Jet Hangar A-7D/E Corsair II, Assembly Instructions Manual

Page: 29 / 66

JHI-A7-06-0001
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38. ‰
Locate the desired throttle servo. Note: This
aircraft requires a mini servo for throttle
capable of 40+ in-oz torque.
‰
Cut two ea. ½”x¼” parts from some scrap ¼”
basswood.
‰
Drill the attachment holes for the servo into
the basswood rails and screw into place on
the servo.
‰
Epoxy the basswood rails onto the outside of
the exhaust duct.
Note: Placement is
approximately 6” back from the leading edge
of the duct centered along the longitudinal
center.
‰
Install an ez-connector onto the servo arm
using a Dubro #108 pushrod and Dubro #190
ball joint.
‰
Cut a slot in the duct to allow the throttle
pushrod to pass through the duct freely.
‰
Determine the necessary length for the push
rod and install the ball joint onto the threaded
end.
‰
Connect the ball joint onto the engine and set
the throttle servo as desired. Tighten the ez-
connector onto the pushrod once satisfied
with the results.
Note: Be careful to avoid making the slot in
the exhaust liner larger than necessary! It
should only be sufficient to pass the pushrod
through! Too large a slot may result in loss of
performance.
39. ‰
Find the supplied tuned pipe hanger pylon
TPH and 2 ea. TPH-A.
‰
Glue the parts TPH-A on either side of the
base of the pylon matching the lower
contours.
‰
Using wax or petroleum jelly as a barrier, tack
glue the pipe hanger assembly in place on
the tuned pipe. Create an epoxy fillet using
epoxy and micro balloons around the mating
surface.
Note: Useful for creating an exact fit
to pipe.
‰
Place the fan unit on the work surface with
the forward exhaust liner attached vertically
and with the fan facing downward.
‰
Remove the rear exhaust liner from the
aircraft and place it onto the forward exhaust
liner.
‰
Place the tuned pipe onto the engine exhaust
with the tuned pipe hanger in place.
‰
Mark the location of the tuned pipe pylon and
cut a 1/8” slot in the duct to receive the tuned
pipe hangar.
‰
Glue the tuned pipe hanger in place in the
exhaust duct using epoxy. Glue scrap 1/8”
square balsa on either side of the pylon on
the outside.
IMPORTANT!
Tuned pipe length should measure 9 ¾”
from the glow plug to the apex of the tuned
pipe. Additional information and diagrams
can be found in Turbax fan instructions.
Epoxy Fillet