Originally Posted by
megan
Can you give an explanation to your statement as to why?
I can't. That's just been my experience. I don't know the "why".
Surely for a serviceable mag and P lead, the rpm drop should be instantaneous - the guy in the video certainly seems to think it should by the speed he goes through the switch positions.
And yet it can be barely detectable initially on a really good mag. We've been discussing above whether this is a peculiarity of the R44 or not.
By way of example, on my R44 the right mag has got 100's of hours on it total and about 70 hours since the last 500 hour mag inspection (approx., I don't have the logs in front of me) and the left mag is brand new, less than 10 hours on it. When I do a mag check right now, in the prescribed "2 seconds", I get a quick and obvious drop on the right mag, albeit nowhere near 7%, and almost no detectable drop on the left mag.