Rotax 912is Fuel Consumption
in 912iS Technical Questions
11 years ago
Hi people,
I am new here, but I wonder if any members can tell me the actual fuel consumption figures they are getting from a Rotax 912iS.
I have heard all sorts of claims of 20-30% improvements over the 912ULS and can work out that this is probably between 12 & 15.5 litres an hour, but I can't find anything on the net to confirm this.
I am having an aircraft built (with a 912iS) to do a trip for which long range will be critical, so any info will be greatly appreciated. While the iS is obviously the most efficient engine out there, I am trying to ensure that I can do the longest leg of this trip without ferry fuel tanks, which seems entirely possible with the iS, if it really can hit those figures.
I also note that the engine runs in eco mode at throttle settings below 97%. Can anyone tell me whether this is strictly throttle position or partly manifold pressure related. For instance, if I am cruising at 9500 feet with the throttle wide open to gain manifold pressure, which will, of course, be well down on sea level, does the engine run in eco mode then.
Thanks for any advice
I am new here, but I wonder if any members can tell me the actual fuel consumption figures they are getting from a Rotax 912iS.
I have heard all sorts of claims of 20-30% improvements over the 912ULS and can work out that this is probably between 12 & 15.5 litres an hour, but I can't find anything on the net to confirm this.
I am having an aircraft built (with a 912iS) to do a trip for which long range will be critical, so any info will be greatly appreciated. While the iS is obviously the most efficient engine out there, I am trying to ensure that I can do the longest leg of this trip without ferry fuel tanks, which seems entirely possible with the iS, if it really can hit those figures.
I also note that the engine runs in eco mode at throttle settings below 97%. Can anyone tell me whether this is strictly throttle position or partly manifold pressure related. For instance, if I am cruising at 9500 feet with the throttle wide open to gain manifold pressure, which will, of course, be well down on sea level, does the engine run in eco mode then.
Thanks for any advice
