"karel" wrote in message
...
Out of curiosity I started to look for fuel consumption figures for the
Jabiru 3300.
I found a figure of 0.46 lbs/HP/hr which is not particularly meaningful to
me.
Moreover it said "at cruise power" without further specification.
So I started to assume 65% powser for cruise, calculating from
the rated power of 120HP this gives some 78 HP.
So 78*0.46 gives me 3.6 lbs/hour, or 6 USG per hour or close to 23
liters/hour.

Is this way of calculating correct and do the numbers seem reasonable?
I had expected this engine to be less fuel hungry than the Lycomings &C...
Do not Rotax claim something like 15 liters/hour?

TIA

PS do not tell me that the rated power of 120 HP is not for
continued application, I knew that. Seems similar to the Rotax 914S.

Isn't that a six-banger with 3.3 liter displacement? I'm surprised it
doesn't use more fuel than that. It revs higher than your average Lycoming
or Continental too.