ROBBE Arcus Talent ARF Building And Operating Instructions page 5

50
Aileron
15 mm
10 mm
Elevator
10 mm
10 mm
Rudder
25 mm
25 mm
Control surface travels
Test-flying
Ensure that all the control surfaces are at neutral (centre),
and check their direction of travel (sense).
Wait for a day with little wind for the initial test-flights. The
wind speed should not exceed 10 km/hr.
Building and Operating Instructions - Arcus Talent ARF
Checking the working systems, setting up the control
surfaces
- Charge the flight battery.
- Switch the transmitter on, and move the throttle stick to the
"motor off" end-point.
- Give the flight battery a full charge, apply Velcro (hook-
and-loop) tape to the pack, place it in the fuselage, and
connect it. Wait for the speed controller to emit a series of
beeps.
- Place the canopy on the model.
- Check the channel assignment of the control surfaces, and
swap over the connectors at the receiver if necessary.
- Check the neutral position of the control surfaces. If neces-
sary, loosen the clamping screws in the pushrod connec-
tors, set the control surfaces to centre, then re-tighten the
screws.
- Check the direction of rotation of the servos.
- When you move the aileron stick to the right, the right-hand
aileron should rise, the left-hand aileron fall.
- Pull the elevator stick back towards you, and the rear edge
of the elevator should rise.
- If any of the control surface functions works the wrong way
round, correct it using your transmitter's servo reverse
facility for that channel.
- Check that all the linkages are firmly fixed, but free-mo-
ving.
- Check in particular that the clamping screws in the pushrod
connectors are properly tight.
- The travels are measured at the inboard end of each con-
trol surface.
- The stated control throws are just a guide for the first few
flights. The final settings should be selected to suit the
individual pilot's flying style.
- The Expo settings should also be adjusted to suit your own
preference.
Test-flying, flying notes
- For your initial test-flights please wait for a day with no
more than a gentle breeze.
- A good flying site consists of a large, flat, open grassy field,
devoid of obstacles such as trees, fences, high-tension
overhead cables etc.
- Repeat the check of all the working systems.
- Ensure that all the control surfaces are at neutral (centre),
and check their direction of travel (sense). We recom-
mend setting up differential aileron travel, i.e. the up-travel
should be about 30% greater than the down-travel.
The Centre of Gravity should not deviate from the stated
point by more than 5 mm.
- Ask an experienced modelling friend to hand-launch the
aircraft for you. He should be capable of giving the model
a reasonably strong, flat launch.
- The model must always be launched directly into any wind.
- The model should be launched at half-throttle into wind.
Apply ful- throttle, and it will climb away at.45°.
- Keep the Arcus Talent flying straight and level at first; don't
initiate a turn while it is still close to the ground.
- Adjust the control surface trims if necessary, so that the
model flies straight with a reasonable rate of climb "hands
off".
- Check the model's response to control commands.
- If you needed to adjust the trims during the test-flight, cor-
rect the length of the appropriate pushrod once the model
is back on the ground, then return the transmitter trims to
centre so that full trim travel is available to both sides of
neutral for subsequent flights.
- Check the glider's stalling speed at a safe height.
- However, you should never fly the model like a pylon racer.
- Keep the aircraft's speed well above the stall for the lan-
ding approach.
- Always switch the motor off before the model touches
down.
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