Segun el fabricante para Helis glow solo hasta tamaño 30, asin que olvidalos.
DS821 Sport Hi-Torque Digital Servo Product 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"x1.50"x1.47"
Weight: 1.5 oz
Bearing: Single Ball Bearing
Motor Type: 3-pole ferrite
Gears: Composite
Application: Standard size-digital servo upgrade for sport pilots
TheDS821 servo is a powerful, accurate sport digital servo recommended forRC airplane applications up to 1.20-size. For helicopters, the DS821operates best with 30-size glow models, and up to 50-size electric.