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Catalog > Servos and Parts > Blue Bird Servos > Digital Servos
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BMS-303DD Coreless Digital Sub-Micro Servo
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Item: 1 of 15
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Click on image for larger or alternate view.
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Weight:
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3.8 grams / 0.13 oz.
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Size:
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19 x 7.5 x 15.5 mm / 0.75 x 0.29 x 0.61 in.
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Torque At 4.8V:
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11 oz-in.
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Speed At 4.8V:
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0.11 sec / 60°
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Torque At 6.0V:
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14 oz-in.
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Speed At 6.0V:
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0.09 sec / 60°
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Ball Bearing:
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No
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Metal Gears:
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No
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This servo is a miracle of ultra-sub-micro miniaturization. Made with precision parts machined to high-tolerances, and using efficient ultra-square PWM motor drive signals, these servos are the perfect choice for any sub-micro model application from indoor R/C airplanes to micro helicopters.
The servo will automatically learn the user's transmitter pulse timings and lock into the signal every time. The servo also includes a signal buffer in the CPU with fail-safe functionality. The motor is wound with 2PEW thin coated wire for better electrical conductivity and is able to withstand over 120° C without degradation.
We have received some initial incompatibilities with Castle Creations receivers and these servos. It appears that cold temperatures are part of the cause as the servos work indoors.
Features:
Featuring precision pulse width timing within 2usec pulse width
Carbon plastic potentiometer construction for longer life and better reliability
High performance Japanese 3 pole ferrite motor
High-torque motor with low RF noise (CE certified)
Futaba compatible 25 tooth output splines
Digital motor drive with ultra-square PWM signal
Automatic determination of servo center pulse width
Fail-Safe function
The servo comes with an accessory package and the universal JR/Hitec "S" Connector which is physically and electrically compatible with all major receiver brands sold worldwide. Follow the wiring diagram below. If you hook the servo up incorrectly nothing bad will happen - just flip the S connector around and the servo will work correctly
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"S" Type Connector |
Futaba "J" Connector |
Wire Info |
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Brown Wire |
Black Wire |
Battery Negative |
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Red Wire |
Red Wire |
Battery Positive |
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Orange Wire |
White Wire |
Signal |
WARNING: Using the servo arm to turn the servo motor may cause the gears to break or jump and the servo will stop functioning correctly. This is true for all servos regardless of servo manufacturer. BP Hobbies assumes no responsibility once this kind of damage. This can also occur as a result of crash damage or hard landing. Once you install and use a servo BP Hobbies assumes no responsibility any damages that may occur.
Replacement Parts & Accessories:
BMS-303/303DD Gear Set
BMS-303/303DD/303DMG Accessory Package
BMS-303/303DD/303DMG Outside Case
Manufacturer's Specifications
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Price: $14.62
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Prices, product specifications, and product availability are subject to change without notice.
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© Copyright 1998-2008, 2009 BP Hobbies, LLC. All rights reserved.
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