newstartrc PDI-1181MG 18g Digital Servo with Metal Gears for WLtoys and WPL RC Cars, 3.5kg Torque
newstartrc PDI-1181MG 18g Digital Servo with Metal Gears for WLtoys and WPL RC Cars, 3.5kg Torque
The newstartrc PDI-1181MG is a compact digital servo weighing just 17.5 grams, delivering up to 3.5 kg·cm of torque at 6.0V. With metal gears, a 46-tooth spline, and a JR-type connector (180 mm wire), it's built for precise steering and throttle control in smaller RC vehicles. It fits WLtoys 144001, WPL B1/16, B24, C14, C24, and certain helicopters and airplanes.
Technical Details at a Glance
| Model | PDI-1181MG |
| Weight | 17.5 g (0.634 oz) |
| Dimensions | 28 x 13 x 29.7 mm (1.57 x 0.5 x 1.17 in) |
| Operating Voltage | 4.8 – 6.0 V DC |
| Stall Torque (4.8 V) | 3.0 kg·cm |
| Stall Torque (6.0 V) | 3.5 kg·cm |
| Speed (4.8 V) | 0.13 sec/60° |
| Speed (6.0 V) | 0.11 sec/60° |
| Dead Band | 2 μs |
| Working Frequency | 1520 μs / 300 Hz |
| Motor Type | Core motor |
| Gear Material | Metal |
| Gear Teeth | 46T |
| Connector | JR, 180 mm wire |
Which RC Models Does This Servo Fit?
This servo is designed as a direct replacement for the steering servo in several popular RC cars and planes. Compatible models include the WLtoys 144001 buggy, WPL B1/16, B24, C14, and C24 trucks. It also works with certain helicopters and fixed-wing airplanes that accept a standard 18g digital servo with JR connector. Always verify your model's servo dimensions and spline count (46T) before purchase.
Common Questions About the PDI-1181MG
Does it come with mounting hardware?
Yes. The package includes the servo itself plus a set of accessories: a servo mounting kit, plastic servo arm, and screws.
Is this servo compatible with 6V systems?
Yes. It operates from 4.8 to 6.0 V DC. At 6 V it delivers 3.5 kg·cm torque and 0.11 sec/60° speed, making it suitable for high-voltage setups.
What does the 2 μs dead band mean for performance?
A dead band of 2 μs means the servo responds to very small input changes, offering precise control—helpful for fine steering adjustments in RC cars or stable flight in aircraft.
What Comes in the Box
- 1 x newstartrc PDI-1181MG digital servo
- 1 x set of accessories (mounting kit, plastic arm, screws)
With a 4.1-star average from 20 ratings and a top-100 ranking in RC Servos on Amazon, this servo offers reliable performance for hobbyists upgrading or replacing their RC gear.