Questions tagged [trains]

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

Filter by
Sorted by
Tagged with
1 vote
1 answer
167 views

DUPLO cargo train 10875 blue action brick has no effect

I bought my daughter Cargo Train 10875 and it all works OK with one exception—the blue action brick has no effect. The other action bricks all have some noticeable effect. I asked LEGO to send me a ...
Adam Ralph's user avatar
2 votes
2 answers
156 views

How to connect & program Powered Up train motor?

I'm new to LEGO and am trying to motorize my Hogwarts Express train. Per the LEGO site, I bought the 88011 Train Motor and the 88006 Move Hub. But I can't figure out how to use them. I connected the ...
Greg's user avatar
  • 31
3 votes
2 answers
168 views

Getting more tracks for 9V trains [duplicate]

I own sets 4551 (Crocodile Locomotive) and 4583 (Load N' Haul Railroad). The rails are 9V conduction type with metal top. How can I get additional rail to extend my line? Can I use RC/PF rails and get ...
Sunrider710's user avatar
3 votes
1 answer
163 views

DUPLO train engine base part# 28743 engine is not working

I've went through all of the steps here: How to disassemble the propulsion wheels of the LEGO/DUPLO train engine base part# 28743 drivetrain? which was a great learning exercise but unfortunately it ...
user3779502's user avatar
3 votes
0 answers
155 views

Building technique for modelling Thomas the Tank Engine faces

I'm building Thomas the Tank Engine trains, and I'm looking for techniques to build realistic faces. I'd like the trains be able to run on standard LEGO rails, so I'm targeting 8-wide engines. This ...
jncraton's user avatar
  • 40.5k
1 vote
0 answers
114 views

LEGO Express 60197 displays low battery

Using new batteries to power the controller - however on connecting the app using Bluetooth the status immediately shows low battery. Uninstalled the app and reinstalled it with new set of batteries, ...
Seattle's user avatar
  • 11
24 votes
1 answer
9k views

How can I motorize the Hogwarts Express (76423)

I'd like to motorize this train set: What is the best way to accomplish this?
jncraton's user avatar
  • 40.5k
2 votes
2 answers
167 views

How to convert Passenger Train 7745 from 12V to Powered-Up?

I would like to convert the High-Speed City Express Passenger Train Set 7745 from the 12V track system to the Powered-Up system. It seems to be trivial to exchange the old wheels with the new wheels, ...
Jonas Stein's user avatar
3 votes
3 answers
114 views

Replacement for the Rubber Rim of a 12V Train Motor

The 12V Train Motor Item No: 7865-1 needs a rubber train rim for traction. Unfortunately I could not find any new ones and the old rubber of used items dried out. The rim must be soft and rough, but ...
Jonas Stein's user avatar
7 votes
2 answers
2k views

Why does my 60198 train get lots of wheel spin?

I was running my 60198 train with the 60197 carriages attached (carriages from 60198 also on the train). My train has started to get lots of wheel spin even while on flat ground. What can I do?
The CSX 425's user avatar
3 votes
2 answers
310 views

How to power on and adjust speed for a PU Train 88011

I'm doing a project for my kiddos. I'm trying to find the schematics of a lego train motor 88011, I want to control them using an ESP32 through a telegram bot. I have the ESP32 and the telegram bot ...
Eduardo's user avatar
  • 31
5 votes
1 answer
462 views

Can 9V train motors be linked and work together via the top power stud connection?

I'm building a MOC based on the 10219 Maersk Train, but going for the classic track power 9V system given the removal of need for batteries and slowly increasing availability of new 9V parts from ...
Jazzyamx's user avatar
  • 153
18 votes
1 answer
7k views

Why was the monorail system discontinued?

I'm a casual Lego enjoyer and decided to research some old sets and found out about the old monorail system. My question is why was it discontinued? It was a pretty neat system and I could see ...
redfrogcrab's user avatar
0 votes
2 answers
227 views

Kazi train - struggles to run, maybe due to weight

I've ordered 2 Kazi trains on aliexpress. Seemed like a nice set with some tracks for my kids. As seen below it's a set where the power box is a separate part and it runs a motor that connects to the ...
Debely's user avatar
  • 21
3 votes
2 answers
405 views

Convert 9V train to Powered Up

This is a follow-up from question "Can I convert my train 9V 4563 to the Power Functions motor?", now that Power Functions motors have been phased out in favour of Powered Up motors. How can ...
IvanSanchez's user avatar
  • 8,659
46 votes
3 answers
34k views

Can LEGO City Powered Up trains be automated?

I have a LEGO City train set (60336): The set includes a remote control as well as an app that can be used to control the train. Is it possible to automate the operation of LEGO City trains, ideally ...
jncraton's user avatar
  • 40.5k
5 votes
2 answers
982 views

Identify this part, looks like a black handheld controller

Does anyone have information about this LEGO item? It appears to be an infrared controller. Maybe for an old LEGO train.
Vince's user avatar
  • 1,347
4 votes
1 answer
1k views

LEGO Duplo cargo train - traction problem on bridge

I bought my son a 10875 cargo train. The train is great for playing, but I have a problem with crossing the bridge. I saw that this is common problem with 10875 and 10874 LEGO Duplo trains, so I would ...
Oluka's user avatar
  • 41
5 votes
1 answer
222 views

Do Duplo train cars with two female ends exist?

Most Duplo train cars have a male and a female connector, such as Duplo Car Base 2 x 6 with Red Wheels with Fake Bolts and Open Hitch End. Since most tractors, in the widest meaning of cars meant to ...
Maxime's user avatar
  • 195
9 votes
1 answer
2k views

Is there any difference in the power, wheel, and track technology between 2018 trains and 2022 trains?

LEGO came out with 60197 City Passenger Train and 60198 City Cargo Train in 2018. Much more recently they released very similar sets 60337 City Express Passenger Train and 60336 City Freight Train. ...
Village's user avatar
  • 747
6 votes
1 answer
264 views

Railway track layout - is there a method to say if track layout meets up

I'd 2 circles of original blue railway track, lost 1 inner, bought mixed batch of track off eBay, as more inner than outer bought more track & to get discount 12 outer & 4 inner to bring N° of ...
Andrew Hodson's user avatar
5 votes
0 answers
158 views

IR remote 8879 - cannot control speed of the motor

I got the 7938 train set for my kid. I hook up the battery to the receiver and try the IR remote 8879 with it. The motor starts running/spinning, but I can not control the speed with the orange "...
Henrik Dahl's user avatar
2 votes
1 answer
256 views

Where can I get replacement battery connectors for old Lego Duplo Train?

I have the same Duplo Train that Pieterjan posted a picture and video of in September ('Old Lego duplo train not working on batteries'). In my case, it is clear that the battery connectors are ...
Andrew Plasom-Scott's user avatar
18 votes
1 answer
3k views

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 ...
Stephen's user avatar
  • 291
4 votes
1 answer
316 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.
Thang Tran's user avatar
8 votes
1 answer
411 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 ...
Heki's user avatar
  • 181
7 votes
1 answer
1k 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 ...
Pieterjan's user avatar
  • 171
8 votes
2 answers
1k 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 ...
Monte Gardner's user avatar
4 votes
1 answer
506 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 ...
Mołot's user avatar
  • 1,409
10 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?
Mołot's user avatar
  • 1,409
6 votes
1 answer
991 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 ...
user avatar
15 votes
2 answers
3k 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 ...
O. R. Mapper's user avatar
  • 1,930
14 votes
4 answers
863 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 ...
jncraton's user avatar
  • 40.5k
1 vote
2 answers
193 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?
Edward k. Stenger's user avatar
11 votes
1 answer
280 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 ...
StarShine's user avatar
  • 211
8 votes
2 answers
1k 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 ...
KazDok's user avatar
  • 81
4 votes
2 answers
520 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?
Patrick's user avatar
  • 41
4 votes
2 answers
840 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 ...
mcqwerty's user avatar
  • 3,518
2 votes
2 answers
2k 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 ...
Lindsey Philpot's user avatar
5 votes
1 answer
216 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 ...
Karlkkm's user avatar
  • 51
5 votes
1 answer
283 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 - Electric, Train 12V Remote Control Switch Motor 4 x 8 x 1 2/3: This is the motor that drives ...
hyperman's user avatar
  • 151
0 votes
1 answer
699 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.
joedub 55's user avatar
2 votes
0 answers
49 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 ...
joedub 55's user avatar
6 votes
2 answers
2k 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 ...
Tim Forsyth's user avatar
7 votes
5 answers
3k 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 ...
raner's user avatar
  • 203
2 votes
1 answer
523 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-...
Denis's user avatar
  • 123
6 votes
1 answer
253 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 ...
Vincent Guttmann's user avatar
6 votes
3 answers
16k 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,...
user15038's user avatar
5 votes
1 answer
162 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 ...
Robert Columbia's user avatar
11 votes
6 answers
8k 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 ...
HpTerm's user avatar
  • 243