gvgoff99
Well Known Member
I have always had some difficulty finding the sweet spot for leaning in Cruise even with four cylinders monitored and an EIS that has a leaning feature.
In reading Mike Busch's advice about inflight Mag checks and information he and others have published about leaning I started to think "what about combining the two?"
I like simple, so I now do the inflight Mag check but when checking the second Mag instead of flicking it back on immediately I started to lean on one Mag. When things get lean it runs rough (no surprise but it goes from smooth to rough in a tight window and it is very noticeable) but instead of immediately enriching the mixture I flick the second Mag back on. Voila! smooth engine and I don't touch the mixture.
The CHT's and the EGTs all line up well. The CHT's all run in the 360 to 380 range depending on the OAT.
I am puting this out for food for thought and also wondering if anyone else has tried it.
I do have dual P-Mags so the electronic ignition may have an effect.
In reading Mike Busch's advice about inflight Mag checks and information he and others have published about leaning I started to think "what about combining the two?"
I like simple, so I now do the inflight Mag check but when checking the second Mag instead of flicking it back on immediately I started to lean on one Mag. When things get lean it runs rough (no surprise but it goes from smooth to rough in a tight window and it is very noticeable) but instead of immediately enriching the mixture I flick the second Mag back on. Voila! smooth engine and I don't touch the mixture.
The CHT's and the EGTs all line up well. The CHT's all run in the 360 to 380 range depending on the OAT.
I am puting this out for food for thought and also wondering if anyone else has tried it.
I do have dual P-Mags so the electronic ignition may have an effect.