The info that Walter Atkinson gave on airflow under the cowling is very interesting. Explains why I am forever wiping oil of the front lip of cowlings, I couldn't understand why it appeared to be going up and over the cowl.
Is that airflow pattern why piper has gone to the circular inlets way outboard of the cowling and blocked off the area immediately to the sides of the spinner on the Archer 3?
As a lowly instructor, threads like this cause myself and other instructors to question what are we teaching. Almost to the point of losing confidence in what the text books say. If mixture and engine management are parts that are wrong, what other BS is there that is also wrong. However we have no say in what is taut, CASA, the Sylabus, the CFI, the ops manual all dictate..tho shalt teach as is written in the book.