Servo Linear Actuator (95-137mm) v1

thingiverse

Servo linear actuator engineered to surround Emax ES08MAII. Fitted for other micro 9g servo models as well. Actuator length range spans from 95-137mm between M3 mount holes. The servo arm measures 25mm and the linkage is 50mm in length. Subtract 92.03mm from actuator distance to calculate servo angle, with an equation below derived where servo angle 0° represents a straight down (retract) position and 180° signifies a straight up (extend) motion with a designated angle limit of 30°-150°. The base frame and the retainer are joined together via glue, with the actuator rod assembled. The rod was printed Z-up, resulting in a weaker structure than desired; hence, it's recommended to print it flat on the bed next time for added strength. This design is considered rough and will be revised in the future. Servo Angle = 180° - Degrees(ACos(((Act. Length - Act. Ext.)^2 + Servo Arm^2 - Servo Link^2) / (2 x (Act. Length - Act. Ext.) x Servo Arm))) Servo Angle = 30° - 150° Act. Length = Actuator Length: 95-137mm Act, Ext = Actuator Extension: 92.03mm Servo Arm = 25mm Servo Link = 50mm Best Regards