Lawrence Rhodes via EV wrote:
After finding tall skinny tires grip better in the rain thus eliminating that
concern it appears the heavier Tesla has radically different mpge but similar
styling to the total winner Ioniq by Hyundai . The light bubble cars did better
in the city while the Tesla better on the road. In going down the list many
cars you would think should do well were horrible. It seems regen braking must
be part of the equation. I suspect drive trains and aerodynamics can be
improved on many models. Lawrence Rhodes
https://www.fueleconomy.gov/feg/PowerSearch.do?action=noform&path=1&year1=1984&year2=2020&vtype=Electric&pageno=1&sortBy=Comb&tabView=0&rowLimit=10
Weight matters more at low speeds. Aerodynamics matters more at high
speeds. This is in part why a heavy aerodynamic car can outperform a
lightweight but un-aerodynamic car at freeway speeds.
Aerodynamics is a tricky problem. Good shapes are judged as "ugly" by
most people. So most cars are full of stylistic swoops and ridges for
looks. The published specs for drag coefficients are often doctored or
even made up by Marketing.
It's entertaining to read about the battles between AeroVironment and GM
on the EV1 styling. MacCready was a world-class expert on aerodynamics;
he knew what he was doing. But GM's stylists hated the looks, and did
everything they could to "fix" it to suit the eye rather than the wind
tunnel.
--
In software development, there are two kinds of error: Conceptual
errors, implementation errors, and off-by-one errors. (anonymous)
--
Lee Hart, 814 8th Ave N, Sartell MN 56377, www.sunrise-ev.com
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