Servo selection: torque, speed, gears and voltage
How to select servos for trainers, sport aircraft, large models, cars and boats without under-sizing a control surface.
S681 Torque Servo, Brass Gears, 25T
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Contact RC-MODEL for current availability, technical fit, compatible accessories and a formal quote.
S681 Torque Servo, Brass Gears, 25T is a Spektrum product intended for surface RC vehicles, crawlers, bashers and race setups that need dependable Spektrum control electronics. This page presents the practical buying information a customer needs before ordering: fit, SKU, image, category, specifications and usage advantages.
The content is written for purchasing through RC-MODEL, without supplier prices or links to competing stores.
Key Advantages
- Organized under the Spektrum servo range.
- Intended for surface RC vehicles, crawlers, bashers and race setups that need dependable Spektrum control electronics.
- Check model fit, connector type, voltage range and Spektrum protocol compatibility before ordering.
- Includes local product imagery and structured specifications for easier comparison inside RC-MODEL.
Core Specifications
- Manufacturer: Spektrum
- Brand: Spektrum
- Product Code: SPMS681
- Product Family: Spektrum servo range
- Application: surface RC vehicles, crawlers, bashers and race setups that need dependable Spektrum control electronics
- Compatibility Focus: Check model fit, connector type, voltage range and Spektrum protocol compatibility before ordering.
- Spektrum Category: Cars & Trucks / Radio Systems / Servos
- Maximum Servo Speed: @6v 0.11, @7.4v 0.10, @8.4v 0.10
- Product Height: 1.57" (40 mm)
- Product Length: 1.58" (40 mm)
- Product Width: 0.79" (20 mm)
- Servo Size Category: Standard
- Spline Count: 25 - Tooth
- Torque: @6v 100oz-in (7.2kg-cm), @7.4v 120oz-in (8.6kg-cm), @8.4v (9.3kg-cm)
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| Technical Specifications | |
| Manufacturer | Spektrum |
| Brand | Spektrum |
| Product Code | SPMS681 |
| Spektrum Category | Cars & Trucks / Radio Systems / Servos |
| Product Family | Spektrum servo range |
| Application | surface RC vehicles, crawlers, bashers and race setups that need dependable Spektrum control electronics |
| Compatibility Focus | Check model fit, connector type, voltage range and Spektrum protocol compatibility before ordering. |
| Product Height | 1.57" (40 mm) |
| Product Length | 1.58" (40 mm) |
| Product Width | 0.79" (20 mm) |
| Servo Size Category | Standard |
| Spline Count | 25 - Tooth |
| Torque | @6v 100oz-in (7.2kg-cm), @7.4v 120oz-in (8.6kg-cm), @8.4v (9.3kg-cm) |
| Maximum Servo Speed | @6v 0.11, @7.4v 0.10, @8.4v 0.10 |
Tags: Spektrum, SPMS681, Spektrum servo range, Spektrum Catalog, Spektrum Servos, Spektrum Standard Servos, Spektrum Surface Electronics, RC-MODEL