kkStB 306 4-4-0 tender steam loco in 6-wide 12V style

[idlemarvel]

The kkStB (kaiserlich-königlichen Staatsbahnen or Imperial and Royal Austrian State Railways) ran from 1873 to the end of the first world war, when the monarchy collapsed. The steam loco behind this model was built in 1910. The last in this class ran until 1959. The 4-4-0 class 306 pulled express trains and had a top speed of 100 km/h. Their usual livery was black with red lining but some were occasionally given a blue livery when pulling state trains or the Orient Express. The 3-axle tender is based on Tender series 156.  I did consider pivoting one of the axles to give a longer wheel base to the tender but it doesn't look too bad as is. 

https://de.wikipedia.org/wiki/KkStB_306

https://de.wikipedia.org/wiki/KkStB-Tenderreihe_156

Here is my LDD model. There is a standard train motor forming the front bogie. I thought this would be an interesting alternative to either a Technic motor in the loco (not sure there would be room?) or motorizing the tender. To give the front bogie some traction there are two 2x6x2 weight bricks supporting the boiler. The "drivers" (which idle) are also on a bogie. They could probably be fixed rather than pivoting but I think this reduces the friction. The driving wheels are connected by gears to keep the wheels in sync. I have built the chassis to check it runs okay and I'm just waiting to compile a few bricklink orders to build it IRL. The hub is in the tender. The top of the tender lifts off for access to the hub.

 

[Murdoch17]

Nice work @idlemarvel! Do you have anymore views of this MOC? i need to see more!

[idlemarvel]

On 4/3/2025 at 5:45 PM, Murdoch17 said:

Nice work @idlemarvel! Do you have anymore views of this MOC? i need to see more!

Here you go:

Note: these are just LDD screenshots not POV-Ray renders.

Here's the model in alternative livery.

 

[Murdoch17]

Thanks for the alternate views @idlemarvel! The MOC has a quaint retro charm to it, as if it were a MOC from around 15 years ago. Are you going to built it in the real world?

[idlemarvel]

8 hours ago, Murdoch17 said:

Thanks for the alternate views @idlemarvel! The MOC has a quaint retro charm to it, as if it were a MOC from around 15 years ago. Are you going to built it in the real world?

That is my intention. I have already built the powered chassis and tender to test it on my layout. I need more blue slopes and inverted slopes and black weight bricks. I'll update the post when I've built it.

[LEGO Train 12 Volts]

Very clean design and well designed mechanics.
I really like the yellow inserts on the side, they give a touch of perfection to the model!

[DAN42BR]

hey really cool,
you did a great job with the model in 6wide!
and especially the 2045!
in 6wide they have a special shame!
I am also building with LDD - would you send the files?
Greetings from Austria!
my models :https://www.flickr.com/photos/104806638@N03/with/49299461918

Edited April 6 by DAN42BR

[monai]

nice ans skilly design but, why try to model a loko with a more than 2m radius wheel in LEGO? It will be impossible to get the right aspect with the small Lego (and third part) wheels. Anyway very nice colors.

 

Sergio

[Shiva]

It is cute.

[idlemarvel]

So it now exists IRL. I got all the bricks to complete the model. I had to adjust the coupling between the tender and the loco as it was causing the rear wheels to derail (not enough play) and also the fireman platform on the tender had to be made narrowed so to to interfere with the rear yellow handrails on the loco when travelling around bends. Otherwise it runs very well. I also made the cylinders a bit bigger and added some superheater piping to the side of the boiler.

Here's the latest rendering:

Here's a picture of the model:

And a video of it running:

 

[Shiva]

Well done :)

[Murdoch17]

nice work! Glad to see it finished in real bricks!