HobbyKing™ Mi Digital Brushless Magnetic Induction Servo HV/MG 57g/16.80kg/0.16
The HK Mi Series servos represent the next break through in high precision servo technology. Using Magnetic Induction rather than a potentiometer, they offer an unsurpassed level of accuracy and performance, the Mi Brushless series also use low drain brushless motors for extended motor life and therefore reliability, finally HV operating voltages means this servo can operate directly from a 2s Lipoly Battery, eliminating the need for voltage reduction devices like UBECs and Regulators for extra peace of mind.
Specs: Voltage: 6.0v / 7.4v Speed: 0.19sec/60deg (6.0v) - 0.16sec/60deg (7.4v) Torque: 13.00kg.cm (6.0v) - 16.80kg.cm (7.4v) Size: 40mm x 20mm x 37.5mm Weight: 56.7g Gear Train: Full Titanium Alloy Motor: Brushless Casing: Alloy Heatsink Centre Ball Bearing: 3 Lead: 300mm HD with Universal/JR Plug
Mi : Magnetic Induction, uses a Magnetic Rotary Encoder in place of a traditional potentiometer (invented in 1877). Magnetic Rotary encoders have a longer life and suffer less wear.
Don't run these at over 280hz, the digital amplifier can handle the frequency (as per the specs on blue Arrow's website) but the servo's heat dissipation isn't enough to get rid of the excess heat and it will cook itself to death, especially if used on a gyro. Stay at 250hz and it's a good servo.