Joostv

A wind powered clock would be awesome, hope you will post that here as well. And thanks 😊

This build is absolutely awesome and I love it 😊. An application of the different expansion coefficient that comes to mind is a Gerrit van Bakel style walking machine. That artist has made a couple of moving sculptures that move (extremely slowly, like millimeters per day) based on changes in humidity or temperature. https://www.gerritvanbakel.org/

Thanks 😊

Love the style and concept! Looking forward to the next episode 😊

@Timewhatistime I have added a low-res / minimum size version that is under 5MB at the cost of visible compression in the instructions. Please, let me know if this works.

Thanks! A quicker / easier way to wind up, like pulling a thread as you suggested, would be great. The problem with adding it to the dino itself would be that it adds weight and impacts the balance. Adding a spool to the wind up tool should be feasible, but it would require an additional solution to wind up that spool. Which could be something simple, like rolling it over the floor. That would be worth a try I think. Another solution would be something electric, like a Lego version of @2GodBDGlory's drill solution. Hi @Timewhatistime, I didn't know about this size restriction. I will try and see if some compression can be achieved at the cost of resolution and will upload it as a seperate version. This way you should be able to select the smaller version. Thanks! and thanks for sharing that solution! I will be exhibiting (for the first time) next month and will definitely bring along my cordless drill 😉

Thanks, glad you enjoy it 😊 Thanks! Have fun 😊 check the first pages of the instructions for alternative parts of you don't have DIGatron. Thanks 😊 I watched road runner a lot as a kid 😊

Thank you both! 😊

Thanks for the positive feedback all 😊

Thanks 😊 😂 Thanks! Thanks! I learned to announce tests of this one. First succesfull test run in the living room caused a little scream.. Bit too life-like 😉 Thanks 😊

Thanks 😊 Thanks 😊 I was pleasantly surprised by the performance of the pull-back motor in this application.

This is a little experiment with a pull-back motor. The idea was to do something other than wheels, so I tried legs 😊. I got this to work quite reasonably as you can see in the video. The idea was to have a linkage for the feet that is linear on the front to back movement, but moves in an arc on the back to front movement so the feet can overlap. The overlap is in the center. I have made instructions (free ofcourse) which are here: https://rebrickable.com/mocs/MOC-252160/MejoliDesign/md007-running-dino-experiment You can just scroll through the PDF and see the dino from various angles. This will give you a better idea of how it was built. I managed to include a moving tail, which really helps balancing the dino. With the tail the run was much more stable than without it. I have made attempts to make it a bit prettier, but basically any additions downgrade performance or upset the balance. The sprint is short: 1 tot 1.5 meters. If the power runs out it falls, and power runs out quickly with a pull-back motor. Depending on how well it was positioned at the start and how well you guide the first step the sprint will go straight, curved or it will do something weird like hop on one foot and rolling on its back. I think you can compare it to rolling a coin: it takes a bit of practice. In one way the pull-back motor is the excellent choice for this. The advantage of the pull-back motor is that it will accelarate hard if load is removed. This is precisely what happens in moments when both feet are off the ground. Due to the acceleration of the pull-back motor in this moment, the feet will quickly regain contact with the ground again. You can see these little accelerations in the slow motion part of the video if you look closely. I had quite a lot of fun experimenting with this. So if you want to have a bit of fun building something small that jumps/runs/hops/flaps/... I recommend playing around with a pull-back motor 😉

Thanks 😊

Thanks! To be honest, if it fails on Lego Ideas I'll likely create a smaller 'inspired' design with a different function (not playing Tic-tac-toe) and share instructions of that. This design has some really hard to source parts, which is something I would change when sharing instructions. Different route, different (self imposed) limitations 😉

@Johnny1360 Thank you and have fun 😊