SWB Double-Loc Servo Arms

Aluminum Servo Half Arm 1" (25mm)

Aluminum Servo Half Arm 1.25" (32mm)

Aluminum Servo Half Arm 1.5" (37mm)

Aluminum Servo Half Arm 2" (50mm)

Aluminum Servo Full Arm 2.5" (61mm)

Aluminum Servo Full Arm 3" (74mm)

Aluminum Servo Full Arm 4.5" (114mm)

Aluminum Servo Offset Arm 3" (74mm)

Aluminum Servo Offset Arm 3.5" (89mm)

Aluminum Servo Offset Arm 4" (98mm)

New SWB's Double-Loc Servo Arms are designed to clam around and also make up for any inconsistencies in the servo output shafts. All arms are Heavy Duty Red Anodized Aluminum and tapped for 4-40 thread.

Half arms are measured from the servo screw hole to the outside hole.
Full arms are measured from the outside hole to the outside hole.
Offset arms are for pull-pull and do not measure from the outside hole to the outside hole designated length, but the length of rudder horn (See the link!!!).

* Click here for Pull-Pull Wire Explanation!!!

Note: SWB's servo arms should fit snug, and not just slip onto the output shaft. In fact they should go on a about a 1/3 of the way with light pressure and use the screw to pull them down the rest of the way. We do this because we are all after the tightest linkage and if there is any play in the spline fit it will only get worse. If need be, place a drop of light oil in the servo arm hole being very careful not to get any oil in the servo screw hole to help get the arm in place. Remember oil in the servo screw hole will not let the Loctite work properly. We suggest the arms will be installed outside the aircraft and on a stable flat surface.