How mbuynow will fight off eBay on Thanksgiving Sale?

Posted on November 22, 2013 by mbuynow

Mbuynow.com, which is working as an online store focus on supplying the best cell phone batteries, laser pointers, RC products and other electronics products for people all over the world. This online store is going all out to ensure offer the best products for their customers for this year’s holiday shopping season.

This month, mbuynow.com has carried out several promotions for the Thanksgiving Day and Black Friday. In order to thank the support of all the old shoppers, this online store has opened two large pages to promote their products at a super low price.

The first is the Thanksgiving sale which is available for only one week from Nov.24 to Nov.30, and for this event, you can see that there are more than thirty products with special price selling there. And these products were divided into three parts: up to 30% off, up to 45% off and up to 50% off. At the first area, the entire prices are offering a price up to 30% off on sale, and these products are hot sale in the market. While below the discount products, there is also a free gift sent for you once your order has over a certain amount. The free gifts are different from orders over £100, over £200 and even over £300; you can do your own decision among these gifts listed in the certain area.

The second event is the cell phone batteries big sale; this page has listed most of the batteries at this online store. And they are with high efficiency and eco-friendly, selling up to 47% off for the holiday shopping season. At this cell phone battery special page, you can see that there are also three parts included: £5 area, top seller and clearance centre. These cell phone batteries are all manufactured from mbuynow, and under half a year warranty, for all the orders less than 15kg you are able to enjoy the free shipping service to deliver the goods to you.

Mbuynow.com is making its big online push this week, attempting to attract more customers to buy the cell phone batteries, laser pointers and other products with them.

The Difference between Bike Light and Flashlight

Posted on August 16, 2013 by mbuynow

Bike light is a very important tool for the bike riders to ride at night. A few years ago, bike light was developed as a professional product. While before the professional bike come out, many people use the flashlight to make strong brightness.

However, the function of flashlight is limit and they are mainly designed using for climbing, hiking, emergency lighting at home and others. Strong LED light flashlight has its unique characteristics. It concentrates the light by smooth focusing cup, and to make the brightness with strong light shot from the center. Even some light can reach to a distance of 20 meters. For example, if you are riding on a small road, and there is a strong light shoot into the eyes of the driver, so that he cannot see clearly about your position, that may be leading to some bad accidents.

While for the night riders, they need the bicycle light with high anti-seismic property and strong enough power to guide them. Even in the rainy day, the bicycle light requires a high anti-seismic property and good waterproof to ride in the night so that to make sure you can get a safe ride.

Another main feature of bicycle light is its free hand design. As all we can see, a bicycle light is very easy to install on a bike and you can adjust its direction and position effortlessly. Thus, it insures one can ride more safely in the darkness.

Most of the strong light flashlights are use the 18650 batteries, due to it do not have a high require on the seismic performance, and used the spring to fix the battery, once there has something happened on the battery, then the light will suddenly get dark. All the above have shown that the strong light flashlights are not the best choice for night riding.

For a smart bicycle light, it should have some features of waterproof and long time power supply. Most of the bicycle lights in the market are designed to continue working for four to five hours. And they are made of some special materials so that it can be durable for a long time.

Some Questions Hot Discussed about DLE30 Gasoline Engine

Posted on August 9, 2013 by mbuynow

There are some players who have bought DLE30 gasoline engines from mbuynow.com, but they do not know how to install it into their RC airplane. Or some of them find that there are some problems happened during the installing the engine. Read about Introducing the DLE-30 Gas Engine

Here let have a look at what they said:

Quote

“Sandydr: So, I am putting together my first gas engines plane (Slipstream Beaver) and have a few quite basic questions which I am looking for help with. I use gas Zenoah engines on my boats (Also view 26CC Pull Starter for RC Boat Engines GW26i Zenoah CRRCPRO), but this is the first time using electronic ignition and a DLE 30.”

1. Trying to keep the spark plug cap from the spark plug, but it just falls out. Is there some sort of retaining clip that I am missing, or is it just brute force to push it further in?

2. My choke is really close to the firewall. I was planning to attach it to a servo, but I think the hole required so the clevis moves freely would be too big. Are there any suggestions on how to control the choke?

3. So there is a hole in the firewall which is facing the carb. Is it ok to put the gas line, servo lines through this hole? Or should I make a new one to keep the air flow around the carb clear?

4. I was planning on putting the EI module under the carb. Is this ok?
Sorry for if these questions are basic, but I don’t know anyone locally with a gas engine plane, so I am ‘winging it’… Thanks, Sandy”

Yeah, I think this situation is happened for someone else too. Sometimes, we should keep the ignition away from heat that many are mounted above or to the side of the engine. We can make new holes in the servo rods and fuel lines on our airplane. And we can also buy new carb arms and re-position them, or you could also mod the choke arm yourself as many people always do.

Another way is that you can place the CDI unit inside on your airplane as there wasn’t any place to put it up front. If the CDI module is small enough, you can place it on the firewall above the engine; or to put a little plywood shelf there and use Velcro to attach the CDU module to the firewall and shelf.

There are also some new ways to solve this problem; you may try it by yourself!

As the popular of DLE30 gasoline engine, one can easily get the answer from some top reputation RC hobby forums such as RC goup, rcuniverse and flyinggiants. If you still can’t solve your problem, feel free to contact our customer service and

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our team is pleased to help you.

Recommend reading:

A Good Bicycle Light will Do More Helpful for You

Posted on July 29, 2013 by mbuynow

Just in case that some people do not know exactly about how to adjust a bicycle light, I would like to share my own experience to all of you, hope that can help you anyway.

Measure a flashlight, we may take these elements into consideration such as: the luminance, luminous flux, long shots, scattering, range, stability, water-repellency, portability, versatility, calorific value, etc. You can do your own choice according to your needs to choose the right flashlight.

1. LED
The higher level of led, luminous efficiency is higher, the greater electric current of the same led, then the effect of the brightness, so it is not enough to increase the light of the power at the same level.

2. Luminous flux and brightness
Luminous flux and brightness do not have a relation between them. The lights are decided by the luminous flux and area. So we cannot judge the flashlight only by the brightness.

3. Drive
Drive is the core of the LED flashlight to work, and some special functions are also controlled by it like brightness, shift and so on.

4. Heat and Lumens depreciation
If the LED lamps have worked for a long time under high heat, then it will increase the speed of lumens for depreciation. The brightness will become weaker than before, so in order to get a long time operating time, we should choose these materials with good heat dissipation.

5. Light cup and light spot
Generally, the bigger of the light cup, the deeper of the light cup the smaller of the light spot, then it can shot for a longer distance.

6. Range, batteries, light quantity, calorific value
What we used most common is the 18650 battery, that with the diameter of 18mm and length 65mm. Some lights are powered by AAA battery. The main reason why you need to take the battery into consideration is that once your light power off, which type of batteries will much easier to get.

300LM CREE Q5 Mini Flashlight Bike Light

7. Waterproof and durability
Nowadays, most bicycle lights feature waterproof function, while some may not. A water-resistant lighting system allows you riding in the rain and also gives out enough light.

8. Color temperature
Color temperature is another important when choosing LED units and usually expressed with k. Most riders prefer to 4000K-6000K. The color temperature directly affects the way your eyes will perceive light at night. So, for some riders, they think 6000K is too high.

9. Control modes
Either the front bike light or the back side light, the most satisfyingly is they have different modes of working. For example, you switch to a lower light mode when it’s not too dark. Availability of multiple modes means that you can easily manage the battery power and choose whether you’d have a focused beam with wider reach in a straight line or a wider beam that lets you keep a check on the surrounding areas on deserted roads.

All in all, there are so many factors affect a good bicycle light. While a compact, durable and high-intensity road bike light is a must gadget for anyone cycling on the road in dim-light conditions.

Frequently Asked Question of RC Model Aircraft

Posted on July 24, 2013 by mbuynow

As the new RC modelers may have a lot of questions when they begin to play radio control hobbies especially RC model aircraft novices, here I have listed some questions which players always asked:

Q: How weight does the RC model aircraft has?

A: The weight of the RC model aircraft depends on the mode of the airplane, and also based on the weight and size of the engine and electrical devices. Generally, 450 level helicopters are about 1000g.

Q: What fuel oil does the oil engine RC helicopter use for? Can we mix the oil by ourselves?

A: Normally, the oil RC model is using the professional oil, if you don’t want to buy it from the model store, you can buy it from the local chemical reagent shop. And then to mix it according to the proportion of 4:1, 4 for methanol fuel and one castor oil to act as the lubricant.

Q: What are the composition and material of the remote control helicopter?

A: The complexity of the RC helicopter is far higher than that of model aircraft fixed wing, rack, remote control, engine, gyroscope, and the steering gear; Material is stainless steel, alloy, copper, aluminum, ABS, nylon, glass fiber, carbon fiber, etc. While the toy helicopter and fixed-wing aircraft is mainly using the engineering plastics.

Q: Are the metal remote control helicopter more resistant to fall off?

A: There will be a lot of vibration in flight, which requires different material components to cooperate. Once falling, the nylon material can give the impact to minimize, but the metal will fuselage somewhere if variant, that will be repaired.

Q: How long does a new beginner can learn to fly, and will not fall off?

A: This question will vary from person to person, individual power ability and the ability to respond is very important, here I recommend beginners to prepare a practice frame, then the aircraft can play a particularly large blade of protection.

We recommend you to read the following related topic:

How to Choose the Best Materials Suitable for You when Making Model RC Airplanes?

Posted on July 23, 2013 by mbuynow

There are a lot of people are fond of playing model RC airplane, some of them like to buy the RTF (ready to fly) airplane from a store, while some people may prefer to make it by themselves. With so many materials for us to choose, how can we know what is the best for us as each of them has some special functions?

Just follow me here to have a good look at these materials:

1. EPO foam plastic, it will not produce fragmentation and detritus when happened with crash, that’s to say, it has an excellent impact resistance, especially for repeated performance of the drop impact.

2. Polypropylene foam material (EPP), the EPP products has excellent anti-seismic energy absorption performance, and after the deformation it will recovery fast, has good heat resistance, oil resistance, insulating and stays with its light weight, which can greatly reduce the goods weight. It is a kind of environmental protection material, not only can be recycled, but also can be natural degradation, will not cause white pollution.

3. Foam polystyrene board (EPS), EPS foam is a kind of thermoplastic material, has a great performance of heat insulation. It has collected with the functions of Thermal insulation, waterproof, fire prevention and decorative.

4. KT Board, board body wide and light, won’t metamorphism easily and easy to process, you can also print, painting directly.

5. Depron Classic, many people think that depron will be the first choice for the lightweight model RC airplane because it is lightweight and moisture proof.

6. Light Wood
The light wood has the appearance similar to white pine or basswood. The buoyancy is about twice of Cork, has good elasticity and good insulation. This tree is twice lighter than the cork wood, while it’s great in heat and sound insulation, good volume stability, uniform texture, easy to process. Light Wood not only light and with white wood, but also can be insect-resistant ant.

7. Balsa wood
Balsa wood is a light natural wood; it is used only less due to the expensive price. It is a man-made board as similar as the sandwich structure. The honeycomb structure in the balsa has effectively reduced the vibration and noise; what’s more, it also enhances the strength.

8. Air layer board
Air layer plate’s production is mainly made of birch and basswood, which have the characteristics of high strength, good water resistance, small bending angle and good vibration resistance, and it is the optimization of aviation model making.

If you are searching for the right gas model airplane engines, mBuyNow.com will fit all your needs. As we have stocked a wide range of RC model engines and RC airplane engine upgrades. Our superior customer service together with competitive prices will help you have an excellent shopping experience.

The Model RC Power Battery Introduction

Posted on July 17, 2013 by mbuynow

What is power battery?

Engine model which uses the electric motor to act as the engine is called electrical model, while the battery used to drive this kind of motor is the power battery. Due to the big difference between the power battery and other batteries, it is important for the performance of the model RC airplane.

The different types of the battery and its development

There are many kinds of batteries which can be used to act as the model airplane, solar cells, silver zinc batteries, lithium batteries, nickel cadmium batteries, nickel metal hydride batteries, etc. Read RC Battery Comparisons and Characteristics. The solar cell output current slants small, and it must been made larger to support the electric model plane fly, and the cost is very expensive, so little people has interests into that. Silver zinc battery has a strong power, and the big stream of the power makes the life of the battery short. At present, mainstream varieties of batteries used in the model aircraft are nickel series (including the nimh batteries and nickel-cadmium battery) and New lithium battery (including lithium ion battery and lithium polymer battery).

3.7V 240mAh RC LiPo Battery

Why the electric model airplane was popular in European and American in the 1970s, the main reason is that it can be charged repeatedly and has already produced in a mass production. While the nimh batteries showed an extra advantage in offering power 50%-100% more than nickel cadmium battery. But in the large discharge power, it has been obviously lagged behind the nickel cadmium battery for a long period of time. However, in the early 21st century, nimh batteries have been widely used in model aircraft dynamics and become one of mainstream varieties by its small effect on memory, and little pollution to the environment.

In the early days lithium-ion batteries were used as a disposable batteries, it cannot charge, and with a high power, but the

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internal resistance is very big, so they can’t provide larger electric power to support the electric model plane fly. The use of lithium-ion batteries is for military, but now it was used widely for our daily life such as our mobile, camera, PC ect. And it is forward to become the engine of model RC airplane in a long time in the future.

Recommend to read also:

RC Battery Comparisons and Characteristics

Posted on July 1, 2013 by mbuynow

As we all know any new battery breakthrough will most likely makes its way down to the RC and give us improved hobby time. Most popular RC batteries such as lithium-ion, lead acid, and nickel metal hydride batteries offer far better performance than their predecessors. Which one will be better? Let’s have a glance at their pros, cons and characteristics. And read more about How to Choose RC Battery Charger?

RC NiCad battery
NiCad is short for Nickel Cadmium. It uses nickel oxide hydroxide and metallic cadmium as electrodes. A Ni-Cd battery has a terminal voltage during discharge of around 1.2 volts which decreases little until nearly the end of discharge.

Advantage
It is cheap and isn’t too sensitive to overcharging. Compared with other types of rechargeable cells they offer good cycle life and capacity, good performance at low temperatures, and work well at high discharge rates.

To lithium ion batteries, NiCad batteries are more difficult to damage; it can tolerate deep discharge for long periods. Additional, it is the best for fast charging.

Disadvantage
Comes with a heavy body which prevent you carry it with you anywhere. Low capacity, have a higher self-discharge rates than some other types batteries and memory problems are its biggest flaw. NiCad batteries suffer from a “memory effect” if they are discharged and recharged to the same state of charge hundreds of times. Further, the environmental impact of the disposal of the heavy metal cadmium has contributed considerably to the reduction in their use.

RC NiMh battery
NiMh or nickel–metal hydride, it is very different from NiCad. For example, NiMH batteries cannot handle the high rate of charges or discharges (typically over 1.5-2 amps), however, NiCAD batteries can. And the most common sizes are AAA and AA.

Advantage
Compared to Ni–Cd batteries, NiMH batteries have a higher capacity and are less toxic, and are now more cost effective. If handled correctly, NIMH batteries will have a much longer run times than the same sized and weighted NiCAD batteries. So it is always be used for applications that call for long duration but not a high amp load. For large servos that pull a lot of amps or more than 8 standard servos aircraft, it is suggest using the NiCAD batteries. The other feature for NIMh is it has no memory effect and compared to other types battery, Ni–Cd sale at mid priced.

Disadvantage
NiMH batteries can’t perform well in high rate discharge applications, and it can only provide a small fraction of the rated capacity in these instances.

RC Li-Po batteries
Li-Po (Lithium Polymer) is the most popular battery in the world of radio-controlled aircraft, radio-controlled cars and large scale model trains.

Advantage
The advantages of Li-Po are lower weight; increased capacity and power delivery justify the price. Moreover, it does best with a balancing charger.

Disadvantage
Compare to other types batteries, it sales at the highest priced. Needs special care to avoid flat Performance must NOT be overcharged, and it is 3.7 volts per cell.

How to Choose RC Battery Charger?

Posted on June 28, 2013 by mbuynow

Many people are considering buying RC battery charger after they get into electric flight or any electric powered RC vehicle. RC battery charger is one of the single most important items you need to purchase just as the battery charger to cell phone which ensures your phone actually works. (Read RC Battery Comparisons and Characteristics)

But what is the most important function of a RC model battery charger? How much does it cost and how to choose the suitable one? Here we will list some important factors which you need to consider about.

1. Understand Your Needs and Evaluate Features
The first step is to understand what features are available. The functions are based on your anticipated use. If you are willing to spend a little more, what would it be nice to have? So you can get start by compare the features with prices.

2. How it is powered
This is a very important thing you need to consider when purchasing a radio control battery charger. After researching a few chargers, you may find out that some battery chargers can only support 110V AC or 12V DC power. Both of them are not good enough. If you have bought this type of battery charger, then a power supply or a 12v battery need to be purchased. So it is suggest getting an AC/DC powered battery charger.

iMAX B6 Ultimate Balance Charger/Discharge

3. Support multi battery types and come with balancing function
Nowadays, LiPo battery and various forms of lithium chemistry are popular used in the market. Thanks to the development of new technology, there are so many brand chargers are available which support all the rechargeable battery types (NiCad, NIMH, PB, and of course lithium). Thus, one charger will support all your charging needs. However, some RC model chargers haven’t built-in balancing module,

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and you need to get extra balancer. This is a nightmare for your long term enjoyment of hobby. So a multifunction lithium battery charging comes with balancing support is very important.

4. Discharger function
If you have browsed our RC battery chargers category, you will find that most of our items have both charger and discharger functions. Why do you need a discharger for RC model? Draining your NiCad battery packs is an important step in preserving the life of the battery, since NiCad’s suffer from what’s known as the memory effect. Discharge them, and put them on an equalizer. That will equalize all the cells and provide best performance. It is also easy to see if there are any dead cells.

5. Cell counts
This one is likewise simple. RC battery charger includes both the max and the min cell count it will support, as the tiny 1s packs are becoming more and more popular. Cell count is pretty easy to figure out, and most brand ones support at least 6S LiPo cell counts and up to 15 or more NiCad, NIMH celled packs.

On a side note, another factor you need to take into account is multi-port charger. They are becoming more and more popular in the market. Especially the 2-port chargers as well as 4-port chargers.

Some advanced features of a RC battery charger include: intelligent balance charging, internal resistance measurements, PC interface data logging, and built-in cooling fan, etc.

iMAX QUATTRO B6 – 11-18V DC power, 200 Watts (4x50W), supports up to 15 NiCd/NiMH cells, 6 LiPo/LiIon/LiFe cells or 10 Lead-Acid cells, about £90.20 pounds.

Quattro B6AC – 100-120V (380-330W) or 220-240V (380-330W), 200 Watts (4x50W), supports up to 6 Li-ion/polymer cells, 15 NiCd/NiMH cells, about £150.00 pounds, making it the most powerful charger.

iMAX B6 Lipro – 11-18 Volts DC power, charger power up to 50W, discharger power up to 5W, supports up to 6 Li-ion/Fe/Polymer cells, 15 NiCd/NiMH cells, about £22.50 pounds.

iMAX B6 Ultimate – 11.0-18.0 Volts DC power, charger power up to 200W, discharger power up to 25W, supports up to 6 Li-ion/Fe/Polymer cells, 18 NiCd/NiMH cells, about £52.00 pounds.

The RC battery balance charger sale on mBuyNow.com comes with 1 year limited warranty. You can pick out the right one base on your needs.

Are Two-Stroke Engines Better than Four-Stroke Engines?

Posted on June 5, 2013 by mbuynow

Four-stroke and two-stroke are also called four-cycle and two-cycle, respectively. Most of dirt bike, motorcycle or RC enthusiasts are confused about which one has a better performance.

The two types of engine are found in virtually all heavy duty applications such as trucks, ships, locomotives, power generation, and stationary power. But most small engines are two-stroke as they care compact, no need for radiator as they are air cooled, have no sump for oil which can operate upside down or on an angle.

The 4-stroke engine uses a system of valves to control gasoline combustion within the engine block. These valves help lower the heat within the engine block by allowing hot air to escape and keeping engine shafts well lubricated.

The four-stroke has more moving parts so it’s more difficult to reach high rpm without engine failure. 6000 rpm would be the upper limit. For example, a motorcycle with a two stroke engine has a higher acceleration but the 4 one will win after a couple of miles.

Then which one is better for hobby use.

Have a look at what they say.
Paul, “2 strokes are a lot of fun!! They create wacky crazy high horsepower for a small displacement engine, and when they get into the high RPM”

Revitup, “2 stroke…yeah, definitely 2 stroke. More power = more fun! Cc to cc 4 strokes can’t touch a 2 stroke. It is that plain and simple!”

Brandon, “2-strokes are better in speed and acceleration, but 4-strokes you have more control when riding with other riders 2-strokes are for the track when practicing or something.4-strokes are really considered better to be rode in motocross a 2-stroke is out of control and not the kind of handling you want for a bike my opinion 4-strokes are better.”

GW26i Gasoline Engine 2 stroke engine

Michael, “4 stroke engines do tend to ‘waste fire’ the spark plug at the end of the exhaust stroke but this would not cause an explosion, but again here the idea of ‘waste firing’ has nothing to do with the 4 stroke cycle, rather it is a result of the simple design of a motor.”

However, shalem said, the winner is obviously the engine which has been given more time and technology in its development. But nobody knows when the honest “internal combustion” engine is going to get replaced by the next new breakthrough in “Automobile Engineering”.

Should you buy a two-stroke or four-stroke engine? Do you have a favorite one? Feel free to share in the comment.

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