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Features:

 

Mini 9G servo for turnout control, compatible with Digitrax DS78V decoder.

 

Includes compact under layout mount bracket, allowing ~1.8" mount depth.

 

Includes both 0.6mm and 0.8mm z-bend formed actuator drive-wires.

 

Adjustable; slew range with horn arm holes, and angle offset on shaft spline.

 

Includes 5/16" mount screws, actuator horns and servo hardware.

Parts List

1 DSXSV9  9G servo 

 

2 z-bend actuator drive-wire sizes 

1 Instruction Sheet 

 

1 9G Mount, screws and horn arm pack

1.0 Servo Mount Assembly

1.  Place the DSXSV9 servo 

without horn arm

 on the rear side of the mount 

bracket with the wires away from the mount top, as shown in figure 1 . Use 

two larger head 1/4" long screws from horn arm hardware bag to attach 

servo to mount. 

2.  Drive the DSXSV9 to its 

center

 

position by e.g. plugging into a 

powered DS78V in Adjustment 

mode 

centering

 state.  See DS78V 

manual section 2.0.

3.  Poke through the z-bend end of 

e.g. thin 0.6mm drive-wire into 

the outer hole of the short horn 

arm, then place the wire free tip 

through the center pivot hole in 

the plastic mount base, as shown 

in figure 1. 

4.  To mechanically center; align 

horn arm end pointing at the ser-

vo cable on the centerline, then  

gently press horn center onto 

the servo shaft spline. Use the 

DS78V to then confirm that the 

DSXSV9 now has almost sym-

metric Thrown (clockwise or CW) 

and Closed (CCW) angles from 

centerline. In e.g. the Thrown 

position shown, use the small 5/32" long screw to lock the horn arm center 

down to the shaft with this approximate mechanical center position. 

5.  Drive the servo back to centered position, so it is aligned and can be un-

plugged and later installed on the layout with drive-wire centered under the 

turnout throw-bar drive hole, with aid of the base-template. Do not drive the 

horn arm manually, as this will damage gears. For dry indoor use only.

DSXSV9

   

Complete Train Control

 

Run Your Trains, Not Your Track!

drive-wire, up 

to throw-bar 

drive hole

Figure 1.

servo cable, on centerline

upper 

1/4" servo 

mount

 screw tip

9G servo

body, insert 

from mount 

rear side

short horn 

arm: shown 

in servo 

Thrown/CW 

position

horn arm 

retain screw

center pivot hole

z-bend 

through 

outer arm 

hole

Mount top: face 

towards layout 

underside. 4 

mount slots to 

align/attach.

Digitrax 

9G mount 

bracket 

front

 9G Turnout or motion control servo, with 

mount bracket and installation hardware

Clamp holes 

for 

optional

 

remote actu-

ator cables

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