ASSEMBLY MANUAL: Glasair SII / III
of the fuselage. Thus, this manual is going to show the construction of pushrods for
the elevator and rudder using 4-40 rod ends affixed to
3
/
8
” dowel rods
Rudder Pushrod
Elevator Pushrod
1. We want the linkages to overhang past the dowel by about 150mm (6”). We also
want the linkages to be anchored in holes at
least 30mm to 40mm (1.2” to 1.6”) from the end
of the dowel rod. Thus start by bending all the
linkage rods as shown. The rudder and one of
the elevator links should be about 180mm (7”)
from the pin to the bend, the second elevator
rod should be about 10mm (
3
/
8
”) longer. Drill
holes in the dowel rods to suit. Use Medium CA
to affix the metal links to the wood dowels, then
secure the joint using heat shrink tubing or heavy duty sewing thread
Elevator & Rudder Pushrods Assembled
75mm
(3”) wide
Approx 650mm (25.6”) pin to pin
150mm (6”) overhang
Approx 645mm (25.4”) pin to pin
120mm (4.7”)
to bend
2. The elevator and rudder pushrods need to be configured as shown in the picture to
fit & function properly. The Rudder pushrod simply needs to be about 650mm
(25.6”) measured from pin to pin on the
clevis. The pushrod shown also had
some small Z-bends to improve the fit –
there is no way to predict exactly what if
any bends will re required –- just make
sure the pushrod slides freely without
interfering with the elevator rod - final
adjustments are made with the servo arm
and rudder centered.
Rudder Pushrod Completed
3. Follow along with the picture. The two
links at the output end of the elevator
pushrod must be bent to form a “Y” as
shown. The wire with clevis should overhang the
end of the wood dowel by about 150mm (6”). The
rod ends need to be equally bent so that about
120mm from the end of the dowel they reach a width
of 75mm (3”) The ends of the rods need to be bent
back to parellel, maintaning the 75mm (3” dimension.
The overall length of the rod is about 645mm (25.4”)
pin to pin - final adjustments are made with the servo
arm and elevators centered.
Rudder Pushrod
Elevator Pushrod
Servo Ends of Rods
Rudder Pushrod Completed
4. The Horizontal stabilzer is symetrical and technically can be installed with either
side up. However, it looks better if the covering seam is out of view. Thus
examine the stabilizer along the leading edge and determine where the covering
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