I’ve noticed that the mixture control in the GA aircraft I’ve tried seem to follow a bell curve instead of being linear. So from full rich at altitude, as you lean, the fuel flow actually increases, up to peak power, then drops off again.
Is this aircraft specific, or is it just an MSFS thing? I’ve seen it in the Bonanza, 172, etc.
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I have the same issue myself. It’s very odd. Makes it difficult to actually get the mixture correct
I just lean for max fuel flow, which seems to get best power. It’s super un-realistic, you’d think they’d have addressed this by now…
There are many aspects of the sim that were not addressed in 4+ years, but a lot of focus on eye candy.
If they had worked on some of those, programs like Rex, and Activesky may not have been necessary.
Hi all,
first and foremost: I am not a pilot so take my babble with a grain of salt.
I have been flying the bonanza for almost a year but I have never watched the fuel flow when leaning. For me the exhaust gas temp is the parameter to watch when leaning.
Just pull the mix lever back slowly and watch the EGT. When you see it peak put the mix back towards rich a tad (50° temp wise). And that’s it. Always seemed super easy for me.
Regards, Frank
Correct, and that is also how it’s done IRL. But climb up to 12k in the sim and go full rich. The engine will just about quit, which is not realistic at all. IRL it’ll run way rich, but your FF will not drop, and you will not see a massive power reduction.
In a Fuel Injected Lycoming or Continental powered aircraft, the mixture lever is a simple ball valve, and fuel flow is linear. So assuming WOT, if your throttle body is set to deliver 16 gph at full rich, it will deliver around 8 gph at 50%, and so on. This is regardless of altitude, as it doesn’t know, or care how high you are.
I’d think that MSFS, with all the pains they take to make things realistic, would fix this very simple, and very glaring error. I’m amazed it doesn’t come up more often, as mixture management is a big part of flying GA aircraft.