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CARF-Models Co., Ltd, Contact email: techsupport@composite-arf.com
Fuel Tank formers and rear former
These formers are installed for two
reasons; fuselage rigidity, and as a
trouble free tank mount.
Once installed, they cannot be removed;
so, install them such that the tank is
centered on the wing tube.
Depending on the size tank you use,
they will need to be modified slightly. It is
best suited for the Tetra™ Crank Tank,
16-20 ounce. You will need to get the
tank off of the floor. You can use some
soft foam, or:
#1 Make a couple pieces of 2mm light
ply bridges, to close the gap on the
formers and get the tank off the floor.
#2 Cut some medium fuel tubing
length-ways as a cushion; wrap it around
the formers and test fit the tank, making
sure it is tight enough such that the tank
does not easily move.
#3 At this point, you can decide if you
want to leave the tank formers high as
is; to build a receiver tray on top or, cut
the formers such that the tray top goes
under the wing tube. Do whichever is
more convenient to your radio set up;
2.4GHz or 72 MHz.
What ever you decide, over or under,
glue the tray to the tube where it inter-
sects; it is an integral part of the struc-
ture of the center fuse.
#4 After you are satisfied with the tank
fit, install the tank with the front former
attached and in place, then slip the rear
one in place and adjust the fit. Glue it to
the fuse using C\A or 15-minute epoxy,
making sure the formers fit precisely, or
it can leave a bulge in the skin on the
undersurface.
#5 Trim and adjust the rear phenolic U
former in the rear, under the rear wing
pin, using 15 min epoxy, with micro
balloons or carbon powder
Page 14
Instruction Manual "Valiant" (Draft Version)
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