Great Planes Giant Extra 330L Kit - GPMA0250 - Manual (Page 25)

❏ ❏ 59. Shape the leading edge to transition between the
templates provided. Note: There is one template for the root
which is fairly wide and blunt. This should be used for the
root of this wing in all cases. Use the appropriate tip
template for your style of flying. If you plan to utilize the
model for aerobatics competition and wish for maximum
snap performance, use the smaller, sharper tip template. If
you plan to utilize this model for sport flying only and desire
an airplane which is slightly less “snappy” and less prone to
tip stall, utilize the larger, wider tip template.
❏ ❏ 60. Using your razor saw, cut the aileron from the wing.
Sand the remaining rib pieces flush with the wing’s TE web and
the aft center sheeting flush with R3. Sand everything flush
with the leading edge of the aileron spars. Sand the sheeting
flush with the inboard and outboard ends of the aileron.
❏ ❏ 61. From a 1/2" x 3/4" x 36" balsa stick, cut ten 3" long
hinge blocks.
❏ ❏ 62. Carefully fit and glue five hinge blocks between the
TE spars of the wing and flush against the leading edge of
the TE web as shown on the plan.
❏ ❏ 63. Fit and glue the remaining 5 hinge blocks between
the aileron spars as shown on the plan, being sure they are
flush with the leading edge of the aileron spars and glued
firmly to the aileron spars. Note: The hinge block positioned
on top of the control horn support must be trimmed to
snugly fit against the control horn support AND both spars.
❏ ❏ 64. Glue a 1/2" x 1-1/4" x 42" balsa stick, the aileron
leading edge, to the leading edge of the aileron spars.
Sand the aileron leading edge flush with the aileron end cap
and R14.
❏ ❏ 65. Sand the top and bottom of the aileron leading
edge to the shape of the aileron sheeting.
❏ ❏ 66. Sand a V shape onto the aileron leading edge as
shown on the plan.
❏ ❏ 67. Using giant scale hinges (not provided), hinge BUT
DO NOT GLUE the aileron to the wing as you did the
elevators to the stab halves.
Sit back and relax! Take a look at your great work! Go
ahead, pick it up. Incredible how light, yet rigid, the structure
is, isn’t it? Just wait until you fly it!
❏ 68. If this is the first time through, go back to step one of
Build the Wing Panels and build the left wing half.
❏ 1. Use the formula below to calculate your box lengths.
Measure the length of your engine from the back of the
thrust washer to the back of the mounting plate. Subtract
this engine length from 13-3/8", determining the left firewall
box length. Subtract 1/4" from left firewall length to
determine the right firewall box length.
Hint: For example, if the engine is 6-3/4" long, the left
firewall box length is13-3/8" - 6-3/4" = 6-5/8" and the right
firewall box length is 6-5/8 - 2/8" = 6-3/8".
Calculate Left firewall box length:
13-3/8"
less Engine Length: - _________"
Left firewall box length = _________"
Calculate Right firewall box length:
“Left firewall box length: "
less 1/4" - 1/4"
Right Firewall box length: = __________"
Determine the Right-Thrust Offset
BUILD THE FUSELAGE
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