Ronald Valentine Engines

The finest miniature engines in the world

Hoernlein's Profi 1.76
1974 Profi 1.76 cc R/C

Technical Data:


Bore                              13.0 mm
Stroke                           13.5 mm
Rpm                          16,800 rpm
Power                             0.19 Hp
Total combustion             1.76 cc
Weight                          110 gram
Intake                                  Front

1973 Hans Hoernlein started to develop the Profi engines and separated himself from the distributer Graupner. 1974 Multiplex started to distribute the Profi line. Hans manufactured some special Helicopter engines for Schlueter. 1978 Schlueter was the main distributor for the Profi line.





Profi 1.76 cc 

Profi 1.76 new in box

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