The thinking here is not unlike what backyard mechanics have been doing for years by oval/offset boring conventional carburetors – that is to change the rate of throttle opening through the throttle range. Instead, it uses a patented “inverted egg” or “keyhole” venturi shape. Like most conventional carburetors, the Lectron® carburetor uses a circular venturi shape. SmartCarb Fuel Systems Chief Technology Officer Corey Dyess had the privilege of working with Red during his final years and has led advanced development of the SmartCarb® since then, winning multiple patents for feature improvements over time. After General Motors acquired Lectron Products, Inc in 1978, Red went on to further develop and refine the metering rod style carburetor, culminating with the SmartCarb® in the early 2000s. Based largely on Red’s designs, the Lectron® carburetor came to market in 1974 and represented a major leap forward for motorcycle carburetor technology with the addition of a float bowl and the use of a flat slide for throttling rather than the cigar cutter or guillotine style sliding venturi from before. Red first pioneered the metering rod carburetor concept with the unique Posa-Fuel and Lake Injector in 19 respectfully. Their founding design principles were developed by the same original inventor: the late, renowned carburetion expert William “Red” Edmonston. The history and heritage of the flat slide, metering rod style carburetor is one shared by both the SmartCarb® and the Lectron® carburetors.
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