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Aris

Eurobricks Vassals
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Everything posted by Aris

  1. Aris
    Mate this is incredible! Very compact and clever design!
  2. Aris
    I like this design. Is it compatible with a L motor for easier mounting on structures? Very compact design!
  3. Aris
    Excellent work. Nice gripper!
  4. Aris
    Nice work mate! How is the down pneumatic movement of the crane? Is it smooth?
  5. Aris
    Yep there is one. Add counterweight!
  6. Aris
    Hi all, In 2016 I did some interesting experiments with large pneumatic cylinders and LA, considering 2 very important factors : distance and torque. However, not in a straight distance, but multiple directions. As for pneumatics, air flow depends on the pump used (large or mini) and the use of air tank as well. All pneumatic functions had 1-2 large cylinders and their air switch. Pneumatic cases : a) 1 manually operated or motorized switch, 1 meter away from air compressor. b) a system with 10 manually operated or motorized switches, 1 meter away from the same air compressor. c) 10 manually operated or motorized switches, 1 meter away from 10 different air compressors (1 for each air switch). LA case : a) 1 motorized LA, 1 meter away from the pf motor, including a structure with diagonal paths and gearing. So if you are interested in this survey, you may mention your personal experiences if there are any. The question that arises here, is which case is delivering the highest torque and which the lowest. I would very much like to see your opinions.
  7. Aris
    Excellent survey. Thank you for mentioning these.
  8. Aris
    Of course you don't have a precise control with pneumatics. But in case you create a specific structure near the cylinders (for example with rubbers) you can fix their precision a lot. It's about creativity. For me, the air precision is not solved by air switch, even if it's manually operated or motorized .
  9. Aris
    Totally agree about pneumatics. I prefer them. I very much like your philosophy. Reminds me old times.
  10. Aris
    Yes indeed! Maybe just because linear actuators need less space than a custom one.
  11. Aris
    Yes of course. I am sure that huge lego technic sets will be motorized, so definitely should be more complicated sometimes and have pneumatics. At least there should be an electric compressor in some sets. I suppose that we may see a set with motorized valve in the future, if I compare current set prices with old ones. PF unfortunately belong to the past now.
  12. Aris
    Great extension! Seems stable enough, didn't try it yet. I am sure that is not the problem of the cylinder . As far as I remember, in 90's, the pneumatic hoses where much soft and thin than e.g. in 2015 and couldn't withstand the high pressure of more than 2-3 bars. Could be easily mounted to the cylinders contrary to the new hoses which demand more power to be fully mounted so as not to pop out.
  13. Aris
    Has the same problem with 4-5 large cylinders with square bottom. I guess that it's due to the face that they have been used quite a lot in the past.
  14. Aris
    Great idea. What about raising the arm with the rubbers? Was the movement smooth? Indeed. I guess that V2 refers to the their almost double length mostly, rathen than cylinder's bottom.
  15. Aris
    Totally agree with that. Great idea. But what if you want to return fast to the up direction, by using a slow air switch-actuator limit mechanism. I guess that this one works for the down direction like you correctly said. Expect for using mindstorm servo motors with suitable gearing, you may control up direction too.
  16. Aris
    Hi all! Any news about a Lego rechargeable control+ battery box ? I guess we need that.
  17. Aris
    Impressive! I was planning to build a similar one long time ago and I see it now in action! I prefer wheels because have better grip with ground and keep the robot stable. Usually I don't use treads.
  18. Aris
    Excellent work and compact design. So much detail in a great little creation. Pneumatics do incredible things.
  19. Aris
    This one demands great effort, especially to program the whole thing! Impressive!
  20. Aris
    Nice work. I am fan of pneumatic grippers and industrial style robotic arms. Interesting use of sensors.
  21. Aris
    Creative and impressive! Nice idea. Seems complicated.
  22. Aris
    Is so extraordinary that i didn't notice the steering . Excellent work.
  23. Aris
    Nice and different. As I can see the treads are RC and the rest is manually operated.
  24. Aris
    Nice topic. I like this kind of mechanism very much. But Lego still needs to create a better valve for more air precision.
  25. Aris
    Sorry guys. If u mean model ''Nemesis'', there is no RC part. Everything is cotrolled by hand. Thanks!
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