Thanks to Steve Helms from O.S. Engines North America, I am now testing a new fuel delivery system for the O.S. 91 engine. This system is comprised of a carburator with a pressurized regulator that is capable of regulating fuel pressure as well as flow. The result, an engine that gets “fuel on demand” delivering a very consistent tune from beginning to end. In addition, this system also increases mid range response, which is very important when doing 3D maneuvers “on the deck”. Availability is to be determined, but apparently will be towards the end of the year. Will be available with the HZ motor as well as an upgrade to existing fuel systems. All this information is of course subject to change.
The video below was taken with an iPhone, so the quality is not great, but gives a good idea about power and consistency.
