Questions tagged [trains]

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

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16 votes
1 answer
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What piece is this? It's a hard one, and a very small one. It's 2x1 I believe, and it could possibly be an accessory

This is the piece I'm looking for, because I'd like to build this microscale train myself. It may very well be the handles of two levers glued to the rest of the train, but I really don't want to ...
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4 votes
1 answer
110 views

Do Duplo trains fit Megablock train tracks?

Do Duplo trains fit Megablock train tracks (given in the picture)? Note that all the Megablock 2x2, 2x4, etc blocks fit Duplo. I just have never heard about Megablock train tracks' compatibility.
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8 votes
1 answer
206 views

Motor problems in 60051

The motor in my High Speed Passenger Train set (60051) has stopped working properly. I just put brand new batteries in and it acts just like if they were worn. Moreover, the little brown capacitor ...
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7 votes
1 answer
301 views

Old Lego duplo train not working on batteries

I've recovered my old lego duplo set from the attic, and tried to get the electric train working again. After inserting fully charged batteries, the train does start, but it's unable to pull even a ...
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  • 171
8 votes
2 answers
971 views

Minimal mine track

I want to create a mine scene on a 32x32 baseplate. I want to run a train track across the front, and then about 12 studs into the mine. Then, I want to build a couple simple mining carts on the ...
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4 votes
1 answer
383 views

Motorizing Crocodile Locomotive set 10277 - are there any sets that include hub & motor I need?

Crocodile Locomotive can be powered up by using 1 x 88009 and 1 x 88013. Reviews on hubs and motors strongly suggest it is better, financially, to buy them as part of the sets, not separately. Is ...
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9 votes
1 answer
2k views

What are black sausage pieces used for in Crocodile Locomotive set 10277?

After assembly I have these 5 pieces left. Should I have put them somewhere? I can't find any missed step that would use them. So why are these there at all?
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  • 1,389
6 votes
1 answer
368 views

Train with two Powered Up hubs

I'm building a motorized train. The locomotive has two Powered Up train motors, one at each end. However, no matter where I place the hub inside the locomotive, the wires on the train motors are too ...
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14 votes
2 answers
2k views

How tall is a Lego train on a track?

I cannot currently access any Lego trains, and the product range offered in the trains category in these years is rather ... disheartening. Nonetheless, I do not rule out the possibility that things ...
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  • 1,730
12 votes
3 answers
466 views

Train level crossing using 2021 road plates

I'm interested in integrating a train level crossing into a city layout using the new road plates, but I've been struggling to figure out the best way to do this. Here's an example level crossing for ...
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1 vote
2 answers
107 views

Remote control for a battery operated train

I have a battery-operated Christmas train and would like to make it remote-controlled but don't know what I need to buy for a transmitter and receiver. Could someone please tell me?
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11 votes
1 answer
163 views

12V LEGO train tracks splinter

I have an older 12V LEGO train (several actually) but of course the rubber tires wore out long ago. The trains still run quite well (I even used them as a motor parts in some Technic designs), but the ...
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8 votes
2 answers
863 views

Options for powering Winter Holiday Train

Is there a way to make the Winter Holiday Train powered without the IR receiver or Remote Control? I only set it up at Christmas time and just want it to go around the track at the one speed. I want ...
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4 votes
2 answers
217 views

Does remote control 8879 work for winter holiday train?

Can anyone tell me if the remote control 8879 will actually stop and start the 10254 Winter Holiday Train set?
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4 votes
2 answers
407 views

Lubricating train axles - which oil to use?

I have a lot of old (80s grey era and 90s 9v) trains. Some of the wheels squeak and many have quite a bit of friction. Sometimes this friction causes the locomotive to detach from the rollingstock ...
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2 votes
2 answers
702 views

Duplo 10874 engine lacks sound without app

I have inherited this set which works perfectly apart from the fact that there is no sound from the engine. It clearly reads all the colours on the action bricks because, when used with the app, the ...
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5 votes
1 answer
196 views

Looking for older conducting train tracks

I have an old 9V era (1991-2006) train set that has conducting tracks. Is there a place that I can buy conducting tracks? Obviously I have trolled eBay, Amazon and internet without success. I can buy ...
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4 votes
0 answers
156 views

Repairing a 12V switch motor

My son caused me to dig up my old 12V lego trains. Surprisingly they mostly work, except for one part: https://www.bricklink.com/v2/catalog/catalogitem.page?P=70026&idColor=9#T=C&C=9 This is ...
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  • 141
0 votes
1 answer
601 views

Can the Hogwarts Express train be motorised? [closed]

Can a Power Functions motor be fitted into the LEGO "Hogwarts Express" train? I have a spare motor and battery box and would like to fit them into this train.
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2 votes
0 answers
45 views

Train track design [duplicate]

I have some old lego train tracks from 1984 set: 7715 and I would like to use them with my latest Lego train set: 60197 to increase the size of my layout, are these tracks compatible? or can they be ...
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5 votes
2 answers
839 views

60197 Passenger Train control problem

Weird problem here. My son has had the 60197 train for about a year and I decided to try out the powered-up app for the first time today. After what seemed to be some kind of software update, which ...
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5 votes
2 answers
2k views

Choosing scale for train models: what scale is "L-gauge"?

So, after being a LEGO fan for 40+ years, I'd like to try my luck at building some scale models of train sets (for example, an ICE 2). In planning my build, I ran into some difficulties or doubts ...
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2 votes
1 answer
357 views

PF: One battery block, one IR receiver, two motors on same port

I have a heavy train with Power Functions. Now I want to use two train motors on the single loco. But as I understand, this is not possible with original LEGO parts? Do I need something like a three-...
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6 votes
1 answer
182 views

Lego Duplo Train Track Switcher washable? / Best way to clean them?

I've found some pretty old Lego Duplo train track parts, that I'm looking to sell on Ebay. As these are pretty old and caked with dust, I wanted to used my usual method I usually use to clean all ...
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6 votes
3 answers
6k views

LEGO train 60198 isn't working

Battery box on my LEGO train 60198 is flashing green and orange, then after few seconds it suddenly turns off itself. I've tried resetting it by pushing the button on the train until it turns purple,...
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5 votes
1 answer
101 views

Do Thomas the Tank Engine Duplo trains seat figures?

Lego made Thomas the Tank Engine licensed Duplo sets in the 2000's decade at the same scale as current Duplo trains. Do the Thomas trains seat Duplo figures like current trains do? I've seen some ...
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7 votes
4 answers
4k views

How to disassemble the propulsion wheels of the LEGO/DUPLO train engine base part# 28743 drivetrain?

I have a push and go motor, also known as Hub No5 model also known as engine base part #28743 The issue I have is that the train can not climb the bridge anymore, unless using the locomotive alone ...
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2 votes
1 answer
121 views

Does Power Functions 88002 fit a gray-era train and run on gray-era tracks?

Is the Power Functions Train Motor (set 88002) the right height for a gray-era train (set 7745)? Does the Power Functions Train Motor run OK on gray-era tracks?
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3 votes
1 answer
173 views

Schematic and program listing of 28743?

Looking for more info on circuit board of 28743. E.g. what is the processor used? Would like to be able to reprogram the chip. E.g. program the train to stop on the third STOP directive strip, or ...
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  • 31
14 votes
1 answer
2k views

Will Duplo trains fit onto a regular 6 stud LEGO track?

There's a thread here establishing that regular LEGO trains arguably fit onto Duplo track, but have trouble with underbelly clearance. What about the opposite? Will a Duplo train fit onto six-stud ...
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2 votes
2 answers
1k views

Looking for a way to connect SG90 servo motor to Lego Technic hole in a brick, in order to control Lego train tack switch

After looking at this question: Can I remotly control the points on PF train tracks? I got the idea of controlling the train track switch handle using a servo motor that will be able to move the ...
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7 votes
1 answer
738 views

Will the Duplo train track extension set 10872 work with Duplo train set 2700?

I am thinking about buying the Duplo train expansion set 10872 Train Bridge and Tracks for my niece, but her primary Duplo train set is actually a vintage 1983 2700 Freight Train set from her father's ...
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8 votes
1 answer
886 views

DUPLO Train Action Bricks

I have the weirdest thing with my son's set. Currently one of the yellow action tiles honks the horn but the other yellow brick does not. No matter the lighting conditions, the position, orientation,...
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7 votes
1 answer
762 views

6 x 14 plate with 2x12 plate molded on top and metal contacts on the bottom identification

Needing help identifying this part as I was offered a small bag of vintage train parts and this come with some very unknown parts to me. I just recently got out of a 33 year old Dark Age and have ...
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11 votes
1 answer
436 views

What is the purpose of the discontinuity in the DUPLO train bridge rack?

DUPLO bridge elements include racks to allow the powered trains to be able to make the climb. An example of this is element 35138: I noticed that the gear rack on this element is not continuous at ...
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6 votes
2 answers
2k views

Lego track switch doesn't close properly

Just two weeks ago, my kid got a 60198 cargo train and we added a set of 60238 switching tracks. With two (out of three) switches we have the problem that the switch doesn't close properly anymore to ...
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  • 163
1 vote
1 answer
697 views

Can two Powered Up train motors be plugged into one hub

I have set #60198 and it comes with one Powered Up motor. I'm hauling many many cars and one motor isn't enough any more. I see there is a slot for "B" on the hub. Is it possible to plug in another ...
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  • 167
1 vote
1 answer
125 views

My DUPLO railroad engine stops after 20cm

My DUPLO railroad engine stops after 20cm moving. I suppose the sensor in the front axle is damaged. So is it possible to repair it?
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5 votes
1 answer
432 views

Is there a hobbyist standard for Trains track modules?

Many non-LEGO model railroaders have standardized track module standards allowing for interchangeability of (often highly-decorated) track sections (due to availability, damage, scheduling, etc.) as ...
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10 votes
3 answers
6k views

How does the DUPLO Action Bricks work?

Does anybody knows what is the technology the DUPLO Action Bricks are based on?It is not any RFID or NFC because I printed out the white one on normal white paper which turns lights on/off. The symbol ...
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  • 103
2 votes
0 answers
90 views

Narrow gauge train wheels metal axle?

Anyone know some way, (or someone that makes a mod) to make narrow gauge wheels that actually roll fast? Something similar to the metal axle trucks that are used for standard gauge trains.
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  • 21
5 votes
2 answers
2k views

Two LEGO Powered Up engines with reverse direction

I have 2 LEGO 60197 City Passenger Trains and I would like to attach both sets together and run them on the same channel. The problem with the current disposition of the bogies is that reversing the ...
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  • 1,306
0 votes
1 answer
397 views

why isn't lego updating the 9V train sets to the current system? [closed]

My son is getting to the age where he is ready for the Lego trains. I looked through the City and Train sets. It seems that Lego really recycles the Fire and Police themes over and over again, while ...
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  • 167
1 vote
1 answer
79 views

Can I push the train of 60052 [duplicate]

We more like to push trains with hand. There were old ones, like the train of set 2741, where when pushing the engine, the contact became loose between the axis and the cog wheel. Can I count some ...
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12 votes
2 answers
14k views

Multiple Powered Up trains on 1 Bluetooth controller?

My daughter got a Passenger Train for Christmas and I converted one of my old 9v trains to run using the powered up system. Is it possible to run the 2 trains independently or concurrently (preferably ...
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  • 123
4 votes
1 answer
231 views

Can You Identify These Black Studless 2x4 Brick With Train Wheels?

I found a bunch of Pat Pend LEGO in a thrift shop. Among all the goodies there are two black smooth 2x4 bricks with train wheels attached to them. Their characteristics are as followed: They are ...
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7 votes
3 answers
2k views

How do I make trains which fit LEGO rails (6 studs)?

Christmas is coming and my son (7) is asking for trains. I was planning to buy a set, but they are expensive, and I think it is a bit too advanced for my son. Therefore I decided to buy a box of ...
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  • 71
6 votes
1 answer
3k views

Has anyone tried putting the Powered Up system in the Christmas train?

Just wondering if anyone has taken the powered-up ("Power Functions 2.0") Bluetooth system out of the Cargo Train 60198 or Passenger Train 60197 sets and put it in the Winter Holiday Train set 10254?
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  • 163
6 votes
3 answers
1k views

Can several users control one Powered Up train using different devices?

According to this review of the new 60197 passenger train you can only have one Bluetooth thing talk to the new LEGO battery box at a time. The new Power Up system as it currently appears in this ...
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  • 5,089
9 votes
2 answers
531 views

Duplo Locomotive: What is this inner part used for?

Background I was forced to completely disassemble a duplo locomotive. My son played with it in a sand box and, guess what, it was not working anymore. I used a small brush to clean every single part (...
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