| Seen those great looking model airplanes
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| | will rotate 1000 times per minute for
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| whizzing around the park recently - but
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| | every volt it receives from the battery.
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| without the noise? Whatever happened to
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| | In other words, a 1000kvm motor is
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| that mosquito snarl? Discover the impact
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| | capable of 7400 RPM when using a 7.4v
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| that Li-Po is having, the most recent
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| | Li-Po, and 11,100 RPM when using an 11.1v
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| advance in power for electric model
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| | Li-Po. This information, combined with
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| airplanes. Discover how to calculate
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| | the prop type and weight of the plane
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| their normal and max power as well as
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| | gives you all the data needed to
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| their endurance - and a safety warning.
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| | calculate the final thrust output of a
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| What happened to
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| | given motor.
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| that mosquito snarl that always seemed to
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| | The amperage rating of Li-Po batteries is
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| accompany the sight of model airplanes?
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| | rated in milliamp hours (mAh). This
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| The answer is they're going electric and
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| | technical term describes how long the
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| silent. Li-Po (Lithium Polymer or
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| | Li-Po will provide electrical power in
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| Li-Poly) batteries are rapidly becoming
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| | much the same way that the size of the
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| the standard power source for electric
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| | fuel tank on a glow powered airplane will
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| model airplanes. Li-Po batteries are
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| | dictate how long the engine can keep
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| smaller, lighter and hold more power than
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| | running. Typical electric RC model
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| their predecessors (Nickel Cadmium and
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| | airplane flights can last 20%-50% longer
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| Nickel Metal Hydride). There are three
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| | when using Li-Po compared to other
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| specifications that need to be taken into
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| | batteries. The larger the mAh rating, the
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| consideration when making a Li-Po battery
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| | bigger and heavier the battery will be.
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| purchase for your electric model
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| | This is a major factor to take into
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| airplane.
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| | consideration when putting together any
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| The voltage of the battery will tell you
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| | electric RC model aircraft.
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| how powerful it is, the amperage rating
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| | Li-Po battery burst rates describe the
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| will give you an idea how long it will
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| | output characteristics of the battery.
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| last, and the burst/constant power rating
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| | Burst rates tell you how much power the
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| will tell you how quickly the power will
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| | battery is safely capable of discharging
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| discharge. A major difference between
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| | in one big burst. This number is often
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| Li-Po batteries and others available for
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| | higher than the constant power rating.
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| RC model airplane use is that it is much
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| | Once the burst of energy has been
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| easier to mistreat the battery thereby
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| | discharged, the constant power rating
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| creating unsafe situations the
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| | tells you where the power output will
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| consequences oc which can be dramatic.
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| | settle down to.
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| Li-Po batteries can be very dangerous if
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| | Li-Pos come with very strict safety
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| you don't follow all of the safe handling
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| | guidelines that tell you how to care for
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| procedures set out by the battery
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| | them. Charging rates, charging times, and
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| manufacturers.
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| | damaged battery disposal procedures just
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| In most cases, Li-Pos used for model
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| | to name a few. Damage to your RC electric
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| airplanes come in two voltage ratings
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| | model airplane can be avoided by
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| ratings; 11.1v and 7.4v. The rating
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| | following these guidelines. Properly
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| dictates how many volts the battery will
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| | matched brushless motors and Li-Po
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| discharge to your brushless RC motor.
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| | batteries can provide hours of clean and
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| Electric RC model aircraft motors
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| | quiet flying enjoyment. Take the time to
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| themselves have ratings that relate to
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| | understand everything that's involved
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| this voltage discharge specification. The
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| | with a Li-Po setup and you will have more
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| voltage of a Li-Po battery is directly
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| | fun and more time in the sky with your
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| tied to the RPM output of a brushless
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| | electric model airplane.
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| motor in that a motor rated for 1000kvm
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