Questions & Answers

Is the Jabiru engine mount suitable for the UL260i ?

Although the UL260i has the same engine mounting points, resulting in the same thrust line and almost the same propeller flange position as the Jabiru 2200, this doesn't automatically mean that a Jabiru engine mount can be used without modification for the UL260i.

If an airframe manufacturer already offers an engine mount for the Jabiru 2200 engine it might be possible to use it for the installation of the UL260i. Why might be?

• Although the UL260i is considerably shorter in the volume behind the engine mount plate when compared to the Jabiru, our engine's starter ring gear has a larger diameter and is further back from the engine mount plate. An existing Jabiru mount might have a cross brace on the top section which interferes with our starter ring gear. If the engine mount does have a top cross brace, it may be feasible to transfer it to the lower section. Since the Jabiru's carburettor will often not allow a horizontal cross brace in the lower section, the brace is placed on the top.
• The UL260i is a larger capacity engine producing more torque and weighing more than the Jabiru 2200. If the safety factors used in the design of the Jabiru engine mount have sufficiently large design safety factors, then it may well be suitable for the UL260i, but this could only be checked if the design calculations are available.

An engine mount designed for the Jabiru 3300 engine is not suitable because the vertical distance between top and bottom mounting points is longer than the Jabiru 2200.