Questions tagged [9v]
Questions related to the 9V systems used to power LEGO sets.
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 ...
Repairing disintegrated old 9V wire
I have a number of old technic motors and battery boxes I would like to use however the wires have disintegrated in storage to the point that the metal conductors touch and short out. Does anybody ...
What are the electrical properties of electric LEGO systems?
Several electric LEGO systems exist: LEGO Trains LEGO Technic Power Functions (PF) LEGO Mindstorms (in several versions) ...? How do these systems differ in electrical properties and which systems ...
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 the ...
What is the maximum voltage for motors from Cybermaster units?
I recently bought a non-functioning Cybermaster unit [part:71797]. As the motors in there might be perfectly fine, I'd like to use them. I could not find information on these motors (as opposed to ...
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 ...
9v Regulator Power Question, 1 enough or multiple?
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 ...
What is the correct input voltage for the 9v Lego train speed regulator?
I wanted to buy a transformer for the speed regulator, so based on this image, I bought a transformer with 12V DC output. It works. However, discussing this with a fellow AFOL, he pointed out that ...
Classic 9V battery box current limiter?
Recently I disassembled a classic 4760c01 Electric 9V Battery Box Small Complete Assembly to see what was inside. Battery Box: Disassembled: In the switch component, we find what appears to be a ...
Can 10153 9V train motor be powered by the Power Functions Battery pack?
I am currently making the switch to Power Functions with my Lego Train collection and am wondering if I can power the old 9v motors that I used with the metal rails, with a battery box from the power ...
Which pre-2000 set had a mobile crane with lights?
I had a set similar to this when I was younger (I am fairly sure this was before the year 2000), although: The model was red, rather than yellow. The model was more of a breakdown truck, rather than ...
Which train motor is more powerful, 9V or 12V?
I recently picked up LEGO bricks again and due to lack of space I'm planning to build a multilevel train layout. I do have a descent amount of 12V track along with trains and switch points, but I was ...
How can I wire up the LEGO 2838?
I would like to know how to hook up the LEGO 2838 9v motor. I understand that the Power Functions extension wire is compatible with the 9v system, but how on earth do I wire them up?
9v and Power Functions Hybrid?
I am building a train layout and I am running some of my track through a tunnel. I would like to know if I could hook up a 9v train motor at the opposite end of my train. The front will use Power ...
What kind of metal/alloy were on the old LEGO 9V train tracks?
LEGO's train tracks (the actual rail part) were made from some kind of metal alloy that does not seem to oxidize, and seems to have good electrical charateristics (low resistance). Any ideas what ...
My Own Train vs. other 9v trains
Does My Own Train series have any pros and cons (or pitfalls) against other 9v trains? Seems that is a rich series but less popular comparing to, for example, Santa Fe or regular City sets. Why?
How hard is it to convert the new(ish) RC/PF trains to 9V?
I have a HUGE investment in 9V trains (think many thousands of USD) and was wondering how difficult it is to convert the newer RC/PF train systems over to 9V motors? Do the 9V motors fit? Does the ...