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Didumos69

Eurobricks Dukes
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Everything posted by Didumos69

  1. Didumos69
    It would make a nice poster on the ceiling above a dentist chair...
  2. Didumos69
    Cool! This is the primitive part to generate it. I certainly think it's more elegant than my find. Btw, this gives me an idea for a non-existent part I would really like to have , if you get my point:
  3. Didumos69
    EDIT: I just renamed this thread as it evolves into a wave of primitives and patterns that all take part of something I would like to refer to as The LEGO Molecular System, with LEGO parts being the 'elements', the primitive compounds being the 'molecules' and the generated (potentially) infinite patterns being 'matter'. Of course these LEGO molecules may represent real molecular counterparts, but they don't need to. It's The LEGO Molecular System ! I've been intrigued by infinite patterns for whole my life and was looking for the smallest Technic primitive to create an infinite recurring pattern that is the same in all 3 dimensions. This is the smallest I could come up with: It generates this pattern: What is the smallest primitive that can generate an infinite recurring pattern that is the same in all 3 dimensions? LXF-file here.
  4. Didumos69
    What I meant was that we need a way to express how the primitive elements are ligned up in an individual part. But the matrix you mentioned a few posts back does exactly that.
  5. Didumos69
    You are talking about the connection primitives, where as the OP is about the primitives from which parts are build. Either way, I don't think we can reduce Technic - not even the individual parts - to such a small set of primitives. One of the primitives I'm missing for instance is how the 4 primitives mentioned in the OP relate to eachother in a single part. For a 5L beam the relation of the individual holes is simple, but for a it's much harder to describe. We would need primitives for these relations too.
  6. Didumos69
    I agree this part can be very useful in some use cases, but to me this part is even more controversial than the pinhole with pin. When I want to build a rigid main structure - say a chassis - I usually build in 1-stud layers: Odd layers are for length-wise beams and even layers for width-wise beams, or the other way around. This allows for beams to run through the entire structure, length-wise as well as width-wise, which adds to cohesion. If I find myself in need of this particular part, I regard that as a 'bad smell' and a reason to redesign my main structure. Only after establishing a rigid and cohesive whole, I can imagine using this part, just to realize a secondary structure. But until now I never used it. I don't even have one.
  7. Didumos69
    I feel the same way. This is probably also why the pinhole with pin feels like cheating, even though I use it a lot. It seems to make things 'too easy'.
  8. Didumos69
    Return-to-center iteration 3 In my last post about the return-to-center mechanism for the shift lever I showed a symmetric implementation. However, after some playing around with it, I still wasn't satisfied. The main issue that I found, was that the rear pusher bumps into the 3x5 L-beam just behind it, a little too early. The actual shift is only just about to be completed at that point. So I gave this a third iteration which resulted in a setup that I'm completely happy with. For the rear pusher I reverted to the half bush instead of the part and also re-established the beam at the end of the 5.5L axle with end-stop, which slightly lengthens that axle. Instead of using the 1L beam, I now use a 2L beam that hangs on to the drive axle running to the front axles, so it can't go anywhere. This setup brings the rear pusher 1/5th of a stud more forward and allows for a perfectly complete shift. Btw, this video has not been edited . Some people may think of me as a perfectionist. It is true that I have been in pursuit of a symmetric approach to the return to center setup, but now that I completely understand why it behaves as it does, I can perfectly live with a non-symmetric setup. I see myself more as someone with an irrepressible urge to understand why things behave the way they do .
  9. Didumos69
    Thanks! The intention is to make the instructions available for free. @BusterHaus is working on it. This will take some time though and the fact that I'm still changing small things won't help .
  10. Didumos69
    This is also one of my favorites. It's the smallest part that can connect pins in all three dimensions. To me, all parts that are able to connect pins and axles in more than one dimension are interesting.
  11. Didumos69
    Definitely
  12. Didumos69
    Something like this is indeed what I mean, but it would be nice if you could directly link to a hosted design file, for instance an LDraw file. I do understand that this is not as easy as it may seem, as the viewer will have to load all parts referred to by such a file, but if Bricklink can do it, it should be possible here too.
  13. Didumos69
    I did not mean to reuse the Bricklink viewer. Eurobricks could have a similar viewer that can be fed with a link to a digital design file hosted on Bricksafe or likewise.
  14. Didumos69
    Good point. I would say it should work just like the viewer on bricklink. Show a 2D image and a button to switch to 3D. Only after pressing that button the bricks are loaded. I tried the bricklink viewer with my rugged supercar (2750 parts) and that took about 5 seconds to load.
  15. Didumos69
    I don't know if this is the right thread for this (yes, I'm one of those guys that doesn't look beyond the Technic forum), but I really think it would add value to Eurobricks if we could embed 3D views on our digital design files stored in for instance Bricksafe. Just like this. What do others think?
  16. Didumos69
    Cool! Btw, here are LDraw a Stud.io versions of the digital file with the dashboard in place (not with your latest changes to the real life build though). And two POV-Ray renders:
  17. Didumos69
    You're right, sorry about that. At least we now know there is a racing treat for both sizes.
  18. Didumos69
    On the outside. That was how I intended this.
  19. Didumos69
    What he said. This is the best way to secure this type of wheels to an axle that I found so far. Mild beatings that will normally loosen the 1/2 bushes over time are completely absorbed. Only severe stressing will cause the squeezed rubber connector to slide:
  20. Didumos69
    I agree you have to do the assignment yourself, we can only give some pointers. I suggest you make the left and right bogies communicate with gears such that the body inbetween the bogies averages the position of the bogies. In other words: The body behaves as a differential with the bogies secured to the output axles. Just as is common to rocker-bogie suspension: See also this post for inspiration:
  21. Didumos69
    These are too big. He uses the smaller motorcycle wheels. This one fits and has a racing tread:
  22. Didumos69
    Here is the updated LXF-file. And here is an LXF-file of the drive train and shift train without axles. Note that the silicon bands for the 90 degree limiter need to be cross-wrapped around the yellow half bushes (making an 8-shape) and the silicon bands for the return-to-center pushers need to be double-wrapped around the bushes and the parts.
  23. Didumos69
    Nice progress! I also like the modular setup. Would be nice if you could somehow extend the mid-console (the H-frame around the gearbox handle) to the rear suspension, just to make the chassis more sturdy.
  24. Didumos69
    Maybe you could use thispart as a spacer between the wheel and the hub. It is very smooth and could sit right against the hub without causing too much friction, I think. Or this belt wheel:, which could be attached to the wheel with pins..Using the surface of the outer circle of the hub would help reducing slack.
  25. Didumos69
    . This model deserves to be finished. Take your time, we won't go anywhere
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