The GraviTrack Solar Marble Machine Kit (Solderless Version)
Our GraviTrack Marble Machine Kit is our newest addition to the Marble-Drop mechanism family.
Suitable for age 14+
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 roll of a successful motion cycle. The more light it gets, the more often it moves. It’s solar-powered stop-action motion!
- Intermediate skill level – ages 14+
- Soldering NOT required
- Basic hand tools required (Phillips screwdriver, craft knife, wood glue)
- No batteries included (or needed – it’s solar powered!)
- 2 hour build time
- 1 x Set of laser-cut wood parts
- 1 x GM3 Motor
- 1 x 37x66mm solar cell
- 1 x Solderless SolarEngine board
- 1 x GMW Motor mount
- 4 x 3/8″ steel marbles
- Assembly hardware