Quote:
Originally Posted by speyers
Wanted to know if anybody has some field experience using both Slick 4300 or 6300 series magnetos vs. the Bendix 1200 series.
Looking at running LOP at high altitudes with an IO-540 Lycoming engine on an RV-10.
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Not sure how high you are interested in flying. Personal experience- no trouble at 17500, winter time with the Bendix. But then that high, there is so little air (naturally aspirated) that LOP isn't really necessary or wanted, since fuel flow and power is way down anyway. Also, I don't consider overhaul cost of the Bendix much of a downside. Haven't ever done an overhaul, but I've done several IRAN's and they don't cost much at all.
Mike Busch wrote a nice article on high altitude mag considerations.
http://www.avweb.com/news/savvyaviat..._194870-1.html
If you haven't given it thought already, might consider a modern ignition system in at least one side. I do think there is some consensus that electronic ignition in general offers a spark deeper into LOP than magnetos. But, that isn't the only consideration.... well balanced injection is critical as well.