The HS-815BB Mega sail arm servo comes with a Heavy Duty 4.9 inch arm commonly used for RC sailboats. With its dual ball bearing supported output shaft the HS-815BB will provide years of reliable service in larger sailboat applications.
The answer to this question is partially dependent on what you are using to control the servo.
Click for a quick video explanation.
With an Average Radio System:
152°
Your average transmitter and receiver will output a relatively narrow PWM signal range.
Radio System + Travel Tuner:
200°
Adding a Servo Travel Tuner to your radio system setup will allow you to achieve wide PWM signal ranges.
Wide Signal Controllers:
200°
Controllers such as the Servo Commander, Arduinos, and Raspberry Pi servo hats can usually send a wide signal.
| Output Shaft Style | D15T Spline |
|---|---|
| Voltage Range | 4.8V - 6.0V |
| No-Load Speed (4.8V) | 0.48sec/140° |
| No-Load Speed (6.0V) | 0.38sec/140° |
| Stall Torque (4.8V) | 274.96 oz-in (19.8 kg.cm) |
| Stall Torque (6.0V) | 343.01 oz-in (24.7 kg.cm) |
| Max PWM Signal Range | 920-2105μsec |
| Travel per µs | .169°/μsec |
| Max Rotation | 200° |
| Pulse Amplitude | 3-5V |
| Operating Temperature | -20°C to +60°C |
| Current Drain - idle (4.8V) | 8mA |
| Current Drain - idle (6.0V) | 8.7mA |
| Current Drain - no-load (4.8V) | 700mA |
| Current Drain - no-load (6V) | 830mA |
| Continuous Rotation Modifiable | Yes |
| Direction w/ Increasing PWM Signal | Clockwise |
| Deadband Width | 8µs |
| Motor Type | 3 Pole Ferrite |
| Feedback Style | 5KΩ Potentiometer |
| Output Shaft Support | Dual Ball Bearings |
| Gear Material | Nylon |
| Wire Length | 11.81" (300mm) |
| Weight | 5.6 oz. (152g) |
| Wire Gauge | 22AWG |
| Servo Size | Large |