Our GraviTrack Marble Machine Kit is our newest addition to the Marble-Drop mechanism family.
The Solderless Solar version of the Gravitrack marble machine brings the same tick-tock pulse movement but with none of the molten metal! The only tools required to get this beauty running is a phillips-head screwdriver, a sharp edge, and a bit of elbow grease.
Watch as the sun powers the slow but elegant hand-off mechanism that passes marbles to the top of a sweeping multi-level track. You will witness the fascinating step-by-step action of the arms as the geometry changes periodically. Patience is rewarded with the plunk, and rollll of a successful motion cycle. The more light it gets, the more often it moves. It's solar-powered stop-action motion!
See the GraviTrack Battery
|Dimensions||23 × 13 × 3 cm|
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Warning: This product contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm.
Please visit www.P65Warnings.ca.gov for more information. This item was manufactured prior to August 31, 2018.