The Super Tigre G.30-D of 1956 - 1960 from Bologna, Italy was a 2.47 cc twin ball-race diesel of highly unusual design. It was developed primarily for the FAI control line team race event in which the Oliver Tiger Mk. III was then predominant. It was most likely released to counter the domestic threat posed in Italy by the competing Barbini B.40 Testa Rossa diesel. 

With its rear drum valve induction and well-developed cylinder porting, the G.30 presented a quite distinct design layout from that of the Oliver. It performed at a very high level by mid-1950's 2.5 cc diesel standards, developing well over 0.300 BHP at an unusually high peaking speed. It certainly had the performance to compete in the team race category, but was probably let down by having a higher fuel consumption than the all-conquering Oliver.

A full description and bench test of this fine engine may be found elsewhere on this website.