[aprssig] Tesla Field Day mode (versus the rules)

Robert Bruninga bruninga at usna.edu
Fri Mar 1 12:54:15 EST 2019

I just looked at the FD rules, and it looks like using just a hybrid would
sacrifice points, since the battery is recharged by a "generator" and you
could not use points as being a battery station.  It still beats using a
generator though..

A plugin Hybrid has a bigger battery and might operate 20 to 30 times
longer before the engine started, but it still wouild disqualify the
battery multiplier points if the engine recharged the  battery.

A pure EV has 50 to 100 times the battery capacity and would run the
entire 24 hours on battery and have no gasoline component at all.

As to power, it looks like operating at more than 150 Watts divides all
scores in half, and so generally  it is unlikely that many stations haul
out kW linears to Field.

And as Rick Green pointed out, all these cars have to be in the ON or
READY condition to provide external power and the parasitic loads need to
be considered.  A Prius draws about 250 watts just sitting there.  And so
even if no power is drawn, its engine will start up every several minutes.
A plugin hybrid with 20 times the battery capacity has been demonstrated
to run a poertable operation for 6 hours and still only used half the
battery capacity without an engine start.

So it looks like this topic is worthy of a closer look to all the details
and nuances against the variety of rules to optimize the solution.

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