Description
Overview
The Tamiya XR311 Combat Support Vehicle holds a special place in RC history as Tamiya's first RC model with a true suspension system, originally released in 1977. This re-release version maintains the basic layout of that groundbreaking original while incorporating modern improvements that enhance both performance and reliability. The injection-molded body captures the purposeful military look of the real FMC XR311, complete with interior parts and a driver figure for exceptional realism.
The 1/12 scale chassis features a duralumin frame with a rear-mounted motor and rear-wheel-drive layout, creating a balanced platform that defined early RC car design. The 4-wheel double wishbone suspension with metal torsion bar springs represents a significant upgrade from earlier releases, providing consistent handling and durability. This kit bridges RC history with modern expectations, making it perfect for collectors and enthusiasts who appreciate the roots of the hobby.
Key Features
- 1/12 scale R/C model assembly kit with 400mm length, 168mm width, 139mm height
- Tamiya's first RC model with suspension system (original 1977 design)
- Injection-molded military vehicle body
- Interior parts and driver figure included
- Duralumin chassis frame
- Rear-mounted motor, rear-wheel-drive layout
- 4-wheel double wishbone suspension
- Metal torsion bar springs (upgraded from original plastic)
- Fully enclosed gearbox with 3 gear ratio options
- 540-type motor included
- ESC included
Historical Significance
- First Tamiya RC car with working suspension (1977)
- Established foundation for future RC car development
- Multiple re-releases with continuous improvements
- 2012 version features metal torsion bars and modern double wishbones
- Collector favorite with strong historical value
Chassis Features
- Duralumin frame construction
- Rear-wheel-drive (2WD) layout
- Centrally positioned battery for balance
- Receiver and ESC positioned on either side
- Upper and lower H-arms (double wishbone)
- Adjustable metal torsion bar springs
- 3-bevel differential gear
- 2-piece steering tie-rod system
- 256mm wheelbase
Performance Benefits
- Exceptional balance from centralized layout
- Metal torsion bars provide consistent spring rate
- Double wishbone geometry for precise handling
- 3 gear ratio options (9.3:1, 16:1, 21:1)
- Sealed gearbox protects internals
- Durable duralumin frame resists damage
Usage Notes
The XR311 performs well on both paved and light off-road surfaces. The rear-wheel-drive layout provides exciting handling characteristics with controlled power slides. The three gear ratio options allow optimization for different driving styles and surfaces. Recommended for builders ages 14 and up. Body is injection-molded and can be painted with standard hobby paints.
Technical Specs
| Specification | Detail |
|---|---|
| Scale | 1/12 |
| Length | 400mm |
| Width | 168mm |
| Height | 139mm |
| Wheelbase | 256mm |
| Weight | 1,800g |
| Tread | 138mm (front and rear) |
| Tire Width/Diameter | 29/77mm |
| Drive | Rear-wheel drive (2WD) |
| Chassis | XR311 |
| Chassis Material | Duralumin |
| Body Material | Injection-molded plastic |
| Motor | 540-type |
| Suspension | 4-wheel double wishbone |
| Springs | Metal torsion bar |
| Differential | 3-bevel gear |
| Gear Ratio Options | 9.3:1 / 16:1 / 21:1 |
| Manufacturer | Tamiya |
| Item Number | 58004-A |
What's Included
- Complete unassembled XR311 chassis kit
- Injection-molded XR311 body
- Interior parts and driver figure
- Wheels and tires (4 each)
- Metal torsion bar springs
- 540-type motor
- Electronic speed controller
- Decal sheet
- Comprehensive instruction manual
Needed to Complete
- 2-channel radio system (transmitter and receiver)
- Standard-size steering servo
- 7.2V NiMH or 7.4V 2S LiPo battery pack
- Compatible battery charger
- AA batteries for transmitter
- Hobby paints (body is injection-molded)
- Basic assembly tools
Summary
The Tamiya XR311 Combat Support Vehicle represents the dawn of modern RC car design as Tamiya's first model with suspension. This re-release combines the historic significance and military styling of the 1977 original with modern upgrades including metal torsion bars and improved double wishbone suspension. Perfect for collectors, military vehicle enthusiasts, and RC historians seeking a tangible connection to the hobby's origins.