Rotax launches injected 912iS
Rotax launches injected 912iS

Francis with Rotax engine

 

Francis alongside the Rotax 912-is

 

BRP-Powertrain GMBH (universally known by its product name Rotax) has launched a new model in the Rotax 912 range of lightweight four-stroke power-plants. The 912iS features fuel injection and a digital engine control unit (ECU) and is  claimed to pocess  38% to 70% better fuel efficiency than comparable competitive engines in the light sport, ultra-light aircraft and the general aviation industry.


A three-year development period included more than 1,000 hours on the test bench and 700 test hours in the air, BRP revealed at an international launch for the engine at its Gunskirchen, Austria facility on  March 8. The launch customer will be Slovenian LSA manufacturer Pipistrel Aircraft, and mass production of the engine will start in May 2012.


Power output for the new engine remains 100hp at 5800rpm but dry weight increases by 9lbs (15 lbs if you also add the necessary twin electric fuel pumps and associated components) to take the engine to 140lbs; it is therefore probably too heavy for mant of the current crop of 450kg microlights. The overall engine dimensions remain largely the same, as does the TBO of 2000 hours. Anticipated pricing is that the new engine will be 14% - 17% more expensive than the carburetted 912S.


LAA Engineering’s Francis Donaldson and Ken Craigie attended the launch and were duly impressed with the engine, which will no doubt be finding its way into LAA aircraft before too long.


The April issue of Light Aviation will include a full report on the new engine. The Rotax press release for the engine can be found here.

 

 

Ken alongside the Rotax 912-is final assembly line, in the foreground the latest engine bagged up ready for testing and delivery

 

Ken alongside the Rotax 912-is final assembly line, in the foreground the latest engine bagged up ready for testing and delivery