Electric flight - the best and worst of Li-Po
Copyright 2006 Bravos Direct
What happened to that mosquito snarl that always seemed to accompany the sight of model airplanes?
The answer is they're going electric and silent.
Li-Po (Lithium Polymer or Li-Poly) batteries are rapidly becoming the standard power source for electric model airplanes. Li-Po batteries are smaller, lighter and hold more power than their predecessors (Nickel Cadmium and Nickel Metal Hydride). There are three specifications that need to be taken into consideration when making a Li-Po battery purchase for your electric model airplane.
The voltage of the battery will tell you how powerful it is, the amperage rating will give you an idea how long it will last, and the burst/constant power rating will tell you how quickly the power will discharge. A major difference between Li-Po batteries and others available for RC model airplane use is that it is much easier to mistreat the battery thereby creating unsafe situations the consequences oc which can be dramatic.
Li-Po batteries can be very dangerous if you don't follow all of the safe handling procedures set out by the battery manufacturers.
In most cases, Li-Pos used for model airplanes come in two voltage ratings ratings; 11.1v and 7.4v. The rating dictates how many volts the battery will discharge to your brushless RC motor. Electric RC model aircraft motors themselves have ratings that relate to this voltage discharge specification. The voltage of a Li-Po battery is directly tied to the RPM output of a brushless motor in that a motor rated for 1000kvm will rotate 1000 times per minute for every volt it receives from the battery. In other words, a 1000kvm motor is capable of 7400 RPM when using a 7.4v Li-Po, and 11,100 RPM when using an 11.1v Li-Po.
This information, combined with the prop type and weight of the plane gives you all the data needed to calculate the final thrust output of a given motor.
The amperage rating of Li-Po batteries is rated in milliamp hours (mAh). This technical term describes how long the Li-Po will provide electrical power in much the same way that the size of the fuel tank on a glow powered airplane will dictate how long the engine can keep running. Typical electric RC model airplane flights can last 20%-50% longer when using Li-Po compared to other batteries. The larger the mAh rating, the bigger and heavier the battery will be. This is a major factor to take into consideration when putting together any electric RC model aircraft.
Li-Po battery burst rates describe the output characteristics of the battery.
Burst rates tell you how much power the battery is safely capable of discharging in one big burst. This number is often higher than the constant power rating. Once the burst of energy has been discharged, the constant power rating tells you where the power output will settle down to.
Li-Pos come with very strict safety guidelines that tell you how to care for them. Charging rates, charging times, and damaged battery disposal procedures just to name a few. Damage to your RC electric model airplane can be avoided by following these guidelines.
Properly matched brushless motors and Li-Po batteries can provide hours of clean and quiet flying enjoyment. Take the time to understand everything that's involved with a Li-Po setup and you will have more fun and more time in the sky with your electric model airplane.
.
To receive his free 5 part mini-series visit http://www.modelairplanesecrets.com/adtrackz/go.php?c=li_po
Motorcycle Batteries
All motorcycle batteries look small. The biggest ones you can find seem to be heavily burdened with the gigantic machines they operate. But its size does not mean easy maintenance for the battery.
For one thing, these batteries lose one percent of their charge per day just sitting there doing nothing. So you can see that you just can't park it, walk away, and come back in four or five months and expect it to work.
Amazingly some of them do work after that kind of abuse, but a greater number of them don't.
A modern motorcycle battery is a marvel of compact packaging. A motorcycle may look smooth on the outside, but inside it's a different story. Every single part of the motorcycle is vibrating when you start the engine. These vibrations affect the performance of the motorcycle battery, as they are made with lead plates that rattle as your engine churns.
Common sense will tell us that vibrations cause motorcycle batteries to lose their stored power....
Motorcycle Batteries
Batteries > Motorcycle Batteries
Balloon Lights are Gaining Popularity Worldwide
Corporate parties, weddings, birthday parties, reunions, fairs, amusement parks, marketing for large events, etc. it does not seem to matter what the occasion balloon lights are taking the event to all new levels.
These eye catching balloon lights are gaining ground fast!
The lasting impression they create spark imaginations and new ideas galore.
It has been the most enjoyable product to sell because of the creativity people have with them.
Balloon bouquets, pool parties (they are waterproof) Chinese lanterns, balloon arches, balloon drops, to name just a few great ideas I have heard.They do not have wires to restrict where you can put them.
They last a long time and come with extra batteries so you do not have to buy additional batteries.
Its introduction brings a whole host of new market and application opportunities.
Contact Information:Joy Boothe4 the Kids Toy Store801-627-3760
Balloon Lights are Gaining Popularity Worldwide
Batteries > Balloon Lights are Gaining Popularity Worldwide
New XSTAR SPORT Satellite Radio Computer Controlled Power System Makes Sirius and XM 'Plug and Play' Radios Live Portable
Islip, NY (ContentDesk) July 25, 2006 -- New XSTAR SPORT portable power system by Micro Information Services Inc introduced to make the XM Sportscaster or Sirius S50 "plug and play" satellite radios into LIVE portable satellite radios. XSTAR SPORT combined with the XM Sportscaster is lighter than iPOD. XSTAR systems have been on the market via internet web and eBay store since 2005.
XSTAR enables satellite radio customers of
Sirius and XM to use their inexpensive "plug and play" radios as true live portable systems, running on common AA or AAA batteries, either disposable or rechargeable. XSTAR computer controlled power management
technology (patent pending) regulates power to the radio and provides circuit protection for the radio and batteries.XSTAR SPORT is low cost, includes the AAA battery power system and micro satellite radio antenna.
XSTAR SPORT power system, running on rechargeable or disposable AAA batteries, provides longer run time and shorter...
New XSTAR SPORT Satellite Radio Computer Controlled Power System Makes Sirius and XM 'Plug and Play' Radios Live Portable
Batteries > New XSTAR SPORT Satellite Radio Computer Controlled Power System Makes Sirius and XM 'Plug and Play' Radios Live Portable
Revolutionay PlasmaCar Showcases at American International Toy Fair
Constructed of high-quality plastics, the PlasmaCar is built to last! Its rugged durability and simplicity, along with its eye-catching design make it the perfect ride-on toy. With no pedals, gears or batteries needed, the ease of operation can be mastered by anyone. The car is propelled simply by turning the steering wheel back and forth. With so many motorized riding toys available, it's refreshing to see a toy that promotes healthy exercise for children.Winner of the Canadian Toy Testing Counsel's Three Star award, the highest rating possible, the PlasmaCar has also won the NETS Gold Star Toy Award. It made Today's Parent's Top Toy List Wow Status and the Canadian Toy Association's "Hot Toys of the Holiday Season".
The What's UP Kids Family Magazine gave the PlasmaCar a Five Star rating.Distributed by PlaSmart, an industry leader in innovative toys, the PlasmaCar can be seen and experienced at the American International Toy Fair, Javits Convention Center in New York City....
Revolutionay PlasmaCar Showcases at American International Toy Fair
Batteries > Revolutionay PlasmaCar Showcases at American International Toy Fair
Electric flight - the best and worst of Li-Po televisions Batteries
Elegant Home Decorating Ideas Now has Yield House Furniture
Articles on home decorating, gardening and Do-it-Yourself projects. We also feature forums, and shopping. Join now to get access to valuable coupons and promotions to name brand suppliers of home decor accessories and furnishings.We've become a Web Partner with Renovator's Supply, and authorized to sell Yield House Furniture. Stop by and have a look. We'll be adding more and more!Our monthly newsletter also contains special promotions from top of the line merchants.
Subscribe now! ...
Electric flight - the best and worst of Li-Po
Batteries > Elegant Home Decorating Ideas Now has Yield House Furniture
Electric flight - the best and worst of Li-Po online degree Batteries
Concept of 'Agni' in Ayurveda
Being one of the panchamahabhoota, agni (fire) has the characteristic that it cannot exist without a base. In the body it exists in pitta dosha.Agni is responsible for the following functions: Digestion - indigestion (Pakti- Apakti) Vision- absence of vision (Darshanam- Adarshanam) Degree of heat (Matra- Amatratvamushmanala) Normal -abnormal complexion (Prakrit - Vikarit varnam) Prowess- fear (Shaurya- Bhaya) Anger - exholoration (krodham- Harsham) Confusion- clarity of mind (Moha- Prasadan) For...
Concept of 'Agni' in Ayurveda Electric flight - the best and worst of Li-Po plasma tv Batteries
Batteries > Concept of 'Agni' in Ayurveda
hearing aid Electric flight - the best and worst of Li-Po Batteries
Electric flight - the best and worst of Li-Po potty training Batteries