Berthil
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Everything posted by Berthil
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Here nobody as far as I know. The modified version described in this topic works like a dream. -
It will work like Doug said but also will take up a lot of space with the passing module. If you apply the 24:8 modification to the lift it will run fast enough with 1 train. It worked 7 event days without a glitch. The 24:8 mod you can read in earlier posts. I will use the passing module only when I use a lot of track length e.g. when I use the trains to close a GBC circuit. Correct. I use Stud.io to import LDD files and directly from there you can create a Bricklink wanted list to start picking your inventory and/or start ordering. I see you mention drive gear change on the carrier, may be add the 24:8 ratio? Must be used together with counterweights.
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[GBC] Roulette
Berthil replied to Berthil's topic in LEGO Technic, Mindstorms, Model Team and Scale Modeling
Thanks! Correct, the outer ring is rigid 3mm tube through the headlight bricks. It had to be very smooth so balls don't pile up. I used 8 sets of small train wheels. The bottom of the turntable is also a 'star' of 8 supports like the bottom pillar construction. It's made out of plates connected with several rings of axles and 16 no 3 connectors. The whole construction is very rigid (it has to go to events), I can pick it up easily. Also the turntable can be lifted off. The construction can be seen here. After this picture I added more rings of axles and no. 5 connectors Thanks. The shooters are indeed adapted versions of the Akiyuki basket shooters. 'What is already very good does not need re-inventing' is my opinion here. -
I let the video and pictures speak for themselves. It was a long build but very happy with the result.
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Since I'm still planning on building a GBC with pneumatics I think this module and crank system would be very suitable for pneumatics. Pneumatics would have enough power and can be timed well with the pneumatics switch. I would make a 100% LEGO pressure unit module to go with it, it would have a pressure switch because it doesn't have to make pressure all the time, only when the train is there. I already have eight of those costly blue V2 small pneumatic cilinders for the pressurizing unit. Let's see where your module goes and I may convert it to a pneumatic module :)
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For GBC I only apply PTFE with a brush (or cotton bud) where there is friction, no need to spray everything. This should be done during assembly.
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Version 2 of my cup to cup GBC but actually third rebuild. I thought it already had a separate topic but apparently not, hope you don't mind I create this one. After running it at several events, where it was one of the favorites of the public, I updated the drive system to a more direct drive and better force distribution by driving the crank through a 36 teeth gear instead of directly on a single axle. Also added more steppers for better ball entry and exit with basket. Direct drive from the XL motor. According to the gear calculator from Sariel this setup has 46Nm compared to 16Nm for the previous one! This makes the whole GBC run smoother and more reliable resulting in no dropped balls during the half hour I tested. The turntables are mounted with neck brackets in the frame to get the correct gear distance. For reference, version 1 video here
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May be because of my remark. I'm designing and running (complex) GBC machines and most of them have run over 150h of which 7h straight on event days. Silicone spray broke all of my 24t gears, PTFE doesn't.
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Nice collection of machines, trains seem to run well I think your Rotary dumper carrier doesn't use the 24 to 8 gear modification as it runs rather slow. The other train must wait a long time. With the 24 to 8 gear modification you only need one train to keep up with 1 ball per second and can leave out the passing module. The bottom picture in the picture below shows the modification. Modification only works with counterweights but you have them.
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Looks good. I already did about the same in my version that also discharges sideways. I don't use a gap but also extended a few liftarms that way. Here still with the complicated Akiyuki lift switches later replaced by worm carrier.
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Welcome @fury68 Have fun at the event and let us know how it went and if there are any learning points for us as events are the best testing grounds :)
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Thanks, I ordered 2 for my Wall-E GBC. I'm tired of having to say to the children they have to point to Wall-E with the remote all the time :) They have also (what seems random) discount coupons on top of the sale, I got an extra 3 to 4 Euro discount on separate orders.
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Supported right after the Youtube video email.
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Thanks @Doug72 I know Maico had a lot of events after LEGO World and again this weekend, he just said he will be uploading next week.
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After some investment I now have 5 trains with rechargeable Lithium polymer (8878) so I can use 2 trains to return the balls from circuit end to circuit begin at events. 2 run with the passing module, other 2 recharge and 1 emergency spare to use in case of ceased motor or too early drained battery. Two trains that have run about 120h both had a ceased M motor so keep a spare if you run events.
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Great project. As a GBC builder this would be my first Technic RC build (next to my RC Wall-E) but plan on building it, thanks for the development and free design files. Dank je Diederik! I use PTFE applied with a brush because silicon spray broke ALL my 24T gears in my GBCs. I assume the impact modifier in ABS dissolves in the silicon carrier in the spray. WD40 PTFE spay does not have this issue I can say after running the GBC's for over 150h.
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Rainbow Wave GBC
Berthil replied to Berthil's topic in LEGO Technic, Mindstorms, Model Team and Scale Modeling
Small update on the Rainbow Wave. It has ran a total of 120h on events without big problems. The original XL motor still functions. But I noticed more balls stopping on the wave when everything is not 100%. The speed of the wave decreases because of crooked tables, pollution or slightly out of sync gears. To keep full wave speed and less stress on the XL motor, I added 4 extra power drive repeaters. This time I used part 48496 (instead of 87408) making the drive more solid and less complicated. Below the 'open heart' surgery and result. I've put the Rainbow Wave on the side and could keep the string of 8t gears in it's place thus preserving the wave. By replacing the bottom five 16L Technic beams on the drive side with one 12L, three 16L, one 8L and one 12L (in that order) the rest of the wave stayed intact while performing the surgery. Drive axles can also stay the same, the 4 extra drive points are hooked on the 10L axles already present. Just let me know if you have the Rainbow Wave and also want to make this change and have questions. -
GBC General Discussion
Berthil replied to Jim's topic in LEGO Technic, Mindstorms, Model Team and Scale Modeling
I don't think so. His Miniloops are nice and usually with clever ideas but technically they are not GBCs. He's also selling the instructions instead of making them freely available. -
If you succeed building a compact version I'm also building it :) I'm not familiar enough with this module to advise you. It seems difficult to time but you did great stuff before :) At the moment I'm building a GBC that and a big carroussel and will act as a buffer, it doesn't use trains.
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Or use my switch if Dougs solution doesn't work for you. It works 100%.
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I didn't make one but Maico Arts will post one of the whole circuit soon. more than 15.000 a day, so in total over a 100.000. 1500 balls were running through the circuit of 159 modules.
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I am happy to report back that my version of modified Rotary Dumper ran without any hick-ups for 7 days 7 hours a day (so 49 hours) at LEGO World Utrecht the past week. I think that's remarkable for what still is a complex machine! With about 100.000 visitors over the whole event many people enjoyed the rotary dumper and made positive comments about it. Number one and two were the Invisible Lift and my Rainbow Wave but definitely the Rotary Number was number three for most of the visitors. Very pleased with it.
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Inbox and outbox 10 studs high and 10 studs wide, 1 ball per second throughput. Handle a batch of 30 balls at once without problems. What you do in between is up to you. Also no lubricants on the balls if you use any in your GBC. You can deviate from the inbox and outbox size if you have own modules that have matching in- and out boxes and can still be put next to each other in a circuit.
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That's the way how I will soon have 800 white balls I hope, nothing is sure in a Lugbulk until you have your order at home. It took me two years to get them in the Lugbulk list and with Lugbulk you have to wait almost a year until your ordered brick arrive. So it was a long process. Together with the 200 I already have I will have over 1000 balls. Currently I am buying only orange balls if have Bricklink orders and somebody has them in their shop, especially to sometimes get to the minimum order amount. I don't put in in Bricklink orders especially for the balls.
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Normally one person supplies the balls at an event with multiple exhibitors. Last year at Lego World 2000 balls were running in the circuit. Philip from PV Productions is one of the exhibitors at Lego World. In fact, he will staying in the same house as me the whole week so just let me know if you have any questions for him :) I believe he custom orders the balls to LEGO specification in China.