Steve Brown
Well Known Member
When I got my airplane back together after getting the E/P mags serviced the airplane ran fine, but different. Power seemed ok, but it sounded different, CHTs were higher, and it seemed more difficult to run LOP.
Email exchange with the builder confirmed he was running custom timing somewhere between the A & B default settings. I had run the standard "B" curve.
Last weekend I put the jumper in to run the "A" curve. CHTs came down and running LOP was easier. However, it seemed to run a little rougher at very low power settings like idol, landing, etc.
OAT was a lot higher during the "A" test, so that could be affecting results and my perceptions. Since all of this is based on my subjective perception so I'm wanting to get (me) calibrated.
Is this expected?
According to what I heave read, the CHT change is expected, but I didn't read anything about LOP operation.
Any E/P Mag users who have experimented with A verses B I like to hear your observations. Also, I guess timing is generic, so generic timing expectations would also be helpful.
Honestly, I could live with either A or B standard setting, but while I'm messing with it I figure I might as well do what makes the most sense. I'm considering custom timing, or just being able to switch between A & B.
Email exchange with the builder confirmed he was running custom timing somewhere between the A & B default settings. I had run the standard "B" curve.
Last weekend I put the jumper in to run the "A" curve. CHTs came down and running LOP was easier. However, it seemed to run a little rougher at very low power settings like idol, landing, etc.
OAT was a lot higher during the "A" test, so that could be affecting results and my perceptions. Since all of this is based on my subjective perception so I'm wanting to get (me) calibrated.
Is this expected?
According to what I heave read, the CHT change is expected, but I didn't read anything about LOP operation.
Any E/P Mag users who have experimented with A verses B I like to hear your observations. Also, I guess timing is generic, so generic timing expectations would also be helpful.
Honestly, I could live with either A or B standard setting, but while I'm messing with it I figure I might as well do what makes the most sense. I'm considering custom timing, or just being able to switch between A & B.