PIREP - Yankee
I had dual impulse couplings, and my left mag failed, so I put mine on the
left side. I connected the manifold pressure line to take advantage of the
timing advance. I would agree with everything that has been reported, easier
starts, smoother running, lower fuel consumption, and actually runs reasonably
smoothly lean of peak, lowering fuel burn even more.
This is an O320 in an AA1-C. I powered back to about 105 KIAS, leaned
aggressively and got down to 3.7 GPH, which yields substantially better MPG
than the stock O235. Of course, that was just out of curiosity, I burn the gas
and pass Tigers in the real world.
Paul Tollini To: Grumman Gang
It is always interesting seeing real operational numbers like this. Dropping down to 3.7 GPH at 105 KIAS in an AA1-C with an O320 is pretty impressive efficiency, especially considering how aggressive leaning usually behaves on traditional setups. I was actually chatting with a buddy who does flight training and tutoring—kind of like how students rely on Assignment Help in Canberra to manage heavy workloads—about how modern ignition timing makes such a noticeable difference in fuel burn. Running lean of peak so smoothly really proves how much energy gets wasted with standard dual mags. I wonder if you noticed any cylinder head temperature spikes while leaning that far out, or did everything stay well within limits?
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