The Hope Super 60 racing engine was introduced in 1948 as a "manufacturer's statement" of the capabilities of the Hope Engineering Company of Tokyo, Japan, makers of the pioneering Hope "B" 5 cc general-purpose model in both spark and glow-plug ignition versions. The Super 60 does not appear to have been a series production per se, but rather a sincere attempt to produce a limited-edition racing engine which selected Japanese speed fliers could use to challenge the American products which then ruled the roost. The engine is encountered in a range of distinct variants, none of which appear to have been constructed in significant numbers. It runs very well indeed, albeit not at world-class levels of performance.
Full details of the Hope Super 60 may be found on the "Model Engine News" (MEN) website, while information about the Hope range in general may also be found on MEN.