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About Davidz90

  • Birthday 01/09/1990

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    <p> Technic </p>

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  1. This is super cool! Now I want to get those sails :D I'm also curious how this works out. How about replacing some axles with hoses (the thin, rigid ones)? Might save some weight.
  2. Davidz90

    Lego Dishwasher

    Now that is something unusual. Cool!
  3. Davidz90

    [WIP] Blade Runner Spinner

    For more German insanity, I can recommend this page: http://www.luft46.com/
  4. Davidz90

    Technic Walker

    Very interesting linkage, a bit like Theo Jansen's, but not quite. Very smooth and fast! (and yes, a bit creepy :D) Nice job!
  5. Davidz90

    [WIP] Blade Runner Spinner

    The engine looks great! If You want a twin engine with radial and twin boom configuration like P38, there is P-61 Black widow. For single engined fighters, I'm a big fan of Polikarpov I-16. That thing is cute
  6. Fantastic build and brilliant engineering! I'm also curious if the mechanism is inspired by some other mechanical solvers or original. Either way, fantastic
  7. Davidz90

    Compact heavy ratchet joint techniques?

    The legs are very narrow (seems like 2 studs to me), but somewhat wide in the other direction. There might be enough leverage for linear actuator to do the job.
  8. Davidz90

    Quadruped kinematic workbench

    I mean something like this: https://www.youtube.com/watch?v=GUsOouwjsL4 One leg is moving at a time. The tree legs form a stable base, and the centre of gravity (Cg) is moving to keep within this base. I've made schematics: walk by David_Z1, on Flickr Blue circle is the moving leg. Triangle is the current base. Note that Cg could simply move in a circle, either by rotating counterweight or by leaning whole quadruped on the standing legs.
  9. Davidz90

    Quadruped kinematic workbench

    That's a great idea! I'm a big fan of walking Lego contraptions and actually used Algodoo in the past, but this is much more convenient. I always wondered if one could make a quadruped with walking pattern similar to star wars AT-AT e.g. moving only a single leg at a time, while standing on the remaining three. Potentially, that would be more stable than usual solutions.
  10. Davidz90

    Cards sorter

    Wow, that's some seriously impressive image recognition algorithm!
  11. Davidz90

    Portable Nintendo Arcade Cabinet

    Very interesting idea! Maybe a stupid question, but with all that stuff packed closely together, isn't heat an issue?
  12. Davidz90

    My mechanical clocks

    A final version of my Arnfield clock, and my first wall-hanging design. And here are building instructions for escapement:
  13. Davidz90

    [MOC] Mechanical Game of Life

    Incredible . Very interesting idea and great execution!
  14. Davidz90

    How much weight does a liftarm hold?

    I think it should work ok as long as the zeppelin is more or less hanging on them. In pure tension or compression, even a single liftarm can withstand 3+ kg. I had a gravity powered clock where the 2.5 kg weight was hanging on two liftarms. There was no damage after a week.
  15. Davidz90

    My mechanical clocks

    Thanks! Figuring out gear ratios took me more time than actually building the thing :D Lining up u-joints is definitely a good idea. Another thing I'd like to improve is to use a large turntable for frame rotation - that would be much less wobbly. Sure, I have few photos on Flickr: Orrery_5 by David_Z1, on Flickr Orrery_1 by David_Z1, on Flickr Orrery_2 by David_Z1, on Flickr Orrery_3 by David_Z1, on Flickr Orrery_4 by David_Z1, on Flickr