SWB 1.5″ Half Servo Arm 4/40 (Futaba)

$12.00

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SWB 1.5″ Half Servo Arm with tapped 4/40 holes (Futaba)

SWB’s the original aluminum Double-Loc Servo Arm with holes threaded for 4/40

These arms are not only designed to clamp around the output shaft,

but they also make up for any inconsistencies in the output shaft sizes.

Half arms are measured from the servo screw hole to the outside hole.

Full arms are measured from the servo screw hole to the outside hole, 2X

Example” 1-1/4 Full arms are 2-1/2” from outside hole to outside hole..

Tapped 4/40 Hole spacing:

1″ & 1-1/4″ Half arms .11

1-1/2″ & 2′ Half arms .25 (1/4″)

1-1/4″, 1-1/2″ and 2.25 Full arms .25 (1/4″)

Offset arms are designed to be used with a rudder horn of that length and crossing the wires

Example: 3” offset arm is to be used with a 3” rudder horn

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