S8955SS It responds to gyros quickly, it is the best for jet’s aileron as well as 3D giant scale airplane’s aileron.  You'd love the speed of the servo once you feel it
【Giant Scale－AILERON SERVO】
Stall torque:   34.2 (6.6V) / 38.3 (7.4V) / 43.5 (8.4V) kg · cm
                          474.7 (6.6V) / 532.2 (7.4V) / 604.1 (8.4V) oz
Speed : 0.06 (6.6V) /0.06 (7.4V) /0.05 (8.4V) Sec / 60 °
Weight: 79 g / 2.79 oz Lead length : 300mm
Operating voltage: 4.5V – 8.5V
Operating angle: 120 ° / 150° / 180 °
Programmable
Recommend for giant scale ailerons .Jet- Good response to jets.
 
The firmware in a 2k servo verifies the position of the servo arm two thousand times each second, 
while the firmware found in previous servos verify the arm's position one thousand times per second.
This greater number of verifications makes for a very precise servo, and gives it a more "solid" feel.
It is recommended to use a booster cable with 2k servos to ensure steady voltage at all times.
■programmable Neutral, endpoint,gain etc(Works with PWM XBUS)120°150°180°(Works with PWM XBUS)Synchronize(Works with PWM XBUS)
■Super steel full metal gear(Gear B brass)
■Wide voltage
■BIG upper ball bearing (12x6) bottom(10x6)
■Special design Brushless motor