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Model No.: LOS18700
The biggest, pure helicopter engine that OS have ever made delivers the levels of torque and power demanded by top fliers for both F3C and sport applications.
The 15% increase in capacity offers a big increase over the .91 class engines yet still fits in mounts designed for that class. Modification to the cooling shroud is also unlikely.
The distinctive 'blue anodised' cylinder head distinguishes the 105HZ engines from the 91HZ series yet retains the HZ series styling overall.
General internal design is very similar to the 91HZ series and draws on OS's deep experience in creating the best helicopter engines for all classes.
Advantages over 120 size heli engines of other makes: