Instruction manual

ManualsBrandsMaxford ManualsBaby CareL-4 Grasshopper

VII. SETUP & ADJUSTMENTS:

1. Ensure all parts are secure and ready for flight.

2. Check and if necessary adjust the center of gravity: Your L-4 must balance when lifted at a point approx.

3 inches (76 mm) behind the leading edge of the wing (i.e., it must hang level; neither nose up nor nose

down).

3. Check/adjust servo centering, direction and end-point adjustments: When you pull the right stick toward

you, the elevator should deflect upwards; push the right stick to the right and the right aileron should deflect

upwards and the left aileron should deflect downwards; push the left stick left and the rudder should deflect

to the left as viewed from the rear of the fuselage. If you are using a Computer Radio: For initial flights

set all linkages for near-max. possible deflections; then soften the aileron’s and elevator’s control throws by

selecting 60% or more exponential (use 30% exponential for the rudder).

Initial settings if you are using a

Non-Computer Radio:

Recommended Deflection

Elevator ...................................... 15 degrees (5/8 inches) up and down from center

Rudder ........................................ 20 degrees (7/8 inches) left and right from center

Ailerons ...................................... 12 degrees (1/2 inches) up and down from center

4. Check the Mylar covering material’s joints and surfaces. If necessary, carefully use a dedicated covering-

material iron to secure the edges and to tighten any loosened areas. Recheck and retighten from time to

time. (Be carefull to NOT use too much heat when you secure edges or tighten the Mylar!)

5. Ensure all preapplied stick-on insignias and markings are secure in their positions.

6. Balance your propeller, then use the hardware supplied with your engine or motor to securely attach

the propeller to the engine or motor.

Congratulations! Assembly is finished!

VIII. TRANSPORT & PREFLIGHT CHECKS:

1. Prepare your Grasshopper for transport and storage by disconnecting the struts at the fuselage and removing

the hold-down bolts that secure the wing to the fuselage; safely set aside the wing hold-down bolts and wing

hold down plate for future use. As you lift the wing away from the fuselage, carefully disconnect both

aileron servo extensions from the Y-cable. Separate the wing panels from their joiners and safely transport

or store your Grasshopper to await its next flight.

2. To prepare your Grasshopper for flight, reattach the wings by reversing the above

procedure. As you position the wing above the fuselage, guide the aileron servo

extensions into the fuselage and reconnect them to the aileron’s Y-cable. (To help

ensure the security of these servo connections, we recommend use of optional

Maxford USA servo extension safety clips.)

3. With the wing and aileron extensions neatly and safely reconnected and properly

positioned, align and insert the plywood projections at the middle of the wing’s

leading edge into the opening behind the ‘windshield’ in the fuselage, gently lower the wing onto the

fuselage’s wing saddle, reinstall the hold-down plate over the trailing edge, then insert and ‘snug’ (but do

not over-tighten) the two hold-down bolts to secure the wing to the fuselage.

4. Double-check the security of your engine (or the motor and its motor-mounting box) and make certain that

all control surfaces, pushrods, screws and other connections are secure throughout the air frame.

5. Double-check the control directions and amount of control throw of the ailerons, elevator and rudder.

6. As with all radio-controlled model airplanes, your Grasshopper must pass the radio range ground check

recommended by your radio’s manufacturer or you may not fly safely.

7. Be sure your tank is filled with the fuel recommended by the manufacturer of your engine (or the batteries

are fully charged and able to provide the current demanded by your electric power system).

8. Whether you use a glow engine or an electric motor, for your safety we urge you to get into the habit of

always moving your transmitter’s throttle to MINIMUM before turning ON your transmitter, and carefully

operate your choice of radio and power system according to the manufacturer’s instructions.