Originally Posted by
Cat 1
Its not so much a problem Bert as it never "quit in the air" on me, just an observation - I just noticed it while tuning the idle on the bench. Once the engine warmed up my idle seemed a little thick, so I leaned it and it cleaned up - then on an "extended" idle it would suddenly die. had to go back to the slightly richer setting.. Not really noticeable in the air as I think the airflow pulls the temp down quickly and gets it in the happy zone. With the smaller venturi I am back on the bottom for the entire fuel curve again - I will try a smaller jet and see how it works. - but its running great now.
Ah, OK, yes... The way you describe it, is still conform how I do the "as lean as I can get it". As long as it idles indefinitely it is OK.
The fuel consumption sounds about right: I could get about 45 minutes of "very spirited flying" out of 8 oz of fuel with the OS FXi 46, and easily when used for for example flight training (puttering around at half throttle doing the figure of 8's and squares etc, it would typically consume approx 1~1,5 oz/10 minute session