DES 804 BB Torque Coreless 19.5mm Digital Servo
DES 804 BB Servo

DES 804 BB Torque Coreless 19.5mm Digital Servo

P/N: 7950


Equipped with precision components like ball bearings to increase durability and longevity, the Graupner DES 804 BB Torque Coreless Standard Digital Servo is the ultimate combination of weight, speed and holding power.  The low dead-band technology, high-speed, real-time responses, and Graupner’s exclusive programmable digital circuits makes the DES 804 BB a reliable and excellent performing servo.  Ideal choice for motor and glider models, helicopters and cars.

The DES 804 BB can be specially programmed to meet your unique specifications via the free Graupner Servo Setup Software.


  • Coreless motor
  • Digital servo featuring dynamic torque, excellent speed, superior response and holding torque
  • Programmable Digital Circuit and SMT circuitry
  • 1024 high resolution
  • Supporting 1-16µ depending on programming
  • Covering the wide range of frame rate 20Hz-400Hz
  • 10-bit processing circuit


  • DES 804 BB Standard Digital Servo
  • Horn set

Sport Flyer
Great quality servos! I purchased 4 for a new airplane as I have had karbonite gear servos in the past and they don't wear and get slopy like metal geared servos. The gears are very strong and it usually takes a crash to break one. One thing to be aware of is that if you use 5 cell 6v NiMH battery packs the servo will jitter because a fully charged pack is over 7 volts and a lot of corless motor servos don't work well on the higher voltage. You will need to use a voltage regulator or a 4 cell battery pack as I discovered the the help of the service department at Graupner. I have flown with Graupner radio equipment for about four years now and wouldn't use anything else.
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Reviewed by: (Verified Buyer)  from Littleton Colorado on 3/1/2018