1963maniac Posted February 13 Posted February 13 (edited) I'm trying to design a GBC that will use Duplo gears as a ball lift. I would like to be able to spin the gear using a technic axle! I have tried using 2x2 and 4x4 round bricks with axle holes in the back, but the fit is too sloppy. I have tried every wheel and wheel/tire I own. Any suggestions would be appreciated!! Edited February 13 by 1963maniac Quote
Lyichir Posted February 13 Posted February 13 (edited) Since the bottoms of these gears are designed to rotate freely on Duplo studs, I imagine it would be hard to reliably drive these from underneath. It seems to me like the easier way to connect parts to power the gear would be via the top of the gear (with the Duplo studs that can be used to easily convert to System parts using 2x2 or 2x4 bricks) rather than the back. If the orientation of the gears is essential you could use one of the smaller gears backwards as a driving gear to allow the larger gear to face forward. Edited February 13 by Lyichir Quote
1963maniac Posted February 14 Author Posted February 14 19 hours ago, Lyichir said: If the orientation of the gears is essential you could use one of the smaller gears backwards as a driving gear to allow the larger gear to face forward. Thanks for your response! How is that accomplished? Quote
Lyichir Posted February 14 Posted February 14 (edited) 12 minutes ago, 1963maniac said: Thanks for your response! How is that accomplished? My thought (which unfortunately I can't demonstrate visibly since I don't have these gears IRL and don't think they're available on digital building software like Stud.io) would be to use two 2x4 bricks on the four Duplo studs to convert to System connections, and then use a part like this on the System studs to add an axle hole that you can use to connect a driving axle. I'm not sure how sturdy this would be, but that's the basic idea. Edited February 14 by Lyichir Quote
1963maniac Posted February 14 Author Posted February 14 Sounds like it would only be able to face backwards, Quote
MAB Posted February 15 Posted February 15 Glue is probably the easy answer to keep the round bricks in. Or if you don't want a permanent connection, then a rubber band around the brick before inserting it. Obviously a LEGO branded band if you want to be purist. Quote
1963maniac Posted February 16 Author Posted February 16 14 hours ago, MAB said: Glue is probably the easy answer to keep the round bricks in. Or if you don't want a permanent connection, then a rubber band around the brick before inserting it. Obviously a LEGO branded band if you want to be purist. Yes, rubberbands or maybe tape wrapped around them. Thanks for the suggestion!! Quote
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