Install The Nose Steering; Balance The Airplane Laterally - GREAT PLANES Profile 38 Instruction Manual

9. Make an L-bend at the mark and attach the throttle
pushrod to the throttle servo arm with a Faslink.
10. Move the throttle stick, checking the linkage to make
sure it does not bind anywhere. Check that both throttles are
adjusted the same. Once the airplane is completed and
ready to fly, you may need to make small adjustments to the
pushrods so that both engines operate the same.

Install the Nose Steering

1. Install the nose steering servo as shown on the fuse plan.
2. Insert the nose gear in the nose gear bearings. Make
sure it rotates smoothly. The canopy bottom will require
trimming to allow the nose gear to fit in the bearings.
3. Trim off the outer two holes on the nylon steering arm.
Insert a 5/32" [4mm] wheel collar in the steering arm and
secure it with a 6-32 x 1/4" [6mm] socket head cap screw.
4. Insert a 6-32 set screw into a second 5/32" [4mm]
wheel collar.
5. Slide the steering arm on the nose gear and insert the
nose gear in the bottom nose gear bearing. Install the 5/32"
[4mm] wheel collar between the servo tray and the nose
gear bearing while sliding the nose gear through the wheel
collar and into the top nose gear bearing. The coil on the
nose gear should be approximately 1/4" [6mm] from the
bottom canopy.
6. Rotate the nose gear so the axle is perpendicular to
the centerline of the wing. Offset the steering arm 3 or 4
degrees towards the steering servo and mark the location of
the steering arm on the nose gear. Remove the nose gear and
file a flat at the steering arm location. Reinstall the nose gear.
7. Thread a nylon clevis approximately 14 full turns onto
the threaded end of a 2-56 x 4" [102mm] pushrod. Slide a
silicone clevis retainer over the clevis. Attach the clevises to
the steering arm.
8. Plug the steering servo into the receiver and center the
steering servo. The servo can also be connected to the
rudder servo with a Y-harness. Position the nose gear axle
perpendicular to the centerline of the wing. Mark the
steering pushrod where it crosses the steering servo arm.
Make an L-bend at the mark and attach the pushrod to the
servo arm with a Faslink.
9. Test fit the bottom canopy over the servo tray, trimming
a cutout for the nose gear.

Balance the Airplane Laterally

SPECIAL NOTE: Do not confuse this procedure with
"checking the C.G." or "balancing the airplane fore and
aft." That very important step will be covered later in
the manual.
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