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OK Engines

The KF experience officially ended in December 2015 and was replaced by an engine that is more simple and closer to the origins of the non-shfiter categories (hence the OK denomination, an acronym for Original Kart) to give new impetus to what was the queen category of karting only to then, inexorably, fall into decline. The fundamental problem of KF (2007/2015) was of a troubled beginning, due to technical problems definitively resolved only at the moment in which this regulatory cycle came to a close. Among the problems, in the first place, the centrifugal clutch, visibly undersized and with unjustifiably expensive compared to the frequency of its replacement, which gave enormous problems. It was a one-piece expansion-type with 3 friction pads: a solution to be discarded a priori given the excellent efficiency of the Horstman-type disc clutches successfully used in the 100 Junior. Another problem was wiring and cabling, also extremely expensive, delicate and often the cause of missed starts at most inappropriate times. In KF2, equipped with a exhaust throttle valve, the functioning of the valve was often a source of problems on some engines due to the manufacturers’ inexperience in this delicate sector, with the incorrect positioning of the vacuum intake in the crankcase and problems of locking of the guillotine both for design errors and for an excessive quantity of lubricant used on single-speed engines equipped with a cast iron cylinder liner, someone even missing the angle of the guillotine to the exhaust pipe. All these factors led drivers to opt for and choose other categories, especially at the national level: after a timid beginning, the KF disappeared from the minor races and was replaced by the various single-brand trophies. The CIK FIA thus decided to take what good there was in KF, eliminating at the same time the most complicated solutions and harbingers of problems.

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About Vroom International

December was the month of the first changes for the drivers and the last competitions like our Vroom Women Awards and not only…