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Manufacturers > Blue Bird
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BMS-825DMG+HS High-Performance Metal Gear Digital Servo With Heat Sink For Helicopters and EP Cars - SALE PRICE
Item: 86 of 90  

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  Weight:     45 grams / 1.60 oz.  
  Size:     40.5 x 20 x 37 mm / 1.60 x 0.78 x 1.52 in.  
  Torque At 4.8V:     N/A  
  Speed At 4.8V:     N/A  
  Torque At 6.0V:     84 oz-in.  
  Speed At 6.0V:     0.09 sec / 60°  
  Ball Bearing:     Dual  
  Metal Gears:     Yes  
The servo is designed for the ultimate in efficiency and performance. A new coreless motor is able to be responsive at low current but still maintain a 0.820 gcm2 mechanical time constant. With an ultra-square digital motor drive signal, the motor runs with an efficiency of at least 79.4% for longer life. And an integral heat sink keeps the motor cool and running at full power even during long-duration competition use.

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.

  • Carbon nylon pinion gear with smooth curvature
  • Double M9.6 ball bearing (si-oil)
  • 3 pole high-torque motor with low RF noise (CE certified)
  • Rubber seals for waterproof case
  • Futaba compatible 25 tooth output splines
  • Heavy duty servo case
  • Integral heat sink
  • Digital motor drive with ultra-square PWM signal
  • Automatic determination of servo center pulse width
  • Metal gears of aluminum 6061 material combined with light and strong C95 material
  • Fail-Safe function
  • 2PEW coated motor wire for high-temperature use
  • Digital control IC - SOP package with 12bit data transfer
  • MOS-FET motor driver chips that can handle 7A peak loads

  • 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.

      "S" Type Connector    Futaba "J" Connector    Wire Info 

    Brown Wire

    Black Wire

      Battery Negative 

    Red Wire

    Red Wire

      Battery Positive 

    Orange Wire

    White Wire


    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-811DMG/821DMG/825DMG Metal Gear Set
  • BMS-8xxDMG Outside Case
  • BMS-8xxDMG Horn and Accessory Set

  • Manufacturer's Specifications
    Price: $65.00
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    Prices, product specifications, and product availability are subject to change without notice.
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