Servo Specs, Reviews, & Comparison Tool
JR 241 - Sub-Micro Servo: Metal Gear
Specifications
| Last Updated: | 2025-07-31 |
| Modulation: | Analog |
| Torque: |
4.8V: 17.00 oz-in (1.22 kg-cm) |
| Speed: |
4.8V: 0.18 sec/60° |
| Weight: | 0.35 oz (9.9 g) |
| Dimensions: |
Length:0.87 in (22.1 mm) Width:0.45 in (11.4 mm) Height:0.85 in (21.6 mm) |
| Motor Type: | Coreless |
| Gear Type: | Metal |
| Rotation/Support: | (add) |
| Rotational Range: | (add) |
| Pulse Cycle: | (add) |
| Pulse Width: | (add) |
| Connector Type: | JR |
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Notes
- The JR 241, also known as the JR Propo NES-241, and not to be confused with the larger S241, is a discontinued sub-micro servo that has been a popular choice for radio-controlled hobbyists for many years. Weighing a mere 9 grams, the JR 241 was engineered for a variety of lightweight applications. It found a home in small hand-launch gliders, slow flyers, and indoor electric airplanes where every gram counts. Its compact size made it a suitable option for miniature helicopters and even some small-scale R/C cars. The servo was available in both plastic and metal gear versions, with the latter providing increased durability for more demanding applications.
- Over its long production run, it gained a reputation for being a reliable and capable servo for its size. However, as with any component that sees extended use, some users have reported age-related issues. The most common of these is a failure of the internal motor or potentiometer, which can result in a loss of the servo's ability to center accurately.
- For those looking to replace a failing JR 241, it's often recommended to replace them in pairs, especially when used for critical control surfaces like ailerons, to ensure matched performance.