DavidWhite
Final Approach
I have an O360A4M and an electric tach. When I'm flying sometimes the RPM is jumpy. It'll go up and down by 15RPMs or so and you can feel it when it does. Anyone know what this might be?
. Anyone know what this might be?
and you can feel it when it does
Can you explain this part David? I don't think I would hear an engine lose 15rpm, or feel it in the controls/seat - or do you mean you have your hand on the instrument, maybe something else?
What happens to the RPM in a steep turn?
Havent really looked. Is that something I need to do?
Are you talking about how it quits running for a split second? Doubt you'd even see it on the tach. It did the same thing with the old tach and the new one is a brand new electronic. Sometimes it'll do it in flight, other times in the air. I've right seate probably 70 hours in that plane.
"quits running"?
That would be sensed without a tach indication, I would hope!
You hear these much better at night.
Am I right?
I have an O360A4M and an electric tach. When I'm flying sometimes the RPM is jumpy. It'll go up and down by 15RPMs or so and you can feel it when it does. Anyone know what this might be?
How does your electronic tach get its rpm data? From the tach drive cable, or is it connected to the mag p-leads?
Fixed pitch or constant speed prop?
Mine (IO520) does the same thing, always has - and I'm not worried about it.
Yer the smart one.. the electronic tach is much more sensitive than the mechanical governor. It will pick up the 1 or 2 RPM deviations in load that the Governor won't.
mag p leads
The FAA allows a tach pickup on the p-leads? Wow, that's stupid.