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Vintage RC Helicopters - Hirobo KV-107 Vertol
Hirobo Vertol KV107 (1988)
As can be seen the gestation period for this model was five years from the first display in Japan as a work in progress to releasing as a finished product. It is suspected that the development work did not actually take this long as the prototype model looks nearly the same as the production version and gyro's were readily available though quite bulky. It is more likely the model was withheld until market research indicated this level of complication would be accepted otherwise what would be the point bringing out a model nobody would want or buy.
Once released it was a successful twin rotor design that employed a complicated 'mechanical' mixer system, designed for the OS32 but this proved to be marginal in warm weather. Later upgraded in order to take the fitting a 46 size. Vertol build manual - Manual for early mechanical mixing (missing pages 12 to 16 inc)
Hirobo CH-46 Vertol (2006)
Brought up to date with electronic mixing (eccpm) and 50 size engine. Top of Page (VRHC - Vintage Radio controlled HeliCopters) |
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