Introduction
This manual provides essential information for the assembly, operation, and maintenance of your Wishiot MOC Rear Drive System Shock Absorbing Car Chassis. This building block model is designed to integrate with MOC Power Functions car vehicles, offering a functional rear-wheel drive system with differentials and shock absorption. Please read this manual thoroughly before beginning assembly.
Safety Information
- Small Parts Warning: This product contains small parts which may pose a choking hazard. Keep out of reach of young children. Recommended age is 14 years and older.
- Always assemble in a well-lit area with sufficient space.
- Ensure all connections are secure during assembly to prevent parts from detaching during use.
Package Contents
Your package will contain one of the following bundles:
- Bundle 1: 1 SET - Rear Drive System Shock Absorbing Bricks + Wheels
- Bundle 2: 1 SET - Rear Drive System Shock Absorbing Bricks (without wheels)
Please verify that all components are present according to your selected bundle. This product consists of loose parts and requires self-assembly.
Setup and Assembly
The Wishiot MOC Rear Drive System is provided as a set of building blocks that require assembly. While specific step-by-step instructions are not provided in this manual, the general assembly involves connecting the various technical parts to form the chassis structure, integrating the differential gears, and attaching the shock-absorbing elements.
- Identify Components: Lay out all the grey building blocks, yellow shock absorber elements, springs, gears, and axles.
- Assemble the Main Chassis Frame: Begin by constructing the primary frame of the rear drive system using the larger grey technical beams and pins.
- Install Differentials: Carefully integrate the differential gears into the central housing of the chassis. Ensure gears mesh smoothly.
- Attach Shock Absorbers: Connect the yellow shock absorber elements and springs to the designated points on the chassis frame. These typically involve connecting to suspension arms or similar structures.
- Install Axles: Insert the axles through the differential and chassis structure, ensuring they can rotate freely.
- Attach Wheels (if applicable): If your bundle includes wheels, attach them securely to the ends of the axles.
- Final Check: Once assembled, gently test the movement of the axles, the function of the differential, and the compression of the shock absorbers to ensure proper construction.

Figure 1: Assembled Rear Drive System (Bricks Only)

Figure 2: Angled view of the Rear Drive System, highlighting differential gears

Figure 3: Side view of the Rear Drive System with wheels, demonstrating shock absorption

Figure 4: Assembled Rear Drive System with wheels
Operating Instructions
This Rear Drive System is a functional component designed for integration into larger MOC (My Own Creation) car vehicles that utilize Power Functions. Once assembled and integrated into a compatible vehicle, it provides:
- Rear-Wheel Drive: Connect a compatible MOC Power Functions motor (not included) to the central drive shaft to power the rear wheels.
- Differential Action: The integrated differential allows the rear wheels to rotate at different speeds, which is crucial for smooth turning and improved traction in a vehicle.
- Shock Absorption: The spring-loaded shock absorbers provide suspension, allowing the vehicle to navigate uneven surfaces more effectively and enhancing stability.
Ensure that any connected Power Functions motors and battery boxes are correctly installed and powered according to their respective manuals.
Maintenance
To ensure the longevity and optimal performance of your building block model, follow these simple maintenance guidelines:
- Cleaning: Dust can accumulate in the gears and joints. Use a soft brush or compressed air to gently remove dust and debris. For stubborn dirt, wipe with a slightly damp cloth and dry thoroughly. Avoid harsh chemicals.
- Inspection: Periodically check all connections to ensure pins and axles are securely seated. Loose connections can affect performance.
- Storage: Store the model in a clean, dry place away from direct sunlight and extreme temperatures to prevent material degradation.
Troubleshooting
If you encounter issues with your assembled Rear Drive System, consider the following:
- Stiff Movement/Gears Not Turning:
- Check for any misaligned gears or pins.
- Ensure no foreign objects (e.g., dust, small debris) are obstructing the gear mechanism.
- Verify that all axles are correctly inserted and not bent.
- Loose Connections:
- Re-examine the assembly to ensure all pins and connectors are fully pushed into place.
- Over time, some connections might loosen; re-securing them usually resolves the issue.
- Shock Absorbers Not Functioning:
- Check if springs are correctly seated and not compressed or damaged.
- Ensure the yellow shock absorber elements are properly attached and can move freely.
Specifications
| Feature | Detail |
|---|---|
| Product Name | Rear Drive System Shock Absorbing Car Chassis |
| Model Numbers | T1156, T1155 |
| Brand | Wishiot |
| Type | Building Blocks (Technical Parts) |
| Color | Grey (with yellow shock elements) |
| Weight | 200g (approx. for bricks only) |
| Recommended Age | 14+ years |
| Compatibility | For MOC Power Functions Car Vehicles |
| Package Dimensions (approx.) | 10 cm (Length) x 10 cm (Width) x 10 cm (Height) |
| Package Weight (approx.) | 0.3 kg |
| Origin | Mainland China |
User Tips
- Patience is Key: Assembling building block models requires patience and attention to detail. Take your time to ensure each connection is correct.
- Organize Parts: Before starting assembly, sort the parts by type or color to make the process smoother.
- Check Compatibility: This system is designed for MOC Power Functions. Ensure your other components (motors, battery boxes, etc.) are compatible for optimal performance.
Warranty and Support
For specific warranty information regarding your Wishiot MOC Rear Drive System, please refer to the terms and conditions provided by your retailer or contact the seller directly. As a building block set, individual part replacement may be available through the seller.
For any questions, bulk orders, or customized product inquiries, please contact Wishiot Store directly through the platform where you purchased the product.