This versatile kit has been created to bridge the gap between visualising a motorised process and being able to create it yourself, thereby encouraging further investigation into the possibilities and limits of mechanical processes.
917D/A Multi Ratio Gearbox (Assembled).
* Provides 6 different ratios and 12 speeds
* Rugged compact design & construction.
* Ideal for models, CDT, and R&D projects.
* Operates from 1.5v & 3v
* Extensive range of accessories available.