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Spektrum DS821 Sport Hi-Torque Digital Servo
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Spektrum’s latest Sport Digital design, the DS821, features a 40% increase in torque (72 oz/in) and a longer-lasting new gear train.
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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. |
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- Features:
- Lower price point, but higher performance value
- New, longer-lasting plastic gear material
- Same size as standard servo
- Ball bearing-supported output shaft
- Specifications:
- Type: Digital Hi-Torque
- Torque: 72 oz/in @ 4.8v, 88 oz/in @6v
- Speed: .19 sec/60 deg @ 4.8v, .15 sec/60 deg @ 6v
- Dimensions (WxLxH): 0.74 x 1.50 x 1.47 inches
- Weight: 1.5 oz
- Bearing: Single Ball Bearing
- Motor Type: 3-pole ferrite
- Gears: Composite
- Application: Standard size-digital servo upgrade for sport pilots
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Retract Servo JR/Hitec
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Retracts
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This servo comes with a servo accessory package and is made with a heavy duty servo case. This servo comes with JR/Hitec S Connector also known as a Universal Connector. Some of the BMS-620 servos in our current shipment may come with black-red-white wire even though the servo has a JR/Hitec S connector. |
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- Weight: 34 grams / 1.19 oz.
- Size: 42 x 21.5 x 22 mm / 1.65 x 0.85 x 0.87 in.
- Torque At 4.8V: 85 oz.in.
- Speed At 4.8V: 0.31 sec / 180 deg
- Ball Bearing: Dual
- Metal Gears: Yes
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High Performance Coreless Blue Bird Servos
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All Micro Helis
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The coreless motor powered servo is a much more responsive servo with higher efficiency than standard motored servos. The BMS 303 is a very high performance inexpensive servo and we recommend it for most Micro Helis ranging from Piccolos Hornets Zooms Trex and others. Will work with both Futaba and JR Micro receivers. |
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- Weight: 4.1 grams / 0.14 oz
- Size: 15.5 x 7.5 x 19 mm
- Torque At 4.8V: 10 oz.in.
- Speed At 4.8V: 0.11 sec / 60 deg
- Torque At 6.0V: N/A
- Speed At 6.0V: N/A
- Ball Bearing: No
- Metal Gears: No
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High Performance Blue Bird Servos
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All Micro Helis
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High Performance inexpensive servo. Perfect for Micro Helis. Will work with both Futaba and JR Micro receivers.
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- Torque: 4.8V / 0.8Kg-cm 12oz-in
- Weight: 6g / 0.21oz
- Speed 4.8v / 0.11 sec / 60
- Size: 22 x 10 x 23 mm
- Size: 0.86 x 0.4 x 0.9
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Ball Bearing Sub-Micro Servo
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All Micro Helis
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High Performance Micro servo. Perfect for Micro Helis. Will work with both Futaba and JR Micro receivers. |
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- Weight:6.6 Grams / 0.23 oz (with wire)
- Size:22 x 10 x 23 mm / 0.86 x 0.4 x 0.9 in.
- Torque At 4.8V:12 oz.in.
- Speed At 4.8V:0.10 sec / 60 deg
- Torque At 6.0V:N/A
- Speed At 6.0V:N/A
- Ball Bearing:Yes
- Metal Gears:No
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