3D-printed linear motion switch machine. Linear motion helps to overcome some of the issues experienced when using fulcrum-type mounts.

• Keeps forces aligned with the turnout throwbar, This eliminates the side forces created by some fulcrum-type mounts, particularly when the mount holds the servo so that the servo horn is horizontal. The side forces can be especially problematic when the throw wire attaches to the throwbar outside of the rails as with Atlas code 55 N scale turnouts. The linear motion makes it fairly easy to install the mount so that the throwbar does not get pushed sideways towards the headblock ties during motion.
• Eliminates the up/down motion of throw wire while the servo is moving that is typical of fulcrum-type mounts. This means there is less chance of the throw wire catching on switch machine or ground throw details added to the headblock ties. The wire can be trimmed fairly close to the throwbar without concern about it getting pulled out while the turnout is in motion so less chance of catching fingers too!

Maximum travel is about 3/8″.

Throw wire is 0.039″ diameter and extends approximately 2.75″ above the mounting face.

Compact design – overall width and depth 1.25″ x 1.75″ including the servo, and 1.5″ tall.

Comes assembled with HobbyKing HK15178 Servo and SPDT TE/AlcoSwitch 3 Amp rated microswitch. Mounts with two #4 screws (included)

The included 0.039″ throw wire has worked well with the linear motion. You can swap in a longer throw wire with bends for offset mounting or semaphore control if needed. You can also swap in a 0.032″ diameter throw wire if you prefer a more flexible throw wire, but we suggest you try the 0.039″ wire first. Throw wire changeout instructions are here: Throw Wire Changeout The throw wires require a simple “L bend” and you can easily make them yourself if you want to change them out.

Real TowerPro SG-90 Servo, not some cheap knock-off.

Servo Extension and “Y” Cables

Basic servo extension cable. Male connector on one end and female connector on the other. 3-wire 26AWG cable. Works with servos and fascia controllers. Sold in a set of 10.

Basic servo extension cable. Male connector on one end and female connector on the other. 3-wire 26AWG cable. Works with servos and fascia controllers. Sold in a set of 10. Note – will ship either 90cm or 100cm cables based on current stock.

“Y” servo extension cable. Female connector on one end and two male connectors on the other. 3-wire 26AWG cable. Works with servos and fascia controllers. Sold in a set of 10.

“Half” servo extension cable. Male connector on one end and open wires on the other end. 3-wire 26AWG cable. Solder the open end wires to stall motors, pushbuttons, LEDs, etc then add standard extension cables as needed. Sold in a set of 10.

Provides four “Y” connections for one QuadLN_S I/O Port. This is an effective alternative to using “Y” cables when you want to split into two cable runs right at the QuadLN_S. Comes with standoff and mounting screw.