Very quick response time vs the Sail winch Servo.This style servo requires more torque then a winch servo as the amount of force produced at the end of the arm is reduces due to the length of the arm. For a typical one meter Sailboat, you would require a servo of this style that has at least 150 oz-in / 11 kg-cm of torque as a minimum. As you may expect this operates nearly the same as a standard servo where the only difference is the servo arm itself. The arm type sail servo uses quite a long arm in order to get an acceptable amount of line draw. The other Sail Servo style is the arm type. The Sail winch servo typically allows for 3 rotations of the drum with When the drum rotates the line is either let out or brought in. The sail winch servo as pictured on the right hand side uses a drum like wheel to house the sail line. The first style of sail servo that we will talk about is the sail winch servo. Each style has its own specific set of advantages and disadvantages. The sail servo comes in two different styles that are most common. The most important servo for an RC Sailboat is of course the Sail Servo.
The average user would use a 4.8-6.0v NiMh pack however LiFE, Li-ion, LiPo packs are available but be certain to include a Voltage Regulator in your system to limit the voltage. For larger RC sailboats a rechargeable battery is a requirement. The main reason is to ensure the battery pack can supply a sufficient amount of current to the servos. Although a 4 cell disposable AA case can be used, it is highly recommended for an RC sailboat to use a rechargeable battery. This is a battery that operates on 4.8-6.0v. To power the radio equipment a standard receiver battery is required. Purchasing a transmitter/receiver combination is more common when building your own boats. The reciver can be purchased with the transmitter if you choose to take that route. The receiver is what talks to the transmitter and then converts the radio signal to an electrical signal that can be used to control the rudder and sails of a sailboat. The component that is responsible for talking to the transmitter is the receiver. Now that we have talked about the transmitter we will look at the rest of the components that are required in order to run an RC Sailboat.
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