Spektrum 1/6 18kg 6v Metal Geared Waterproof Servo S904
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Spektrum 1/6 18kg 6v Metal Geared Waterproof Servo S904
 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.
Spektrum Replacement Digital MG Servo, 6IX
FeaturesPrecise digital control
Durable metal gear set
Dual ball bearings provide less resistance for higher performance and longer life
Z connectors are compatible with JR® and Spektrum™ receivers
Total Height (A) = 64.2mm
Body Width (B) = 60mm
Below Mount (C) = 41mm
Above Mount (D) = 19mm
Total Length (E) = 71mm
Total Width (F) = 28.8mm
Learn how to install a steering servo correctly to increase steering performance, and avoid stripping your servo gears out.
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Height (A)
- 64.2mm
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Body Length (B)
- 60mm
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Bottom to Under Mount (C)
- 41mm
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Top to Under Mount (D)
- 19mm
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Length (E)
- 71mm
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Width (F)
- 28.8mm
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SizeConventionally sized servo names
- 1/5
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Gear Material
- Metal
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Waterproof Casing
- Yes
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Servo Spline Count
- 15Tooth
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6V Torque kg/cmKilograms of torque at 25mm away from the center of the spline
- 18
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6V Sec/60 DegreesSeconds per 60 degrees of rotation
- 0.21
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Signal Type
- Digital
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Case Material
- Plastic
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Rotational Degrees
- 120° (Normal)
