kiev
Posts: 791
Joined: Sun May 03, 2015 7:15 am
Location: The Heart o' Dixie
Contact: Website

Re: Regen vs Neutral and speed for max range

Wed Nov 07, 2018 6:18 pm

Is the bottom part of the hill (between mile 5 to 17) on an interstate? It seems that going 60-67 mph uphill would be using a huge amount of energy.

Of course it doesn't really matter too much because you know you can always coast or regen as necessary to make it back home--but what an awesome climb and return, thanks for sharing the data it's fun to see how these cars can perform such feats of strength.
kiev = kenny's innovative electric vehicle

Aerowhatt
Gold Member
Posts: 434
Joined: Wed Jan 28, 2015 1:52 pm

Re: Regen vs Neutral and speed for max range

Wed Nov 07, 2018 6:58 pm

kiev wrote:Is the bottom part of the hill (between mile 5 to 17) on an interstate? It seems that going 60-67 mph uphill would be using a huge amount of energy.

Of course it doesn't really matter too much because you know you can always coast or regen as necessary to make it back home--but what an awesome climb and return, thanks for sharing the data it's fun to see how these cars can perform such feats of strength.


Yes, that is I-40 east bound, Speed limit is 65 mph, the whole way to NM-14. I have the option of using old route 66 (which you can do 40 to 45 mph on most of the way instead but after more that 15 attempts I couldn't ever do better than 1% better SOC on old Rt 66 than on I-40, to the north 14 turn off. Often I did worse and it takes significantly longer, so no reason to do it IMO. I try for 66% SOC on the exit ramp from I-40 and usually achieve it. Actually though the miles/kWH average is around 3.6 at that point. As you can see by the destination numbers it gets much worse as the speed comes down and the grade gets steeper.

The car is pretty amazing and I picked the worst end SOC data (strong winds) that I have recorded for that particular trip. Often I get back with SOC from 12% to 19% from the same destination. But if that route were driven "normally" it would be impossible to get all of the way home! Glad you enjoyed seeing the details!

Aerowhatt
2014 cool silver ES, acquired new 4/2015 (42.7ah at ~26K miles)
2014 Labrador Black Pearl ES, acquired new 3/2016 (41.5ah at ~15k miles)

JoeS
Site Moderator
Posts: 3573
Joined: Thu Dec 15, 2011 5:47 am
Location: Los Altos Hills, California

Re: Regen vs Neutral and speed for max range

Thu Nov 08, 2018 8:47 am

Aerowhatt, that is excellent and cohesive information, beautifully supporting your case! I wish I had your discipline in taking those CaniOn snapshots, and seeing your graph just reminded me to download my Tahoe trip Garmin GPS .gpx files.

A couple of procedural questions:

1. Do you push the button on your Android device to take screen snapshots of the CaniOn display during your trip or do you employ some other technique to record and subsequently display the CaniOn information?

2. How did you produce that great altitude and speed vs. distance graph?
EVs: 2 Wht/Blu SE Prem., '13 Tesla MS85, 3 156v CorbinSparrows (2 Li-ion), 24v EcoScoot(LiFePO4)
EV Conv: 156v '86 Ram PU, 144v '65 Saab 96
Hybrids: 48v1kW bike
ICE: '88 Isuzu Trooper. Mothballed: '67 Saab (orig.owner), '76 MBZ L206D RHD RV

Aerowhatt
Gold Member
Posts: 434
Joined: Wed Jan 28, 2015 1:52 pm

Re: Regen vs Neutral and speed for max range

Fri Nov 09, 2018 12:36 pm

JoeS wrote:A couple of procedural questions:

1. Do you push the button on your Android device to take screen snapshots of the CaniOn display during your trip or do you employ some other technique to record and subsequently display the CaniOn information?

2. How did you produce that great altitude and speed vs. distance graph?


For canion screen shots I’m using a cheap android tablet. It has a touch screen so I just use a single tap on the list on the left side of the canion screen which fairly reliably records a screenshot. With the tablet between the two front seats on the console I can get one at any time without looking away from the road.

GPS data is gathered by “pocket earth” (free) which is an app which that I highly recommend. I have it on my iPhone. By recording a “track” on it and exporting it as a GPX file. Then open the file on a desktop in Google earth pro (free). If you right click the name of the file in the left menu pane. One of your choices in the drop down list is “show” elevation data. This throws up the graphs that I posted below the map of the track. Then I pull the border of the graph map interface up to cover most of the map and enlarge the graph. Take a screen shot of it on the desktop computer (png) and edit away the undesirable edges in the photos app by cropping it. The resulting file is what you see posted on the forum.

Hope this helps,
Aerowhatt
2014 cool silver ES, acquired new 4/2015 (42.7ah at ~26K miles)
2014 Labrador Black Pearl ES, acquired new 3/2016 (41.5ah at ~15k miles)

JoeS
Site Moderator
Posts: 3573
Joined: Thu Dec 15, 2011 5:47 am
Location: Los Altos Hills, California

Re: Regen vs Neutral and speed for max range

Fri Nov 09, 2018 10:11 pm

Aerowhatt wrote:...Hope this helps,
Aerowhatt
Yes, thank you!
EVs: 2 Wht/Blu SE Prem., '13 Tesla MS85, 3 156v CorbinSparrows (2 Li-ion), 24v EcoScoot(LiFePO4)
EV Conv: 156v '86 Ram PU, 144v '65 Saab 96
Hybrids: 48v1kW bike
ICE: '88 Isuzu Trooper. Mothballed: '67 Saab (orig.owner), '76 MBZ L206D RHD RV

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