Stack Exchange Network

Stack Exchange network consists of 174 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.

Visit Stack Exchange
Join us in building a kind, collaborative learning community via our updated Code of Conduct.

A popular choice among AFOLs for building their own creations, Trains are now a sub-theme of LEGO City.

6
votes
2answers
2k views

Are only two new train sets available in August 2018?

I want to get started on LEGO trains. However when I look up which trains sets are available I find only two: 60198 Cargo Train 60197 Passenger Train Does that mean I can only buy two different ...
5
votes
1answer
54 views

Is there an API for the Duplo 10874 train set?

I intend to buy this train set for my daughter. Apparently, the locomotive can communicate with an app via a bluetooth connection. My question is: is there any documentation available so that I can ...
5
votes
1answer
74 views

What is the function of Duplo part# 38507 RAIL ACCESSORY, NO. 4

Can someone explain to me what 38507: RAIL ACCESSORY, NO. 4 (#6225519) is for? I've got this in the new Duplo Train accessory #10882 and can't figure out what it does :S
3
votes
1answer
70 views

What is this piece? I see it being sold with 9v train tracks

What is this piece? I see it being sold with 9v train tracks
2
votes
1answer
45 views

How many and what kind of batteries are needed for LEGO Powered Up?

I'm considering picking up one of the Powered Up train sets. What kind of batteries does the included Powered Up remote control system use?
1
vote
1answer
33 views

Does my child need a smart device to control LEGO Powered Up train sets?

The first two Powered Up train sets can be controlled with smart devices (phone, tablet, etc). Is this required to control the trains?
0
votes
2answers
67 views

Third power functions train runs backwards, why?

We have the passenger train and freight train, both run from a single controller one through the red and one through the blue side. At Christmas we got the holiday train and with the power functions ...
3
votes
0answers
61 views

Duplo rail accessory compatibility with older trains

Are the new Duplo rail accessories, like #6225521 and #6225519 (appearing in, for example Duplo #10872: Train Bridge and Tracks; #10874: Steam Train; and #10875: Cargo Train) compatible with older ...
2
votes
1answer
113 views

EV3 Unregulated Motor - different plus/minus power behavior

I'm helping some fellow Bay Area LEGO User Group builders who want to use an EV3 to power a 9V train. I'm using the NXT to 9V conversion cable (https://www.bricklink.com/v2/catalog/catalogitem.page?P=...
2
votes
2answers
108 views

Can I convert my train 9V 4563 to the power function motor?

The motor of my locomotive is dead. I have two choices : repurchase it or buy a power function. It is possible of customize my train 4563 to use the power function motor ? If yes, what set to buy ? (...
3
votes
1answer
137 views

How should I get started with LEGO trains?

I'd like to get started with LEGO Train. I understand the PF system is The Way, and the tracks are generally mutually compatible, but the exact interplay of trains & power components eludes me. ...
7
votes
1answer
135 views

How to lubricate the 4.5v train motor for set 7722?

How I can lubricate the 4.5v train motor on my #7722 train set? It squeals.
12
votes
1answer
133 views

What is the length of a DUPLO train bridge?

I'm trying to plan a DUPLO train track layout to order but I currently don't own any pieces. I'd like to include a bridge like the one in set 3774, but I'm unsure if it will fit my layouts. Can ...
9
votes
2answers
210 views

How can I repair a red 12v train motor from Set# 7730?

I have a LEGO 7865 Red 12 volt train motor from a LEGO 7730 train set. The motor has stopped working as it has been dropped on one of the wheels. How can I open the motor case to effect a repair?
7
votes
1answer
270 views

Why are there 4 wires leading to the Power Functions LEGO train motor?

Does anyone know what the wires do? If the Power Functions train motors are simple DC only 2 wires would be needed or is it more complex than that?
4
votes
1answer
127 views

LEGO Train - what size cork track bed

What size model train cork track bed should I buy to fit under a standard LEGO train track?
5
votes
1answer
72 views

9v Regulator Question

I have 2 questions: For a big 9v train layout, do you need more than one regulator to power the whole track without a shortage of power? If a 9v layout was to have more than one regulator wouldn't ...
3
votes
1answer
137 views

What kind of track is the Emerald Night set compatible with?

According to What different types of lego train tracks exist?, there have been many different kinds of LEGO track. Which kind of track can I purchase that will be compatible with this train?
3
votes
1answer
210 views

Can the DUPLO My First Number Train fit on DUPLO tracks?

I have the My First Number Train set, pictured here. This set did not come with track. Other sets, such as My First Train set, pictured here, do come with track, but the wheels look different. Can ...
8
votes
1answer
249 views

Lego® Train 60051 alternate IR remote

I live in Uganda and purchased the LEGO High-Speed Passenger Train (60051) for my two sons. I am wanting to know if anyone knows of a different remote control that I can use besides the brick remote ...
6
votes
1answer
104 views

How could I provide power and/or data coupling between train cars?

I'm trying to find a way to create a power/data coupling between train cars that can be connected/disconnected like the car coupling magnets. Has anyone done anything like this? Background: This is ...
5
votes
1answer
256 views

Electric train set not working - even though the light is on

My son just received an old LEGO 9V electric train (no model numbers or instructions) from a family member. I've set it up, and turned it on. It lights up but when I put one of the trains or just ...
10
votes
1answer
780 views

Web site with layouts for LEGO Duplo trains?

Can anybody suggest a web site with plans for LEGO Duplo trains? I've searched the net for a while without any interesting results. Any hints appreciated!
3
votes
1answer
171 views

Wiring diagram of this blue 12V switch?

I'm looking for a wiring diagram or some information about the internal connections of this switch from the blue train era. It is used for controlling the automatic points, and is visible on the ...
2
votes
0answers
99 views

Remote for Holiday Train 10254 Unresponsive [duplicate]

The remote isn't lighting up to show it's transmitting. Can't get train to run when motor is connected to IR receiver. Tried connecting motor directly to battery and it runs, albeit at warp speed. ...
7
votes
1answer
187 views

Long train Bridge tension and compression angles (minimum brick count)

Hello master builders. I'm working on my first large project (and first Lego stack overflow question). I'm making a bridge that needs to be 3 feet long. Unfortunately I don't own tons of Lego bricks. ...
0
votes
0answers
46 views

7938 LEGO train not working (not cargo train) [duplicate]

My son Joel has his 7938 train built but it's not working! Have batteries in battery box & remote control-HELP please! New batteries-assembled properly.
0
votes
0answers
65 views

Cargo Train Deluxe (7898) not running [duplicate]

I was working with the main locomotive of set 7898. I put brand new batteries in both the controller and locomotive but for some reason every time I press the button to turn on the train, the red ...
7
votes
3answers
1k views

Running Power Functions Train Without IR Receiver/Remote

I recently bought 10254 Winter Holiday Train and wanted to get it running around the provided circle of track. I was wondering if there is any way to do this without incorporating the IR receiver and ...
3
votes
2answers
341 views

How steep a grade can a LEGO train go up?

I realize this would change based on how much weight it's pulling. How about using an engine pulling 3 cars? I'm guessing that sets available for sale now would have similar power. I have the engines ...
7
votes
3answers
2k views

How to power “Power Functions” devices from an electric wall plug?

In this video showing an example of Great Ball Contraption, we can see (at 1:35) that some trains powers are used to power Power Functions motors: That must be more convenient than having to ...
5
votes
1answer
221 views

What is this “patent pending” part?

I found this part in our LEGO collection, and I'm really curious what it might be, it looks old and says "Pat. pend" on the back. Do you know? Thanks!
4
votes
2answers
96 views

Is there on/off function on the 8879 IR SPEED REMOTE CONTROL?

Hi… Just got 8879 IR Speed Remote Control yesterday. Does it have an on/off switch? We don't see one.
3
votes
2answers
258 views

Motorizing Hobby Train 10183

What are the PF motors available that will power the Hobby Train 10183? Moving out from 9v tracks, will the existing 10183 wheels fit any other tracks? Also, is there a difference between the PF ...
4
votes
1answer
1k views

LEGO G-Scale train?

I have a 45mm gauge LGB-based G-scale garden railway and want my grandson to have a push-along loco and some rolling stock for it. Can we make this with LEGO? The wheels need to be non-metal and have ...
2
votes
1answer
534 views

Is there an alternative replacement motor piece for 4.5 V Trains?

Is it possible to find on a market a simple 4.5V electric motor, that can be installed into LEGO Part 564c01? The service pack No. 5000 is more and more difficult to find.
4
votes
1answer
325 views

Where to get additional part library graphics for BlueBrick layout designer

I love BlueBrick, the track and layout designer from developer Alban Nanty. I have been using it for years and it is the best tool I have found for designing a full layout including train tracks. ...
4
votes
1answer
132 views

DUPLO Train Shopping Resources

I recently bought the 10508 train set for my 3 year old and he just loves playing with it. I am aware of the 10507 and 10506 sets to expand further. Are there any other resources available to buy ...
6
votes
1answer
508 views

How can I stop the LEGO Cargo train 60052 wheels from skidding on track?

I have the Cargo train 60052, it's only around a year old and lately I've found on starting it (on both straight and curved track pieces) it isn't moving, the wheels seem to skid on the tracks and I ...
6
votes
2answers
678 views

Emerald Night Piston replacement + jamming issue

I'm just wondering if I can get replacement piston rods for my Emerald Night, since the rods are easily the least impressive part of the model. I'm wondering if there is a form of kit that can make ...
7
votes
1answer
469 views

Are wheels from Duplo numbers' train set 10558 compatible with bridge 3774?

Are the wheels from Duplo set 10558 compatible with the railway bridge set 3774? I have a number of older wheel bases that are too large for the bridge. According to Brickset, the wheels in set 10558 ...
3
votes
1answer
123 views

LEGO set restore-er? (Emerald Night)

I just dug up my old LEGO Emerald Night from when I was 10 or so. As I lifted it from the box it was in pieces, with the only parts intact being the piston mech, tender, and passenger car. I got it ...
6
votes
1answer
207 views

What prevents a 12V motor, when pushed by hand, from providing DC electric out?

This question is somewhat related to a similar question I asked about whether pushing a 12V train motor (such as the one below) would damage it. See title "Set 7865: six wheeled Lego® train motor (...
6
votes
2answers
189 views

How can the new LEGO pneumatics be used for trains?

LEGO came out with new pneumatics. Since I'm a train guy (my wife is more into technic and already saving money for the Mercedes ;)) I was wondering, how could we apply the new things for Trains?!
4
votes
2answers
835 views

How to run two LEGO electric trains at the same time?

I have a LEGO city built with a train encircling it. The track is the classic style with metal railings running through it. I have a switch track as well that is connected to an NXT robot to switch ...
6
votes
1answer
480 views

How did the LEGO 7862 Remote Controlled Decoupling and Signal work?

I've never seen this set in person, although it appears occasionally in 12V Lego train system images. I've never seen it used, or described. How did the LEGO 7862 Remote Controlled Decoupling and ...
5
votes
1answer
215 views

Will playing with a 12V train motor by hand damage it?

This question is similar to one for PF motors. The 12V motor bogie has considerably more resistance than does the newer PF bogie motor, which may be moved very easily when not operating. So, if one ...
7
votes
3answers
3k views

How many flexible tracks does it take to make a complete oval?

I have couple of straight tracks, no curved tracks, so the only option now from me is to buy the new 7499 straight + flexible tracks. Therefore: How many boxes of 7499 tracks do I need to make a ...
13
votes
2answers
988 views

Trains overview image

I'm looking for an overview image of all trains ever released by LEGO. With trains I mean train sets containing locomotives and wagons that run on train tracks. There is a beautiful image from Jeroen ...
5
votes
2answers
1k views

Is this a real Duplo Train Base or fake?

I'm new to LEGO, so forgive me if this is a simple question. I purchased a lot of 30 Duplo Train Base from eBay. Below is the picture that accompanied the listing. There is a disclaimer stating: (...