Tune Up machine 2 stroke

TUNE YOUR ENGINE WITH U.S. NOW! Changing the power of 2-stroke engine is really very simple when you know the basic techniques of 2-stroke engines. Most of the errors is to choose a less appropriate combination of components of the machine so the machine actually running worse than standardnya, ever experienced? Since modifying the 2-stroke engines require not only a big budget in funding but also modification strategies. Like the quote graham bell on the first page of the book TWO-STROKE PERFORMANCE TUNING essay, modifications and workmanship that is too excessive (bore up, ported too wide / high) can be painful precisely because the results are far from expectations. But the simple craftsmanship, careful, and postpone for later extreme modification could be the key performance 2-stroke engine.

 2 SROKE CYCLE MACHINE NOT WORKING PRINCIPLE 2 Although invisible to the machine 2 is more simple than 4 stroke engines, with very few components, only the piston within the cylinder, but actually not very complex machine 2 in the calculation: The main use of motion dynamics in a gas engine to generate power. There are different phases that are very influential in the crankcase and cylinder block in at the same time, so the second machine was unable to work more efficiently (just enough 360-degree crankshaft rotation, compared with 720 degrees of crankshaft rotation by engine 4 stroke) is what caused the explosion 2-stroke engine power than the 4 stroke stung. Secret 2-stroke engine power is the primary and secondary compression settings in the machine. This is why we often suggest the rat rider if you want to send the machine to do the whole machine or motorcycle should be packaged and gentlemen, because not enough just to modify the block or head only. Let us examine how the 2-stroke engines work in the gas dynamics: 1) Beginning of the piston is at top dead point (TDC, zero degrees of crankshaft) sparks begin to crack and spread the gas in the combustion chamber and push the piston down as the initial step of business. The driving force of the piston is pressed into the crankcase gases to cause the petals open. Compression on a crutch is important to create a suction force on the reed valve, moreover assisted membrane such as V-Force reed valve with a lot of compression so that even low fresh gas mixture is able to easily enter. At an angle of 90 degrees crankshaft, and pistons are in the maximum negative acceleration, exhaust ported open as a sign of the end of the business step. Hot gas will be wasted by itself out to the exhaust. Compression on a crutch began to weaken during the transfer port begins to open. The pressure in the cylinder must be reduced lower than the pressure in the crankcase in order for the unburned gas can out of the transfer ports during the flushing. 2) Transfer the port is open about 120 degrees before bottom dead point (TMB). Flushing begins. That is fresh out of the ported gas transfer and fused to form a cycle. The gas will move upward toward the back of the cylinder and rotating continued to rinse residual combustion gases from the power stroke. It is important that the rest of the combustion gases must be removed completely, to open up room for the mixture of fresh air into the combustion chamber. That is the key to making big power on a two-stroke engine. The more capable of fresh gas in the compression on the dome of the combustion = more power is created!

 

Now the fresh gas also wasted until the headers on the exhaust. But this fresh gas will not get away with it because it has a compression pressure wave reflection from the end of the exhaust pipe design is good, to bring the package back into the fresh gas cylinder before the piston closes the port hole. This is the uniqueness of SUPER CHARGE effect on 2-stroke engine. This shows how important it is 2 stroke exhaust design, calculations done to reduce the trial n error is needed. The main advantage of 2-stroke engines is that they are able to burn more air / fuel than the engine capacity is calculated through the calculation. An example: 125 cc 4 stroke engine is probably only able to burn a mixture of 110 cc of air / fuel in the cylinder, with 88% efficiency of the manufacturer (possibly lower than that) while the 2-stroke 125 cc engine might burn a standard 180cc air mix- fuel inside the cylinder. Being able to see the difference? Can make a picture of how to design a 4 stroke engine to be able to fight the 2-stroke motorcycle engine?

ported 2-stroke 3) Now the crankshaft has berputah past the bottom dead point (180 degrees) and the piston upstroke beginning step. Compression waves which bounce off the exhaust pipes to bring back fresh gas through the exhaust port (now also serve as the inlet port is not it?) As the piston closes the port then the compression begins. In the crutch, the pressure becomes lower than atmospheric pressure, causing a vacuum and it will open the suction valve reed and put fresh gas into the crankcase. 4) The gas does not burn will be depressed and just before the piston reached TDC, the ignition system will meletikkan sparks and start the ignition process. And the cycle will be repeated. Learn how to process basic 2-stroke engine works. When porting begin to open and closed in the duration of the degree of crutch, our modifications will undoubtedly be on the right path. Ported Tuning Block 2 not to drill 90 degrees ... mantapp:: pro tuning Porting the cylinder designed by engineers to create energy in a certain RPM range resulting in the character of its own machine. Reduce the metal in a ported (exhaust and transfer) means changing the duration, extent of area, volume, and angle ported in order to determine the appropriate energy range and character of the driver's contract conditions. For example, driving on the rocky mountains RM250 necessary adjustments in order to force more contained on lap down - because the middle of the valley and climb the mountain air humidity. How are we able to modify a machine? Previously we have to get as much data and information about the characteristics of standard machine manufacturer. This calculation is important when it comes to porting - extents AREA - DURATION. Ported area size and duration associated with engine capacity and RPM (similar duration Noken not?) Ease of us understand the engine 4 stroke will lead us to a deeper understanding of the dynamics of 2-stroke engines. Easy to make 2 was tighter, easier to make a slow 2-stroke engines. And depth calculations necessary to create a 2-stroke engine Very Fast!.

 CYLINDER HEAD
Cylinder heads can be reshaped to create the character of the machine. Head with small diameter and deep combustion chamber, and squish the width (60% of the area boring) Combined with a compression ratio of 9: 1 will fit perfectly with the character of motocross machines. As well as several other combinations of characters will bring a different medias. Squish width with a high compression will create turbulence in the combustion chamber gas. Measured in units Maximum Squish Velocity, in units of meters per detail. MSV Supercross engine should have around 28 m / s. Need special software to calculate the MSV. In the book graham bell, there is a separate benchmark for determining the character of the engine (power band - RPM range)

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Carburetor Carburetor on the engine 2-stroke is life after modification ported and compression settings. Because the duration of the porting will affect the engine RPM peaks venturi carburetor that fits should be done with caution. In general, a small carburetor has a high velocity and is suitable for characters who rely on the machine torque and power at medium RPM. For 2-stroke 125 cc engine, the carburetor with 34mm venturi would be suitable to compete in Supercross who need the links of torque to power very quickly. Carburetor 36 mm will work for that require speed. REED VALVE Membrane! We have already discussed at length about the importance of valves in this 2-stroke motor. Think of this membrane such as the valve on the engine 4 stroke. The larger valve area with a wide area would be very beneficial to squeeze strength at high rpm. Membranes with tongue totaling 6 or more will be the leader in the race, when the engine with reed valve number 2 or 4 out of breath.

 

There are three decisive factors in the selection mebran: Angle petal, petal Materials, thinness of the reed valve. Secret high-level international mechanical style you will easily get on an artificial membrane v-force, when we have wits to modify the standard membrane with the main prop and home ported membranes. Material petal from a very lightweight carbon kevlar will help akselrasi to supply at high speed. Make sure your machine is supported devices isitimewa before a race. The defeat will hurt if we do not prepare us with the perfect racing machine. Tailpipe Wave energy will be supplied from a lot of counts and proper exhaust design! Diameter, length, especially the five main parts of the exhaust pipe 2 will not be prone areas to create energy at a certain RPM. The area is: Header, diffuser, Dwell, Baffle, and Stinger. In general, a good exhaust must be able to increase power at higher rpm. Make sure keseuaian cylinder engine with exhaust and the RPM will often be used before ordering a muffler. Exhaust tuning Exhaust tuning TIPS FOR BORE UP CYLINDER When you change the engine cylinder capacity, there are many factors that must be considered. Such as: porting, compression ratio, carburetor jetting, silencer, and ignition timing. The size and duration ported exhaust and intake open, compared with the engine capacity and RPM. When the liner wall and crushed to include a larger piston, realize that the transfer port will turn the corner, and ported exhaust will shrink? And when you just do this, then the torque at low RPM will be abundant, and energy diputaran over weakening. Changing the angle of the engine must dilakuakan, as well as with a squish dome ratio should be reset to adjust the diameter of the new piston. Piston greater mean turbulence harder, so the squish should be narrowed. The volume of the combustion chamber dome must be set to adjust the capacity of the new machine. Or the engine will just feels 'stop' at high speed, flat ran away. Even worse would arise detonation. Stay Healthy - Keep the spirit! Let Every Day Could Modification Machine.