hobbit
Well-Known Member
With some deference to this thread, I had my own opportunity for some data-collection on the
recent trip north. There is a notable uphill just into Virginia on I-77, starting around 36.584,-80.742
and grinding all the way up to the top of the ridge before Hillsville VA. I took some stats at the start
and end of the climb, and calculated the loss from GOM miles vs. "real miles". Over a 6.5-ish mile
stretch of the real slope, the GOM dropped by about 13 miles.
This closely matches my previous calculation for the foot-pounds in raising a 4000-pound vehicle
by 1000 feet, which works out to about 6 miles range loss for this particular car. The delta was about
1200 vertical feet in this case, but I was limiting power and climbing at about 58 mph so my baseline
would have been close to 5 mi/kWh on the flat.
If I know elevations at the start and end of a leg, I can easily work in a slop factor in how many "consumed
miles" to plan for, and don't need horror-show websites like ABRP.
_H*
recent trip north. There is a notable uphill just into Virginia on I-77, starting around 36.584,-80.742
and grinding all the way up to the top of the ridge before Hillsville VA. I took some stats at the start
and end of the climb, and calculated the loss from GOM miles vs. "real miles". Over a 6.5-ish mile
stretch of the real slope, the GOM dropped by about 13 miles.
This closely matches my previous calculation for the foot-pounds in raising a 4000-pound vehicle
by 1000 feet, which works out to about 6 miles range loss for this particular car. The delta was about
1200 vertical feet in this case, but I was limiting power and climbing at about 58 mph so my baseline
would have been close to 5 mi/kWh on the flat.
If I know elevations at the start and end of a leg, I can easily work in a slop factor in how many "consumed
miles" to plan for, and don't need horror-show websites like ABRP.
_H*