Servo Specs, Reviews, & Comparison Tool
Expert SL851 - Giant Pro Servo
Specifications
| Last Updated: | 2025-08-06 |
| Modulation: | (add) |
| Torque: |
4.8V: 180.00 oz-in (12.96 kg-cm) |
| Speed: |
4.8V: 0.19 sec/60° |
| Weight: | 4.59 oz (130.0 g) |
| Dimensions: |
Length:2.50 in (63.5 mm) Width:1.36 in (34.5 mm) Height:2.30 in (58.4 mm) |
| Motor Type: | Coreless |
| Gear Type: | Plastic |
| Rotation/Support: | Dual Bearings |
| Rotational Range: | (add) |
| Pulse Cycle: | (add) |
| Pulse Width: | (add) |
| Connector Type: | (add) |
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Notes
- The discontinued Expert SL851 is a premium, giant-scale digital servo designed to provide professional-level performance for the largest and most demanding model aircraft. This servo is engineered to deliver a massive amount of torque with the precision and holding power that only a high-quality digital controller can provide. The SL851 is aimed at top-level competitive pilots flying aircraft in the 35% scale and larger class, particularly in disciplines like IMAC and 3D aerobatics. It has the immense power to move the huge control surfaces of these aircraft with both speed and absolute authority, providing a completely locked-in and secure control feel.
- The essence of the SL851 is its combination of overwhelming power and sophisticated digital control, all built to the high-reliability standards of the Expert brand. For pilots with very large and expensive aircraft, the control system must be beyond question. The SL851 provides this peace of mind, delivering consistent, powerful, and precise performance flight after flight. It is an investment in the safety, performance, and enjoyment of flying giant-scale aircraft at the highest level.
- For the most ambitious, large-scale robotics projects, the Expert SL851 is a premier choice. Its massive digital torque makes it ideal for the most critical load-bearing joints on a human-sized robot, the actuators for a heavy-lifting exoskeleton, or for the control systems on a large, professional unmanned vehicle. It provides the ultimate in power and reliability for projects where failure is not an option."
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