DS821 Sport Hi-Torque Digital Servo
Key Features
- Lower price point, but higher performance value
- New, longer-lasting plastic gear material
- Same size as standard servo
- Ball bearing-supported output shaft
Specs
- Size Category: Standard
- Type: Digital
- Torque: 72 oz/in @ 4.8v, 88 oz/in @6v
- Speed: .19 sec/60 deg @ 4.8v, .15 sec/60 deg @ 6v
- Length: 1.50 in
- Width: 0.74 in
- Height: 1.47 in
- Weight: 1.5 oz
- Bushing Or Bearing: Bearing
- Bearing: Single
- Motor Type: 3-pole ferrite
- Gear Type: Nylon
- Gear Material: Composite
- Application: Standard size-digital servo upgrade for sport
pilots
Tech Notes
The DS821 servo is a powerful, accurate sport digital servo recommended for RC airplane applications up to 1.20-size. For helicopters, the DS821 operates best with 30-size glow models, and up to 50-size electric. Loads and vibration in larger models may cause premature failure of the servo resulting in damage or injury to property and persons.
Important: Do not use liquid thread lock with the DS821 servo!
Do not use any form of liquid thread lock to secure the servo arm screw to the output shaft of the DS821 servo. Chemicals in these liquids react with the polycarbonate gear set causing the plastic to become brittle, fracturing the final output gear.