Electric Boat Motors - What to Look For in a Trolling Motor

When people are looking for electric boat motors they are usually hunting for a boat trolling motor.

What is an electric boat trolling motor?

ELECTRIC

A trolling motor is designed to propel a boat at around five miles per hour, these are generally not primary engines like an outboard motor which are very much more powerful and are gasoline powered.

Trolling motors are normally used by anglers which is where the name comes from, i.e. trolling a fishing lure, but they are equally useful as a secondary motor for manoeuvring a larger craft at slow speeds in tight places.

Electric boat motors are available in three basic configurations, transom mounted, that is the rear of the boat, bow mounted, that is the front and engine mounted. Engine mounted electric motors are normally used where there is an existing outboard motor and the owner wants a smaller motor for fishing.

Electric boat motors are becoming more popular as the concerns regarding the environment are growing. Many lakes and rivers now have gasoline restrictions which mean that you can row your boat or sail it. Electric boat motors allow you to have some power.

What to look for in an electric boat motor.

The first consideration is where are you going to put it? If you transom is already full then a bow mounted motor is an option, if you already have an outboard then you may want to buy an engine mount as they can utilise existing control gear and look a lot neater.

The next thing to decide is how much power due you need? Trolling motors are mainly advertised on the basis of thrust, this is the force in pounds that the motor will deliver.

How much thrust you require is determined by the size of your boat. A larger craft will need more force to move it and by correctly sizing the electric boat motor you will ensure that it can do what you need it to without straining it or depleting the battery power unduly.

Most manufacturers websites or literature will give their recommendations for your particular boat but a rough rule of thumb is one pound of thrust for every forty pounds of load.

Electric Boat Motors - What to Look For in a Trolling Motor

ELECTRIC

Aircraft Electric Motors

Aircraft DC motors

electric kettle

DC electric motors are the inverse of the DC generator. They comprise armature field windings and commutator/brushgear and are similarly self excited. The main elements of importance in relation to motors are the speed and torque characteristics, i.e. the variations of speed and torque with load respectively. Motors are categorised by their field winding configuration (as for generators) and typical examples are series-wound electric motors, shunt-wound electric motors and compound-wound (a combination of series- and shunt-wound). Each of these types of motor offers differing performance characteristics that may be matched to the application for which they are intended.

ELECTRIC

A specialized form of series motor is the split-field motor where two sets of series windings of opposite polarity are each used in series with the armature but parallel with each other.

Either one set of field windings or the other may receive power at any one time and therefore the motor may run bi-directionally depending upon which winding is energized. When used in conjunction with suitable switches or relays this type of motor is particularly useful for powering loads such as fuel system valves where there may be a requirement to change the position of various valves several times during flight. Limit switches at the end of the actuator travel prevent the motor/actuator from overrunning once the desired position has been reached. Split-field motors are commonly used for linear and rotary position actuators when used in conjunction with the necessary position feedback control. DC motors are most likely to be used for linear and rotary aerospace actuators, fuel valve actuation and starter functions.

Aircraft AC motors

Aircraft AC motors are most commonly of the `induction motor' type. Induction motors operate upon the principle that a rotating magnetic field is set up by the AC field current supplied to two or more stator windings (usually three-phase). A simple rotor, sometimes called a `squirrel cage', will rotate under the effects of this rotating magnetic field without the need for brushgear or slip rings; the motor is therefore simple in construction and reliable. The speed of rotation of induction motors depends upon the frequency of the applied voltage and the number of pairs of poles used. The advantage of the induction motor for airborne uses is that there is always a source of constant frequency AC power available and for constant rated applications it offers a very cost-effective solution. Single-phase induction motors also exist, however these require a second set of phase windings to be switched in during the start phase, as single phase windings can merely sustain and not start synchronous running.

AC motors are most likely to be used for continuous operation, i.e. those applications where motors are continuously operating during flight, such as fuel booster pumps, flight instrument gyroscopes and air-conditioning cooling fans.

Aircraft Electric Motors

ELECTRIC

Electric Car Motors - How Do Electric Car Motors Work?

The electric car is one of the technological wonders that the century has produced. It has challenged the way we look at automobiles and been able to apply ordinary technology to give owners a new way to drive and own a vehicle. For a long time, man has relied on the internal combustion engine for all his automobile needs. This engine which runs on gasoline principally has dominated the world of automobiles until recently.

electric grill

In these few years, the trend has begun to change. Now, people are looking for electric cars. The reason is simple - they want a cheaper way to drive. No more expensive gasoline. Some also want to have a cleaner car - one that produces less smoke.

ELECTRIC

The electric car has all the parts of a regular gasoline car except one thing - it has no internal combustion engine. This means no gasoline. Instead of a gasoline engine, it rather has a motor that powers it to move. This motor is powered by asset of batteries. The batteries are powered by been arranged in a row and then their powers combined to produce enough current for the car to move. As the car moves the power is sued up. The batteries can be recharged after the car has made some miles.

Unlike conventional vehicles, the battery will not have to be recharged so frequently. It may take the car up to about 1200 miles before it needs a recharge. For city driving, this may be about a week or two.

Today, electric cars can make about 90 miles an hour; making them comparable to any mid sized sedan that you can find. With time, this speed will increase and the batteries will have a longer life.

Electric Car Motors - How Do Electric Car Motors Work?

ELECTRIC

The Difference Between AC and DC Electric Motors

There are two main types of electric motors. There are direct current or DC and alternating current or AC motors. The reference of DC or AC refers to how the electrical current is transferred through and from the motor. Both types of motors have different functions and uses. Dc motors come in two general types. They can have brushes or be brushless. AC motors, as well, come in two different types. They can be two phase or three phase. The differences in DC and AC motors are sometimes subtle, but these differences are what make one types better for a certain use.

electric scooter

Direct current or DC electric motors work for situations where speed needs to be controlled. DC motors have a stable and continuous current. DC motors were the first and earliest motors used. They were found, however, to not be as good at producing power over long lengths. Electric companies found using DC motors to generate electric did not work because the power was lost as the electric was transmitted. Brush DC motors use rings that conduct the current and form the magnetic drive that powers the rotor. Brushless DC motors use a switch to produce the magnetic drive that powers the rotor. Direct current motors are often found in appliances around the home.

ELECTRIC

Alternating current or AC electric motors are used differently based on what type of AC motor it is. Single phase AC motors are known as general purpose motors. They work well in many different situations. These AC motors work great for systems that are hard to start because they need a lot of power up front. Three phase, also called polyphase, AC motors are usually found in industrial settings. These motors also have high starting power build transmit lower levels of overall power. AC power gets its name from the fact that it alternates in power. The amount of power given off by an AC motor is determined by the amount of power needed to operate the system.

DC and AC electric motors are found everywhere from the home to the car to industrial plants. Motors are important to everyday life. Dc motors were introduced and caused a great revolution in the way many things are done. When AC motors came on the market the way motors were looked at changed because of their amazing starting power potential. DC motors and AC motors are different in many ways, but they still both are usede to power the world.

The Difference Between AC and DC Electric Motors

ELECTRIC