The carburetor is one of the main components inside our beloved karts. An essential and fundamental element that regulates the right amount of air/petrol mixture flowing into the combustion chamber. After analysing the operating principle of the float chamber/needle type carburetor in the "Technique" section of our magazine and having dedicated an article in the "Under Examination" - the DELLORTO VHSH 30, one of the most used carburetors in the karting world, we decided to focus our attention on another extremely interesting product that has a completely different construction and application philosophy. It regards the DELLORTO VHSB 34, the carburetor used in all classes/engines of the single-brand Rotax. Let's find out about it.
The DELLORTO VHSB 34 is a float/pin type carburetor invented several decades ago for motorcycle applications, in particular for the Aprilia Sport Production 125 models. Over the years it has been optimised, modified and also intended for karting use, not so much with the goal of achieving ever greater performance, but with the wish to supply a product that is easily manageable in terms of carburetion calibration and very reliable even in high stress conditions. In fact, the DELLORTO VHSB 34 is a carburetor that is very close to being a standard product and its main characteristics such as quality, constancy of operation and production tolerance between the various models perfectly suit the racing philosophy on which the Rotax single-brand trophy is based.
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