Ronald Valentine Engines

The finest miniature engines in the world

HP 15 Glow and Diesel
1967 HP 15 Glow & Diesel Engines

Technical Data:



Bore                              15.0 mm
Stroke                           14.0 mm
Rpm                          28,000 rpm
Power                           0.37 Hp
Total combustion          2.47 cc
Weight                           155 g
Intake                         disc valve



Paul Bugl designed these team race diesel engines for HP in Austria while designing drone engines for the military.


HP 15 / 2.5cc drum valve racing engine


HP 15 DR Glow
HP 15 DR Glow 

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