hobbit
Well-Known Member
I've been searching through old posts to find any meaningful figures on how elevation change
[taken alone] affects real world range. This thread didn't really get into numbers, but it
should be a simple "mgh" calculation from lifting X amount of mass Y distance, and getting
(some of) it back on the down. Roughly converting feet of height into EV kWh and thus miles
on the flat, for the Kona at a tad over 4000 lb gross I get about 6 - 7 miles lost per 1000 feet
rise, which doesn't seem like a whole lot to worry about unless you're in serious mountains.
How heavy is a typical Model S? Ballparking something over 5000 pounds, that might be closer
to 8 - 9 miles. One benchmark I have is that it takes almost exactly 12 kWh indicated to drive
a Model S from the gatehouse to the top of the Mt. Washington auto road in NH, a rise of 4200
feet and distance just shy of 8 miles. I learned this at an energy/vehicle festival up there
a few years ago. The math for that seems to work out reasonably well: ~ 9-ish kWh for the hill,
and 3-ish for traversing the often rough road.
What are other folks' observations, if any?
_H*
[taken alone] affects real world range. This thread didn't really get into numbers, but it
should be a simple "mgh" calculation from lifting X amount of mass Y distance, and getting
(some of) it back on the down. Roughly converting feet of height into EV kWh and thus miles
on the flat, for the Kona at a tad over 4000 lb gross I get about 6 - 7 miles lost per 1000 feet
rise, which doesn't seem like a whole lot to worry about unless you're in serious mountains.
How heavy is a typical Model S? Ballparking something over 5000 pounds, that might be closer
to 8 - 9 miles. One benchmark I have is that it takes almost exactly 12 kWh indicated to drive
a Model S from the gatehouse to the top of the Mt. Washington auto road in NH, a rise of 4200
feet and distance just shy of 8 miles. I learned this at an energy/vehicle festival up there
a few years ago. The math for that seems to work out reasonably well: ~ 9-ish kWh for the hill,
and 3-ish for traversing the often rough road.
What are other folks' observations, if any?
_H*