This is the Futaba S9155 Digital High Torque Metal Gear Servo. with J Connector. Designed for aircraft applications This servo requires high-current draw from batteries. FEATURES: Coreless motor, see COMMENTS Digitally enhanced microprocessors cut in half the response time from transmitter input to servo reaction Center of case is metal Metal gears One year warranty INCLUDES: One S9155 Digital High Torque Servo with J Connector Round servo wheel 1.8" (45mm) diameter Four point servo wheel 1.5" (38.5mm) diameter Six point servo wheel 1.2" (32mm) diameter Four rubber grommets Four metal eyelets Four 2x11mm mounting screws 3x8mm horn set screw SPECS: Speed: 0.16 sec/60° @ 4.8V 0.13.8 sec/60° @ 6.0V Torque: 153 oz-in @ 4.8V (11.0kg/cm) 192 oz-in @ 6.0V (13.8kg/cm) Dimensions: 1.6 x 0.8 x 1.4" (40 x 20 x 37mm) Weight: 2.2oz (61g) Power Supply: 4.8V or 6V COMMENTS: S9155 Digital Servo Precautions, -It is best to avoid long leads and Y-harnesses especially with standard grade wires. If problems are encountered, consider using heavy duty wire such as Futaba"s Heavy Duty Series or Hobbico"s Pro Series, minimizing lead lengths, and/or removing Y-harnesses. -Current Drain: This digital servo is specially designed for high- torque or high-speed, therefore very high current drain is normal at startup. For ultimate performance when using this servo please review the following points. 1. Radio systems with the Battery Fail Safe function have a higher cut-off voltage setting which will cause shorter operation time. 2. When installing the servo, please check pushrod linkage to make sure there is no binding in order to prevent excessive power consumption and decrease the life of the motor and battery. A note on Coreless motors: conventional servo motors have a steel core armature wrapped with wire that spins inside the magnets. In a Coreless design, the armature uses a thin wire mesh that forms a cup that spins around the outside of the magnet eliminating the heavy steel core. This design results in smoother operation and faster response time. This digital servo cannot be used with any AM transmitters including the following Futaba models as the servo neutral signal is: 1310us. CONQUEST AM, FG Series (T4FG, T5FGK,T6FG, T6FGK, T7FGK), New Terra- top, T3EGX, T3PGE, T2NL, T2LGX, T2FR, T2PK series. jxs 6/23/06 ir/jxs updated jpg 3/27/07