Spektrum SPMS651 Standard 7kg 7.2V Metal Geared Waterproof Servo
Part no. SPMS651
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Overview
The Spektrum S651 7kg Servo offers 15% more torque than the previous ADS-7M servo.
Note
Servos are powered by the ESC's output to the receiver. If you're using a higher-strength servo than the ESC can support (usually greater than 20kg), you may experience 'brown-outs' where the radio signal can be interrupted and cause erratic driving. This can be helped by plugging a Glitch Buster into the receiver smoothing the current delivery. However, in some cases, you may need to install an external BEC.
In the box
- 1x Standard SPMS651 7kg 7.2V Steel/Brass Geared Servo
Specifications
| Dimensions | |
| Total Height (A) | 43mm |
| Body Width (B) | 40.5mm |
| Below Mount (C) | 25mm |
| Above Mount (D) | 18mm |
| Total Length (E) | 54mm |
| Total Width (F) | 20mm |
| Electrical & Mechanical | |
| Gear Material | Brass |
| Speed | 0.143s @ 6V / 0.122s @ 7.2V |
| Torque | 6.37kg @ 6V / 7.42kg @ 7.2V |
| Voltage | 6V / 7.2V |
| Waterproof | Yes |
| Spline Count | 23T |
Servo

| Size | Standard |
|---|---|
| Gear Material | Steel & Brass |
| Servo Spline Count | 23Tooth |
| Waterproof Casing | Yes |
| Input Voltage Range | 6V |
| Case Material | Plastic |
| Height (A) | 43mm |
| Body Length (B) | 40.5mm |
| Bottom to Under Mount (C) | 25mm |
| Top to Under Mount (D) | 18mm |
| Length (E) | 54mm |
| Width (F) | 20mm |
| Rotational Degrees | 120° (Normal) |
| 6V Torque kg/cm | 7 |
| 6V Sec/60 Degrees | 0.143 |
| Signal Type | Digital |
Compatibility
Fits 13 ARRMA models
Fits 4 Axial models
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