17
the spinner cone using the included 2.5 x 22mm fl at head
machine screw. Confi rm that the spinner backplate does
not contact the fi rewall. If it does, remove the assembly and
back the collet prop adapter away from the fi rewall slightly.
Reinstall the assembly and check the backplate spacing again.
❏
4. Install the wing center section onto the fuselage. Use
the wing joiners to attach the outer panels. You do not need
to tape the panels in place right now. Only when you are
ready to fl y should you tape the outer panels on.
Balance the Model Laterally
❏
1. With the wing level, have an assistant help you lift the
model by the spinner and the bottom of the fuse under the
TE of the fi n. Do this several times.
❏
2. If one wing always drops when you lift the model, it
means that side is heavy. Balance the airplane by adding
weight to the other wing tip.
An airplane that has been
laterally balanced will track better.
Balance the Model (C.G.)
DO NOT OVERLOOK THIS IMPORTANT PROCEDURE.
A model that is not properly balanced may be unstable and
possibly unfl yable.
Forward C.G.
2-3/4" [ 70 mm]
Aft C.G.
4" [102 mm]
Recommended C.G
3 -1/2" [ 89 mm ]
from wing leading edge
❏
1. Mark the C.G location on the underside of the wing at
3-1/2" [ 89 mm ] from the wing’s leading edge.
Recommended C.G
3 -1/2" [ 89 mm ]
from wing leading edge
❏
2. With the plane
ready to fl y
, and with motor batteries
installed, use a Great Planes C.G. Machine or apply narrow
(1/16" [2mm]) strips of tape at the front and rear C.G. locations
so you will be able to feel them when lifting the model with
your fi ngers to check the C.G. location.
Do not at any time
balance the model outside this C.G. range
.
❏
3. First, move the motor battery forward or aft to balance
the plane. If needed, use Great Planes “stick-on” weight
(GPMQ4485) to balance the plane. Place incrementally
increasing amounts of weight on the bottom of the fuselage
over the location where it would be mounted inside until
the model balances. A good place to add stick-on nose
weight is to the side of the battery compartment. Once you
have determined if additional weight needs to be installed,
permanently attach the weight with glue or screws.
❏
4.
IMPORTANT:
If you found it necessary to add any
weight, recheck the C.G. after the weight has been installed.
PREFLIGHT
Identify Your Model
You should always have your name, address, telephone
number and AMA number on or inside your model. It is
required
at all AMA R/C club fl ying sites and AMA sanctioned
fl ying events. Fill out the identifi cation tag on page 20 and
place it on or inside your model. You must also have your
FAA number on your plane and accessible without any tools.
Charge the Batteries
Always charge your transmitter batteries the night before
you go fl ying, and at other times as recommended by the
radio manufacturer.
