rddaos Posted October 12, 2010 Report Share Posted October 12, 2010 Quick question on leaning the mixture for fuel economy. I've read the POH and the tutorial that come with the Cessna 400. My understanding is that the peak TIT temperature is indicated by the blue bar on the TIT gauge, and I should operate about 50 degrees lean of peak (at power settings less than 65%). In fact, best power is reached at 1625 degrees. Well, the blue bars are right in the middle of the red (danger) zone, at about 1800 degrees. 50 degrees lean of this "peak" is 1750 degrees, which is still in the red zone. Moreover, the blue bars don't seem to change position as I change the throttle setting, they're stuck at 1800 degrees. So even if I'm at 50% of power (throttle), I cannot operate at 50 degrees lean of this peak. Also, it appears as I move the mixture setting, I peak out in temperature - not at the blue bars, but at a significantly lower temperature, so I'm not sure if the blue bars truly represent the peak temperature. Any suggestions? If it's as simple as adjusting mixture to hit 1625 degrees, that's pretty easy. But something tells me there's more to it. I'm a little foggy on how this leaning procedure works as you can tell ;D Quote Link to comment Share on other sites More sharing options...
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