Carburetor racing, drag and touring

How to choose an appropriate carburetor ...? With so many aftermarket carburetor with seductive packaging weight certainly make us drool and scared to go crazy shopping goods brands such as air-aunt-aunt without seeing the need. Originally karbu definitely big fast, wrong, maybe yes hehehehe ... Although small karbu if we can find an appropriate setting would be much better.There is little shared knowledge about the ideal formula for determining the size of the carburetor with engine cylinder capacity as well as the desired rpm max power.THROTLE = VARIANT x sqrt (displacement * PEAK)THROTLE Where is the value that we will find, is the diameter of the Venturi / throttle body in units of millimeters that determines the size of the carburetor to be selected. Displacement is the unit cylinder capacity in liters. PEAK is the maximum engine speed that can be generated. VARIANT is a constant determinant of whether you are a special machine or machines of mass production engines. Variant has a range of values up to 0.9 00:56, where the Moto GP motorcycle using the maximum value is 0.9, so that the MOTO GP 125 cc class in which the engine to 14,000 RPM capable berkitir dare wear gambot for 38mm carburetor, while the local bike drag classes are usually sufficient to use 34mm carburetor.For example,We take a standard motor Jupiter z missal, with a capacity of 107cc, want to achieve power at 7500 RPM rotation. Variant used is 0.6So that when incorporated into the formulation is as follows:THROTLE = 0.6 x sqrt (0,107 * 7.500)The result is 16.9 Throtle or if rounding is 17mm, it is a factory standard spec which would have calculated suitable for daily use, comfortable to wear-girlfriend get a free ride for those who need to envy Singles ga kok hehehehe ... same with the spec-motor like this is far from word to make complicated. But if ya down racing out of breath and left trigger to drink coffee while smoking the same opponent at the finish line ..... hehehehehhehe

If we go down the drag racing bike with a motor jupiter z in the 125cc class, usually tuner took PE 28mm carburetor is not without reason, because the task carburetor must be capable of supporting up to 14,000 RPM, just how CDI is able to produce a curve that fits the ignition and opened the engine rev limiter. Karbu ability and focus energy on high RPM should be designed such that the valve and ported chamber able to keep up. Camshaft design with extreme duration and small LSA allows overlapping benefit on high rotation. For lap down not too slow then the compression ratio needs to be improved and optimized combustion chamber is absolute.Well, how big carburetor reamer or a decision to replace the carburetor with a venturi that bigger can be started from this formulation. So a wise decision to produce a great carburetor option is used daily, okay invited turing, or powerful special when encouraged to racing.