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#4 Find the hard point and measure for the center, and drill a 4mm hole in the hard
point and glue a dowel in place, using 15 minute epoxy, thickened with micro balloons
or carbon / graphite powder. You may prefer to center drill the dowel on a press, before
installing it in the aileron. Be careful to mount it level to the surface, and 90 degrees to
the wing center.
#5 After the hard point hardens into place, install the stud and linkage clevises, repeat-
ing the procedure on the other wing.
Assemble the airplane and temporarily install the radio gear (battery, switch, receiver
ECT.) to get the balance point advised in the beginning of this manual; "center of the
wing tube", when satisfied with the C\G install them in the fuse permanently.
Flight Trimming the Valiant
Start by putting the C\G on the wing tube and test fly. Make sure the airplane is trimmed
for hands off level flying. Pull to vertical flight, making sure it goes straight up. Then, fly
a left rudder knife-edge. If the model goes to the belly, move the c/g forward a small
amount at a time until it goes straight with no pitch. Repeat the same test on the right
rudder knife-edge; it should be the same. If the motor thrust is aligned to the nose ring
the airplane will go straight up with no need for further adjustment. For the down lines,
you may need to mix 2-3 % down elevator to keep it from pulling to the canopy.
This design has no roll coupling or pitch coupling at knife-edge. If yours has these
tendencies, check all surfaces, making sure that they are perfectly straight at neutral.
Snap settings; set the for all snaps, positive or negative up line, and down line; set the
throws on the ailerons to 23 deg. up and down. Elevator, set at 14 deg. up and 18 deg
down.
Rudder, set the low rate rudder at 20 degrees and adjust it for exiting the snap cleanly,
without continued spinning. If you continually overshoot the snap, do not reduce the
ailerons. Reduce the rudder throw a small amount at a time, until you can consistently
exit them without further rotation. Increase the rudder if you consistently under snap.
For 1.5 snaps, the only change that you will need is an increase in rudder throw of 10
degrees. (A mid rate rudder). Again, adjust the rudder if you can't cleanly exit (over
rotate, reduce rudder and vice versa.
The rudder is very powerful and the Valiant can do a knife-edge loop easily on low rate
rudder. However, the fin and rudder were designed for a perfect snapping balance, and
you will have best stall turn results on high rate in windy or calm conditions.
The counterbalances were utilized on this design for a soft feel around neutral, but it will
also give you low speed power for low speed snaps and spins with very good control
through the speed envelope. There is no change in the aileron feel no matter what
speed you are flying the maneuvers.
Page 18
Instruction Manual "Valiant" (Draft Version)
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