Hi Lawrence,

I've been paying attention to the kWh usage for various kinds of trips over the last several months. In summer, with reasonably careful driving, I could normally get better than 4 miles / kWh. Just like you ;) That was with no AC or other high aux loads. Now that we have cooler weather, it's maxing out around 2 miles / kWh. That's with heat and defrost on.


Do you, or anyone, know if the Leaf miles / kWh meter (lower left of steering wheel) includes all the aux power or is it just the traction power? If the latter, then I would hypothesize that the battery is very sensitive to outdoor temperature. But, this seems extreme.

Peri

------ Original Message ------
From: "Lawrence Rhodes" <primobass...@sbcglobal.net>
To: "Peri Hartman" <pe...@kotatko.com>
Cc:
Sent: 05-Mar-17 9:52:09 PM
Subject: Re: Re[6]: [EVDL] Leaf recommendations?

Starting and stopping it certainly will. However when city driving I accelerate to the speed limit and coast to the next stop if possible using Regen to slow. LR

Sent from my MetroPCS 4G LTE Android device

On Mar 5, 2017 9:45 PM, Peri Hartman <pe...@kotatko.com> wrote:
Temperature could be contributing, but we're not that much colder - high 30s today. I think I'll check the brakes and see if they're dragging. Other than that, I think you are probably better at it than I and have better road conditions - lesser grades, longer blocks without stops, etc. Still, it definitely made a difference for me for city driving.

Peri

------ Original Message ------
From: "Lawrence Rhodes" <primobass...@sbcglobal.net>
To: "Peri Hartman" <pe...@kotatko.com>
Cc:
Sent: 05-Mar-17 9:38:10 PM
Subject: Re: Re[4]: [EVDL] Leaf recommendations?

Seems temperature is an issue. My Leaf shows 4.3 average. Temperature here is 45 F or higher. I also coast as much as possible. LR

Sent from my MetroPCS 4G LTE Android device

On Mar 5, 2017 8:51 PM, Peri Hartman <pe...@kotatko.com> wrote:
I tried a mostly freeway drive today, about 12 miles each way. Going there I averaged 3.0 miles/kwh, coming back I got 3.3, the primary difference probably being elevation change. I did my absolute best to try to stay with 2 balls but I found it took 3 balls to maintain about 56-57mph on the flat. Also there were some short grades where I had to go to 6 balls to keep within 10 mph of the speed limit and longer grades where I need 4 to stay at 50. It's an interesting challenge and experiment. I'll have to try the same trip again limiting to 4 balls and see how much difference there is.

Peri

------ Original Message ------
From: "Lawrence Rhodes" <primobass...@sbcglobal.net>
To: "Peri Hartman" <pe...@kotatko.com>
Cc:
Sent: 27-Feb-17 3:59:01 PM
Subject: Re: Re[2]: [EVDL] Leaf recommendations?

It's one thing safety with too much going on. But my eyes flutter to the power consumption and using the two ball system isn't like keeping an eye all the time on the miles per kwh. I can do it and I have gotten amazing range but when going 25 in the city I'm always coasting up to lights. So again no way having cruise control on saves energy. Saves your brain. Not energy. Those micro adjustments is what wastes energy. Lawrence


--------------------------------------------------------------------------------
From: Peri Hartman <pe...@kotatko.com>
To: Lawrence Rhodes <primobass...@sbcglobal.net>
Sent: Monday, February 27, 2017 1:01 PM
Subject: Re[2]: [EVDL] Leaf recommendations?

I'll disagree, privately. Let me explain. If you are going 25mph and you regulate manually, you are probaby going to vary between 22 and 27 or so. It's just too hard to keep an eye on traffic and other activities
and also watch and control your speed. That much variance, on level
ground, is just not as optimal as the micro adjustments the cruise
control will do to maintain almost exactly 25. If you are in a stop & go situation or on substantial hills, then allowing a drop to 20 uphill and
some excess downhill will be more efficient manually, yes.

If you didn't care about maintaining a constant speed, then I think your most optimal travel would be at a fixed power level. But that just isn't
realistic driving in most situations.

Anyway, I understand your point. I hope you understand mine.

Peri

------ Original Message ------
From: "Lawrence Rhodes via EV" <ev@lists.evdl.org>
To: "ev@lists.evdl.org" <ev@lists.evdl.org>; "ev-requ...@lists.evdl.org"
<ev-requ...@lists.evdl.org>
Cc:
Sent: 27-Feb-17 12:46:49 PM
Subject: Re: [EVDL] Leaf recommendations?

>No.  Yes you have to keep thinking but you will be better able to
>adjust to terrain than the cruise control because it doesn't adjust to >miles per kwh just miles per hour. Lawrence...why don't they make a
>kwh per mile control...Rhodes..would that be a smart cruise
>control...does such a thing exist?
>Also, for example, if you are in a 25mph zone and need to be careful >about your speed, it's true that the cruise control will mostly either
>be drawing power or in regen. But if you need to go 25mph in a
>reasonably flat area, I wager it will do a better job of minimizing
>power use that you will.
>
>Peri

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