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Berthil

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  1. Berthil
    I see there are more pictures available now, looking good! Possibly March 3rd the Rainbow Wave will be on Spanish television on El Hormiqeuro 3.0, I'm traveling to Madrid with 3 GBCs for that. First indication was that Vin Diesel and Charlize Theron would also be in the show but that day it's Maria Bravo and Eva Longoria (Desperate Housewives, l'Oréal). Good promotion for Lego and GBCs :) 1 x 14 is possible, the liftarms on the inside are most important for the continuity of 38 toothed wheels. However, with 1 x 14 your are either short or too long when compared to 6 bricks of 1 x 16 so shorter or longer ones also need to be in. Soon a very good building instruction well be available.
  2. Berthil
    Thanks! Soon an excellent building instruction will become available from the hand of an experienced GBC instruction builder, with 2 very good improvements by him. A simplified inbox making it suitable of handling more than a handful of balls at once, and a better mounted belt drive axle. Very pleased with it! The round brick is like you mention, round 2x2 brick with axle hole :) The axles are 8L (and have to be straight) Good luck and thanks for the support!
  3. Berthil
    Thanks!
  4. Berthil
    Looks like I'm going to be on Spanish TV with the Rainbow Wave. I've been invited to fly to Madrid in April and show it on the El Hormiguero 3.0 show, possibly as a technical sidekick. Doesn't matter, I would welcome the experience and good for promotion of GBC! It looks like it is very popular and I might see Will Smith or other celebrity there :) Somehow I'm not getting emails when new posts are here. That looks very good Brian. I also had to replace about ten bended axles, it's a good testing machine for axles that are not straight. Courbet is making a very nice building instruction, I've send him some detailed pictures of the Inbox.
  5. Berthil
    Great idea and very nice work to get everything working so well in such a small package!
  6. Berthil
    Criticism is no problem and should be learned from :) You are right about the construction but I wouldn't call it 'hanging', with the 1x1 round bricks in between where there is room it is a very rigid construction to minimise friction and/or prevent pistons sticking. I could hold the whole rail with double plate layers in my hand on one end without it bending much. The 'cross' beams of 1 stud just keeps it in place. Hope that helps. But may be BrianTG can comment on the use of 1 layer of technic plates if he tried that.
  7. Berthil
    I've put it on Lego Ideas: https://ideas.lego.com/projects/169256
  8. Berthil
    Very nice to see that you are making your own, good start! The cross 2 x 8 technic plates on top may work but that's not how I did that. I used 2 x 1 single stud plates on top and a 1 x 1 round plate on the bottom to keep cross beam 1 stud thin between the two layers of technic plates. I tried to keep all supports 1 stud thin and in line to have as much as possible an open view to the mechanism. So it may be more esthetic than a real need. The two sets technical plates are for rigidity to prevent unwanted friction. 1 motor drives 38 pistons and the pistons itself may not 'hang' when going down or balls bump into it and stop. I had to replace about 8 piston axles because they were not straight enough or too thick. Of course you may try a single height row, it may also work although I can see in your second picture the axels are not all pointing straight up but follow the wave? Could also be angle of photographing, a practice run will tell :) All 8 tooth gears are linked to keep everything synchronized for a perfect wave. I didn't try your suggestion, may be it's possible to leave one gear out at the end in every group. With the gear lash it is indeed possible that groups are not in sync from the main shaft even when they are all attached. Linking them together makes sure they are all synchronized because when not you can hear the motor working more so it's also a detection for hidden friction caused by 1 tooth difference between the group drives on the main shaft. Synchronizing them when all attached to each other is quite some work. Your idea might also work and is probably easier to synchronize. But may be with this method the two pistons at the end of every group are not perfectly in sync causing the balls to stop. Please try :) Getting the balls onto the lift was the most difficult part of this GBC. The lower axle of the belt also lifts the bottom part slightly up with a thin liftarm to act as an agitator, otherwise the balls bridge before the 2 x 2,5 opening to the belt. I guess it's also possible to use another ball feeder like a stepper. As long as it's synchronized with the belt any solution should work. Just let me know if you need more help, I'll make pictures then.
  9. Berthil
    Thanks all for the positive feedback! Please let me know how I can help if you get stuck building one.
  10. Berthil
    Here a view from the bottom with 8-tooth gears that are 1 offset from the next. Of course there is one 8 tooth gear in between, a wave would not be possible without it. The 1x15 technic liftarms create a continues row to be able to put all 76 gears in line without interruption.
  11. Berthil
    Thank you for your offer! I might have a go at making the instructions myself, I've already done a few instructions. If I get stuck I'll contact you :) That's right, 1x2 panels with round corners but no tile in the middle and no 2x2 plate. The colors are 2 x 2 so the panels fit nicely on that. The round corners are important otherwise a ball might stop. A ball that stops is no problem, the next ball will pick it up but with round corners no ball stops on the waves. Yes, totally flat. There is no room in the amplitude of the colors to make an angled surface but also not needed. I was happy when I saw that in the prototype :)
  12. Berthil
    These are the most detailed that I have but I can of course make more.
  13. Berthil
    Hi all, I'm Berthil from The Netherlands. I came out of the dark ages about 2,5 years ago and started building the historic F1 models of Luca Rusconi of which I now have build 11. Then I collected and build all Modulars and designed a modular myself, the squash court in Maastricht, the squash court where I play squash twice a week. I displayed the squash court and F1 models during the last 2016 Dutch Lego World the whole week. Then I got interested in GBCs and build a few Akiyuki's, also a modified one with ball shooters and I designed and build the Rainbow Wave, my 1st topic about the wave here. Pictures on Flickr. Further hobbies are MINI's and driving them, I have three. One is heavily modified for the Nürburgring as I live not too far from it and drove about 500 laps there. The others are the limited edition GP and a cabrio. On the domestic front everything is okay with two kids studying, hence the extra time for Lego building ;)
  14. Berthil
    I've designed the below GBC called Rainbow Wave. It has 38 Lego colors and about 1150 moving parts. It is powered by a single motor, with each of the colored pistons sitting on an 8-tooth gear. Each piston’s gear is exactly 1 tooth offset from its neighbors making one wave 8 colors. The GBC is level so the balls are moved by the waving surface. Free building instruction for version 2 and parts list is available on Rebrickable with a thank you @Courbet for the improvements and creating the digital model! https://rebrickable.com/mocs/MOC-7456/Berthil/rainbow-wave-gbc-v2/
  15. Berthil
    Thanks, I will do so :)
  16. Berthil
    Very inspiring and thank you for all the work in analyzing the design work of Akiyuku into building instructions. I've build the most complex ones of Akiyuki myself to learn and came up with my own GBC creation in the spirit of Akiyuki (I hope).
  17. Berthil
    It's almost a closed track shooting the balls up with two escapes to prevent clogging up the shoots. I know there is a lot of variation but balls fly up at such a high speed that they all reach the end. I've let it run for an hour with an occasional ball lost because a small part is still open, I'll fix this before running it 7 days @ Lego World :)
  18. Berthil
    Maybe also good to note I put the whole launching pad in rubber (45590) to absorb too much vibration and the bottom of the launching pad is also rubber for optimum grip. The fact that the balls have a large self propelling forward spin shows this works. Of course this self propelling spin back fires at the end of the half loop (making it backwards spin) but then the ball is where it should be so no problem :)
  19. Berthil
    Thanks! My first GBC with own input, hopefully more to come. Gearing is 24 tooth (3648) to smallest (10928), then 16 tooth (94925) to smallest again. Last gears are on both sides of axle to make sure the axle is evenly loaded, that's 12 tooth (32270) to 12 tooth (6589) so no ratio there. It runs on full power on one 9V train regulator but can also run 1 click lower. Not lower as the balls don't have enough speed at that power. I'll put some detailed shots on Flickr.
  20. Berthil
    I've converted the Akiyuki Marble Run to a stand alone GBC module by shooting up the balls on the inside of the marble run by two rotating wheels. The GBC is made 100% from Lego including 63 Hose, Rigid 3mm D. 32L / 25.6cm! The inbox still needs a small modification but otherwise it works well. Thanks for providing the building instructions of the Akiyuki Marble Run!
  21. Berthil
    Thanks Blakbird and The Rebricker. To learn from the it I've build this as my first GBC with the aim to design some GBCs myself. Calibration is a real challenge as the ones know that have build this. Most modifications I did were in the head that picks up the two balls, visible in my video. For fun I added some days from the 60133 advent calendar. Here's my video and thanks for all the info and videos I have seen here.
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