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Technical Specifications
Last Updated: 2026-07-28| Identity | |
| Brand |  |
| Category | Hobby |
| Discontinued | Yes |
| Performance | |
| Torque |
6.0V
65.10 oz-in
4.69 kg-cm
0.5 N-m
4.8V
48.10 oz-in
3.46 kg-cm
0.3 N-m
|
| Speed |
6.0V
0.05 sec/60°
1,333.3 deg/s
222.2 RPM
4.8V
0.05 sec/60°
1,132.1 deg/s
188.7 RPM
|
| Physical | |
| Weight | 2.15 oz61.0 gAverage |
| Dimensions |
L 1.59 in W 0.83 in H 1.57 in L 40.4 mm W 21.1 mm H 39.9 mm |
| Drivetrain | |
| Gears | Plastic |
| Gear Spline/Teeth | 23 T estimate |
| Rotation/Support | Dual Bearings |
| Control & Signal | |
| Modulation | Digital |
| Connectivity | |
| Connector | JR (Universal) estimate |
Disclaimer: Most data is sourced from the manufacturer. Some data is sourced from our loyal community and with the help of AI. We aim for accuracy but are not responsible for inaccurate information.
Class Comparison
| Weight | Average Lighter than 57% of 1902 Digital Standard servos |
Performance Analysis
| Shaft Power | 1.68–2.67 W |
| Power Density | 1.291 W/in³ More power-dense than 25% of 1759 Digital Standard servos |
| Torque Density | 0.7885 oz-in/g |
| Torque-to-Volume Ratio | 23.22 oz-in/in³ |
| Speed-to-Weight | 0.30931 (1/sec·g) |
| Speed-Torque Trade-off | 2.55 |
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Reviews (1)
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JR 8900G
March 30, 2012Application(s): Tail on 500 Protos and Trex 700E
Comments: I give these a 5 on the basis that as long as you compare with any other 5-6volt servo (apples with apples) you will find it hard to get a better servo.It's Fast .05 on 5 or 6v and It's one of the smoooothest servo's I have ever Had and I've had a few? Hundred!.I still consider it to be a BenchMark product for comparing any other Tail servo for Heli's and It's been so so reliable on FBL and Fast Gyros alike.I love to do ultra rapid Piro's with Big Bang Stops and even though It's got plastic Gear Set they seem to be Unbreakable although I treat my Helis very good and always make sure theres no slop in the Tail.For the money theyr a great deal!.