I could put some directories before the screen of the other become all black!!! I have to wait the next week to have a repairer at home!

I worked again on this engine, but I have modified my point of view a little bit: in fact, all in 3D is quite impossible for one main reason: as soon as a part reaches a certain dimension, the price to print it becomes exponential: for exemple, the long hood behind the cab. So I decided to take again my cutter and my rule to make it at a more affordable cost.

30_6_2018a

The doors are now glued on the frame and all the hinges are made (tedious work with very little parts - strips and rods - to fit together!); I have to re order door latches.

But I kept the roof in 3D resine printing; too hard to drill 20 mm diameter holes for the fan housings in a 2 mm sheet of styrene!

The resine breaks like glass and it happened to me on this part! hopefully, the break is hidden and reinforced by the exhaust stack glued on!!!

30_6_2018b

I just added rivets and lift rings on and the exhaust stack (also in 3D/resine); I find it's not too bad like that.

The 2 following parts have been re done in styrene too: their appearance in 3D was not like I wanted; I just keeped for the first one the fan grille in resine.

30_6_2018c

I also changed the lift ring for a little bigger ones.

30_6_2018d

On the other hand, this one is fully re done in styrene, always for a better appearance.

With these modifications, I will have a better model.

Next week,  I will give some other little parts to make in 3D to complete this long hood and after that, I began to do the cab.

jpv in France

Attachments

Images (4)
  • 30_6_2018a
  • 30_6_2018b
  • 30_6_2018c
  • 30_6_2018d

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