Ronald Valentine Engines

The finest miniature engines in the world

Frank 6cc EFVI
1940 Frank 6cc EFVI Ignition Engine

Technical Data:


Bore                              20.0 mm
Stroke                           19.0 mm
Rpm                            6,000 rpm
Power                             0.2 Hp
Total combustion            6.0 cc
Weight                           320 g
Intake                          side port



1940 B. Frank Metallwaren und Mechanische Werkstaetten / Klausa near Altenburg in Thueringen designed and manufactured the Frank engines. Frank manufactured a diesel engine call Kolibri 0.75cc after moving to Stuttgart in 1952.


Frank Benziner

Frank 6cc EFVI 

Frank 6.0cc Ignition Engine

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