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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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 ...
4
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1answer
118 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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1answer
53 views
can 2 powered up train motor 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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1answer
70 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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1answer
358 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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2answers
313 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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0answers
59 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.
4
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1answer
160 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 un them on the same channel.
The problem with the current disposition of the bogies is that reversing the ...
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1answer
115 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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1answer
59 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 ...
6
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2answers
1k 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 ...
4
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1answer
106 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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3answers
231 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 ...
3
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1answer
644 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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2answers
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Can PoweredUp trains talk to multiple Bluetooth remotes?
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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1answer
161 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 everything single ...
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3answers
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 ...
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1answer
1k 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 ...
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1answer
1k 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
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1answer
100 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
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1answer
809 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?
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1answer
109 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?
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2answers
117 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 ...
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1answer
426 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
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1answer
357 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=...
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2answers
435 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 ? (...
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1answer
329 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.
...
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2answers
370 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.
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1answer
211 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 ...
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2answers
443 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?
8
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1answer
810 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
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1answer
185 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?
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1answer
74 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
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1answer
226 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?
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1answer
466 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 ...
7
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1answer
333 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 ...
5
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1answer
122 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 ...
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1answer
582 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 ...
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1answer
3k 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!
2
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1answer
218 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 ...
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0answers
107 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
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1answer
225 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. ...
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0answers
51 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.
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0answers
82 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 ...
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3answers
3k 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 ...
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2answers
708 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 ...
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3answers
3k 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
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1answer
280 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!
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2answers
112 views
Is there on/off function on the 8879 IR Speed Remote Control?
Just got 8879 IR Speed Remote Control yesterday. Does it have an on/off switch? We don't see one.
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2answers
360 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 ...
