charles harbert wrote:

Tracy, this is a very interesting question that got me thinking. Do you think
the following would work? If they had  2 positions for full throttle with the
most fwd being full power, and the second being slightly back from that for best
economy, would that be workable? I assume the computer would be connected to the
throttle lever so that it would recognize the positions. Actually, now that I
think about it, you could do this throughout the entire throttle range, just by
making a slight reduction in throttle position to get to best economy.

A long time go when I was drag boat racing, we actually designed a feedback fuel
control system using very fast thermocouples controlling fuel injectors. The
idea was to use exit temp to get max power, but not melt the domes out of the
pistons(classic failure mode, if too lean). The class rules changed that yr so
that no electrically or electronic fuel control systems could be used, so we
dropped the effort. From previous postings, I believe they are using exhaust
temp as the tuning input.

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