Manual Multiplex Cularis 21 4218 (page 17 of 56) (English, German, French, Italian, Spanish)

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Elevator

up (stick back) approx. + 14 mm

down (stick forward) approx. - 14 mm

Powermix approx. - 2 mm

Rudder

left and right approx. 30 mm

each side of centre

Ailerons

up approx. + 20 mm

down approx. – 10 mm

Flap approx. + 10 mm

Flaps (camber-changing flaps)

up (Speed) approx. + 3 mm

down (Thermic) approx. – 4 mm

Down-elevator mix with Flap approx. +/-1,5 mm

Spoilers

both ailerons up approx. + 15 mm

both flaps down approx. - 30 mm

Down-elevator mix with spoiler approx. - 8 mm

Both ailerons can be set to move up and both flaps move

down simultaneously in order to provide a “spoiler” function,

i.e. to shorten the landing approach; this is known as the

“butterfly” or “crow” braking system. At the same time a sui-

table amount of down-elevator trim must be mixed in to keep

the model in a stable attitude. This can only be done if your

radio control system features suitable mixers.

If you are not sure of this, please refer to the instructions

supplied with your radio control system.

Note: when you apply a right aileron command, the right-hand

aileron (as seen from the tail, looking forward) must move up,

the left aileron down.

If you cannot set the stated travels by carrying out adjust-

ments at the transmitter, you will need to re-connect the pus-

hrods to different holes in the servo output arms and / or con-

trol surface horns.

25. Gilding the lily - applying the decals

The kit is supplied with a multi-colour decal sheet, part 2. Cut

out the individual name placards and emblems and apply

them to the model in the position shown in the kit box illustra-

tion, or in another arrangement which you find pleasing.

26. Balancing

Like any other aircraft, the Cularis must be balanced at a

particular point in order to achieve stable flying characteri-

stics. Assemble your model completely, ready to fly.

The Centre of Gravity (CG) should be about 74 mm from the

leading edge at the wing root, measured either side of the

fuselage. This point is indicated on both sides of the fuselage

by moulded-in “pimples”. Support the model at this point on

two fingertips, and it should balance level. If not, you can

move the flight battery or receiver battery forward or aft to

correct it. Once the proper position is found, mark the location

of the battery inside the model to ensure that it is always re-

placed in the same position.

Fig. 47

27. Longitudinal dihedral

If the model is to fly “right”, the angle between the wing and

tailplane - the longitudinal dihedral - must be set properly in

addition to the correct CG. The appropriate figure for your

Cularis is about 2.5°. Look through the hole in the fuselage

below the tailplane: if you can see the swivel pushrod con-

nector, then the longitudinal dihedral is correct.

28. Preparing for the first flight

For the first flight wait for a day with as little breeze as possi-

ble. The early evening is often a good time.

If this is your first model aircraft, the next step is to ask an

experienced model pilot to help you, as things usually do not

go well if you try to manage on your own. Your local model

flying club should be able to help you find someone, or - fai-

ling that - your nearest model shop may be able to assist you.

Our flight simulator for the PC can also provide valuable expe-

rience prior to your “first real steps” in model flying.

You can download the simulator at no charge from our

website www.multiplex-rc.de. You will also need the mat-

ching interface cable for your MPX transmitter; this is availa-

ble from model shops under Order No. # 8 5153.

29. Be sure to carry out a range check before the first

flight.

Just before the flight, charge up the transmitter battery, the

flight pack and the receiver battery using the recommended

procedures. Ensure that “your” channel is not already in use

before you switch on the transmitter.

Ask your assistant to walk away from the model, holding the

transmitter. The aerial should be fitted but completely collap-

sed. Your assistant should operate one of the functions con-

stantly while you watch the servos. The non-controlled servos

should stay motionless up to a range of about 60 m, and the

controlled one should follow the stick movements smoothly

and without any delay. Please note that this check can only

give reliable results if the radio band is clear of interference,

and if no other radio control transmitters are in use - even on

different channels. If the range check is successful, repeat it

with the motor running at half-throttle (electric version

only). There should be no more than a very slight reduction in

effective radio range with the motor turning.

If you are not sure about anything, please don’t risk a flight.

Send the whole system (including battery, switch harness and

servos) to the Service Department of your RC system manu-

facturer and ask them to check it.

30. THE FIRST FLIGHT ...

Glider:

A test-glide from shoulder level, directly into wind, will give

you an approximate idea of the model’s “trim”, i.e. whether it

is set up correctly, or whether the control surfaces or trans-

mitter trims need to be adjusted. If the model swings away to

one side, move the rudder trim slightly in the opposite direc-

tion. If the model banks - one wing lower than the other -

apply slight aileron trim correction.

Hand-towing

This is the classic method of launching a glider to height.

Attached to a suitable length of towline (0.7 mm Ø nylon), the

model is pulled up by your assistant running into wind; the

glider will rise up the line in a similar fashion to a kite. The

towline needs to be fitted with a towring and pennant or pa-

rachute at the “model” end of the line.

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Multiplex Cularis 21 4218 Manual

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