1. Product Overview
The wishiot MOC 6-Speed Gearbox Building Blocks Kit is designed for enthusiasts of building blocks and MOC (My Own Creation) car modifications. This kit allows for the construction of a functional 6-speed manual transmission system, which can be controlled via an APP-enabled motor. It is compatible with standard small building blocks, such as those from Lego.
The kit includes all necessary loose parts for assembly, an APP-controlled motor, and a battery box. Please note that this is a loose kit and requires self-assembly.

Figure 1: Assembled 6-Speed Gearbox Building Blocks Kit
2. Safety Information
- Small Parts Warning: This product contains small parts and is not suitable for children under 3 years old due to choking hazards. Recommended age is 14+ years.
- Battery Safety: The product uses a Lithium battery. Do not disassemble, crush, puncture, short-circuit, or expose to high temperatures or water. Dispose of batteries according to local regulations.
- California Proposition 65 Warning: ⚠ WARNING: This product can expose you to chemicals including phthalates (DEHP), which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.
3. Package Contents
The kit includes various building block components, gears, shafts, and an APP-controlled motor with a battery box. A detailed parts list with quantities and part numbers is provided in the included PDF manual.
Reference: For a complete list of parts, please refer to pages 2-4 of the User Manual (PDF) available at User Manual (PDF).
4. Assembly Instructions
Assembly of the 6-speed gearbox requires careful attention to detail. The following steps outline the general process. For detailed, step-by-step visual instructions, please refer to the official User Manual (PDF).
4.1 General Assembly Notes
- One standard building block unit is approximately 8mm.
- Ensure all connections are secure but not forced.
- Pay close attention to the orientation of gears and rings.
4.2 Key Assembly Steps and Tips
- Initial Frame Assembly: Begin by assembling the main structural frame using the provided beams and pins.
- Gearbox Core Construction: Assemble the internal gear mechanism.
- Important Gear Orientation: During the assembly of the gearbox core, ensure the following:
- The light gray power extension ring must be fully inserted into the shift gear.
- The small ring of the dark gray 16-tooth shift gear should face outwards.
- Before shifting, the dark gray power transmission rings must all be adjusted to the middle position.
Figure 2: Critical gear and ring orientations (Refer to page 16 of PDF)
- Motor Integration: Connect the APP-controlled motor to the input end of the gearbox. The input end is typically where the main drive shaft connects.
Reference: For detailed visual assembly steps (pages 5-34), please refer to the User Manual (PDF) available at User Manual (PDF).
5. Operating Instructions
This gearbox kit is designed to be controlled by an APP-enabled motor. Follow these steps to operate your assembled gearbox.
5.1 Motor and Battery Box Controls
The motor unit includes an integrated battery box with specific controls:
- Power On: Press the On/Off button twice quickly.
- Power Off: Press and hold the On/Off button for 3 seconds.
- Change Direction/Stop: Press the On/Off button once to cycle through motor forward, reverse, and stop states.
- Charging: Connect a USB cable to the charging port on the motor/battery box.

Figure 3: Motor/Battery Box (Grey/White) with controls and dimensions

Figure 4: Motor/Battery Box (Yellow/White) with controls and dimensions
5.2 APP Control
To utilize APP control, scan the QR code provided on the motor/battery box or in the paper manual to download the dedicated application. Follow the in-app instructions for pairing and controlling the motor.
5.3 Gearbox Testing and Operation
After completing the assembly, it is recommended to test each gear to ensure proper function:
- Remove the upper shift bracket (if installed for final assembly).
- Ensure the dark gray power transmission rings are correctly inserted into the light gray power extension rings.
- Connect the motor to the input end and power it on.
- Test the first gear. Ensure other power transmission rings remain in their middle (neutral) position.
- Systematically test gears two through six by adjusting the shift mechanism.
- Once all gears are confirmed to be functioning correctly, re-install the upper bracket if it was removed for testing.
Reference: For visual guidance on gear testing (pages 35-40), please refer to the User Manual (PDF) available at User Manual (PDF).
6. Maintenance
- Cleaning: Use a soft, dry cloth to clean the building blocks and motor. Avoid using harsh chemicals or abrasive materials.
- Storage: Store the kit in a cool, dry place away from direct sunlight and extreme temperatures.
- Battery Care: If the product will not be used for an extended period, ensure the battery is partially charged (around 50%) before storage. Recharge periodically to maintain battery health.
7. Troubleshooting
- Motor Not Responding:
- Ensure the battery is charged.
- Check that the motor is properly connected to the gearbox.
- Verify the motor is powered on (press twice to turn on).
- Gears Not Shifting Smoothly:
- Review assembly steps, especially the orientation of the power extension rings and shift gears (refer to page 16 of the PDF manual).
- Ensure no parts are obstructing the movement of the shift mechanism.
- Disassemble and reassemble problematic sections if necessary.
- APP Connection Issues:
- Ensure Bluetooth is enabled on your device.
- Make sure the motor is powered on.
- Try restarting the APP and the motor.
- Confirm you have downloaded the correct APP by scanning the QR code.
8. Specifications
| Feature | Detail |
|---|---|
| Product Name | MOC 6-Speed Gearbox Building Blocks Kit with APP Control Motor |
| Brand | wishiot |
| Material | Plastic |
| Block Size | Small building block (Compatible with Lego) |
| Power Source | Lithium battery (integrated in motor unit) |
| Recommended Age | 14+ years, 18+ years |
| Origin | Mainland China |
| Assembled Gearbox Dimensions (approx.) | 15.1 cm (Length) x 5.6 cm (Width) x 8.5 cm (Height) |
| Motor/Battery Box Dimensions (approx.) | 5.6 cm (Length) x 2.3 cm (Width) x 3.2 cm (Height) |
| Package Dimensions | 20 cm (Length) x 15 cm (Width) x 10 cm (Height) |
| Package Weight | 0.201 kg |
9. User Tips
- Patience is Key: Building block kits, especially complex ones like gearboxes, require patience. Take your time with each step.
- Organize Parts: Before starting assembly, sort your parts by type and size. This will significantly speed up the building process.
- Refer to PDF: The provided PDF manual contains highly detailed visual instructions. Always refer to it for clarity on specific steps and part orientations.
- Test as You Go: For complex mechanisms like gearboxes, it can be helpful to test sub-assemblies for smooth movement before fully integrating them.
10. Warranty and Support
For product support, technical assistance, or inquiries regarding missing/defective parts, please contact the manufacturer, wishiot, or your point of purchase. Always provide your product model name and any relevant purchase details when seeking support.
Additional Resources: A comprehensive user manual in PDF format is available for download: User Manual (PDF).