The Poinsard 25 hp or Mengin Type B is a small, two-cylinder, air-cooled, horizontally opposed aircraft engine built in France. it was manufactured by ÃÂtablissements Pierre Mengin from a design by René Poinsard. Power was around 19 kW (25 hp) at 2,280 rpm.
The first two engines built by Mengin were designed by René Poinsard and are often referred to by his name The Mengin B or Poinsard 25 hp was the first and smaller of the two. Aimed at very small, single seat sport aircraft it went into production from about 1933. Production ceased when France was invaded in 1940.
Data from Horizontally Opposed Aero Engines unless other source indicated