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 Post subject: Re: Range Chart
PostPosted: Thu Apr 18, 2013 2:55 am 
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Joined: Tue Apr 09, 2013 2:23 am
Posts: 59
Location: Rodeo, CA
Hi Tony,
Are you going to move the range chart from a draft to some other release level? I have been able to verify quite a few of the points over the past three weeks and it looks like an excellent guide for us Noobs out here.

Thanks for the research.

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 Post subject: Re: Range Chart
PostPosted: Thu Apr 18, 2013 4:01 am 
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Joined: Wed Nov 14, 2012 9:50 pm
Posts: 3835
Location: San Diego
boredcleaner wrote:
Hi Tony,
Are you going to move the range chart from a draft to some other release level? I have been able to verify quite a few of the points over the past three weeks and it looks like an excellent guide for us Noobs out here.

Thanks for the research.


I was hoping I'd have a Gidmeter to use on the Rav4 by now, but I don't. So, ya,mi need to move it out of "Draft" I guess.


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 Post subject: Re: Range Chart
PostPosted: Mon Jul 15, 2013 9:29 pm 
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Joined: Thu Feb 28, 2013 11:00 pm
Posts: 125
Tony,
Any updates on the chart now that I've taken the car on BC2BC?


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 Post subject: Re: Range Chart
PostPosted: Tue Jul 16, 2013 3:22 am 
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Joined: Wed Nov 14, 2012 9:50 pm
Posts: 3835
Location: San Diego
ehelmholtz wrote:
Tony,
Any updates on the chart now that I've taken the car on BC2BC?


Oh, I'd say that I know the car pretty well now!! I did a lot of 150 mile legs, and the crème de la crème was my 151 mile uphill trip from Orland, California to Yreka, California, with a 3900 foot pass crested within 30 miles of the end.

I have my notes in the iPad (which is dead right now).


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 Post subject: Re: Range Chart
PostPosted: Thu Aug 01, 2013 5:56 pm 
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Joined: Thu Jul 18, 2013 5:04 pm
Posts: 117
Location: Simi Valley, CA
Is there a printable non-draft version of the chart? I'd like to keep a copy in my car. Thanks for all the work that went into this.

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 Post subject: 60mph vs 70mph vs 80mph
PostPosted: Tue Aug 06, 2013 7:30 pm 
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Joined: Sun Aug 04, 2013 1:03 am
Posts: 25
A gas vehicle traveling at 80mph would waste 30% more gas than if it was driving at 65mph. Heres a chart:
http://www.fueleconomy.gov/feg/images/s ... 012_sm.jpg

So question is, whats the chart like for the Rav4 EV. The reason I ask is because I have been driving at 60 to 65mph and I find it very difficult going north on the 15 from San Diego. Everyones doing 75-80mph and thats what I am normally used to and what I prefer.

How many miles on a full charge can I get at 80mph vs 65mph?

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 Post subject: Re: 60mph vs 70mph vs 80mph
PostPosted: Tue Aug 06, 2013 8:47 pm 
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Joined: Thu Jan 17, 2013 11:13 pm
Posts: 1575
Location: Los Altos, CA
There are some informative charts on the Tesla Motor Blog site here, which I have shown below for convenience.

Image

This chart shows the total range vs. a fixed speed. The overall height of the curve is a function of battery size. The slope of the curve is a function of aerodynamic drag.

Image

This chart shows energy consumption vs. speed, which shows more clearly the parabolic shape of the aerodynamic drag. The interesting thing about this graph is that the the separation between the Roadster curve and the Model S curve is nearly constant from 45mph to 80mph. What this means to me is that the total drag force (proportional to V^2 * Cd * Frontal Area) is about the same between the two cars. The Model S has a lower Cd, but the Roadster has a smaller frontal area. Since the RAV has poorer aero, but less weight than the Model S, I would expect it to start between the blue and green curves, but then head higher and cross over the blue curve up towards about 417 Wh/mile at 80. This figure comes from Tony's range chart, which shows 100 miles an for Extended Charge at a constant 80mph. Tony's figure for 45mph (213Wh/mile) is also between the blue and green curves, so that seems to confirm my theory that the RAV's curve crosses over the Model S curve.

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 Post subject: Re: Range Chart
PostPosted: Thu Nov 07, 2013 10:18 pm 
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Joined: Thu Aug 29, 2013 5:22 pm
Posts: 15
Hey Tony, you take that document out of Draft yet?

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 Post subject: Re: Range Chart
PostPosted: Thu Nov 07, 2013 10:19 pm 
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Joined: Wed Nov 14, 2012 9:50 pm
Posts: 3835
Location: San Diego
keith5885 wrote:
Hey Tony, you take that document out of Draft yet?


Actually, I did, but didn't post it. Thanks for reminding me.


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 Post subject: Re: Range Chart
PostPosted: Mon Nov 11, 2013 7:58 pm 
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Joined: Tue Oct 29, 2013 4:42 pm
Posts: 11
Location: El Dorado Hills, CA
TonyWilliams wrote:
keith5885 wrote:
Hey Tony, you take that document out of Draft yet?


Actually, I did, but didn't post it. Thanks for reminding me.


Am I missing something? I can't find this elusive yet helpful chart...

Did I forget the secret handshake?

Scott

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