A category of powered LEGO products which offer direct and remote control of action bricks.

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3
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2answers
37 views

Gearing down a PF XL

I'm looking for the best way to gear down a Power Function XL. I need to achieve a very slow output RPM (less than 1-2 RPM). I've tried a 625:1 gear (trough 40:8 gear). Can someone link to a well ...
3
votes
2answers
127 views

What are the largest LEGO® Power train sets available commercially?

What set(s) are the largest by number of pieces? These sets could be retired or existing. I am also curious what set(s) have the most rails pieces included.
4
votes
2answers
50 views

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 ...
3
votes
2answers
84 views

Lego Motor for cycling a tool

I am curios to know if I can utilise the Lego Power range to rotate a transducer to a set point and return to its original position and if so is it able to cycle the movements repetitively? Ideally I ...
4
votes
1answer
191 views

How to build an automatic Lego train system?

I was wondering if anybody has ever tried using the IRLink NXT sensor to make an automated train system and if so, what kind of setup did you have to make it all work? I have been working on a train ...
6
votes
3answers
115 views

Ideas to slow down RC PF train motor (Item: 88002)

I'm wondering if you already tried to slow down such a motor. I would like the train to run slower at all the supported 7 speeds. Anyway, at speed 7, the train just flies off the tracks.
1
vote
1answer
93 views

What is the input to the 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 ...
0
votes
1answer
460 views

LEGO Power Functions M-Motor 8883 characteristics

I have a couple questions about LEGO Power Functions M-Motor 8883 (http://shop.lego.com/en-US/LEGO-Power-Functions-M-Motor-8883): Is it synchronous or asynchronous? It is powered by AC or DC?
4
votes
2answers
296 views

Battery for Trains

For those who have tried, which one is a better option: Rechargeable Battery Box and Transformer/Charger 10VDC ($50 + $25) or AAA Battery Box and a lot of AAA batteries ($13 + ?) Obviously $75 is ...
4
votes
3answers
3k views

How to use Power Functions with Mindstorms EV3?

Having learned that Mindstorms EV3 doesn't work directly with Power Functions, Q: Can you use Power Functions motors with the EV3 programmable brick? A: No, the connector does not match. I ...
5
votes
1answer
534 views

Buying another kit instead of 8293-1: Motor Set?

I want to get some motors but don't know if it is a better idea to buy 8293-1: Motor Set or try obtain motors from some other sets. Is there any kit challenging 8293?
6
votes
1answer
151 views

Can anyone help me identify the motor/mechanism used in this?

I've been trying to recreate the Useless Machine found here: http://www.youtube.com/watch?v=QdKtgfmfA7s&feature=c4-overview&playnext=1&list=TLp4R5S7LPESk In the description, there's a ...
4
votes
1answer
252 views

Motor, receiver and battery combos

What combination of motor/Receiver/battery boxes are possible/supported? example: 2x XL motors, 1x M Motor, 1 light using 1 receiver and 1 battery box.
7
votes
3answers
3k views

Which LEGO Technic sets include instructions to add the Power Functions accessory box?

Some LEGO Technic sets apparently come with instructions to add a motor, using the pieces from the Power Function Accessory Box (set 8293). Is there a list of the sets which do contain such ...
6
votes
1answer
530 views

How to improve the range of an IR receiver?

I am creating a new Truck which contains two IR receivers in the front hood. With my testing I get a range of about 6 feet (I have also noticed the small Technic motors on the IR receiver are slow ...
4
votes
1answer
119 views

What is new about the IR receiver in the 4x4 Crawler 9398?

Reading a review of the 4x4 it seems the IR receiver is different from what is included with the trains. From the review all the information we got was "improved CMOS motor driver with lower power ...
12
votes
3answers
576 views

Is there a way to remotely operate the push-button light brick?

The push-button light brick seems to be popular with Lego at the moment, and included in quite a few sets. I'd like to find a way of being able to operate it remotely, so that I can include the ...
12
votes
2answers
629 views

Will playing with a train motor by hand damage it?

If you play with a train that is PF-motorized by hand, will you damage the motor? Or any of the other parts (IR Receiver, Battery box)? It is essentially working as a generator when turned by hand, ...
8
votes
1answer
786 views

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 ...
5
votes
3answers
528 views

Making or buying a really long Power Functions cable

I'm working on a train layout and have built 2 automatic switches for the switch track. Each switch track is powered by M-Motor. I'd like to connect the 2 motors to a single IR receiver and battery ...
5
votes
1answer
930 views

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 ...
6
votes
2answers
899 views

Does the PF Servo motor return to center?

Does the PF Servo motor, which was introduced in the 9398: 4x4 Crawler model, have return to center feature?
10
votes
3answers
2k views

What's the best way to link two (or more) LEGO Power Functions (PF) train motors together?

Last Christmas I built an extended Emerald Night train to run around the tree. To get it to work I had to add a second Power Functions motor. I tuned both IR receivers to the same frequency and slowly ...
1
vote
0answers
351 views

How do you secure a power function motor to a technic extreme cruiser? [closed]

I am trying to help my son install a power function m motor in his Technic extreme cruiser. We found a good place to put the motor and if we hold it in place it does drive the rear wheels. The ...
9
votes
1answer
760 views

What is the difference between train motors 88002 and 10153?

I want to motorize my Santa Fe Super Chief. Its original instruction mentions 5300 but it's marked obsolete on BS.com and now re-released as 10153. In the same time 88002 costs few times less, e.g. ...
7
votes
2answers
663 views

How to fix my XL motor?

I used the XL motor near water. Now it stopped working. Can someone tell me what I can do to fix it?
5
votes
1answer
104 views

Inverting voltage to PF motor

I often use separate PF motor for each driven wheel. Sometimes the most interesting design of mechanism requires opposite polarity of power supply to motors. Is there any simple non-destructive way to ...
7
votes
1answer
1k views

What IR Codes are the Power Function remotes sending to the receiver?

The PF IR Speed Remote Control (the train one) is "7 speeds" but as I turn the dial to make it go faster it's hard to tell what speed it's at. I wonder if I could setup my programmable remote so that ...
6
votes
1answer
1k views

Does the Power Functions IR Remote Control 8885 make a good remote for a car?

I have the Power Functions IR Speed Remote Control 8879 and it's great for, well, the train it came with and maybe other applications where you don't need precise control. 8885 looks like it would ...
9
votes
2answers
571 views

Is it possible to add the power functions to Western Train Chase?

I recently got the Red Cargo Train and it's a great Lego set but a Cars themed train going around my Christmas tree would be even better. Has anyone gotten the power functions to work on the Western ...
7
votes
3answers
5k views

What parts are really required to motorize 10219 Maersk Train?

The Official site detailed page states that: Motorize your Maersk train by adding LEGO Power Functions #8878 Rechargeable Battery Box, #8887 Transformer 10V DC, #8884 IR Receiver, #8879 IR Speed ...
10
votes
1answer
1k views

Can I use a generic (non-Lego) transformer with a rechargable Power Functions battery?

I've recently ordered a LEGO® 8878 Rechargeable Battery Box: I was wondering if I really need to get the (rather expensive) LEGO® Power Functions Transformer or if I can substitute a (cheaper) ...
11
votes
1answer
502 views

Steering mechanism for City-scale vehicle

I'd like to build city-scale (6 studs wide) motorized vehicles with PF remote control. There are already several suggestions on how to motorize wheels. The next challenge is steering mechanism that ...
10
votes
3answers
2k views

Can I remotly control the points on PF train tracks?

I'm interested in investing in power functions based trains, but want to automate switching points. Is this possible? What is the cheapest / easiest way of achieving this?
19
votes
3answers
4k views

How can I build a functional gearbox?

I'm looking for a fully functional (manual) transmission / gearbox for my Technics motorized vehicle. How can I build this?
17
votes
3answers
943 views

How would you make a good pivot-arm suspension?

I once tried to make a 4 wheeled Lego robot using a pivot arm suspension system. The robot was motorized using 2 Mindstorm (2.0) motors (one one each side). I can't find and original picture but it ...
16
votes
5answers
2k views

How can I motorize City-scale wheels?

I'd like to build city-scale (6 studs wide) vehicles motorized with either PF motor or clockwork. The primary problem right now is connecting wheel(s) to motor. Are there small enough LEGO wheels with ...
26
votes
6answers
5k views

What are the best options for building a LEGO RC car?

I would like to build a remote controlled car. And if someone already has a good solution for that I would be glad to try it. It's been a while since I had the time and material to build some LEGO ...