R/C SAILING GUIDE
Radio controlled yacht models can provide the same enjoyment in “conversing with the wind” as their full sized counterparts can do. Using the natural energy of the wind, the model glides over the water, precisely controlled by its rudder and sails. Following are fundamental tips for operating in this elegant R/C sport.
1. RADIO CONTROL REQUIREMENTS
A 2-channel radio, with a stick controlled transmitter is required for R/C yacht models. Two servos control the sail and rudder.
. Rudder control servo:
Steers the vessel in the desired direction
. Sail control servo:
A small yacht model can be controlled by standard sized servos, but a special high torque servo may be required to control the sails on a larger sized model. Consult your hobby dealer to select a suitable R/C system.
2. WIND DIRECTION AND SAIL ZONE
The procedures for R/C sailing are the same as experienced on full-sized yachts. A yacht is capable of manoeuvring as shown in the illustrations. Bear in mind that a yacht cannot sail directly into the wind and there is an approximately 45 degree no-sail zone.
3. CONTROLLING A YACHT
The sailing performance of a yacht is largely influenced by the wind direction in relation to its sailing direction. The wind direction varies each moment. Control of the sail and rudder obtains smooth sailing, always keeping the direction of the prevailing wind in mind.
4. ADJUSTING MAST AND SAIL
The sailing characteristics of a yacht can be altered by adjusting mast angle and sail tensions.
.Weather helm and lee helm
Three basic sailing tendencies are present when the rudder is straight (neutral). When the vessel tends to sail windwards (weather) with the rudder straight, the condition is called a WEATHER HELM. Opposite to this, when the vessel sails downwind (Leeward), it is called a LEE HELM. A vessel that sails straight ahead is JUST HELM. Helm conditions can be adjusted by mast inclination. Inclining the mast forward (forestay) provides a lee helm, while including it aft (backstay), provides a weather helm.
.Adjusting leech curve (sail tension)
Proper adjustment of your sails is essential in order to utilize wind power efficiently. During strong winds, the sails should be given extra tension and less tension during mild winds. Adjust the mainsail by the boom vang, using the adjuster. Extend boom vang rod for weak tension and shorten for more tension. Jib sail curve is adjusted by inclining or declining the sheet adjuster on the jib halyard.
Moisture can cause troubles with R/C systems and batteries. In particular, contact with salt water can cause almost immediate corroding of precision electronic circuits. Avoid contact with water as much as possible; however, in case the R/C unit and/or batteries accidentally get wet, immediately remove from the model. Drain and wipe off any water allow it to air dry in the shade. If salt water gets inside the R/C unit, remove the case and rinse with fresh water. Test the dried unit prior to reinstalling in the model. Send to the dealer/manufacturer for repairs if any malfunction is observed.
Sailing safety precautions
To avoid serious personal injury and/or property damage, operate all remotely controlled models in a responsible manner.
. Never sail R/C vessels near people (swimming, fishing, etc.) or animals, as it could cause a serious accident.
. To avoid damage to the vessel and prevent accidents, do not sail R/C vessels in fast moving currents or restricted manoeuvring areas.
. Never sail R/C vessels near full-sized boats as it could cause accidents.
. Never sail R/C vessels in harbours, ports, or traffic routes used by full-sized ships/boats, as it could contribute to accidents.
. Sailing in weak or no wind conditions could result in loss of control of the R/C yacht model.
. Avoid sailing in shallow waters, among water plants or in areas which could have underwater obstacles. The keel and rudder of the yacht model may become entangled or caught.
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