Courbet

Eurobricks Vassals
  • Content count

    85
  • Joined

  • Last visited

About Courbet

Profile Information

  • Gender
    Male

Extra

  • Country
    France

Recent Profile Visitors

433 profile views
  1. Hi everyone, In the following links you will find complete building instructions and inventory for Akiyuki's latest GBC masterpiece: Cup to Cup type 2 http://bricksafe.com/files/Courbet/akiyuki-project/Akiyuki_Cup_To_Cup_GBC_Type2.pdf http://bricksafe.com/files/Courbet/akiyuki-project/Cup_To_Cup_GBC_Type2.bsx As David noticed, Akiyuki provided a lot of pictures with great definition from almost every angle of his new module, so it really was not a big challenge to replicate it this time. This module borrows a lot from old modules of him, Cup to Cup obviously but also Cycloidal Drive for the input and the Snake Slide of Fork to Fork. The structure of the tower reminds me also of the Bucket Wheel Tower module. On the other hand, the kinematic of this module is brand new and it's a real marvel, Akiyuki is still the master at this game. For the instructions, I saved some time by reusing some submodels I made for the Strain Wave Gearing module which also share input and output with this new one. Although Akiyuki does not hide anything from view in his video or pictures, building the module properly is not the easiest. All the trouble lies with the tuning of all those gears in the tower. I have tried to represent it the best I could in the instructions but I have not tried to build the module following those instructions, so I hope you won't have too much trouble making your module work as it should. I'd appreciate your feedback on the matter. The Indexer should also be tuned to the Cups movement, it's not shown in the instructions but it's actually very easy to do after all the other tuning is done. Also, you should know that my replica does not behave that well at full speed: there are some ball drops in the last cup relay which is less secure than the others. A notch below full speed on the 9V regulator the reliability is nearly perfect and the rate is actually 1 ball per second. I believe Akiyuki shot his video at that speed. Two notches below full speed and this module is 100% reliable. Laurent
  2. Maybe not next week but very soon... Laurent
  3. Yes, it's almost too much information. It kills the fun a bit. Laurent
  4. Hi everyone, Akiyuki released his first GBC Train video in 2011. Since then, he constantly improved his design as there are not two videos of his layouts that show the exact same GBC Train. At Brickfest 2017 he presented a brand new version of his train, always following the same principles as before but every component was completely new. He has called it GBC Train (electrical switch type). Whilst the only material available was his video of the event (and an other very useful video from Takanori Hashimoto alias Yattaran who also presented some really interesting modules himself), Yoann (yoyo08190) and I have been able to build a working replica of his new train, which we believe to be quite faithful except maybe for the train itself where there is a notable amount of guesswork. Although it's the component we see the most in the videos, it's very hard to see what is actually beneath the battery box! Let's examine Akiyuki's new Train. 1) Motor The motor is a studless build now, except for the bucket/skip. It is stronger than before. The M motor drives the four wheels which gives the train more traction. On each wheel is also a 8t gear which could be used as a power take-off. The train is slightly longer and taller than before, the bucket has a 9x15 base instead of 8x14. The big novelty is the use of a Power Function switch to change direction of rotation. It is linked to the two 15L liftarms on the side of the train. A clutch is no longer present, wheels and gears turn all the time. The train is symmetrical and could ride to the loader or unloader battery box first or PF switch first. This has the advantage to dispense the layout of switch rails (except for the siding if two trains are involved) and the railroad track can be constituted of only two straight if wanted. Connection between PF elements is not shown in intructions but it's really obvious. There is space between motor and battery box for the motor cable, and between battery box and switch for the switch cable. The routing of cables must be done with care, cables must not foul switch movement or the bucket operations. 2) Loader The loader is bigger than before but also much simpler. Both the loader and unloader use the same trigger part which is now studless. The loader itself is a more traditional built and looks a lot like the old one. Unlike the old one, there is no clutch on the loader, as it is no longer necessary to stop the loader before the train leaves the platform. There are two gaps in the conveyor belt and when the conveyor belt is in sync with the trigger, the switching operation will always take place when the gap of the conveyor belt is at the upmost position, not dropping balls. Rail tracks that lead to the loader must be raised slightly using plates to make a ramp. 3) Unloader The unloader is much bigger than the old one, with a mix of studded/studless construction and looks nothing like the old one. The mechanism to tip the bucket involves two 28t turntables and two 13L gear racks. As with the loader, the access to the Unloader necessitates a ramp but its geometry is more important here since there is almost no play between the unloader arms and the bucket. It's better for the last straight track to be horizontal, 1 brick above ground. The unloader part and the trigger part must be synchronized when connected. Obviously, the unloader arms must be horizontal at the release of the trigger. There are two others important things to know about this new unloader: - The train bucket must be built with the current reinforced 4x3 panels with side flanges. This unloader won't work if the train uses the old style panels. - Integrated in the train of gears is a 20t/24t reduction built on a 4x6 bent liftarm. It will NOT work with current 20t and 24t gears. You must use older versions of those gears from several years ago, or modify the design a bit (the first version I built had two additional 8t gears between the 20t and 24t, it is an easy mod and it works well but Yoann and I are pretty sure Akiyuki built his model as described in the instructions). 4) Siding track As before, it is optional and it needs a second train to be used. It is more reliable than the old one. I have compiled instructions for all the components into one PDF. Inventory files are separated: http://bricksafe.com/files/Courbet/akiyuki-project/gbc-train-est/Akiyuki_Train_electrical_switch_type_GBC.pdf http://bricksafe.com/files/Courbet/akiyuki-project/gbc-train-est/Motor_inventory.bsx http://bricksafe.com/files/Courbet/akiyuki-project/gbc-train-est/Loader_inventory.bsx http://bricksafe.com/files/Courbet/akiyuki-project/gbc-train-est/Unloader_inventory.bsx http://bricksafe.com/files/Courbet/akiyuki-project/gbc-train-est/Siding_inventory.bsx Here is a short video I have made showing Akiyuki's train in a small loop: Laurent
  5. You are right 9VSystem, we have built a functioning replica of the latest of Akiyuki's GBC train. I can confirm a better reliability than the last one as well as other improvements too.
  6. After a very productive week, Yoann (@yoyo08190) and I have made a functional replica of another new module from Akiyuki's Brickfest 2017 video. Guess which one? Yoann will probably post a video very soon. I still have got a lot of work to do, instructions will take time to complete and test. Regards, Laurent
  7. [GBC] Egg Process Machine

    Hi everyone, I have finished my work on Yasuhiko Kuramata's Egg Process Machine GBC (Version 1). It is indeed a very nice small-size (650 parts) GBC module with a very clever clamp mechanism. Link to instructions: http://bricksafe.com/files/Courbet/gbc-project/Y_Kuramata_Egg_Process_Machine_GBC.pdf Link to parts list: http://bricksafe.com/files/Courbet/gbc-project/Egg_Process_Machine_GBC_Parts_List.bsx Once the build is finished, you must synchronize the rotor and the shutter. When the shutter is low, an arm of the rotor must be right above it. Since the rotor can be slightly lifted for uncoupling, this is something that takes 2 seconds to do! I have tested it in a small GBC loop of 5 modules (see the video below) and it behaved flawlessly. Laurent
  8. No I won't. Besides, I think it would clash with the all-liftarm structure of this module (like Akiyuki's Pneumatic module).
  9. I won't have to change anything to the original design to make it compatible with the other modules, input and output are designed at the right height.
  10. Sure the Geneva Drive is a great module, but without some additionnal pictures/video I can't see how to replicate it faithfully. On the other side, one that is well documented is the Egg Process Machine by Y.Kuramata. I have made a replica of it today. The module is flimsier than Akiyuki's ones, but it works really well and is fun to watch. The truth is, @RohanBeckett has also built a functionning replica of this module, and he is ahead of me since he already has a digital file of his work. One way or another, a set of instructions will soon be made for this module.
  11. I just started working on something from the above video.
  12. Hi @LEGO_GBC_NL, thanks for your kind words. Since 75% is the default setting for motors, I kind of thought it might be the best setting for consumption consideration (I was running the EV3 on LR6 batteries, and they exhausted themselves very fast during the tedious test period). I also thought running the motors at 100% and constantly switching rotation might hurt them a bit in the long run, a thing I wanted to avoid since the whole EV3 material was not mine. Akiyuki's program is more sophisticated that mine and seems to incorporate a return to initial position after a delay without activity. As it was the first (and as of today, only) program I was to write for EV3, I aimed at simplicity and effectiveness and did not even tried to incorporate this behaviour which would indeed avoid the annoying need to manually reset the grabber each time the program is run.
  13. Those new modules don’t belong to the Akiyuki Project (they are from Takanori Hashimoto and Yasuhiko Kuramata if I’m not mistaken) but they are interesting nevertheless. A new version of the GBC Train seems to be the only new stuff from Akiyuki on this occasion, let’s hope for a brand new module from him soon.
  14. Sorry to disappoint but I'm not working on it. Other stuff got in the way and I'm not sure I will ever tackle it one day.
  15. So, how good is the tubing from Modulor.de ? Is it a good match for Lego one ?