How to assemble an ARF RC aircraft step by step
A general ARF assembly workflow for many aircraft: dry fit, hinges, servo installation, power setup, CG, control checks and first-flight preparation.
2.9g Linear Servo
Prices are intentionally not displayed on the site.
Contact RC-MODEL for current availability, technical fit, compatible accessories and a formal quote.
2.9g Linear Servo is a Spektrum product intended for aircraft, helicopter, sailplane or multirotor radio installations where reliable control and setup clarity matter. 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 aircraft, helicopter, sailplane or multirotor radio installations where reliable control and setup clarity matter.
- 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: SPMSH2040T
- Product Family: Spektrum servo range
- Application: Heli
- Compatibility Focus: Check model fit, connector type, voltage range and Spektrum protocol compatibility before ordering.
- Spektrum Category: Radios / Aircraft / Servos
- Input Voltage: 3.2V-4.2V
- Motor Type: Brushed
- Gear Type: Nylon
- Bearing: Single
- Bushing Or Bearing: Bearing
- Connector Type: JST-SHR 1.0 mm
- Connector Wire Length: 4.52" (115 mm)
Relevant RC Academy guides
Learn before you buy
These guides explain the setup, safety checks and accessory choices that usually matter for this product type.
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.
How to balance an RC aircraft and find the correct CG
One of the most important setup guides: find the CG, install the flight battery, balance the aircraft and avoid nose-heavy or tail-heavy surprises.
Mandatory pre-flight checks for safer RC flying
A repeatable inspection routine for control direction, radio range, failsafe, battery, fasteners, propeller, CG and field readiness.
How to perform the first test flight of an RC aircraft
Ground checks, takeoff planning, trim passes, battery timing and first landing strategy for a new or repaired RC aircraft.
| Technical Specifications | |
| Manufacturer | Spektrum |
| Brand | Spektrum |
| Product Code | SPMSH2040T |
| Spektrum Category | Radios / Aircraft / Servos |
| Connector Type | JST-SHR 1.0 mm |
| Product Family | Spektrum servo range |
| Application | Heli |
| Compatibility Focus | Check model fit, connector type, voltage range and Spektrum protocol compatibility before ordering. |
| Input Voltage | 3.2V-4.2V |
| Product Height | 0.4" (10 mm) |
| Product Length | 0.9" (23 mm) |
| Product Weight | 0.10 oz (2.90 g) |
| Product Width | 0.7" (18 mm) |
| Programmable | Yes |
| Bearing | Single |
| Gear Type | Nylon |
| Servo Operating Voltage | 3.2 - 4.2V |
| Servo Size Category | Ultra Micro |
| Servo Type | Analog |
| Motor Type | Brushed |
| Water-Resistant | No |
| Product Application | Air |
| Part Type | Electronics |
| Connector Wire Length | 4.52" (115 mm) |
| Maximum Servo Speed | 0.065 @ 4.2V |
| Bushing Or Bearing | Bearing |
| Maximum Servo Torque | 9.6 oz/in @ 4.2V |
Tags: Spektrum, SPMSH2040T, Spektrum servo range, Spektrum Catalog, Spektrum Servos, Spektrum Standard Servos, Spektrum Aircraft Electronics, RC-MODEL