Linear long throw servos are essential for precise control in micro and ultra micro RC aircraft and other compact models. This guide highlights high-precision options from Spektrum, showcasing long-throw capabilities, compact footprints, and reliable actuation. Use the accompanying buying guide to compare key features and choose the right servo for your specific application.
| Product | Brand | Key Feature |
|---|---|---|
| Spektrum A201 2.3g Long-Throw Linear Servo, SPMSA201 | Spektrum | 2.3 g, long throw, linear servo |
| Spektrum SPMSH2045L 2.9g Linear Long Throw Servo: 130 S | Spektrum | 2.9 g, 130 S, long throw |
| Spektrum A202 2.9g Long-Throw Linear Servo, SPMSA202 | Spektrum | 2.9 g, long throw |
| Spektrum A201 2.3g Long-Throw Linear Servo, SPMSA200 | Spektrum | 2.3 g, long throw |
| Spektrum 2.3-Gram Linear Long Throw Offset Servo | Spektrum | Offset for built-in differential on ultra micro models |
Spektrum A201 2.3g Long-Throw SPMSA201
The Spektrum A201 series provides compact, lightweight linear control with a 2.3 g profile. Intended for micro to ultra micro applications, this servo offers a precise long-throw stroke suitable for rudder or control surface adjustments in small RC models. Its small footprint helps preserve interior space while delivering reliable actuation over repeated cycles.
Spektrum SPMSH2045L 2.9g Linear Long Throw Servo: 130 S
With a 2.9 g class and a 130 S speed rating, the SPMSH2045L emphasizes a balance of speed and torque in a linear long-throw design. This servo is well-suited for control surfaces on mid-sized micro aircraft, offering stable performance with precise positioning and reduced slop over extended operation.
Spektrum A202 2.9g Long-Throw SPMSA202
The A202 offers a slightly higher weight class at 2.9 g, enabling greater throw while maintaining compact dimensions. This servo is appropriate for micro to small RC airplanes and has characteristics that favor crisp, linear control across its travel range, with dependable repeatability for hobbyist builds and repairs.
Spektrum A201 2.3g Long-Throw SPMSA200
This variant mirrors the lightweight 2.3 g class with a long-throw profile, designed for minimal mass while delivering reliable linear motion. It is suitable for ultra micro configurations where weight savings are critical and precise throw is necessary for fine control surfaces or linkages.
Spektrum 2.3-Gram Linear Long Throw Offset Servo
This offset servo model is tailored for ultra micro models, offering built-in differential through its offset configuration. It enables simpler linkages for ailerons or other surfaces where differential movement improves control authority, making it a preferred choice for advanced micro builds requiring nuanced responses.
Spektrum S2000 Ultra-Micro Analog 1.9g Linear Long Throw Servo
The S2000 series emphasizes a very small footprint with a JST-SHR connector and two ball bearings, delivering reliable micro-scale control with a focus on smooth linear throw. This option suits ultra micro platforms that demand compact form factors and consistent performance across flight cycles.
Spektrum 2.9g Linear Long Throw Servo
Designed for AS3X ultra micro helicopters and similar platforms, this 2.9 g linear long-throw servo combines compactness with a robust throw. A 13.5 mm servo throw supports precise blade and surface control in tight spaces, making it a practical choice for fast, responsive models.
Spektrum 2.9g Linear Long Throw Linear Servo/ 330m Wire SPMSH2040LW
This model pairs a 2.9 g class with a long throw and a 330 mm wire lead, offering flexible installation in models where wiring length matters for routing or servo placement. Its linear actuation makes it suitable for precise control tasks in compact aircraft or other small-scale projects.
Buying Guide: Key Considerations When Choosing a Linear Long Throw Servo
- Weight and size: Match servo mass to the aircraft’s weight budget and available space. Lighter servos reduce overall weight, while compact footprints enable installation in tight interiors.
- Throw and travel range: Long-throw servos provide more surface movement. Ensure the throw aligns with your control surface geometry and linkage design for predictable response.
- Torque and speed: Balance speed with torque to achieve the required response without stalling or jitter at mid-stroke. Consider the load from control surfaces and linkages.
- Electrical considerations: Check connector type, wire length, and voltage compatibility with your RC receiver and power system. JST-SHR and other common connectors ensure compatibility with micro platforms.
- Mounting and durability: Look for robust build, bearing arrangements, and compatibility with ultra micro or micro airframes. Two-ball bearings and high-quality housings contribute to longevity.
- Offset and differential options: Some models offer offset throws to enable built-in differential, improving yaw or roll performance in micro aircraft.
- Wiring length and routing: Longer wires (e.g., 330 mm) provide flexibility in layout but may require careful routing to prevent interference or damage during flight.
- Compatibility with AS3X and micro heli systems: If integrating with AS3X or specialized micro heli setups, ensure servo characteristics align with stabilization systems.
When selecting a linear long throw servo, consider your model type, control surface size, and the required precision. The options listed here from Spektrum cover a range of weights (from 1.9 g to 2.9 g), throws, and configurations to suit ultracompact to small RC aircraft, as well as offset models for differential control in micro builds.