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Showing results for tags 'pf'.
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Audi 80 Quattro Rally
Epic Technic posted a topic in LEGO Technic, Mindstorms, Model Team and Scale Modeling
Back in August I was inspired by gsia17's Citroen Saxo preview to build a rally car.Sadly I don't have a buggy motor so I made the next best thing, a large scale model of the best rally car in the history of man kind, the Audi 80 Quattro Rally. This was my hardest build yet; it had many firsts for me. I used the 42000 Grand Prix's hubs for the double wishbone independent suspension on all wheels. I had trouble making the front suspension, steering, and power transfer with a differential so I made it hard coupled. I used CV joints with the 42000 steered hubs for the front which makes it have a terrible steering angle. Some pictures: A preview video is on my YouTube channel but I am editing the main video right now. I will update this post tomorrow and/or in days to come. Thank You, Epic Technic Please give comments, I want to know how to improve and what did well! :) -
Since I first build my Emerald Night I have wanted to improve the way it runs with PF. There are several things I don’t like with the original instructions on motorization. Here are the issues I want to improve on: - I don’t like the way the IR-reciever points out and break the nice lines on top of the boiler. - I don’t like the placement of the XL-motor which removes nice details. - I think the train runs rather jerky with the original setup. So, I have done some modifications that helps with some of the problems: - I have done the fix with the sylinders as described here: http://www.eurobrick...showtopic=37468 - I have also done the other fixes mentioned in issue 7 of Railbricks. - I have removed the gear on the biggest wheel that is used when the train is powered by the XL-motor, so no internal gearing is slowing the train down. - I have build a tender that consists of a train motor 88002, a PF battery box (directly above the train motor) and a IR-reciever. The tender itself reminds a lot about this 9V tender: http://www.carolinat...ld-night-to-9v/. By placing all the PF-elements in the tender I can hide all the elements nicely. When I run the tender alone it runs smoothly through curves and switch points, but when I place the engine in fronts it stops and spins in both curves and in switch points. Any idea on what I could do to solve this problem?
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Hello all! New here to Eurobricks and the whole AFOL Trains community in general. I have noticed that there there are essentially two different train systems the 9v (runs on metal rails using a DC current from a transformer like a normal model railroad) and then Power Functions. I unfortunately don't have any of either to experiment with but I was just thinking would it be possible to merge the two and create a kind of DCC system? (Digital Command Control - current standard for powering and controlling model railroads) What I mean is this, you have the PF system that uses a battery pack, IR or RF receiver to power either a "train motor" or another motor that uses Technick gears etc, to power the wheels. Could not one remove the actual motor from the 9v train motor housing and use the metal wheels as contacts to pass the current through from the metal track to your PF control system? This way you would not have to break your layout into Power Districts and you would be able to run multiple trains on the same line under completely different control. Each train would be controlled by it's unique PF controller yet pulling the same current from the rails. Essentially moving the battery pack from a pack of batteries in the locomotive or tender and placing it in the rails where you no longer have to worry about charging or bringing extra batteries. I haven't been around long enough to see of you guys are doing this yet or not, but just thought I'd throw it out there. As I stated, I unfortunately don't have either system (or trains) to experiment with but will as soon as I have the coin. I recently downloaded LDD and built an MOC that I designed to run in either system or both. I've always been an FOL and trains but never have been able to bring the two together until I downloaded LDD. Let me know what you think of combining both 9v and PF and I'd love some feedback on my MOC in the link below. I went for detail so it turned out to be about to scale so wider and I'm sure taller than the standard size, though still on the Lego standard gauge track. Cheers! https://www.flickr.com/photos/128636628@N08/
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Hi. I own set 42029 - Customized Pick-Up Truck and I would like to motorize it (steering, driving) and add remote control. I have no experience with Lego Power Functions so I need some help in choosing PF parts: 1. RC: 8885 - this quite popular and is cheaper than 8879 so it is probably the best option. 2. Drive motor: XL Motor - this has the biggest mechanical power of all three (M, L, XL) motors so with proper gears it should give the best possible speed to my car ? 3. Steering motor: M Motor - or servo motor(88004) - which of this two should I choose ? Does servo motor has any advantage over classic motor ? 4. IR receiver: v1 or v2 ? Has anybody compared this two receivers ? Is v2 noticeable better than v1 ? 5. Battery box: smaller (88000) or bigger(8881) ? Smaller is more expensive, supports AAA batteries so it will be lighter. Bigger will be heavier but is chaper and has beams attached - which gives me more options for some future MOC constructions. What do you think ? I`m also curious about your opinions on Sbrick. At first glance it looks interesting. The only "drawback" i can think of is that controlling model by touching smartphone screen is less comfortable than with RC pad... . Cheers, Tomek
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Very nifty 2-speed gearbox (in a very cool model)
Kumbbl posted a topic in LEGO Technic, Mindstorms, Model Team and Scale Modeling
Has anybody seen this fancy dragster? looks awesome and has a very nifty 2-speed gearbox - at least for somethink like a dragster very smart... -
Hello everybody, this is my first post, welcome to me ;) First: Sorry for my english. i got a question: Thare is a way to switch direction (or maybe stop the train) like the old 4,5v trains? I got a end of line bumbper, and i need to stop the train or invert direction on it via power function. Thx everyB in adv
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Hey Guys! Everyone has that one story where they find a set for a great price! This is the place to share it! I love to hear stories like these as it also brings up what sites so others may be able to find deals there too! It can be anywhere from when you were a child to present, 60's, 70's, etc. I will start! I bought an MISB 4533 (9v Era Snow plow) off ebay for about $35 this year, the cheapest I have seen them was $45 dollars. Saved me $10 (Hopefully a good investment) Sealed 4533 by Railco1, on Flickr Also on ebay I got an MISB 4541 Road and Rail, for $40 the cheapest I have seen being sold is $65, savings of $25! Sealed 4541 by Railco1, on Flickr I cannot wait to hear everyone's stories. This is meant to be fun and an enjoyable thread. Enjoy! -RailCo [Moderators! this is meant to be an on going topic so if people post on it a year late, that should be okay]
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[MOC] Astromech FP-08
Fissl posted a topic in LEGO Technic, Mindstorms, Model Team and Scale Modeling
Hey guys! I had a lot of fun bulding this little droid, so I decided to go one step further and to build an bigger and more complex astromech. As it turned out it took a lot of time until I was satisfied with performance and size Dimensions: weight: 2348g height: 46 studs with antenna width: 33 studs depth: 25 studs PF: 2x IR-receiver 2x L motor 3x M motor 3x extension wire 1x battery box Drive: The drivetrain is quite simple: skid steering powerd by two L motors geared 1:2.799 Functions: Because I wanted more seperated funtions than one IR-receiver can provide I came up with two solutions. The hatch can be opened and closed. It's connected to a distribution gearbox, so when it's closed power is provided to the tilt mechanism. In the moment you open the hatch, the power will be provided to a serial valve control for two pneumatic valves. These valves are for the outrigger and the claw. The antenna is connected with some beams to the valve control, so I have optical feedback of the valve status. For air supply there is an automatic compressor with two grey pumps and also a nice two cylinder fake engine here is a short video. enjoy! P.S: well something went wrong as you can see at the title of my topic so...Jim or someone else: could you please change the title to: "[MOC] astromech FP-08" ? That would be great! thx -
[MOC] American 4-axle Dump Truck
Waler posted a topic in LEGO Technic, Mindstorms, Model Team and Scale Modeling
Hi Folks It’s been a long time since I presented my last creation so it’s good time to show something new. Maybe this MOC it is not so fresh (I built it almost 2 months ago) but I think worth to present. The truck was built to my local Lug (LugPol) competition and the goal was that the wining truck will be an accompany to the 42030 Volvo L350F on our Lug exhibition. There was three other trucks built to this contest. But mine got most votes The prize of the contest was outstanding – beside that I received the set for the review, finally I got whole new 42030 for my own! And this is the truck which “made it”: American 4-axle Dump Truck. The truck is fully motorized, it has 2XLs for propulsion, 1 Servo Motor for steering, 2 Medium motors for rising the tipper and hazard lights on top of the roof. The truck weights 2750g, dimensions are: 51,2 x 16,8 x 19,6 cm. It is Powered by two Battery Boxes placed on both sides of the truck. The access is very easy so you can change batteries quickly. In the front there is one pair of PF LEDs and second one is mounted in the rear of the truck. As I mentioned on the roof there are hazard lights. The blinking lights are made from 1x4 Light Brick connected to PF switch which is turned on and off by micromotor. (PF LEDs are connected to the same switch) Rising tipper is operated by two large linear actuators and truck can dump up to 2kg. Drivetrain – only two rear axles are driven – total gear reduction is 1 : 4.2. Enough power to carry and ride with even 7kg of load. Overall appearance you have to judge yourself. I was trying to do my best in two weeks but I think that it’s not bad at all Under the hood you can find V8 engine. And at the end - video. -
Is PF and RC an increasing trend?
Cumulonimbus posted a topic in LEGO Technic, Mindstorms, Model Team and Scale Modeling
Since I emerged from my dark ages, I noticed that there seems to be a trend of increasing use of Power Functions (PF) and Remote Controls (RC), in official sets and MOCs. Where adding a motor used to be optional, now there are more and more TLG models with integrated PF and RC. Even worse (in my eyes) is the fact that an official set can’t be a flagship model without any form of PF. When I see Technic MOCs in the various media, this phenomena is even more clearly visible. MOCs which get the most admiration from the community are packed full of motors, receivers, battery packs, lights, etc. The most common MOD of released sets is “RC-ing” the functions. New initiatives like the S-brick seem to confirm this trend. I observe this and I can’t understand what the fascination is, I have always had a preference for manual controls. This tend to lead to more fascinating mechanisms and make more compact models possible (just look at the amazing MINI-contest entries). In MOCs, it forces you to think about the user-friendliness of the controls and gives valuable feedback about the load on the drivetrain and the efficiency of a mechanism. I can understand adding one PF motor to avoid endless knob turning, although I found that adding a hand crank like on the 8288 Crawler crane improves this dramatically. But PF-ing all functions doesn’t necessarily makes it easier to control and takes away most of the feedback. With RC, I feel even more detached from the model and its functions. Additionally, I don’t like the noise the Lego motors make and I cringe every time a motor triggers the overload protection of a LA. When my 42030 and 8043 are switched off, the feel like dead weight and I notice a bigger threshold to take them from the shelve and play around with. All this has lead me to remove the PF and RC from a lot of my TLG sets to make the model manual: My 41999, 42025, 8070 have been de-PF-ed and became more interesting by it. In conclusion: in my opinion, PF and especially RC make a model slow, noisy, heavy, bulky and expensive. So my questions is simple: what is the fascination with motorizing a Technic model? Is it something younger generations want or demand, or is it a phenomenon driven by AFOLs? (PS: Don’t get me wrong, this is not a rant against PF and RC, I really can appreciate their value. But I do struggle to understand the fascination with motorizing everything.)- 39 replies
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[MOC] Trophy Truck
timslegos posted a topic in LEGO Technic, Mindstorms, Model Team and Scale Modeling
Hello again, Today I present to you my final MOC before I begin college. At the beginning of the summer I had some trouble with the custom battery in this model so I had moved on to the corvette. Unfortunately I did not finish the corvette in time, but I did resolve the battery issue in this truck. This small scale trophy truck was constructed off the guidelines given for the real life truck. These trucks are massive, with 39 inch tires, and suspension travels of 24-28 inches in the front and almost 30 inches in the rear. The wheelbase is about 125 inches long and 93 inches wide. The somewhat light and agile body is paired up with a 700+ horsepower motor, making for one very fast vehicle. My goals in this model were speed and long suspension travel. In order to overcome the battery pack limitations, I purchased one of z3_2drive's custom batteries and receivers. This rechargeable battery really packs a punch. Drive is powered by a buggy motor and the steering by the servo motor. Now time for some photos! In an attempt to make the model stick out even more, I used the very unique blue panels from the 41999 BOSS Crawler. Though it did pose some limitations in the bodywork, I think it looks really, really cool. I also really like how the back turned out. Though the real trucks often do not have lights in the back, they certainly help to dress it up. The spare tires and the grill hide the rechargeable battery. Here you can see the large suspension travel in the back. Trophy trucks usually have 4-link suspension in the rear, which is what I emulated here. Just like the real trucks the rear suspension is dampened. For my model, I used the old pneumatic cylinders with only one port at the bottom. You can also barely see the battery hang down from above. Here you can see the underbelly, I am starting to get the hang of building studless! And the video, one of my bests to date. And more pictures: http://www.brickshel...ry.cgi?f=546838 I hope you enjoyed looking at this model as I had making and driving it. As I am leaving for college tomorrow without my legos, there will be no more creations until winter break. I will continue to lurk though! Regads, Tim- 20 replies
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Hello I want to present you my new creation - Audi R18. The idea of creating a large and motorized racing prototype came a long time ago, after watching the race 24 hours of Le Mans in 2012. When I create this project, I faced with a lot of difficulties because of which I have several times postponed the project indefinitely. It was originally planned that the car will be manual transmission, but because of its asymmetric location relative to the center, there were difficulties with the construction of the chassis so I refused it. Similarities with the prototype very conditional, but the originals I took it Audi R18. Feautres: - 2 L-motor to the drive with gear 3:5 and 20:28 - Servo motor on the steering - IR receiver a new type, BB Original: My version: That's all. Thank you for your attention. Your Sicil. Sorry for my bad english.
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Flash Element for Power Functions Lights
runekokholm posted a topic in LEGO Technic, Mindstorms, Model Team and Scale Modeling
For some time I've been missing flashing PF lights. Yes, you can achieve flashing PF lights with motors, but there has to be a better way, also to allow more dynamic flashing options. A suggestion for this is shown below. It's also on Cuusoo - support and share if you like it. Flash element allows you to create flashing PF lights by setting the duration of the light/flash and delay (time between light/flash) plus an A and B version for more exciting flash combinations for your creations. Flash element must always be on top of connections to other elements to avoid interfering with their power supply (flash will only affect elements added to the top of the flash element). If you need more flash elements on the same battery box: simply add an extension wire and then the flash element. The unit will always flash, no matter the direction of the current. Old 9V bulbs would change state from flashing to fixed if current was reversed. PF flash element will always flash. -
hello, since a bit of time i decided to rebuilt some lego's, but i do not wanted to scrap my other rides;-) so i bought a 42029, because i think it is a fantastic truck to begin with:-) started from a stock 42029, i changed the length of the bed, put in a proper v8, rebuild front and rear fenders, put big 8110 wheels on it, make it rc. other things like a exhaust in the rear, the top ones still standing, it is powered by 2 l motors and the servo motor. next is the lenghtening of the cabin;-) here are some pics enjoy and comment;-)
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Blue Rock Crawler
Tamas Juhasz posted a topic in LEGO Technic, Mindstorms, Model Team and Scale Modeling
I present my latest crawler: http://www.brickshel...ry.cgi?f=545871 It's main concept is similar to my previous crawlers: nothing unnecessary part and weigth, as simple and reliable technik, as it can be. The chassis is enoug flexible to do this: http://www.brickshel...Crawler/021.jpg - so you don't need more advanced suspension in this concept. Two XL motor drive, one M motor steers the vehicle. For power supply there is one LiPo battery and a V2 receiver built in. The front part is heavier, thanks to the small wheels in the front rims and the ship weight. The chain holds the weight in position. This crawler also has the usual rock crusher tires, in my case, from RC4WD. The body is partly from the 8437 official model: http://www.bricklink...em.asp?S=8437-1 http://www.brickshel...Crawler/001.jpg I lookde around my room in the beggining of body building time, and the 8437's body in my showcase just gave himself to connect with the chassis. I wanted to make a tubular body/frame. Has a fake L6 motor in the back too: As video, there is the first part (from 00:40 to 20:55) of this video: (720p) This was an RC track test, for more information see this topic: http://www.eurobrick...showtopic=97879 I made it in LDD, this is the instruction: http://www.brickshel...crawler-no4.lxf Feel free to ask or comment.- 9 replies
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EDIT: Instructions are now available on Rebrickable: https://rebrickable.com/mocs/MOC-102718/NonsenseWars/148-pennsylvania-railroad-t1-duplex-v3-power-functions You can see some new footage and an updated explanation in the following videos. Also cleaned up dead links from the original post.
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House Power Functions GALLERY Technical:: -Dimensions: Length: 80s Width: 56s -Gate + Garage 1x M motor 1x XL motor 1x IR Receiver 1x Battery Box Main Street Grill Car The rest of the pictures Movie: I invite you to comment :)
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Hey Guys I am wondering if anyone knows a good shop (Online) that sells lego trains (Mostly 9v and PF) for a good price other than Bricklink and a Lucky eBay find? Thanks so much -RailCo
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Sisu SA-150 aka "Masi"
Zantza posted a topic in LEGO Technic, Mindstorms, Model Team and Scale Modeling
Hello people of EB, this is my first post here. So, this is an army truck used by the Finnish military. The building process took about a month for me. The drive motor is of course an XL-motor, which is hooked up to Sariel's 2-speed trial truck gearbox. I'm sure you can find it on his site. Shifting gears works with remote control, and so do drive and steering of course. Inside the gearbox are the gears 12/20 and 16/16. One XL-motor has plenty of torque to drive this thing, especially with the V2-receiver. Both axles have 3-link live axle suspension. Front axle has hard yellow shocks, and rear axle has soft red shocks, for obvious reasons. The real truck has leaf springs, but as you all know they are rather silly to do with Lego. The steering M-motor is sitting on top of the front axle and is geared 8/40. The doors can be opened and the 5-cylinder engine in the cabin is attached to the XL-motor. The real Sisu has a 6-cylinder engine, but I couldn't fit that. At the rear of the truck you can find a spare tire, which is a lot smaller than the other tires due to lack space and saving weight. Sorry for the bad pictures :/- 9 replies
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When building trucks (pickups, trial trucks, etc.) that have motorized winches, do you use a dedicated motor for the winch, or use a distribution transmission from the main drive motors? A dedicated motor would be simpler, but then you'd need a separate channel for it and the motor would be dead weight when you weren't using the winch. Using the drive motors would allow re-use of the (presumably powerful) drive motors, and with a differential you could have the motors drive the vehicle forward as they also pulled the winch in - which seems useful when using the winch to self-extract the truck. On the other hand, a distribution transmission would add additional complexity. Specifically, I was thinking of (at some point) building a part-time 4x4 pickup with a winch on the front, which would have the following modes of operation: FWD high 4x4 low winch retraction (with the drive wheels in forward or neutral, for self-extraction; or the wheels locked by a brake, in order to use the winch to pull another vehicle) winch extension (by hand, using a ratchet or something similar to avoid having to back-drive the winch motor) I would probably use 2 XL motors and would lean towards using a distribution transmission for the winch. What do you think?
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Linear Actuator Gearbox
anton1678 posted a topic in LEGO Technic, Mindstorms, Model Team and Scale Modeling
I was looking at TheItalianBrick's post about the modular gearbox, and I tried to make it. This is too big for that topic, so I made this my own topic. I failed, so I tried my own way. It uses a linear actuator to make a really thin, long gearbox, though I could make it normal with just one tiny gear. It allows smooth movement back and forth, for each of the 4 functions. I wouldn't recommend this in a short vehicle, because it widens and shortens, best used in like a crane or something. It uses 1 motor for drive, 1 for change, and has 4 functions. You could use just one of these gearboxes to power 2 more, and those to power 4 more, then 8 more, then etc. You'd need a lot of torque, but it could work, eventually to 64, 128, 256 even, functions for just 2 motors, if you have enough bricks. I could build about 2 more, so 8 functions for me. -
PF remote using smartphones
zweihander posted a topic in LEGO Technic, Mindstorms, Model Team and Scale Modeling
Hey everyone, First, I considered using my raspberry pi to create a DIY customizable PF remote. Then I read somewhere that someone had done it, and sometimes it failed because of raspberry pi not being real time and missing some IR emitting intervals. Then I found this article. It explains how to record IR signals as audio stream using 2 IR LED's and a headphone jack, and replay them. I want to give it a try, and if it succeeds, develop an app for smartphones that can be used with a DIY emitter and used as a customizable PF remote. Has anyone tried this before? What do you think? -
Lego 42000 full PF MOD
changxw.vip posted a topic in LEGO Technic, Mindstorms, Model Team and Scale Modeling
Hi all, here I would like to share my full PF MOD of 42000. since I don't like put the battery box on the back like the official design. I replease the engien with the 'green' electric power. ^-^. I use 2 L motor for power, 1 servo motor for steering, 2 M motor for 2 actions. please see the movie, some pictures and LDD draft file. Here is the LDD file Video: http://v.youku.com/v_show/id_XNTY4MjEwNDc2.html http://player.youku.com/player.php/sid/XNTY4MjEwNDc2/v.swf Some pictrues: Thanks. -
Hi When I had been building (in March, I think) other things, that are going to appear soon, I have recognized, that I have parts to make a great chassis for simple buggy-ish vehicle. However, then I have seen some musclecars here in Technic forum, so I decieded to build one too. This one is the final product of that build - it is not prepared, I've been building it instantly according to my thoughts. Hope you like it. ;) it is propulsed by one 5292, and for steering it has one servo. It's steering wheel doesn't move, it is just decoration, and at "RC car" it was "redundable mass"... Video: More photos: https://www.flickr.c...57644613626038/ musclecar by Horcik designs, on Flickr musclecar by Horcik designs, on Flickr musclecar by Horcik designs, on Flickr musclecar chassis by Horcik designs, on Flickr
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Hello I'm combined trial truck and crane and I'm make Off road crane. Truck have 2Xl motors for drive each for one axle. Crane is pneumatic and work with hand pump.