Esky 000145 New Lama V4

This Helicopter is super stable and easy to fly. If you can fly a 3 or 3.5channel you can fly one of these. Lama’s have a “head hold gyro” whichmeans it will stay pointing pretty much where you pointed it.

Esky-Lama-V4The design of the Esky LamaV4 RC helicopter adopts a co-axial andcounter-rotating system whichmakes it most suitable for indoor flight. Itscharacteristics are: easy controllable flying, simpleoperation and quick re-charging. The“4 in 1”mix controller integrates the functions of Gyro,Mixer, ESC and Receiver. Two superior 180 motors and one 7.4VLithium battery offer powerfulperformance and long flight times. Thecanopy can be taken apart and re-assembled easily,allowing adjustmentsand repairs to be made very conveniently. It is also attractively finished andpractical.
Features:
(1).Coaxial, counter-rotating blade rotor design provides incrediblestability and positive control.
(2). Full rc system set Included, ready to flight out of box.
(3). Pre-installed 7.5g Digital servos and 4-in-1 control unit.
(4). No installation or assembly required.
(5). Dual 180 motors makes the LamaV4 powerful and efficient.
(6). 800mAh 2-cell Li-Po battery pack is low weight, high power and provides flight durations of 10-15 minutes per chargeThe new 2.4G remote control system adopts Advanced Spread SpectrumTechnology and digital FSK (Frequency Shift Key) codingtechnology.This combined with two digital servos, ensures a rapidresponse, precise control and nimblermovement. With this system,several flyers can operate simultaneously within the same immediateareaoffering a safe and relaxed flying experience. You will be able not only tohover but to controltheesky rc helicopter in all directions. Make slow andfast turns to test your skills – placing the helicopterat chosen pointsaround the room. Having mastered taking-off and landing, you will findcountlessways to enjoy your Lama V4.Attractive color,Conceptiondesign,the unique in its kind. Co-axial counter-rotating bladesystemoffers stable flight and is easy to control. 100% assembled and tested at the factory, ready-to-flyout of the box.

Esky-Lama-V4-RC-helicopterSeveral canopy options provided for the customers.We believe the Lama V4 is notonly the best choice for the beginner butalso great fun for the experienced flyer. It will bringendless enjoyment toyou and your friends. Let’s enjoy the fun flying beyond your dreams.LAMAV4, has been completely assembled in the factory, it can fly after finishing charging the battery.Electronic system has been completelyadjusted by our engineer before packing, no adjustment isneeded.Standard outfit include: a kit, a transmitter, a set of charger, main blade, achargeablebattery, transmitter battery unit (8pcs), aESKYsoftdog and ainstructional Video CD for computer,which are ready to fly out of box.
Just stop here today. If you want know more information, click rctophobby.com for more answers.

Esky Lama V5 Co-Comanche Remote Control Helicopter

Esky manufacturers in response to the national call to care for the earth,environmental protection and energy conservation, to protect our homeland: ESKY original color box packaging gradually replaced purewhite mail order outside the box, all of its packaging products and the useof performance all the same, only packaging is just not the same. Wherein the aerospace rainbow Lynx mall shopping or shopping mall turnover official website every order, aerospace rainbow warehouse stockingrandom stocking and issued pro external box with special requirements, please consult Zhenxin Hobby Online Service, carefully consider re-purchase, when you confirm the purchase, Zhenxin Hobby shipmentsdeemed to have agreed statement.

Esky-Lama-V5-Co-ComancheThe Esky Lama V5 Co-Comanche was designed by TWF as a 4 channelsradio controlled electric helicopter with co-axial, twin rotor blades system.It is easy to fly for the beginner, which possesses the characteristics of high sensitivity and full control of the real helicopter. The Co-Comanchewas designed with separating canopy and fuselage connecting by acarbon fiber rod,which makes it practical and beautiful. The landing skidconsists of three rolling wheels, which can slide automatically whiletaking off and landing. The tail duct rotor blade can turn automaticallyduring flight, which brings you into a real flight state and brings more funfor your flight. Finally, 2.4 Gigahertz equipment use less current tooperate than standard frequency systems. This results in longer flight timeand longer life of your transmitter and receiver batteries.

Esky-Lama-V5-Co-Comanche-rc-helicopterEsky RC Helicopter original Flight SIM cable (EK2-0900A) is includedin the packing, installing the FMS software on the disc, and connectingthe simulator port at the back of the transmitter to the computer’s USB,you can then enjoy almost real flighting experience on your PC or laptopaswell as to practice your flying skills. New 2.4 GHz Spread SpectrumTransmitter,Awesome Look Cabin, Reliable Spread SpectrumMixer/Gyro Control, More Stable Flight, Even First Timer can ControlEasily. Coaxial counter-rotating blades cancel out the rotational torquethat make shovering a conventional helicopter so difficult. Approximately15 minutes flight time on each charge – Optional Li- poly battery will help to achieve better performance and longer flight time.

Walkera QR W100 RC Quadcopter

Apart from the usual iphone controlled quadcopter, the Walkera QR W100 harnesses the power of technology advancement with miniature size quadcopter, measuringdimensions that are comparable to the Walkera Mini CPHelicopter. This is a big step from Walkera, as compared tothe past generations of quadcopters which are big andpowerful. It is clear thatWalkerahas moved on to producemore general range of products that are suitable for all agesand indoors flying. However, the QR W100 is not a normal toy.It is a mini quadcopter droid with real-time FPV capabilities,and on-the-go deployment.

Walkera-QR-W100The radio/phone will received the signal directly from theaircraft.No need to use with the network ,you can flight it atanytime, anywhere. You can enjoy the real control feelingthough the gravity sensor to move the helis/quads to right,left, back and forward. No need to use with the network, youcan flight it at anytime, anywhere. Very cool. Pls stay tunedand try when it is available. The newest Wifi Series Quadcopter, can control the Walkera RC helicoptersor RC carsthrough the WIFI, and can view the video in real time andenjoy the First Person View and have more fun.DEVO7Features: Quad-bearing design.Improved quad-bearingdesign of the Radio sticks makes the control silky andsmoothly. Adopted core technology of DEVO 12,versatilefunction ,high cost performance. 2 Model Type: Helicopterand Airplane. Improved programming with more mixes andbetter interface Program MIX,MIX to Throttle. 7-point throttlecurve makes the control exquisitely. Fifteen-model memory. Online update function: Enjoying update the latest programand copy model data freely and easily.

Walkera-QR-W100-RC-Quadcopter Features:
•The radio/phone will received the signal directly from theaircraft.No need to use with the network ,you can flight it atanytime,anywhere.
• You can enjoy the real control feeling though the gravity sensor to move the helis/quads to right,left,back andforward.And themost fantastic thing is your family members or friends canwatch the video on their iPhone/iPad while you are flying theaircraft.It’s great fun to share the happy feeling.
• iPhone/iPad/Touch is able to control the Mini quad copterflight by WIFI.The control range is about 80m(depend onWIFI net). There is 30W pixel HD camera with this product.
• The Gravity Sensor could be activated to improve the pilot’shand-feeling when use cellphone to control the flight.It willmakemore stable flight and fun.
For more information, please visit rctophobby.com.

Esky Honey Bee Cp3

The original Esky Honey Bee CP2 was without doubt one of our more popular models for beginners who wanted a trainer model that was moreof a challenge than the basic 4ch fixed pitch Honey Bee.
The new Esky Honey Bee CP3 comes with a Li-Polymer battery asstandard meaning flight times of 5-10 minutes; the model is availablewith the latest 2.4GHz technology, high speed digital servos all asstandard.The Honey Bee CP3 is a great challenging beginner’s model for someone who wants a trainer model that can be used outdoors apposed tothe Co-axial models that are solely for indoor use.Other than the obvious aesthetic differences, the CP3 has a totallydifferent design. For example, the landing skids and frame have undergone massive improvements making the heli far more durable. Allthe improvements combine to basically give a stronger and better flyingEsky rc helicopter .

Esky-Honey-Bee-Cp3The CP3 also comes complete with an upgraded GHztransmitter as standard, offering greater range, greater reliability and alower power consumption. The CP3 shares most of the parts with HoneyBee V2 , this keeps the cost of spares down!The Esky Honey Bee CP3 is also a good step up from the Co-Axial rangeof helicopters and will push your skills to the next level.The Honey Bee CP3 comes with everything you need to start flyingincluding transmitter, battery and charger.Here are some highlight features of Honey Bee CP3:
Adjustable Pitch Control System, stainless steel Fly Bar.
The High-power strong magnetism motor equipped with high-efficientradiator is dynamical and effective.
The airplane frame featured simple design and practical use; it caneffectively avoid damage from falls and breaks.
The Motor control system directly controls the tail rotor blade and hasa good head-lock function.
A direct drive tail system provides incredible power and response for tail commands, all while eliminating tail rotor gears for greater efficiencyand less maintenance.
370 super motor provides super power for high performance flight.
Simple mechanical structure design, easy maintenance.
Durable Material, capable of bearing most crashes without anydamage.
High performance main rotor blade significantly increase their strengthfor performing advanced 3D maneuvers.

Esky-Honey-Bee-Cp3-rc-helicopterHelpful in practicing professional 3D aerobatic flight .
Fully assembled and tested in the factory, ready to fly out of box.2.4GHz Radio System provides almost Zero interference signaltransmission, as well as linear control for all motors and servos.
Highlights:
1. A direct drive tail system provides incredible power and response for tail commands, all while .eliminating tail rotor gears for greater efficiency and less maintenance.
2. 370 super motor provides super power for high performance flight.Simple mechanical structure.design, easy maintenance.
3. Durable Material, capable of bearing most crashes without anydamage.
4. High performance main rotor blade significantly increase their strengthfor performing advanced3D maneuvers.
5. Helpful in practicing professional 3D aerobatic flight.
6. Fully assembled and tested in the factory, ready to fly out of box.
For more information, please visit rctophobby.com.

My New Art Tech Single-Rotor Hussar RC Helicopter

Some guys on IRC started talking about planes again,and after doingsome Google work, I was once again hooked. We stumbled uponrctophobby.com and starting clicking. After quite a bit of searching,reading, and forum browsing, we (Eric and I) decided to give their NewArt Tech a try. It is a 4 channels 2.4GHz Single-Rotor Hussar RCHelicopter RTF, so it has everything you need to get started. Just open the box, assemble a few things, and find an open field. Best of all, is that Igot it on sale for $189.99, which really isn’t a bank buster. This kit evencomes with 6 different radio channels, so you and your friends can all flytogether.

Art-tech-RC-helicopterThe detailed factory-painted Hussar looks stunning in the air and closely resembles a real helicopter. Featuring an impressive 4CH 2.4 GHz radiosystem, the Hussar can easily let you hand free flying and at the sametime flying at lightning fast speed.
Hussar is equipped with a high power 180 brushed Motor and two 3.7gServos. It also comes equipped with a gyro sensor for precise flying, andhigh scale LED lighting system adding to the excitement from this high performance helicopter. This impressive Art Tech Single-Rotor Hussar is perfectfor beginners and advance users, since it is highly durable and stable.Art-Tech is well known in designing and manufacturing remote controlhelicopters, and supplied them in the highest quality at competitive prices.Once again they have raised the bars again and delivered us a stunning product once again!
If you`re ready to step up from a coaxial heli,the Hussar is thd best way tomake that transition to 3D helis a successful one. Easy to conrtol 100%ready-to-fly. Especially it’s stable flight also allows beginners to use it to practise.

Art-techThe detailed factorypainted Hussar looks stunning in the air and closelyresembles a real helicopter. Featuring an impressive 4CH 2.4 GHz radiosystem, the Art-tech Hussar can easily let you hand free flying and at thesame time flying at lightning fast speed.Able to loosen stick while hovering, outstanding hovering ability FlightStabilizing System with Gyro Light weight and fast, strong crash resistance ability Newly Designed LED lighting system, beautiful at nightflying Ready to FlyAvailable in Red and Blue.The detailed factory painted Hussar looks stunning in the air and closelyresembles a real helicopter. Featuring an impressive 4CH 2.4 GHz radiosystem, the Hussar can easily let you hand free flying and at the sametime flying at lightning fast speed.
Maybe you are rc enthusiasts, our rctophobby.com  stores have a variety of types, to seek your favorites now!

Dynam Vortex M100 RC Helicopter

This detailed Dynam Vortex M100 is beautifully designed and made in high strength aluminum frame, so it is highly stable and durable. Advanced pilots are impressed with this new amazing helicopter; At the same time it is great for beginners to learn flying.
It is able to fly freely in 4 directions, as a high performance infrared 3.5 Channel controller is included. Built in Gyroscope let it flies stably and smoothly in easy to learn controls. Amazing flight distances, long flying time, and Ready to Fly, Vortex M100 is another welcome addition in our Dynam product line.

Dynam-Vortex-M100The Vortex M100 Coaxial helicopter is a 3-channel RC helicopter, the M100 Vortex, thanks to its integrated gyroscope (gyro) very own stable to fly. The Vortex M100 is ideal for beginners thanks to its simple and precise handling. The Vortex M100 is due to its aluminum frame, tail boom and skids very stable and light. The model helicopter can be loaded easily via the included USB cable to the USB 2.0 port of a computer or via the charging port on the remote control.
Dynam Mini Vortex Features:
Function: Up/down, turn left/right, and move forward/backward
Interference is not a problem with 2 bands of frequencies
Outstanding Hovering ability
Rotor and Altitude Speed Control with Easy Landing Brake feature
Coaxial Structure and Flight stabilizing system with Gyro
Lightweight and fast, highly durable material
Fun for all ages
3.5 Channel Wide Infrared Controls
USB Charge
Ready to Fly

Dynam-Vortex-M100-RC-HelicopterThis model is miniature in size and lightweight, making it incredibly portable so you can take it anywhere you go. It also offers a wide infrared control and a design that is customized for indoor flying. Available in blue, red, and yellow.
If you want to know more info of this product, i recommend to you rctophobby.com.

How to choose children’s remote control cars

The quality of life is getting better and better now, many parents like to give their children to buy toys, especially the remote control cars for Children. Children’s remote control cars, i believe the word is no stranger to everyone, a children’s electric cars and remote control car has become the first choice for every home. It is mainly divided into large and small remote control car, the following word of the children’s remote control car refers to small remote control car! While the small remote control car is characterized by: “in a variety of cars as a model.” Now I will share what precautions to buy it with you.

rc-cars Firstly, the problem of children’s remote control car brand
Brand problem is not that we are referring to the Audi brand’s remote control cars, BMW brand’s remote control cars, i’m referring to the brand as the model remote control car. Parents should be aware of what children prefer the “brand” of remote control cars, so as to better start in life. Of course, if the parents buy a car that children is not not satisfied, wouldn’t it be “embarrassed”. So we are sure to understand the child always wanted to have a car, so as to better buy for the children.
Secondly, the distance of the remote control car
In many cases, when the parents buy remote control car for children rarely ask the remote control distance, now the distance of the remote control car is from 20 meters, 30 meters, 40 meters and so on. In more than a dozen remote control car with a comparison, under normal circumstances, the price of remote control car with the distance of remote control car is equal(of course, this requires exclusion pattern and burning oil remote control cars). So at the time of purchase must be asked in detail about remote distance of the remote control car, so as to let the baby play in the process to experience the fun of remote control car!
Thirdly, the category of battery
For children’s remote control car battery category, mainly divided into two kinds: 5, rechargeable batteries and charging panels.
①There are needless to say about 5 rechargeable batteries, we all know. A 5 batteries can be recharged through the full battery electric vehicles into the tank so that the remote reaches remote effect.
Advantages: Easy to buy, you can buy more than one and ully charged to spare, slightly longer battery life.
Disadvantages: Under normal circumstances, the 5th rechargeable battery sellers will not “send to you” and need the buyer to purchase, the 5th battery charger can also be purchased on their own, this will be more additional cost.

remote-control-cars ②charging panels, a new type of rechargeable battery, nearly two years in the children’s toy market is very popular, through panels on the line to line charging effect. As for the two panels which is good? I was hardly conclusive, only by the needs of the parents to choose!
Advantages: Easy to use, plug and play charge, is the accessories of children’s remote control cars(including battery chargers seller panels will be presented).
Disadvantages: If the power pack life exhausted, it is have a little difficult to buy for yourself, you must go to supporting children’s toy store to purchase electricity board.
Remote control cars are more action, in the selection of an action an action to check the control sensitivity. We should pay attention to during the initial inspection will transmitter antenna to the longest, until everything checks out normal, then gradually shorten the antenna to observe the situation to control the distance shortened. Generally reduced to half the total length of the antenna, and control the distance shortened third are normal. For children under 6 years of age, as long as the selection of single-channel remote control toys can be. Its action is relatively simple, the transmitter is only a button, can control toys transform an action, such as from forward into reverse. For children over 6 years of age, you can choose a multi-channel remote control toys, let the children to master more complex manipulation skills.
I believe that through the above analysis of the details, so that you have a new understanding, i hope the children’s remote control cars everyone can buy as their wishes!

Beginners Guide to Radio Control Airplanes

This instructable is intended to familiarize you with the basic workings of Radio controlled aircraft. It is not a complete guide to everything about the subject, its intended to inform the reader on what is involved and help you choose the right rc aircraft for you.
I grew up around this hobby, my Dad built and sold them back then. Me and him fly them when we get the chance. His airplanes will be pictured here as well as mine. Together we have more than 35 years of tinker time with this hobby. Its both a relaxing and exciting hobby.

rc-AirplanesI must also warn you its addictive and don’t worry we all crash our aircraft, but if you start out with the right trainer and simulator you will repair and fly again.
First a crash course in what the types of aircraft have in common.
Step 1: Common to all types of RC airplanes-Radio
First before you choose the type of airplane you want to build and fly, lets go over what is common to most RC airplanes.
The radio transmitter and receiver: This is your link to the aircraft never scrimp when it comes to the radio, if it glitches you can crash or worse hurt someone. Radios come with two or more channels, the channels are also not what you think, they are not separate frequencies, instead they are each control. Most airplanes have 4 channels, rudder, ailerons, throttle and elevator. Sailplanes have just two or three. Radio transmitters are also on several radio frequencies and are set by the user by changing the matching crystals in the transmitter and receiver. Unless you have a newer radio that uses ultra high frequencies in the 2.4 gigahertz range, these radio’s do not require crystals.
The radio receiver on gas powered aircraft is powered by a rechargeable battery, on an electric it can be powered by the same battery that powers the propeller threw a battery eliminator circuit.

RC-airplanes-RadioThe power is usually 4.6 to 6volts.
I have used several brands, most were good, as long as its a name brand one like Futaba, Airtronics, HiTec, or Tower hobbies (made by Futaba).
Its also a good idea if you plan on having more than one airplane you can get an extra receiver on the same frequency and use one radio with several airplanes. This is what I do, I have a programmable radio with six memories so I can switch between them. I simply bought a receiver for each airplane, much cheaper than another radio.

The correct way of rc aircraft flying

Remote control aircraft is nothing new in today’s life, the current production technology is very mature, there are more variety of products on the market. Many people always make some mistakes when playing, especially some beginners, as the initial excitement of playing often leads to damage of the model. So we have to be very careful when playing.

rc-aircraft The first flight should choose sunny windless weather, and choose a place to ensure flight safety. Remote control model enthusiasts know that even if there is a rich experience flying remote control model of the manipulator, we can’t guarantee every flight is not an accident. Because in addition to the reasons causing the accident flight operator itself, as well as a remote control device sudden collapse, mechanical failures and other reasons are difficult to predict. Therefore, it should be possible to avoid those factors may cause accidents problems. you should choose a Flight place where even though the model plane lost control and crashed, only the model itself without causing damage to other losses. This point is important for beginners. If you go to the flying field and watch other models in flight, you should take the initiative to check first manipulator for use of radio frequencies to avoid waves of the same frequency simultaneously, making the model out of control.
Whenever I have time I will be with the remote control aircraft flying on a wide lawn, however, when we first came into contact with remote-controlled aircraft are still many places need to be strengthened, such as how to fly remote control aircraft to make it safe to fly in the blue sky. There is an old player shared his experiences with me, i also provide some experience about how to fly remote control aircraft properly for your reference.
beginners most likely to commit errors

Remote-control-aircraft
Lack of patience when they fly and push the joystick a ceiling, the helicopter became a space shuttle into the sky. The second error action often occurs when landing or lower the height. Granted to give up control and loss of joystick automatically reset, once the helicopter can’t receive radio signal, propeller that is stopped and the helicopter degenerate ground. Although the helicopters are seismic design, but it is not conducived to extend the model of life.
The right way to flying
Firstly, although the remote control aircraft easy to operate and have a good stability, but it is always a jet aircraft. Only to improve their handling skills in order to fully experience the great fun of remote control aircraft. It is strongly recommended that you must read the accompanying instructions carefully before the test and don’t rush to actually operate. If your child is playing, you must fully grasp the essentials related operations in advance and guide children in time.
Secondly, When you are flying for the first time is given priority to with low flying (2 meters), and feeling the manipulation of the handle, it is not difficult to make remote control aircraft fly high, but if you want to still hover in the low-altitude, Steering and precise fixed-point landing around, that is the great master. But if you want to achieve this level usually requires 5 to 6 cruises (one charge of a voyage), can not be impatient.
]Don’t look down upon these points, but it will really help your remote control aircraft flying in the blue sky, you don’t have to worry about the aircraft will be injured themselves or others. As long as master the above points, i’m sure you can make the remote control aircraft become lively in your hands and do all kinds of difficult moves. Do you want to become the envy of everyone to play remote-controlled aircraft master? Follow my steps take action quickly! If you want to know more info of this product, i recommend to you rctophobby.com.

The common problems and solutions of 450 remote control helicopter

450 remote control helicopter which is the most typical models , it has brought us question is extremely universal, the following I sort out some common problems and solutions on 450 remote control helicopter.

450-remote-control-helicopterFisrt, aircraft nod
Possible Cause 1: The main rotor speed is too low , then it should appropriately increase the throttle hover point , and reduce the pitch hover point .
Possible Cause 2 : horizontal damping apron too hard or severely worn. Then do not use thick horizontal axis washers , and to replace the horizontal apron worn .
Second, when flying loud
The reason : In addition to general helicopter flying outside the big paddle biggest source of noise is the motor , we must first check the motor and gear tooth gap is appropriate noise will be great too tight .
third, airframe vibration
Possible Cause 1: The big paddle imbalance paddle part of the relatively poor quality of the market , both the weight and center of gravity to paddle too much deviation , eccentric vibration during high-speed rotation Solution: Replace the paddle better quality or bigger static and dynamic balance paddle .
Possible Cause 2: The big paddle lock too tight , resulting in large paddle unable to throw off by centrifugal force , resulting in an imbalance Solution: proper locking big paddle , damping can be pulled by hand feel , can not lock tight.
Possible Cause 3: .. tail rotor or tail rotor imbalance is usually much too tight lock this case the appropriate time needed to get a new tail rotor locking paddle tail and large the same requirements .
Possible Cause 4: possible reasons : poor quality motor , not doing balancing idling motor is energized can usually be removed to check , if you feel vibration to be replaced .
Possible Cause 5 : United spindle or bending , inspection methods : Rotate the large paddle observe brake head screws (excluding head screws bending brake factor ) , if found swinging badly , it could be bent shaft , if you replace the spindle after all this, it is bent in conjunction spindle or in conjunction bend will make big paddle imbalance , leading to vibration . then need to change the spindle and the Union .
Possible Cause 6 : horizontal bending , Inspection Method: Remove the side of the big paddle , with 1.5 hex screwdriver to turn the horizontal axis , to see whether the big paddle clips swing with the horizontal axis represents the bend .
fourth, Sometimes sculls

remote-control-helicopterPossible Cause 1 : Balance wing bracket screws loose, inspection methods , hands jammed in conjunction, balanced swing wing , the wing bracket along with them if the balance greatly shaken , it must be loose screws , remove the screws on the back after the plastic screws tightened.
Possible Cause 2: The balance of fixed wing bracket hole copper sleeve bearing wear or damage , check the method above, if the screws are not loose , that is the problem, need to replace the copper sleeve or bearing .
Possible Cause 3 : buckle worn ball check all ball rotor head buckle , if found between axial gap of more than 0.5 to be replaced Fifth, Inverted There sculls
Common cause : to exclude issues paddle and balancing wing bracket , the rotor head is usually worn ball buckle , causing a large gap , it will usually resolve after replacing the ball head buckle.
sixth, Emergency refueling does not lock the tail
This problem is usually caused by a pulley or belt slippage caused inspection methods : hand stuck big paddle tail rotor rotation , check whether the pulley and shaft slipping , usually prone plastic pulley this problem , the problem is relatively much less metal solutions : in other new metal tail pulley shaft and wheels set another new belt tail rotor screws loose Vanda does not lock the tail can also cause this better judgment.
These are the 450 most common helicopter a few questions , of course, a problem encountered by each person will be different , the solution will be different, but the principles are the same, in short, to practice more and more to explore, fight morning talent. Read more at rctophobby.com.