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View Full Version : setting mixture control - a question for the CEM people



XyZspineZyX
10-17-2003, 02:27 PM
i am aware that above 4000m, one must lean their engines by lowering the mixture control (at least on the yaksters).

what about UNDER 4000m, should one leave the mixture at 100% or can one fly effectively with say 60-80% mixture...i'm thinking this could lead a prematurely overheated engine - no? maybe good for short periods for added speed?

thanks in advance,

frank

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XyZspineZyX
10-17-2003, 02:27 PM
i am aware that above 4000m, one must lean their engines by lowering the mixture control (at least on the yaksters).

what about UNDER 4000m, should one leave the mixture at 100% or can one fly effectively with say 60-80% mixture...i'm thinking this could lead a prematurely overheated engine - no? maybe good for short periods for added speed?

thanks in advance,

frank

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XyZspineZyX
10-17-2003, 02:31 PM
No, it'll lead to lower fuel consumption and less power.

Right on the deck, where the air is thick, you can set mixture to 120%, which makes the engine burn a lot of fuel. Up higher, you need to lean it out because the air is thinner. If you don't have enough air to burn the fuel that goes into the engine, you lose performance and get that smoke effect (fuel is not being burnt in the engine). If you lean it out when there's plenty of air, you're not getting all you can out of the engine.

You can lean out the mixture at any altitude just to save fuel, but you usually want it as rich as it'll go.

XyZspineZyX
10-17-2003, 02:54 PM
Also, keep in mind that the altitude at which you need to learn the mixture depends on the plane you're flying (well, technically - on the engine your plane has).


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