Ronald Valentine Engines

The finest miniature engines in the world

BWM Diesel Engines
BWM 251 D and 150 D

Technical Data:

Type                           150 D             251 D
Bore                           12.7 mm         15.0 mm
Stroke                        11.7 mm          14.0 mm
Rpm                       12,500 rpm       15,000 rpm
Power                         0.12 Hp            0.27 Hp
Total combustion         1.49 cc              2.46 cc
Weight                          90 g               165 g
Intake                         front             disc valve   



The BWM engines were manufactured by Horst Friese in his company Berliner Werkstaetten fuer Modellmechanik. They produced 12 different engines.


BWM 150 D 1.49cc

BWM 251 D 2.46cc Diesel Engine 

1954 BWM 251 D

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