![Lego Technic video about Lego 2 Speed Automatic gearbox - worm gear prototype. Includes build instructions. Lego Technic video about Lego 2 Speed Automatic gearbox - worm gear prototype. Includes build instructions.](https://technicbrickpower.com/content/thumbs/lego_technic_2_speed_automatic_gearbox_compact_with_build_instructions.jpg)
Lego Technic video about Lego 2 Speed Automatic gearbox - worm gear prototype. Includes build instructions.
![LEGO MOC 2 Speed Automatic Gearbox - Smooth & Compact by TechnicBrickPower | Rebrickable - Build with LEGO LEGO MOC 2 Speed Automatic Gearbox - Smooth & Compact by TechnicBrickPower | Rebrickable - Build with LEGO](https://cdn.rebrickable.com/media/thumbs/mocs/moc-51810.jpg/1000x800.jpg)
LEGO MOC 2 Speed Automatic Gearbox - Smooth & Compact by TechnicBrickPower | Rebrickable - Build with LEGO
![Ultra Compact 8 Speed Sequential Gearbox - LEGO Technic, Mindstorms, Model Team and Scale Modeling - Eurobricks Forums Ultra Compact 8 Speed Sequential Gearbox - LEGO Technic, Mindstorms, Model Team and Scale Modeling - Eurobricks Forums](https://live.staticflickr.com/65535/48357427577_dc047aaec2_b.jpg)
Ultra Compact 8 Speed Sequential Gearbox - LEGO Technic, Mindstorms, Model Team and Scale Modeling - Eurobricks Forums
![Ultra Compact 8 Speed Sequential Gearbox - LEGO Technic, Mindstorms, Model Team and Scale Modeling - Eurobricks Forums Ultra Compact 8 Speed Sequential Gearbox - LEGO Technic, Mindstorms, Model Team and Scale Modeling - Eurobricks Forums](https://live.staticflickr.com/65535/48357281906_2dc096849f_b.jpg)
Ultra Compact 8 Speed Sequential Gearbox - LEGO Technic, Mindstorms, Model Team and Scale Modeling - Eurobricks Forums
![LEGO MOC Compact symmetrical 4 speed AWD gearbox with differential lock by hdegroot | Rebrickable - Build with LEGO LEGO MOC Compact symmetrical 4 speed AWD gearbox with differential lock by hdegroot | Rebrickable - Build with LEGO](https://cdn.rebrickable.com/media/thumbs/mocs/moc-57182.jpg/1000x800.jpg)