On Nov 1, 2:49*pm, "vaughn"
wrote:
"Andy" wrote in message

...

*This still
leaves total climb capability a bit over 4,500 feet so the straight
cruise must get more out of the motor than a sawtooth, though I am not
clear why this would be true.

One good reason is because the whole electrical system, especially the
battery itself, is more efficient when operated at lower currents. *At
higher power outputs, a greater percentage of the battery's precious stored
energy turns into waste heat, so less of the battery's stored energy is
available to actually propel your aircraft..

Vaughn

True - though I was under the impression that a sawtooth profile is
more efficient for the overall glider-motor system. I'm at a loss as
to why the cruise mode for this system would produce nearly twice the
range of the sawtooth - at least according to math on the various
specs quoted.. The electric motor would have to REALLY hate being run
full out.

9B