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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