AR45P Offset Portal Axle for SCX10 III – Full Specification & Upgrade Guide
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AR45P Offset Portal Axle for SCX10 III – Full Specification & Upgrade Guide
The AR45P Offset Portal Axle is an advanced upgrade component designed for 1/10 scale RC crawlers, specifically tailored for the SCX10 III platform. With a strong aluminium case made using CNC machining, built-in driveshafts that allow for smooth movement, and a steering angle greater than 45°, it greatly enhances ground clearance and handling for tough off-road driving.
Compatible with existing gears, servo mounts, and brass weights, this axle is ideal for scale model enthusiasts looking to enhance performance and realism.
Key Features
CNC-machined aluminium housing
Anodised black/red and silver/red finishes
Constant velocity driveshaft (three-section CVD)
Reduced jerking at full steering angles
Over 45 degrees of steering
Integrated C-hubs and increased caster
Adjustable upper link mounts
Compatible with SCX10 III components and upgrades
Includes all necessary hardware for installation
Technical Specifications
| Specification | Detail |
|---|---|
| Compatible Model | 1/10 RC Crawler (SCX10 III) |
| Material | Aluminium alloy, carbon steel, stainless steel |
| Total Width | 220 mm (8.66 in) |
| Axle Output Shaft | 5 mm |
| Wheel Hex | 12 mm (standard), 5 mm thick |
| Steering Angle | Approx. 45° |
| Bevel Gear Set | 8T/30T |
| Portal Gear Set | 12T/23T |
| Gear Ratio | 7.19:1 |
| Front Axle Weight | 303 g (10.69 oz) |
| Rear Axle Weight | 216 g (7.62 oz) |
Installation Notes
Best installed on the original SCX10 III chassis using the factory servo rod
When connecting the original transmission shaft, remove the E-clip from the bevel gear
Use appropriately sized or bent links to align with the servo arm
Minor adjustments may be required to gear mesh and suspension geometry
Pros and Cons
Pros
✔️ Superior ground clearance
✔️ Improved steering angle
✔️ Smooth power delivery through CVDs
✔️ Strong and durable construction
✔️ Compatible with multiple SCX10 III upgrades
Cons
❌ Heavier than standard axles
❌ More complex to install and tune
❌ May require link and shaft modifications
Best Use Cases
Rock crawling with high obstacle clearance
Technical trail driving
Scale model upgrades and performance tuning
Custom builds requiring modular component compatibility
Conclusion
The AR45P Offset Portal Axle is a feature-rich and performance-driven upgrade for the SCX10 III. It offers advanced drivability, increased height, and tighter steering controls — essential for demanding off-road conditions. With its durable build and precise fit, it is a smart addition to any serious RC crawler setup.
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