Comments by "geemy" (@geemy9675) on "World's Highest Jumping Robot" video.

  1.  @onatarslan3515  it would be useful it it both reduced battery drain AND reduced "preload time" for the next jump. landing on the feet and storing the energy would also make for a much "softer" landing with less damage to the jumping robot and less impact on the ground to. on a soft ground (not ideal for jumping, but for instance moon has a lot of dirt on its surface) the pointy end of the robot could get stuck. but I don't see an easy way. you would need to land perfectly, so different aero and weight distribution and have another motor (or a different gearing) very quickly spool the slack in the cable, and lock the cable as soon as the spring reaches its max compression and starts extending again... maybe the very quick spooling of the cable could be done by a secondary spring that could be preloaded too? or even better...reload a spring while it's jumping and trigger it as soon as landing has recovered as much energy as possible, and chain the jumps 🤪 like a 🦘
    1
  2. the best jumper in the animal kingdom is the... flea: Am I a joke to you? meanwhile I use to have an indoor cat, not particularly athletic/young/energetic that would usually never jump higher than 3 ft but would sometimes suddenly jump to the 8'2 ceiling trying to catch flies/spiders... never forgot the first time I saw her do that
    1
  3. you didn't watch the video till the end right? 110ft is already crazy high, but a 10x bigger, 1000x heavier version, way taller than a human, although much more complicated to make would only (theoretically) jump 15-20% higher thanks to less air resistance/mass. even if they can hypothetically make it and not break at every landing,if you expected it to jump ~10x higher, no luck, for that it would need to have initial speed x sqrt(10) and total energy x10000 or 10x more energy/mass which is limited by the spring material energy/mass. lighter motor /battery could only allow 20% higher jump, and scaling the robot only 25% so hard limit if you optimized every paramater is maybe somewhere ~170ft from there, any incremental improvement would face difficulties to increase the size and air resistance limiting the gains whatever the size and whatever the motor/battery weight until we find materials that can store much more energy than carbon fiber/rubber. Although a completely different problem, it's a bit like wheel driven streamliners even packing 5000hp, super efficient aero, kinda hit a wall around 500mph because they can't send more power to the ground without losing too much speed because of the drag you'd need different tire compound , or to run it on a track instead of salt flats. by the way, the moon/mars version could have a different design because air resistance wouldn't count
    1