Tamiya 70186 Underwater Gearbox Learning Kit  [70186]

Product Summary

The Tamiya 70186 Underwater Gearbox Set provides a hands-on way to investigate mechanical movement in waterborne models. Suitable for both hobbyists and classroom groups, the kit supports exploration of propulsion and gearing through practical assembly. Its components lend themselves to swimmer and amphibious concepts.

Components and Classroom Value

The set includes a Submarine Motor Mini (High Speed Type) and operates with a gear ratio of 28.9:1. An attachment plate allows secure fixing to foam boards (sold separately) using screws, which helps when building model hulls or lesson prototypes. The gearbox runs from one R03/AAA/UM4 battery, not supplied, and its accessible layout is useful for teaching basic mechanical principles.

Applications and Expansion

From individual hobby projects to guided lessons, the Tamiya 70186 Underwater Gearbox Set is flexible enough to join with other Tamiya kits to expand function and complexity. It makes a solid base for iterative design and prototyping.