Custom train set

[Dutchiedoughnut]

Hi everyone,

Do you know those Russian dolls? The ones that you open up and there's a smaller doll inside? And so on, and so on...
That's been the inspiration for this particular trainset. I will get back to that in later posts.

I am going to start off with a 6-wide Class 47. A while back, I've posted something about a wider and longer 47. I've scaled it down for this set so it would run better on standard Lego tracks.
In fact, it is just about the same size as Lego's own train sets.
(Note: Where can I share the LXF file?)

 

I've tried to make the model stand out a bit from the standard Lego locomotive setup (which typically uses a train motor as one bogie). Here it is, undressed:

 

I did build the mechanics in part, and they come together quite nicely. I've modified the LDD file to fix the errors that did exist in the model.

The engine is in Dutch livery. A quick look at my username explains why

It's also meant to be build in modules:

I will make you wait for the other bits of the trainset

 

[Unfinished_Projects]

Very nice! I like the modular design and use of medium motors

Unfinished_Projects

[CSW652]

Very nice engine.  You should enter it on Lego Ideas.

[Mr Hobbles]

Very very cool! Super detailed for a 6-wide, I love it.

Do you have some more pictures of the bogey and motor design?

[LEGO Train 12 Volts]

Very well done! Nice upgrade for your model 

[JopieK]

@Dutchiedoughnut "Note: Where can I share the LXF file?" You could add it to a sharing platform (e.g. Brickshelf) and link to it.

[CSW652]

It's really to bad that Eurobricks doesn't have a tab for file shares.

[Dutchiedoughnut]

I will have a look into creating the Brickshelf account.

Meanwhile; bogies! No modern train should be without them...

There isn't too much exciting about the 47's bogies; on the outside they use the standard Lego pieces to detail the outside.
On the inside however, things are a bit different. All wheels on the 47 are powered, and the bogies should allow for a crazy amount of turning. This allows for tighter turns or longer locomotives.

Above is the outside of the bogies. It's a bit plane Jane with Lego's standard magnet coupling and bogie sides. Only the drive shaft sticks out to reveal something unusual is going on. I've also added a bit of detail to represent the springs that hold up the locomotive in real life. There are also a few black plates added to help spread the weight; probably not entirely required.

On the inside, things get a bit more interesting. Rather than the same old train engine, the drive shaft connects to a set of gears to drive both wheels. The bogies are constructed so that the gears have the minimum amount of play. I am not too sure about how much torque the bogies will handle (i.e. how many cars the locomotive can pull). I guess that is trial and error.

Edit: Oops, forgot to mention the motor mount.

Here is the bogie attached to the motor:

And finally, the motor mount itself.
The M motor is supported by 8 points on its bottom and 3 points on the front. This should be enough to hold the motor.

 

 

Edited January 23, 2019 by Dutchiedoughnut

[Roadmonkeytj]

Admittedly for a Diesel...  I like it lol! 

[supertruper1988]

That looks great! unfortunately the plates under the technic bricks will not work they will catch on switches and prevent the engine from taking curves. 

[Toastie]

6 hours ago, CSW652 said:

It's really to bad that Eurobricks doesn't have a tab for file shares.

Yes and yes. It is an agony.

Best
Thorsten

[Dutchiedoughnut]

12 hours ago, supertruper1988 said:

That looks great! unfortunately the plates under the technic bricks will not work they will catch on switches and prevent the engine from taking curves. 

Oops! Of course, you're absolutely right!

I have reworked the bogies to allow them to pass over switches and curves. In turn, I've had to raise the M motors by one plate, and then adjust the roof as well!

First, the bogies needed to be changed so they don't catch on points and curves. I felt the old structure wouldn't be strong enough as the lower plate is now missing.
The old 1x8 Technic beams were replaced by 4x4 Technic frames.

The two short 2-long axles were replaced by a single, longer axle. This forced the drive shaft to the motor to be shorter, and I've changed it to an axle with end stop. The end stop will help keep the bogie attached to the locomotive when I pick it up. The M motor is a weak link, but I think it will be easy enough to re-attach the bogies to the M motor if needed. Re-attaching the gear would be much harder.

In turn the M-motor mount has been pushed up:

And then, the motor was interfering with the roof so that had to change.

It worked out in the end though :).

 

[MrMeme260]

you could post the files on bricksafe

[kyzr44]

Love the 2 medium motor idea.  Working on a new moc.  Thank you.

[zephyr1934]

Hi MrMeme260,

 welcome to Train Tech. This thread has been inactive for 1.5 years. Please do not revive an old thread for a simple question. It's an easy thing to miss, but once you get use to the flow of the forum you'll see how old threads popping up like this gums up the works.

 

[rday1982]

I'm not normally a heritage diesel guy, but I love the engineering that's gone into this build, and how you replicated the look of the 47 without sacrificing that engineering. It's a great looking locomotive, and should be a fantastic heavy haul train for lots of cars.

On 1/22/2019 at 2:30 PM, Dutchiedoughnut said:

(Note: Where can I share the LXF file?) 

Bricksafe? Or import to studio and share in the gallery.