CONTROL SYSTEM

LN-3 has common elevator and rudder controls while the aileron and the flaps are of flaperon type.

RUDDER
There are rudder pedals in both fwd and aft cockpits. Control cables goes from the fwd pedals to the aft pedals and from the fwd pedals to the rudder horns located at the lower part of the rudder. Coil springs pull the fwd pedals forward thus keeping the rudder cables stretched up.

ELEVATOR
The dual joysticks are mounted to the same torque tube (blue) and are connected by a push/pull rod (green) in their lower ends. This rod moves inside the torque tube and extends aft through the main bulkhead and connects to the elevator lever (purple). From that lever, a push/pull rod goes to the elevator.
Rudder control cables are routed together and follow the lower part of the afterbody then the fwd fin spar and then directly to the control surface. Pulleys are located where the cables change directions.

FLAPERONS
The aileron function is achieved by links (yellow) that connect to the joystick torque tube (blue) and transfer the motion to one left and one right hand torsion tube (purple) that are connected to the flaperon rods (green).
The flap function is superimposed on the aileron operation by means of a flap torque tube (blue) to which the aileron torsion tubes (purple) are mounted. This flap torque tube can then be rotated by the flap rod and the flap lever in the fwd cockpit.

WATER BREAKS
Underneath the wing-like landing gear pod, two water breaks (brown) are located. These are normally retracted and flush with the lower surface of the pod. During slow water taxiing, the water breaks can be lowered by a lever located beside the landing gear retraction lever. In the lowered position they are vertical and perpendicular to water flow, with a reduced water speed as result. They are also connected to the rudder control cables in such way that a full rudder deflection to the left raises the right water break, thereby enhancing the left turn. The opposite applies for a right rudder deflection.
The water breaks are spring suspended and will automatically gradually retract at increased water speed.

ELECTRICAL SYSTEM
The LN-3 has a 12-volt DC electrical system. An engine driven 250 W DC generator provides power and charges a 25 amps gel cell battery. Positioning lights are mounted to the wing tips and at the top of the fin. There are also strobe lights at the same locations.

FUEL SYSTEM
Two cylindrical fuel tanks each containing 50 liters (13.22 US gallons), are installed fwd of the wing spar in each wing. One sight gauge for each tank located at the top of each cabin walls, tells the fuel level in the tanks. The fuel is gravity fed to the engine. The tanks are of considerable length and to prevent sloshing, there are a number of elliptically shaped thin plates located with certain spacing inside the tank. These act like “check valves” and allow the fuel to easily go inboard but slows down the outboard going fuel. This will have an effect on the fuel gauges that has to be considered.

BAGGAGE COMPARTMENT
Located aft of the main bulkhead and relatively close to the aircraft CG. Max. baggage weight is 30 kg (66 lbs.) but is limited to 20 kg (24 lbs.) with max. occupant weight in both seats.
Access is through a hatch in the main bulkhead. There is one 75 mm (3 inch) diameter tubular compartments stretching aft from the aft wall in the baggage compartment. This is for storing of fishing rods onboard.