Knowledge of Lamp

I think many people may have little unpleasant experience in the wild night, just because he carries a lamp is not satisfactory, not convenient to use, the light intensity is not enough, the power consumption is too fast and too heavy or unstable quality… and so on. There are a variety of various types of lamps on the market. Now, let’s learn about what kind of lamp meets you need.

Incandescent

In order to look slightly farther in the night outdoor, it’s unthinkable without incandescent light. It is not an easy thing to make incandescent bulb bright and energy saving. Filled with inert gas in the case of certain power bulb can enhance the brightness. For life expectancy, it’s usually fill with krypton and xenon and it is also a special sacrifice life in exchange for high-brightness, high-power halogen bulb.

For the outdoor point, it needs to take into account the use of versatility, reliability and long-term. The common inert gas bulb is appropriate. Of course, using the high brightness halogen bulb lamp also has its own absolute advantage.

LED

Practical use of high-brightness light-emitting diodes brought revolution in the lighting. Low energy consumption and long life are its biggest advantages. Use several ordinary dry batteries enough to maintain a high-brightness LED dozens or even hundreds of hours of lighting. Now the biggest problem of LED is light condenser.

Divergent light source causing it is almost impossible to illuminate the ground outside the 10 meters at night. The luminescent color also makes the lighting sharp decline in the rain and fog outdoors. Therefore, many lamps use several or even dozens of LEDs to try to improve these problems. Unfortunately, the effect is not obvious.

Now, ordinary LED is still more suitable for camping or tent use as its advantage is near light source.

Lamp bowl

An important factor in determining the quality of lighting is a reflection of the light source - light bowl. The ordinary lamp bowl is silver-plated plastic or metal bowl. For the source of high-power incandescent, metal lamp bowl is more conducive to heat and the diameter of lamp bowl determines the theoretical range.

In a sense, not the smooth light bowl, the better. The best effect of light bowl is a circle wrinkles orange peel. It controls the diffraction of light spot caused by the dark grain effectively and makes the lighting area spot more centralized uniform.

Battery

Many cases you may complain about why the lamps out of charge, and blame to the lamp itself. In fact, the choice of battery is also crucial, in general, ordinary alkaline battery capacity and discharge current is ideal. Its price is low and it’s easy to buy. But it is not ideal for large current discharge. NiMH rechargeable batteries energy density ratio is much higher and its recycling is economy, but self-discharge rate is higher too. Lithium battery discharge current is very ideal and it’s suitable for high-power lamps. But now the price of lithium is still relatively expensive.

Design and manufacture the ideal lamps require rich electronic, materials, mechanical, optical knowledge. Understanding of these fundamentals will help you choose the quality of lamps.

How to Adjust Engine

We all know that it’s very important to run-good engine for the normal use and it may affect the life-span of engine. Here we will learn about the engine adjustment.

Oil
You need to use of not less than 20% castor oil fuel or not less than 15% synthetic lubricant fuel. Generally, it is prohibited to use methane fuel (unless you do not have vegetable oil) and run-in in the case of the oil-rich.

Run-paddle
Use bigger paddle than the normal use to running-commissioning.

Engine fixed
Please fastening the engine in a safe test cell or aircraft (fix body in the same time) correctly, you can ask a friend to help. Please don’t stand near the propeller rotation lines as it may dangerous. You can stand in front or behind to operation after you confirm the propeller is fixed tightly. Stand behind to adjust when the engine is power on.

Oil needle adjustment
Parameters of new engine is adjusted on the standard vaporizer, in this case, we need to prepare for using different standard oil. Please open the main oil needle circle and half circle of idle needle to run-in new machine.

Commissioning
Please use battery that voltage does not exceed 1.5V to the glow plug. Running 10-15 minutes
in the 1/3 opening case of vaporizer, 2/3 opening case for 20 minutes and all-opening case for 5 minutes. Extend time appropriately if there is piston ring.

Run-in 5-10 minutes after completion of the primary run with flight paddle until there is no black oil and metal particles in discharged oil. During the time, oil-poor is not allow, and you can adjust the oil-pin according to the actual situation. Last, start the engine with the starter or start stick, non direct hand.

How to adjust the engine's primary and secondary oil needle? What’s the sequence and method? To reach this, you need to learn about the definition of them.

Main oil needle, also known as high speed needle, it is used for the adjustment of the maximum engine speed. Vice needle, also known as the idle needle or low speed needle, it is used for the adjustment of engine idle. The adjust order of the first adjusted is the main oil needle, and then to idle oil needle adjustment

Please note that model engine is not ordinary toy, please pay attention to the safety of others and your. The child should complete in the assistance of parents. Please immediately rinse with water once the oil splashed into eyes.