bartneck Posted May 22, 2016 Posted May 22, 2016 Great Ball Contraptions are fascinating and I designed two GBC modules that use LEGO slides for getting the balls up and down. The first uses a ball pump to push the balls up through the tower. The balls then roll down a double helix: The second modules uses the double helix for an Archimedes Screw. This is a very effective method of lifting balls up. Quote
dr_spock Posted May 22, 2016 Posted May 22, 2016 Cool. It would be great if the slides came in a transclear version. Quote
Philo Posted May 22, 2016 Posted May 22, 2016 It would be great if the slides came in a transclear version. Yes! Is it necessary to close the top of tube? Quote
RohanBeckett Posted May 22, 2016 Posted May 22, 2016 sigh... another part to add to my wanted list ;) well done.. both designs are very well executed, and seem to work well! Quote
doug72 Posted May 22, 2016 Posted May 22, 2016 Looks and works good. What part number are the helix tube sections ? Quote
soccerkid6 Posted May 22, 2016 Posted May 22, 2016 Wonderful way to put those slide elements to good use It is unfortunate that you can't actually see the balls climbing the screw, but that doesn't take away from it being a very clever and effective design Quote
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