Bicster
Well-known member
[*]
Preliminary RANGE results
- Thread starter Bicster
- Start date
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evnow
Well-known member
DeaneG said:
You need to slow down :twisted:
Actually, they are talking about avg 55 mph. I guess even 65-70 freeway dashes end up with an avg of 55 mph once you consider typical distance to the freeway both at home & destination.
I suggest you log the actual avg mph on a few days ...
garygid
Well-known member
The max speed of 90 will be a motor RPM limitation, not a power limitation.
At 90 mph on level ground only a modest fraction of the max power will be required.
The max power limits two things, acceleration and hill-climbing.
At 90 mph on level ground only a modest fraction of the max power will be required.
The max power limits two things, acceleration and hill-climbing.
garygid
Well-known member
If you have 70% at 70 mph and the rest at some slow stop and go speeds, you might have an average of 55, but that average does not well-describe your trip.
The slow stop and go part has one of the worst range values, and we do not seem to have range estimates for the high-speed part.
The slow stop and go part has one of the worst range values, and we do not seem to have range estimates for the high-speed part.
palmermd
Well-known member
evnow said:
Thats what I was going to say. Time your commute that includes 65mph freeway section and when your including the total time from start to finish you'd be lucky to average 55 (for most people).
palmermd
Well-known member
garygid said:
But this IS how they are representing the numbers so far.
garygid
Well-known member
As presented, the numbers are only vague guidelines, not really sufficient for evaluating real-life range.
"Learning" range-estimation in demanding situations might require do-it-yourself experience.
"Learning" range-estimation in demanding situations might require do-it-yourself experience.
Nubo
Well-known member
DeaneG said:
An energy vs. speed chart has been posted several times. You'll save a decent amount by dropping from 70 to 60mph. Contrary to popular belief, the posted speed limit is a maximum speed, not a minimum :lol: Honestly, I've been trying the last few days to drive as if I were in the Leaf and trying to be frugal with battery power. 60mph in a 65 zone doesn't result in too much of a fuss on a multilane interstate, as long as you stay in the right lane. And if you can fall in behind some truck traffic, you can even be "blameless".
And in truth, for any reasonable distance, the travel time is not going to be drastically different.30 miles at 75mph = 24 minutes
30 miles at 60mph = 30 minutes
evnow
Well-known member
Some interesting info ...
Why 70 Miles Per Hour Is the New 55
http://online.wsj.com/article/SB10001424052748704688604575125510326010610.html
Along with fossil fuel addiction we need to get rid off speed addiction.
Why 70 Miles Per Hour Is the New 55
http://online.wsj.com/article/SB10001424052748704688604575125510326010610.html
Along with fossil fuel addiction we need to get rid off speed addiction.
Bicster
Well-known member
Freeway speed limits are 65 here; I'm surprised the "average" meets that; it must include rush hour. Off-peak traffic is much faster.
I've been trying a more relaxed approach to driving lately, but it's not easy when driving a car that's made to go fast. I think it might be easier in the Leaf, but maybe not, without the noise and shifting cues.
I've been trying a more relaxed approach to driving lately, but it's not easy when driving a car that's made to go fast. I think it might be easier in the Leaf, but maybe not, without the noise and shifting cues.
evnow
Well-known member
Bicster said:
http://seattletimes.nwsource.com/html/localnews/2003434972_traffic17m.html
It is sometimes faster to go on normal roads than freeway ...
ps : as to going slow (i.e. below max !) - I guess it depends on the city. I can regularly drive slower in Seattle than all other places I've driven. Seattle people tend to be more "forgiving" - and it is much easier to merge too.
LEAFer
Well-known member
An age-old EV driver's adage ... "Slow down a little, you'll get there faster!" ... usually true in any long distance tour that requires at least one stop for charging ... or a tour near the limit of your range when you want to avoid a charge stop altogether. It could also be used to justify taking of the scenic route, if that improves your efficiency (miles-per-kWh).
... usually true in any long distance tour that requires at least one stop for charging ... or a tour near the limit of your range when you want to avoid a charge stop altogether. It could also be used to justify taking of the scenic route, if that improves your efficiency (miles-per-kWh).
DeaneG
Well-known member
evnow said:
Unfortunately my present car rewards aggressive driving to an almost ridiculous degree. I imagine the Leaf absolutely will not. It should help me avoid being the fast guy, the way my wife's hybrid tends to.
Interesting about "average" speeds - my commute is basically clear freeway with one long traffic light after the exit. So my speed could be 75mph or zero, with little in between. Not at all the same as say a 60 mph "average" speed from an EV range standpoint.
Grabbed the first EVSE installation survey appt available today, for July19. Woohoo.
I was thinking about AC vs. range on the way home tonight. What about toggling between AC and recirculate so that you only have the AC running to coincide with regenerative braking?
garygid
Well-known member
It does not really matter WHEN you use the A/C, only the total energy used.
Gonewild
Well-known member
New range estimates.
see this story.
http://blogs.forbes.com/energysource/2010/06/11/warning-your-mileage-may-vary/?boxes=Homepagelighttop
see this story.
http://blogs.forbes.com/energysource/2010/06/11/warning-your-mileage-may-vary/?boxes=Homepagelighttop
evnow
Well-known member
Gonewild said:
Not new. It is one of the early ones in this thread. I used it in my list of ranges graphics couple of pages back too ...
Gonewild
Well-known member
Sorry evnow. Did you do a pol on how far we drive?
evnow
Well-known member
Gonewild said:
np.
http://www.mynissanleaf.com/viewtopic.php?f=4&t=414&hilit=poll
jkirkebo
Well-known member
Nubo said:
No problem, the newer ones work just fine down to at least 0F/-18C though you won't get a COP of 3.5 at those temperatures, more like 2.0. At -5C you'd get a very good COP.
EDIT: The newest models have a COP of 2.5 at -15C which should work very well in a car. They work down to about -25C so a back-up resistance heater is of course also necessary but will get very little use.
