Ronald Valentine Engines

The finest miniature engines in the world

Ruppert Mk III
Ruppert Opposed Twin 9.6cc Diesel Engine

Technical Data:



Bore                              18.4 mm
Stroke                           17.9 mm
Rpm                          11,300 rpm
Power                           1.13 Hp
Total combustion            9.6 cc
Weight                           470 g
Intake                          rear drum


Mr. Ruppert was the designer of these engines. Webra Manufactured the Mk II under license for about one year. The engine was too expensive and the Webra crank shafts weren't manufacture properly. The Ruppert's were far better. Mr Ruppert repaired many of the opposed twins manufactured by Webra in Berlin


1974 Ruppert Opposed Twin Diesel Engine

1974 Ruppert Boxer 9.6cc 

Ruppert Opposed Twin 9.6cc MkIII

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