Tuesday, August 26, 2008

How fly rc Helicopter

The tail rotor blades rotate to exert force in a sideways direction that keeps this from happening. How does the tail rotor know when to exert this force and how much to exert? Thats where the gyro comes in.


The gyro takes feedback from how the pilot is controlling the helicopter and how the helicopter is turning. If it determines the sideways spinning motion occurring is not being called for by the pilot, the gyro employs the tail rotor to react to keep the helicopter in the desired position.


Now that you have the basics of radio control helicopter models flight, youll know part what youre looking at when you select your model. Youll also know the basics of movement, which will go a long way in learning to control your helicopter.



Hobby RC Car

Having said all that in favor of electric powered hobby rc cars, I will mention that they don't have nearly the high performance features of their gas powered counterparts but you can improve that with aftermarket parts and engines upgrades. Stock models, out of the box, will usually run up to 10 minutes before the batteries need recharging, which takes about 15 minutes. By having a second battery pack fully charged and ready when the battery runs low will save down time and after all, we want to be playing...not waiting!


If this is your first hobby rc car, you may want to get a Ready-to-Run (RTR) unit complete with a 2-channel radio so you can be on the road in about an hour. Speeds of between 20-30 miles per hour are common and Nikko radio control cars offer a good variety, but they're certainly not the only manufacturers out there. These types of vehicles are usually targeted at new modelers and "backyard" drivers, rather than racers bent on winning organized competitions. But again, as your skills grow, you can improve your hobby rc cars speed and operation with upgrades like a new motor.


Motors are classified as either Stock or Modified. Stock motors have plain bushings, fixed timing, and 27 turns of machine-wound wire and it usually comes with the car kit. Modfied motors have ball bearings, custom winds, and adjustable timing...offering very different performance specs for your radio control cars. Fewer winds usually equals greater rpm's and shorter run time while more wire strands usually means smoother acceleration. Some of the very best (and most expensive) electric motors available are made by a company named Hacker Brushless.

Great RC Battery

When you want an RC battery for your radio control car, truck, boat, heli or plane, you want top quality at reasonable prices. I've spent many hours searching the Internet for these valuable batteries from reliable suppliers and I think you'll be pleased with the results.


Bear in mind that a NiMh battery is superior in many ways to the equivelant NiCd battery in that it's much lighter, the charge lasts longer and nickel-metal hydride is friendlier to the environment because it does not contain the toxic chemicals found in other batteries. They are however more expensive but the price keeps dropping now that LiPoly cells are on the market.


I trust that you'll find all that you need here but if you don't, then feel free to contact me and I'll try my best to supply you with the battery of your choice.


Rechargeable R/C Batteries


More RC batteries



Info for Carbon Fiber Rod

The appearance of this cloth generally depends on the size of thread and the weave chosen. Carbon fibre is naturally a glossy black, but recently colored carbon fiber rods have become available.


The ribbons mentioned above are then combined with epoxy resins to form reinforced composites which are very light and very strong for their weight. In fact, carbon fibre composites are often used to replace metals in airplanes, tennis rackets and golf clubs!


Carbon fiber rods and tubes are made by pulling or wrapping carbon fibers and epoxy resin to a specific diameter which in turn forms a densely reinforced carbon composite.


How to Work with Carbon Fiber Here's a handy tip: did you know that CA or "Krazy Glue" debonder (acetone) dissolves CA glues but does no damage to carbon fiber rods? This means that you can re-use old rods and tubes by soaking the part in acetone for a couple of hours and then wiping it off!


Cutting rods: use an abrasive cutoff wheel chucked in a Dremel tool or else a very fine 32 teeth-per-inch hacksaw. Do not use a band saw. However, to cut small rods up to 3mm in diameter you can also use a bicycle braided-cable cutter available from many bike stores. The V-shaped jaws prevent the ends from splintering. If you work with a lot of carbon fiber they're well worth buying.


Attaching overlapping carbon fiber rods: tack the rods together with a small DROP of medium CA, let dry then take a length of cotton thread (or Kevlar thread for super-strength) and wrap the joint several times all the way around, then soak the joint with thin CA. You'll be amazed at how strong and flexible the joint is!



Fantastic New Remote Controlled Helicopter Models

Remote controlled helicopters are sure to push your coordination, imagination and mechanical skills to the limit. And it's


absolutely exhilarating to fly a complex miniature electric machine in your living room, backyard, or local field without having to


worry about the noise and messy oils and gasses involved with the larger type gas remote control helicopter.


When you land the electric remote controlled helicopter it will be just as clean as when you took


off (sometimes even cleaner!) and you won't even disturb your family. This field of micro helicopters is fairly new, having been


around for only a few short years. We can only imagine what the future will bring. We are already seeing new developments in lithium


batteries and brushless motors which can now be used to achieve flight durations of over 20 minutes...plenty of time to get your kicks!

RC snowmobile for winter fun!

An RC snowmobile can be a great investment for some serious winter fun! If you live in an area that gets lots of snow during the winter months, you know just how boring you can be cooped up in the house with little to do, just itching for some outside entertainment.


If you are already an RC user, then you know just how much fun remote controls are. Trouble is, almost all RC cars and trucks are simply not designed built for winter. The slush and water create a problem for the servos and within minutes you no longer have control. Add to that the problem of not being able to gain any traction because of the tires and using your summer RC vehicles becomes impossible.


But when you invest in an RC snowmobile all of those problems become a thing of the past, because these vehicles are designed for winter. So you know what that means? It means you are going to have hours of fun out in the snow. What a great way to help speed winter along.


There are a variety of different electric remote control snowmobiles that are on the market, many scaled from the real thing. Take for example the Ski-Doo Fusion 900, which is the mini model, of the real thing. Many of these electric models are very realistic looking with attention to detail.


They come with a 9.6V battery pack or 7.2V battery pack. Although the electric models are a lot of fun, performance is minimal and so is the excitement level. They are an excellent starter RC snowmobile but if you really want a rush youll want to invest in a nitro powered version.


If you invest in a nitro model get ready to enjoy an aggressively designed snowmobile thats ready to race through the backcountry, or race against your friends. Because of the speed associated with the nitro units its not the best starter option.


You should spend some time at slower speeds learning how your snowmobile responds to the remote controls. That way youll save yourself a lot of downtime doing repairs. Actually if you crack up at high speeds you could destroy your snowmobile and your winter fun.


The nitro remote control snowmobile are more geared towards adult modeler or a very mature teen modeler. The sound effects of the nitro make it very real, and there is no question that their high performance makes them a great choice for that higher level of excitement.


So you see, winter doesnt have to be boring and you dont have to spend your days wishing spring would arrive. Instead, grab your boots and mittens, get off the coach, and get outside to enjoy your RC snowmobile, packed with hours of entertainment and get ready for an adrenalin rush! Youll forget all about those winter blues.



Nitro RC cars

Radio Control System In hobby quality nitro RC cars the radio control system is fully proportional. This means that the speed of the car can be finely controlled. You can go at 0% to 100% full speed, and any speed in between, just like a real car. The same goes for steering the car. You can turn left gently, or turn left aggressively. You can turn right gently, or turn right aggressively.


Radio control parts that are installed inside a nitro RC car:


1. Receiver


2. Fail safe


3. Servo for carburetor and brakes


4. Servo for steering


5. Receiver batteries


6. On/off switch Transmitter - The transmitter is what you hold in your hand.


Your left hand is usually used to squeeze the trigger, which controls the speed of the car. The more you squeeze, the faster the car will go. If you want to stop or brake, push the trigger towards the opposite direction. Your right hand controls the steering wheel on the transmitter. This controls the direction of the car, whether to turn left, right, or just go straight. The stick type used two sticks. The left stick is used to control the speed of the car, and the right stick is used to steer the car.


The pistol type uses a trigger and a steering wheel. The trigger is used to control the speed of the car, the wheel to steer the nitro RC cars. The transmitter needs a 12-volt supply to run, usually via eight AA sized batteries. Receiver - The receiver is a small rectangular device mounted on the nitro RC car. It has a wire (usually 19) that acts as an antenna to receive signals from the transmitter. Gas RC cars need a 2-channel radio control system. 2-channel means that there are 2 servos connected to the receiver. The receiver needs a 6-volt supply to run, usually via four AA sized batteries.


Tips: Never, ever, cut the antenna wire. I know the wire is long but still, resist the temptation to cut it. To avoid radio glitches, keep the receiver and antenna as far away as possible from the 2-stroke engine. Servos - The servos are small mechanical motors with decide the speed and direction the car will travel. Nitro RC cars have two servos, one connected to the carburetor, another to the steering mechanism. The servo connected to the carburetor controls the speed of the car. It also controls the braking mechanism. The second servo is connected to the steering mechanism, controlling the direction of the cars front wheels. Frequency Crystals - The transmitter sends signals to the receiver on a specific frequency. Removable frequency crystals, located at both the transmitter and receiver, determine this frequency.

Download Free Flight Simulator

So your looking for an simulator? There are so many available now it can be very confusing but this article will help clarify things.


To start with I will suggest that you do yourself a huge favor and download free flight simulator FMS (Flight Model Simulator) because it's an excellent tool if used properly. The big mistake that so many people make is to believe that the simulator will teach them to fly. A simulator cannot teach anything, whether you download free flight simulator or anything else. They are simply not programmed with that ability. Many software packages have a built-in tutorial that allows the user to step through the functions of the program as it explains how to use each one. The RC flight simulator does not have this feature.


For instance, it does not explain that stick movements should be gentle and only enough to get the model to perform a maneuver. It does not explain that the model must be controlled into and out of a turn with the ailerons. These are the functions of an instructor. The flight simulator is a tool to practice the maneuvers that have been taught by an instructor. A student pilot, especially a beginner, can develop some very bad habits while using a simulator that are difficult to break later.


There is a young pilot who taught himself to fly using an RC flight simulator (I don't know if it was a download free flight simulator or not). When he arrived at the field to get some one-on-one instruction, he had already developed some bad habits. He managed to fly circuits around the field maintaining a good altitude although a little low according to the instructor. The problem that he had developed was his execution of the turns. He would make the turn with a series of very quick movements of the aileron stick. This was obvious by the erratic banking into the turn. The instructor showed him on several occasions how to make the turns smoothly with gentle movements of the sticks. He is now flying an aerobatic plane and his turns are only slightly less erratic.


For beginners, RC flight simulators are excellent tools for building spatial orientation, motor skills, and confidence. For more experienced pilots, flight simulators, even the download free flight simulator, can help in building motor skills required in doing the more difficult maneuvers. The amount of benefit that the pilot can gain from the simulator depends entirely on how well the simulator emulates the model. On most simulators, the flight characteristics can be adjusted so that it more closely emulates the "feel" of the model. None of the flight simulators have progressed to the point that the flight physics are perfect but they are close enough that they can be of significant benefit.


Dne of the most difficult things to master for the beginning pilot is approach orientation. There is a natural tendency for the beginner to move the stick in the direction he wants the model to go. When the model is moving toward the pilot, the aileron and rudder controls are reversed. This means that in order for the model to turn to the pilot's left, the stick must be moved to the right. Using a simulator, even a download free flight simulator, allows the pilot to practice approaching maneuvers for hours on end so that it becomes second nature to move the stick in the correct direction for the model to take the desired flight path. After approach orientation has been mastered, all other maneuvers start to become easier to accomplish, especially landings.


The primary benefit of flight simulators, including FMS download free flight simulator, is that of building motor skills. The pilot, whether a beginner or experienced, can practice specific maneuvers for hours without having to be concerned about weather, time of day, temperature, or number of people at the field. The motor skills that are developed through hours at the simulator are basically the same as "muscle memory" in golf. This means that the skills are related more to the muscles reacting to a simple command than the brain sending a series of commands to the muscle.


For instance, the pilot wants to perform a snap roll with a Giles 202 model. He thinks "snap roll" and his fingers simply move the sticks to the appropriate position rather than his having to think in what position the sticks need to be. The end result of the muscle memory is where modelers get the term "feel" for a model. Since there is no positive feedback system built into a transmitter, there is not true feel for a model. The feel of the model comes from the difference in the expected feel based on muscle memory and the actual feel from the movement of the sticks.


Many beginners do not progress as well as others simply because of a lack of confidence. This is especially true if the student is not able to fly very often due to conflicts in scheduling time to devote to learning to fly. With each trip to the field, he must re-learn some of the things that he has forgotten during his absence from the field. He must again reinforce his motor skills and regain his muscle memory or feel for the trainer. Since his progress may be much slower than that of other students at the field, he may become frustrated and much less confident. The download free flight simulator allows the beginner to practice what he has learned to maintain or improve his motor skills and not lose his confidence. When he goes to the field, he will subconsciously think, "I can do this."


A few years ago, there was an article in one of the leading R/C magazines about the benefits of an RC flight simulator. There was a story of a young man who flew a club trainer a few times then bought a flight simulator. He knew enough of the basics to be able to hone his skills on the different model configurations offered on the simulator. After several months of practicing on the simulator, he went back to the field and flew every model at the field including a ducted fan jet plane. He had no problems with basic maneuvers because he had developed the skills required through many hours of practice with the simulator. This is an extreme case but it shows what can be accomplished through using a simulator, even FMS download free flight simulator, if the basic methods have been taught.


If pilots get proper instruction and use the flight simulator to practice what is taught, it can be of significant value in learning to fly or to perfect various maneuvers. It can greatly increase the "stick time" that the pilot is able to achieve in given period of time. It is a tool that if properly applied can help a pilot to progress at a much faster rate than normally possible. Above all, it is up to the pilot to make sure that this tool is properly applied by getting the right kind of instruction and not try to learn on his own.


If, after you download free flight simulator FMS, you want to explore commercial versions, then be sure to take a look at the hugely popular Real Planes G3 simulator below...and enjoy!

Radio Control Jets 2

Another difference in radio control jets is the engine type. Some of the more basic jets have a ducted fan powered by a an electric motor or else a glow-type model aircraft engine. Other models are powered by turbine engines. These turbine engines are exactly what they sound like real jet engines.


Its important to note that the engine choice of an aircraft is not an afterthought. It is an essential part of the aircrafts design. You cant put a turbine engine on just any radio control jet. A turbine engine must be supported by a very structurally sound model jet frame. There is a lot of speed and vibration associated with a turbine engine, and your model has to be up to the physical strain.


An important consideration of turbine engines is safety. A turbine engine requires a heavier fuel load, and it operates at high temperatures. If a jet with a turbine engine crashes, fire is likely to follow. If you are operating a turbine engine jet, be sure to carry along a proper fire extinguisher and keep your distance from spectators.


Radio control aircraft can be a fun and exciting hobby. And if you are into speed, radio control jets may be just what you are looking for.



READY TO RUN (RTR)

Maybe the best way to enjoy the simplest in radio control is to go for an all inclusive cheap radio control cars package.


You can get these from toy stores, hobby shops, online, or just about any of your discount department stores. This form of RC car generally comes ready to ride straight out of the box. The car comes with its own radio controller with one or more frequencies, rechargeable batteries, and the car itself. These come in various scales, colors, and complexity. You can purchase cheap radio control cars anywhere form the size of a matchbox on up.


Perhaps the best part about these simple cars is that they dont have smaller, loose parts and are therefore great for small children. Many of the top-notch RC enthusiasts cut their teeth on easy to find, cheap radio control cars. You can get into one of these for anywhere from $15 to $100, depending on what bells and whistles you want.

Finding a business and the money

Business brokers will be able to help you find businesses in this market that are for sale. The cost of buying a business or franchise is related to the customer base, the reputation of the business and the profitability. Starting one depends on how quickly you want to grow and the number of customers you can sign up to use your service. In either case you will need some money to run and own the business. The business will dictate how much is needed. Once you find a business for sale, the negotiations will be critical if you need the help of the current owner in order to make the purchase. If this is the case, the price will probably be higher to buy the business. Other sources for coming up with the money are relatives and friends, the bank and business lending. Each source has its own problems and pluses. The real meat of the matter is how much extra you will need to make the deal.




Several concerns with this business are apparent. Can another owner assume the customers under contract? How much longer are the contracts in force? Is there a continuation clause in the contract that controls the fees that are charged to do the work? Is there a sales person that is responsible for getting new clients or was that what the old owner did for the company? This is important if the new owner is not a sales type of person. Someone has to speak for the company and make the company grow with new clients.





Receiver batteries

We will look at the procedure for installing the radio system of an rc helicopter.


Before proceeding to install your radio system, you will need to do some tests to ensure that it will function properly in the rc heli. The range test should be performed according to your radio manufacturers instructions, but here is a general procedure.


Walk away from the receiver, while moving the transmitter sticks.


Continue walking until the servo movements become erratic.


Walk back towards the receiver, and stop when control returns to normal.


Compare this distance with the specified minimum range check distance in your owners manual.


If the distance you found is less than the specified distance in your manual, then the radio is not safe to use in your model and will have to be sent back to the manufacturer for repair.


Before mounting the servos in your rc helicopter, ensure that the throws are at 100%, and that the servo arms are set perpendicular to the servo body. Also, center all the trims and make sure that the batteries in both the receiver and transmitter are fully charged. This is important because all adjustments you will be making require the radio to be on. When you are about to attach the servos to the fuselage, disconnect the battery and servos from the receiver. It is important that only the rubber grommets supplied with your servos touch the rc helicopter body, and that the mounting screws are tight enough to compress the grommets. Do not tighten the screws too much, or the grommets can become too compressed to much to be effective shock absorbers. Once the servos are installed in the fuselage, reconnect the battery and receiver. After double checking that the all the trims are set to neutral and that the servo arms are mounted properly, you can proceed with installing the ball links onto the inner holes of all the servos.


The rc helicopter should come with pre-cut pushrods. Install these on the servo arms by either screwing on the ball links, or using snap on clevises. If you are using the snap on clevises, be sure to secure them by sliding on a piece of fuel tubing. This will prevent them from coming loose in flight. Once the aileron linkage is connected, move it with your hands to see if the swashplate moves freely, without friction. Install the other linkages in the same way, but be careful to match the throw of the throttle servo to the carburetors range of travel. If this is not done properly, it can cause overheating and damage the engine. Also, be sure that an idle position on the transmitter does not turn off the engine completely. There still needs to be a way to turn off the engine, but this can be accomplished with the throttle trim tabs on the transmitter.


The gyroscope should be installed as shown in the owners manual. Make sure to place it where it is unlikely to be damaged. Most rc helicopters will have a specified location for the gyro. Use servo mounting tape to attach the servo, this will insulate it against vibration and attach it firmly to the fuselage.


Mount the on/off switch on the side of the rc helicopter opposite the exhaust. Also, mount the switch in a place where it will be easy to access. Orient it in a logical way, so that you will not turn it off accidentally.


The receiver and battery are now ready to be mounted. Before proceeding, cover both with plastic wrap to protect against fuel, dirt, and other contaminates. Pack them with rubber foam, and secure them with rubber bands. Depending on the type of antenna your radio system has (wire or whip), the antenna will have to be either routed outside the helicopter, or left inside the canopy. Be sure to follow the instructions in your owners manual, and don't wrap the antenna around itself. This will reduce it's range and could lead to a crash.

Using Lithium Polymer Batteries in Your RC Helicopter

Introduction to Using Lithium Polymer Batteries in Your RC Helicopter


Lithium Polymer batteries are currently considered the best electric power source available for use in electric rc helicopter kits. The reason for this is that lithium battery packs are significantly lighter than NiMH or NiCD packs, and have higher capacity for the same size. Over the last five years they have worked their way into the hobby market, and in addition to being used in electric rc helicopter kits they are also common in rc boats, cars, and airplanes. Their low weight and high capacity make them ideal for long flight times, while also providing more power.


Understanding Lithium Polymer Battery Specifications:


Lithium Batteries are also know as LiPo, Li-Po, LiPoly, and Li-Poly. What do all the lithium battery specifications mean? The values that are the most important are:


Pack voltage (depends on cell count; each cell is 3.7 V)


Capacity (mAh)


"C" rating (describes the rate at which power can be drawn from the battery)


Lipo Battery Cell Voltage


The nominal voltage of each cell in the pack is 3.7V, but this can go down to 3.3V during discharge, and up to 4.2V when fully charged. A battery pack is composed of two or more cells put together in series for increased voltage, or in parallel for increased capacity. A 2 pack with 2 cells in series would be rated at 7.4V (2x 3.7V).


The battery pack configuration is denoted by the number of cells in series and the number of cells in parallel. A 3s2p pack would have three cells in series, and 2 cells in parallel, using a total of 6 (3×2) cells. A 4000mAh 3s2p pack would have a capacity of 4000mAh (2 x 2000mAh), and a voltage of 11.1V (3 x 3.7V). It would internally consist of six 3.7V 2000mAh lithium polymer cells. The cells would be doubled up (the 2p part of 3s2p) to get 4000mAh, and there would be three in series (the 3s part of 3s2p) to get 11.1V (3 x 3.7V).


The "C" Rating


The "C" rating describes how quickly a battery can be discharged. A 2000mAh LiPo battery with a "C" rating of 1C continuous would mean it should not be discharged any faster than 2000mA or 2A, which would take one hour. A 2000mAh pack rated for 12C continuous would be able to discharge at 12 times its capacity (12 x 2000mA = 24000mA or 24A) at which rate it would discharge in 1/12th of an hour. Using a pack with a higher C rating than you require will leave some room for safety, and extend the life of your battery.


Continuous Current:


If you know how much continuous current will be drawn and the capacity of the pack you want to use, you can easily determine what C rating you require. If you are drawing 5A from a 1320mAh pack, simply take the current and divide by the capacity: 5A = 5000mA, 5000mA / 1320mAh = 3.8C.


Burst Current:


LiPo batteries are also given a C rating in terms of burst, which is how quickly the battery is able to discharge for a short time. A burst rating of 20C would mean a 2000mAh battery could supply 20 x 2000mA = 40000mA or 40A for a few seconds.


Selecting the Best LiPo Battery for Your RC Helicopter


To select a battery for your rc helicopter, you first need to know what voltage you require and how much current you will be drawing continuously.


If the motor in your rc helicopter is rated to work with 11.1V, you would need a 3 cell battery.


If you need to draw 20A, and you would like your rc helicopter to have a 10 minute (1/6th of an hour = 6C) flight, you would need a battery with 20A / 6 = 3.3A = 3300mAh.


This means you would need to put a 3s 3300mAh battery with a C rating of 6 or higher in your rc helicopter.


Thunder Power RC has a LiPo battery for almost any electric RC helicopter. Always Remember These LiPo Safety Instructions


Remove the battery pack from your rc helicopter before charging.


Only use chargers designed to work properly with lithium polymer batteries.


Always place your LiPo on a fire-proof surface while charging or use a LipoSack.


Never leave your battery unattended while it is charging.


Never charge a lithium battery if it is below 3.0V per cell.


Never charge a lithium battery that is puffed up, or damaged in any way.

Eating fish

A study published in the Journal of the American Medical Association, established fish consumption could reduce the risk of dying from heart disease by one third, and the overall mortality was 17% less.




Another study released by the Institute of Medicine found that eating seafood also seems to support a healthy heart.




According to Donald Hensrud, M.D., chair of Mayo Clinic's Division of Preventive Medicine and associate professor of preventive medicine and nutrition, "Fish contain unsaturated fatty acids, which, when substituted for saturated fatty acids such as is contained in meat, may lower serum cholesterol. But the main beneficial component appears to be omega-3 fatty acids in fatty fish. Omega-3 fatty acids have many potential beneficial effects including improving cognitive function in developing children, decreasing triglycerides, lowering blood pressure, reducing blood clotting, enhancing immune function, and possibly others. However, the strongest benefit from omega-3 fatty acids is reducing the risk of sudden cardiac death, which appears to be due to decreasing the risk of abnormal heart rhythms."




Toxins in fish include mercury, dioxins, and polychlorinated biphenyls (PCBs). How much toxin a fish has is dependent on the type of fish and where it was caught. Each state issues advisories concerning a safe amount of locally caught fish for consumption. Fish that have higher levels of mercury include shark, tilefish, swordfish, and king mackerel, as they are large fish that feed on smaller fish that, in turn, store methyl mercury in their own bodies from their own dietary consumption. Therefore, these fish have more concentrated mercury content.

Fatty fish that contain the most omega-3 fatty acids include salmon, herring, and tuna. In addition, many types of seafood contain small amounts. Two three-ounce servings per week of fatty fish are recommended. Due to their high susceptibility to toxins found in fish, Dr. Hensrud recommends that children, as well as women of childbearing age, should limit the amount of canned Tuna to 6 ounces per week and limit other fish eaten to a maximum of 12 ounces a week. In addition, they should avoid eating certain fish like shark and swordfish altogether.





Keep losing weight

For the study, the women were divided into four groups, each with a different calorie intake restriction between 1,200 and 1,500 per day, and each group was assigned moderate to vigorous physical activity with varying levels of duration requiring a calorie burn of 1,000 to 2,000 per week. After six months, all of the women had lost weight; averaging between 8 and 10 percent of their starting weight-but only 47 women were able to sustain that weight loss at the two-year mark. These women exercised the most, burnt the most calories, and reported eating less food in general and decreasing dietary fat. The lead author of the study, John Jakicic, stated that people need to exercise more to keep losing weight, especially if they are already obese or overweight.


Current data, showing that over one-third of American women are now considered obese, has given cause for a new study led by John Jakicic, chairman of the Department of Health and Physical Activity at the University of Pittsburgh. It appears that the American Heart Association's current guidelines of at least 30 minutes of moderately intense activity five days a week (150 minutes per week) falls short-by almost half-of what the new study recommends. After following 200 women considered being overweight or obese for a two-year period, Jakicic's team found that in order to take of weight and keep it off that the study group needed to exercise about 275 minutes a week, which translates to 55 minutes, five times a week or 40 minutes a day.


It is hard for many people to find time for this kind of exercise with today's hectic life style, but there are ways to add more activity to your day that doesn't require much extra time. Try walking or biking to work, take the stairs, do leg lifts while sitting at your desk, wear wrist or leg weights during exercise or all day, be creative and make-up some of your own. Anything that keeps you moving helps to burn calories, and that is what it takes to get the weight off and keep it off.

Monday, August 25, 2008

Fly your RC Helicopter tips

Before You Fly your RC Helicopter


1. Always check / tighten all important screws before you fly rc helicopters.


2. Make sure you have the correct flight mode selected before you fly. If you use a simulator or have different 'birds' this is especially important.


3. If your radio has lots of switches, set it so that when you start all your switches are pointing the same direction.


4. Check your radio's range.


5. Make a checklist and stick to it.


6. Always ensure that your linkages are secure. Sometimes, when making adjustments, one end will unscrew more than the other and is just hanging on by a thread. If it slips off during flight, it could be a very expensive and dangerous lesson. Check them quickly before you spool up.


7. Make sure your receiver and transmitter batteries are fully charged. A dead battery can really wreck havoc in the air.


8. Whenever you start your rc helicopter, whether it's a nitro, gasser or electric, always hold the blade grips tightly. If your throttles not all the way down, or there's a glitch, your heli can spin out of control and cause serious damage.

Thursday, August 21, 2008

Advantage of Flying Electric RC Helicopter

The advantage of flying electric RC helicopter does not end with these five points. RC Helicopters capture people's interest since their very first inception. To make matters worse, flying one required countless hours of practice and tremendous amount of patience. However, all that is about to change. With the introduction of electric RC helicopters, flying these amazing models are not as far-fetched as they used to be. Here are five reasons why:       


1.    Small Size and Low Cost:


Before electric helicopters, indoor flights and flights in your own backyard were next to impossible. Now, they are quick and easy. Newer versions are so small that even flying in the bedroom is possible. The smaller size of these helicopter means that it is easier to transport as well. However, for pilots who prefer big aircrafts, there are electric helicopters as big as.50 size gas models available.

Flying RC Helicopter used to set people back thousands of dollars. People had to buy the helicopter kit, servos, engine, starter, gyro, receiver, radio controller, a hundred other equipments, and of course - fuel. When everything has been purchased, you still have to assemble it!


2.    Easy to Maintain:


Maintenance used to be one of the biggest hurdles for anyone wanting to start flying RC helicopters. Thankfully, electric RC helicopters tremendously decreased the amount of repairs required. These little wonders were specifically designed to keep the amount of fixing necessary to minimum. Therefore, repairs can usually be made with just the bare hands or with only one screw driver. Even more impressive is the fact that these types of helicopter rarely need repairing at all. They can survive most types of crashes without any problem.


3.    Reliable and Easy to Fly:


With gas helicopters, countless crashes occur not because of pilot errors, but because the engine fail in midair. Who's to blame? After all, everybody knows that gas engines aren't the most reliable thing in the world. They also notoriously require constant tinkering to run smoothly. you can forget about having to crank up the engine over and over. These electric motors will run anytime anywhere as long as there's battery. There's nothing more frustrating than taking your helicopter to the field only to find that it won't start because it is too cold, too humid, or just because the engine wants to act up.

Begin Your RC helicopter Hobby

If you want to seriously get into theRC helicopter hobby, then a glow engine chopper is perfect for realism, building, maintaining and flying! You will be able to personalize your chopper exactly the way you want it, like hover time and rotor speed. Once you get a feel for your helicopter, and have everything adjusted perfectly, your helicopter will fly just the way you want it and not the way some factory decided it should.

I’m a beginner RC helicopter pilot, the best power source for me is electric. Electrically powered chopper engines are still very fast, but yet still quiet. Another main attraction to electric helicopters is the fact that you don't have to deal with messy fuels or with tuning the engine at all. Plus fuel cost money and electricity is much cheaper. If you are a beginner then I definitely recommend that you get an electric powered RC helicopter .


  
In my opinion,the next challenge beginner helicopter pilot's face is learning how to fly their chopper. This is a big problem since a helicopter is the hardest aerial vehicle to fly and having a miniature version of one doesn't make things easier. If you have no helicopter flying experience and you try to fly it, most likely it will crash into the ground. To save yourself frustration you need to learn how to properly put it together and fly it.