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De Dion Bouton, in the 1890s, had ohv (in a hemispherical head) demonstrably years and possibly a full decade before anyone had ohc. For a British maker, Matchless had an OHV race bike in 1904. And ohv v-twins for 1905 or 1906 ?.In 1948, Norton had had OHV singles for 26 years, and OHC for only 21 years, these were both "hemi" before it was known as such, what you on about ?Or are we only talking twin cylinder ohv Model 7 Norton Dominators ?P.S. As the owner of an early Model 7 Dommie twin, as I like to quote "440 lbs dry, and half the horsepower of a Commando".....
De Dion Bouton, in the 1890s, had ohv (in a hemispherical head) demonstrably years and possibly a full decade before anyone had ohc. For a British maker, Matchless had an OHV race bike in 1904. And ohv v-twins for 1905 or 1906 ?.
In 1948, Norton had had OHV singles for 26 years, and OHC for only 21 years, these were both "hemi" before it was known as such, what you on about ?
Or are we only talking twin cylinder ohv Model 7 Norton Dominators ?
P.S. As the owner of an early Model 7 Dommie twin, as I like to quote "440 lbs dry, and half the horsepower of a Commando".....
