Servo Specs, Reviews, & Comparison Tool
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Make | Model | Modulation | Weight | Dimensions (L×W×H) |
Torque | Speed | Motor Type |
Rotation | Gear Material |
Typical Price |
Compare |
RJX Hobby | BLS0550HV | Digital | 2.54 oz | 1.57×0.79×1.61 in |
7.4V 102.8 oz-in 8.2V 113.9 oz-in |
7.4V 0.04 s/60° 8.2V 0.03 s/60° |
Brushless | (add) | Metal | $209.00 | |
RJX Hobby | BLS0550T | Digital | 2.36 oz | 1.57×0.79×1.46 in |
4.8V 66.7 oz-in 6.0V 83.3 oz-in |
4.8V 0.05 s/60° 6.0V 0.05 s/60° |
Brushless | (add) | Metal | $209.00 | |
RJX Hobby | FS0390HV | Digital | 1.59 oz | 1.42×0.59×1.24 in |
5.0V 69.5 oz-in 6.0V 83.3 oz-in 7.4V 102.8 oz-in |
5.0V 0.06 s/60° 6.0V 0.05 s/60° 7.4V 0.04 s/60° |
Coreless | (add) | Metal | $132.00 | |
RJX Hobby | FS0391HV | Digital | 1.76 oz | 1.42×0.59×1.40 in |
4.8V 66.7 oz-in 6.0V 83.3 oz-in 7.4V 102.8 oz-in 8.2V 113.9 oz-in |
4.8V 0.12 s/60° 6.0V 0.08 s/60° 7.4V 0.07 s/60° 8.2V 0.05 s/60° |
Coreless | (add) | Metal | $132.00 | |
RJX Hobby | FS0391T | Digital | 1.76 oz | 1.42×0.59×1.40 in |
6.0V 83.3 oz-in 7.4V 102.8 oz-in 8.4V 116.7 oz-in |
6.0V 0.04 s/60° 7.4V 0.03 s/60° 8.4V 0.03 s/60° |
Coreless | (add) | Metal | $132.00 | |
Robbe | ARCUS | Digital | 0.88 oz | (add) | (add) | (add) | (add) | (add) | (add) | $23.09 | |
Robbe | ARCUS-E | Digital | 0.32 oz | (add) | (add) | (add) | (add) | (add) | (add) | $16.79 | |
Robbe | FS 500 MG * | Digital | 0.74 oz | 1.18×0.53×1.16 in |
4.8V 34.0 oz-in 6.0V 42.5 oz-in |
4.8V 0.21 s/60° 6.0V 0.17 s/60° |
(add) | (add) | Metal | (add) | |
Robbe | FS 550 BB * | Digital | 0.64 oz | 1.18×0.51×1.24 in |
4.8V 34.7 oz-in 6.0V 41.7 oz-in |
4.8V 0.16 s/60° 6.0V 0.12 s/60° |
(add) | Single Bearing | Plastic | (add) | |
Robbe | FS 550 BB MG * | Digital | 0.75 oz | 1.18×0.51×1.24 in |
4.8V 48.6 oz-in 6.0V 58.3 oz-in |
4.8V 0.21 s/60° 6.0V 0.16 s/60° |
(add) | Single Bearing | Metal | (add) | |
Robbe | FS 550 BB Speed * | Digital | (add) | 1.18×0.51×1.24 in |
4.8V 38.2 oz-in |
4.8V 0.07 s/60° |
(add) | Single Bearing | Plastic | (add) | |
Robbe | FS 555 BB * | Digital | 0.73 oz | 1.18×0.51×1.10 in |
4.8V 34.0 oz-in 6.0V 42.5 oz-in |
4.8V 0.07 s/60° 6.0V 0.05 s/60° |
Coreless | Single Bearing | Plastic | (add) | |
Robbe | FS 555 BB MG * | Digital | 0.74 oz | 1.18×0.51×1.10 in |
4.8V 67.9 oz-in 6.0V 79.3 oz-in |
4.8V 0.15 s/60° 6.0V 0.12 s/60° |
Coreless | Single Bearing | Metal | $75.00 | |
Robbe | FS 61 BB * | Digital | 0.32 oz | 0.91×0.45×0.95 in |
4.8V 20.8 oz-in |
4.8V 0.11 s/60° |
(add) | Single Bearing | (add) | (add) | |
Robbe | FS 61 BB Cool * | Digital | (add) | 0.91×0.45×0.80 in |
4.8V 21.2 oz-in |
4.8V 0.11 s/60° |
(add) | Single Bearing | (add) | (add) | |
Robbe | FS 61 BB MG * | Digital | (add) | 0.91×0.45×0.80 in |
4.8V 28.3 oz-in |
4.8V 0.16 s/60° |
(add) | Single Bearing | Metal | (add) | |
Robbe | FS 61 BB Speed * | Digital | 0.35 oz | 0.91×0.45×0.95 in |
4.8V 12.5 oz-in |
4.8V 0.07 s/60° |
(add) | Single Bearing | (add) | $45.00 | |
Robbe | FS 75 MG * | Digital | 0.71 oz | 1.16×0.47×1.02 in |
4.8V 37.5 oz-in 6.0V 45.8 oz-in |
4.8V 0.16 s/60° 6.0V 0.13 s/60° |
(add) | (add) | Metal | (add) | |
Robbe | FS-122 | Digital | 0.74 oz | 0.98×0.31×1.35 in |
8.4V 91.7 oz-in |
8.4V 0.10 s/60° |
(add) | Dual Bearings | Metal | $52.49 | |
Robbe | FS-124 | Digital | 0.91 oz | 1.18×0.39×0.91 in |
4.8V 75.0 oz-in 6.0V 86.1 oz-in 7.4V 104.2 oz-in 8.4V 118.1 oz-in |
4.8V 0.14 s/60° 6.0V 0.12 s/60° 7.4V 0.10 s/60° 8.4V 0.09 s/60° |
(add) | (add) | Metal | $47.24 | |
Robbe | FS-128 | Digital | 0.92 oz | 1.18×0.39×1.18 in |
8.4V 152.8 oz-in |
8.4V 0.10 s/60° |
(add) | Dual Bearings | Metal | $48.29 | |
Robbe | FS-133 | Digital | 0.19 oz | 0.77×0.31×0.77 in |
4.8V 18.1 oz-in 6.0V 18.1 oz-in 6.6V 18.1 oz-in 8.4V 18.1 oz-in |
4.8V 0.08 s/60° 6.0V 0.08 s/60° 6.6V 0.08 s/60° 8.4V 0.08 s/60° |
(add) | Dual Bearings | Metal | $20.99 | |
Robbe | FS-135X | Digital | 0.24 oz | 0.77×0.31×0.88 in |
6.0V 19.9 oz-in 7.4V 27.1 oz-in 8.4V 30.1 oz-in |
6.0V 0.06 s/60° 7.4V 0.06 s/60° 8.4V 0.05 s/60° |
(add) | (add) | Metal | $34.64 | |
Robbe | FS-138X | Digital | 0.27 oz | 0.79×0.31×0.86 in |
4.8V 26.4 oz-in 6.0V 32.0 oz-in 7.4V 43.1 oz-in 8.4V 47.2 oz-in |
4.8V 0.07 s/60° 6.0V 0.06 s/60° 7.4V 0.05 s/60° 8.4V 0.04 s/60° |
(add) | (add) | Titanium | $36.74 | |
Robbe | FS-141X | Digital | 0.34 oz | 0.79×0.31×0.86 in |
6.0V 43.1 oz-in 7.4V 50.0 oz-in 8.4V 58.3 oz-in |
6.0V 0.06 s/60° 7.4V 0.05 s/60° 8.4V 0.04 s/60° |
(add) | (add) | Steel | $41.99 |