An almost unknown engine manufactured by the known aircraft builder Aermacchi.

“Aermacchi MB2 in a Saltafossi PR-2”

-The MB-2 engine that was designed by Eng. Ermenegildo Preti had a displacement of 750 cc and gave 20 hp at 3000 rpm. It was a four stroke engine.

"Saltafossi PR-2 tryptich"

-Later they mounted a two stroke engine in this aircraft from 1945-46. This engine was also designed by Preti but this one gave 25 CV.