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About teflon

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    Learned the hard way

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  1. teflon

    Motorised Transformer Monster Truck

    What a clever way to use slip gears - to basically program colapsing sequence!! The color scheme is also very nice. I do also admire the simplicity that just works. And the posture of the robot is also very funny. I think you should get a star for an idea of the week!
  2. Hi guys. Thanks for the support. The roller coaster is in the way of transforming into bricks once again, since I could not repair the thing. Perhaps I was not clear regarding my faults - I started building this with a lot of improvisation in mind and not enough bricks. As MajklSpajkl realized, we had a working track but without lift. Unfortunately I left the project stay on my shelf for to long and then pins started to crack. Perhaps you are not aware but Lego plastic, especially the technic sort is very prone to cracking while under stress (Pins in a curved track for sure qualify for these). At the time I was hoping that I just replaced some faulty pins and away we go. I was wrong. The rate of pins (and later other parts breaking was accelerating fast). Among 2 and 3-length pins the culprits are also Axle and Pin Connector Perpendicular (https://www.bricklink.com/v2/catalog/catalogitem.page?P=6536#T=S&O={"iconly":0}), with high tendency to break when near another technic part. I was fighting breaking deamons but I just figured out it's a race to the bottom. Even if I could do something useful, I could not present it on any shows due to sensibility. That's why understand why Lego used another solution - yet another track. If you would like my advice - build something like this quickly, before pins realize that they are under pressure;-)
  3. From my young age I wanted to built some contraption that would allow me to run down cars, marbles etc. Along the way I get familiar with Lego 7 mm ribbed hoses, however they slow down the cart quite a lot and were not useful for the purpose. Then a few years later I've seen Zerobricks with his idea for the track (https://www.youtube.com/watch?v=SydmBuTPnKo). A few years later guys from Brickride (http://www.brickride.com/) created their fully functional Roller Coaster so I gave it a try. I started about two year ago and in a couple of months I had some ideas: https://www.bricksafe.com/files/teflon/roller-coaster/Roller Coaster 01.mp4 ... and the majority of track ready to go: The idea was to have a gigantic tower on one side so track would go up on one side, then do slow 180°turn an fall into the abyss with complete loop at the bottom. However the tower was not very stable so I had to change to an A configuration The new tower was about 170 cm high and reasonable stable. After some testing I had a fully functional track with one looping, a 270° + 180° horizontal turns and even track going tough the opening of the looping (sorry for lousy picture, I have no other:-/) Then I started with motorized lift. I used Brickride's idea - chain in a ditch: The propulsion at the curve at the bottom was served with side wheels with synchronized drive (matching the curve of the track with the curve of the drive was a hard task): Here is the detail, where side wheels are pushing the cart to the chain: Ant the top part also needed some clever chain tricks: At least two L motors were needed to power the thing due to its size and some friction. However, all this effort just produced very good lift but managed to mess-up my track. Like Heisenberg principle - either track was working or the lift but not both at the same time. At the time a lot of my pins started to brake and replacing them cause almost a chain reaction, since some force is needed to dismantle the track. Due to that, I even shorten the track to have as little problem with pins as possible. After months of more or less serious attacks on the issue, I realized it's just to big to work properly (with a motor). I guess my support is just not up to the task and I just have to admire Brickride's. In the mean time, we have seen the Lego answer and it's nice enough. Some more pictures of my failed project: Looping: Through the support: And panoramic view: Please note massive girder to support the track. That was my last idea out of desperation to make this track stabilized. I have failed miserably. Well, the lessons learned: Bricks are stubborn, technic ones even more so. More engineering is usually not a solution Building with bricks is not all fun and games There is no such thing as too much pins More pictures here: https://www.bricksafe.com/pages/teflon/roller-coaster
  4. Wow, it flew by me how many LUTs have been build and they are all splendid. But I agree, Saturn V is one of more inspiring sets, at least for me. And having seen minifig Saturn V ... mind-blowing. @Ludo Visser There are three clamps. They got releaset just at liftoff, but the mechanics is unknown to me. However they could be observed on many launch films. Mine are designed after the design of Lego Ideas'. Sorry, but in reality they are quite weird shape and was one of those things I was planning to deal latter. Here is the picture: Quite hard to build in 2 x 2 x 5 stood space.
  5. Thanks everyone for kind words. Part count is unknown, perhaps between 5-10 000 parts. A lot of those are not visible (internal in the pad). Unfortunately there will be no instructions. I am to clumsy for that (and some connections are illegal for sure), however If more pictures are desired, I'll do my best.
  6. I'ts been a while since I finished this model, probably some months after getting my hands on original Saturn V. The latter seemed lonely on the shelf and it was my mission to build it a company. As an engineer I always admired these large structures but always been too lazy to do something in that direction. After seen the proposal at Lego Ideas for Umbilical Tower, I started to gather ideas, pictures and most important the - bricks. Since 20th of July marks 50 anniversary, it seemed like a good idea to present this project. Therefore I took model from the shelf, dusted of some dust and took some new pictures. The last time I didn't get the time since I was running late for our BrickFest. 1. Planing and Building As any good creations, this started as a plan, something like this: The next step was scaling. I am sorry Sariel, but I am more familiar with pen and paper than your great tool (the top should be at aprox. 140 studs). The internals of the Launch pad was made out studded technic bricks which are quite suitable for carrying a lot of load. These proved vital in the later stage when Pad is occupied with the tower and Saturn V. The outside was tiled with tiles and the building of the tower could go on. The most critical component was how to attach the tower to 4 points, while allowing beams to be at angle in both direction (from the plans and pictures it could be seen, that tower is getting narrower and thinner at the same time). A person is added at the corner to get a feeling of a scale of the tower. The solution is presented here, an angle connector at 157.5°: 2.The Big Thing The result is here: I've tried my best to show the whole thing but my dining area seems too small. It looks more beautiful with Saturn V: And picture from behind: On the top there are some knobs to conrol the support rods, the position of the white room and the top support above the capsule. Please note that crane is also fully operational. Another picture of the top with crane in lift-off position. The central column (gray) has room for an elevator, however it was not added since it would be very difficult to observe White room and the Apollo 11. I hope the astronaut on the plank is not late. And bottom up view. 3. Details Mobile transporter is simplified to the bone: just some necessary things. And of course it should be capable of having a tone of bricks on its shoulders: A functional crane is simple but I hope it adds to the character of the tower Pad is almost clear with exception of some service buildings Some more files can be found at my Bricksafe page. I hope you like it. It's always an conversation starter at home. Please feel free to comment or ask a question.
  7. Interesting find. I would just like to point out to a almost 10 years old review of what seems like a knowledgeable person: Amazon review
  8. teflon

    1970 Porsche 917K

    This is one very elegant car. I think even Steve McQueen would, after seeing this model, pick up bricks and started to have fun with them. The original car is an icon, it was used - besides the movie - in all sorts of commercials and merchandising. It seems quite simple with simple lines but that is quite hard to get it right in bricks. I think you quite nailed it. The front is specially tricky since it's voluptuous. And you get straight A for presentation. Bravo!
  9. I agree with you. 42076 looks quite ineteresting to me. But ... buying small (an marvellous) sets is not the way to solve a middle-age crisis. The prices of more expensive Lego sets are close enough to the prices of used sports cars and from my experience you get quite more attention with (even old) sports car. Not that I own one.
  10. My 2 cents: I've been slowly drifting away from Lego and Technic. I haven't bought a set for a year or so and I have unfinished creations on my desk with slim chance of actually finishing them. I am not totally out, since I am still very much active with FLL. Nevertheless I've witnessed Technic sets to become quite large and even more expensive. But I think this is our fault. I remember the polls that shows that we (technic nerds) were dying for large USC-kind of sets and willing to pay. And Lego delivered. I therefore think that Technic theme is stronger than ever. Of course some romanticism is gone - a lot of people is now selling their plans, but some people still offer their ideas for free. I just hope all of this will continue in the future.
  11. I do admire the simplicity and efectiveness - at least on video it seems quite stable and it does not fall apart easily. Excellent work!
  12. What an inovative (for Lego) contraption. It's excellent blend of form and function. And it works, too. Amazing!
  13. teflon

    Indominus Rex (Jurassic World)

    Those poor rabbits. But you have to feed him with something, therefore I understand. I also like the color of teeth. It seems our Rex has been smoking quite a bit. Even has some rotten ones at the back. I like the attention to funny details. Good work!
  14. Oh dear, this brings back memories. Thanks for this very detailed guide. I really appreciate this since rcx was my first robotic kit. I remember using original Lego software with Windows 2000 (not ME) and XP. I remember that installation was a drag. Have you perhaps tried to install it? I liked the IR port of RCX as it enables one to control Power Functions with it (a chap named Bob Kojima made some sort of demo program a while ago). However my knowledge of programing is so low, that I couldn't do anything serious with this.
  15. teflon

    Nico71's Creations

    This is very interesting. Do you think it would be possible to convert this bunch of photos into 3D model using Autodesk' 123D Catch. I have experiences only with non-see through objects. But X-ray pictures might confuse the program. Does anybody knows about freeware program that can made 3D models out of X-ray pics?