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Horologist

Eurobricks Vassals
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Everything posted by Horologist

  1. Horologist
    Something like this? You could feed one of those mechanisms into a standard ball pump for both a low input and the advantages of a ball pump.
  2. Horologist
    Great model, love the passive gripper and brick-feeding systems!
  3. Horologist
    Interesting concept, but wouldn't the reduction be greater if the carrier was static and the 28t gear was the output? (12/24)*(8/28) is 1/7.
  4. Horologist
    Great model, it fixed most of the flaws of the previous one. It also looks a lot cooler . I can't shake the feeling that there's a simpler way to do it with a differential, though... perhaps something like this would work? I don't have the parts to build it irl, but the concept seems to be there.
  5. Horologist
    Very interesting. Reminds me of the recent experiments by Yoshihito Isogawa (i.e. https://www.youtube.com/watch?v=ZIRd7-Vgos0)
  6. Horologist
    It has a 3D model on Mecabricks, if that would help: https://mecabricks.com/models/Lkj9J03kvAp
  7. Horologist
    This is a working model of a steam engine that runs on air. The input port is on the top and the exhaust ports are on either side. Airflow inside the engine when the piston is expanding (rendered using mecabricks)... ... and when it's retracting. The piston and valve are about 135 degrees out of phase on the crankshaft (90 would be better). Although it is by no means airtight, with high enough flow rates the leaks become negligible.
  8. Horologist
    Great model! I assume the front wheel is freely hinged with a positive castor angle to get that amount of stability.
  9. Horologist
    Perhaps you could use something different to write with. It looks like your pencil is hexagonal, a round pencil might work better. You could also use a felt-tip pen or fine marker instead of a pencil to reduce the friction against the paper.
  10. Horologist
    Great boat! Love the classic powerboat tilt. How much do the custom props help with the speed?
  11. Horologist
    Interesting idea and good implementation. It looks like the motor stalls every time it changes gears. Could that be avoided with a clutch gear?
  12. Horologist
    Great module! Those slide pieces are perfect for an Archimedes screw.
  13. Horologist
    Great idea, I have one question: If only the bevels are meshing, then wouldn't the 12T gears feel a force pushing them apart along their axles when rotating?
  14. Horologist
    Really interesting walking mechanism! I've never seen anything like it before.
  15. Horologist
    When I made a snowmobile, I found it helped to add small fins (i.e. 30413) to the bottom of the skis to improve steering authority. I also added camber, like on a real snowmobile, but I'm not sure how much of an effect it had on the steering.
  16. Horologist
    Another interesting way to get a hollow wheel... I remember seeing this solution with motorcycle tires a while ago:
  17. Horologist
    Good design, It seems to work really well for its purpose. What's the gear ratio between the two hands?
  18. Horologist
    Amazing build, I love complex suspensions like this one. How much backlash is in the differential mechanism inside the body?
  19. Horologist
    Very interesting model. How much can it lift from its resting state (platform at lowest)? It looks like there are springs to help with lifting, but the mechanical advantage would be poor at that point.
  20. Horologist
    Yeah, in that case you'd probably be best off running the module slightly fast of one ball per second and tune the counterweight so that even if the weight of the balls varies, there will always be enough weight to trigger the lift. Sometimes it might lift when it's not full, but if it runs fast it wouldn't fall behind one ball per second.
  21. Horologist
    You could probably adjust the counterweight of the blue weight-sensing arm to change what weight the lifting is triggered at and allow for balls of different weights.
  22. Horologist
    I love how simple the feeding mechanism is, I would never have thought to use knob wheels like that.
  23. Horologist
    I love your work on automatic gearboxes. I usually just use a stepless automatic transmission like the one detailed here.
  24. Horologist
    The pitch of Lego gear teeth is about 3.2 mm (there are 10 teeth on the 4l gear rack). The L-motor might slow down during shifting too because of the force required to stretch the rubber bands.
  25. Horologist
    Are you sure those are genuine LEGO? Your pieces look like a clone brand from the colors and mold spots.
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