Double Helix GBC Modules

[bartneck]

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.

[dr_spock]

Cool. It would be great if the slides came in a transclear version.

[Philo]

It would be great if the slides came in a transclear version.

Yes! Is it necessary to close the top of tube?

[RohanBeckett]

sigh... another part to add to my wanted list ;)

well done.. both designs are very well executed, and seem to work well!

[doug72]

Looks and works good.

What part number are the helix tube sections ?

[soccerkid6]

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

[bartneck]

The tube sections are part nr 11267.