Center Of Gravity; Wing Attachment - BVM PNP VIPER Construction And Operating Manual

Operation of a turbine powered model requires that the pilot/owner assume an extra level of
responsibility.
For operation in the U.S.A., an AMA Turbine Waiver is required. See AMA
http://www.modelaircraft.org/.

CENTER OF GRAVITY

NOTE: The Center of Gravity symbol on the fuselage side may be incorrect on some early
models.
The location shown here is correct and flight tested many times. This is a safe Center of
Gravity location.
Use a 1/16" drill bit located as shown 9.5" aft of
the L.E. of the wing strake. Drill 1/16" holes in
the bottom of both wings.
Insert a small button head screw for easy
reference.
NOTE: Position of ECU and Receiver batteries
allow fine adjustments to obtain proper Center
of Gravity.

WING ATTACHMENT

There are 4 identical aluminum pegs tapped
for 3mm bolts into both ends. There are (6)
3mm X 13mm S.H.C.S. The 2 extra bolts are
for spare parts.
There are 3mm bolts inserted and glued into the
aluminum receiving tubes, two at forward wing
fuse fairing and two at rear.
Hand thread the aluminum pegs into these
(4) receptacles. Remove the bolts on
outboard ends.
Insert the 24mm diameter aluminum tube
into the receiving fiber tube in the fuse.
There should be about 7-1/8" extended
outboard of each side of the fuse wing
fairing. Use a black marking pen to identify
the intersection with the fuse side.
BVM®2017 16 06/20/2017