radio compartment. Turn the radio system on and make sure the
servo is traveling in the right direction for low and high throttle. Set
the throttle stick to full low throttle, with the trim lever centered.
Push or pull the throttle cable to close the carburetor on the
engine. Connect the remaining solder link to the throttle servo
output arm. Use a marker pen to mark the cable for cutting, with
sufficient length to fit into the solder links' tube end for the required
solder connection.
Remove the cable and cut it at the mark just made (use a carbide
cut-off wheel for this cut) and reinsert it back into the throttle
housing tube in the face of the firewall. Solder the link in place to
the trimmed end of the cable. Connect the solder link to the servo
output arm and the nylon R/C link to the carburetor throttle arm.
Use the radio to test the throttle action and adjust as needed to
obtain true "low" and "high" throttle movement without any binding.
We prefer to add a little wedge of scrap balsawood to the inside of
the fuselage, where the throttle tubing angles toward the servo, to
support it.
Assemble the wings to the fuselage and set all flight surfaces to
neutral.
In the case of the ailerons this would normally be a
difficult job because of the thickness of the wing panels and the
inability to sight down the trailing edge of each panel to see their
relationship. However, your kit includes a plywood Aileron Position
Guide (APG) that allows independent neutral positioning for each
aileron.
As shown, the APG is simply held against the fuselage side, on top
the wing panel at the trailing edge. The aileron pushrod is then
adjusted to align the aileron parallel with the flat at the rear of the
APG fixture - simple and easy.
After the flight surfaces have been neutralized, take the time to fit
each R/C link with a short length of fuel tubing (medium silicon
tubing is fine for 2-56 hardware) to keep the links firmly in place to
each control horn and servo arm. This common safety practice
has saved a lot of models! Last, make sure that you have secured
the servo arms to each servo with the retaining screws.
WING RETENTION:
The wing system used on this airplane is simple, straight forward,
and very convenient. It is also well proven in actual use. This
system allows the the wings to be removed for transportation,
storage, maintenance, etc. From the kit contents, locate the #64
rubber band. The rubber band is simply hooked to one of the
J-hooks and stretched three (3) times between the two wing
J-hooks. Stretching it more than three times is unnecessary and
stretching it only twice is insufficient.
Periodically inspect the
rubber band for any signs of wear and replace it as needed.
SPINNER ASSEMBLY:
Locate the white SIG spinner assembly from the kit contents. This
spinner is easy to install, lends a great look to your finished
SOMETHIN' EXTRA
®
ARF and is ready for use with APC
propellers! Choose the correct adapter ring for your engine. The
fit should be a nice slip fit over the engine's prop shaft. Slip the
spinner backplate onto the prop shaft and onto the adapter ring.
The propeller is installed next, followed by the nose cone. The
cone is held in place with the provided screws. Be sure to snug
the screws securely in place, but do not over-tighten them.
CONTROL SURACE TRAVEL CHART:
There are any number of different radio systems currently in use
and on the market. Because of this, it is not possible to explain the
optimum set-up for all systems for this particular airplane. The
following suggested control surface travel information is based
on our experience with the SOMETHIN' EXTRA
®
ARF. These
suggested surface movements should be considered as starting
points.
As your experience and confidence builds, control
movements can be adjusted to suit your particular style of flying
and to explore the airplane's capabilities.
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