Best range ever of 24kWh Leaf?

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Looks like the highest so far was 188 miles:
http://www.mynissanleaf.com/viewtopic.php?t=7022

Sounds like he was only going 24mph. I think the range record should also include a time component, give the total distance and also the total driving time to attain that distance.
 
VitaminJ said:
Looks like the highest so far was 188 miles:
http://www.mynissanleaf.com/viewtopic.php?t=7022
Sounds like he was only going 24mph. I think the range record should also include a time component, give the total distance and also the total driving time to attain that distance.

Hard to believe. No video. 300 km? Sorry, but physics says - NO. Rolling resistance with Michelin Fuel Saver summer tyres from 2005 (195/65/15) is declared to be these days World Record, with 3.12 hp/h per tire, loaded 250 kg, per 100 km at 30 km/h (30 !!!!!!!!!!!!!!!!!!) = 2.32 kWh

I believe Ecopia tyres can beat that, as they are EU A-class, and Michelin holds B-class so this may give few percent gain.

So 1000 kg car, driven 30 km/h with 4 Michelin Fuel Saver tyres will use 2,32 *4 = 7,28 kWh per 100 km only for rolling resistance.

And energy loss because of friction of mechanisms? And energy loss because of motor efficiency? And energy loss because of battery efficiency?

Sorry. 300 km means 3 x 100 km = 7.28 x 3 = about 22 kWh.
Only for tires.

Maybe I'm not clever, but my battery delivers about 21 kWh and has capacity of 24 kWh.

...and Leaf seems to be slightly heavier than 1000 kg....
 
What you need to establish, to impress people, is a record range under normal driving conditions. Say, 45MPH on a secondary road, on actual roads. Then try for another at 55MPH (I'm not awake enough yet to do metric) under similar conditions but on a highway. People want to know what your device will do for everyday driving.
 
https://www.youtube.com/watch?v=DIluWP_waUs

It seems that GOM estimation at the begining was not so bad...

Today we try to drive one Leaf after another, one with LeafBox and second without, but I wait for owner as he promised to change tires to summer tires. It seems that type of tires (summer/winter) make huge difference so we need to have both cars on factory Ecopia tires.
 
Piro said:
VitaminJ said:
Looks like the highest so far was 188 miles:
http://www.mynissanleaf.com/viewtopic.php?t=7022
Sounds like he was only going 24mph. I think the range record should also include a time component, give the total distance and also the total driving time to attain that distance.

Hard to believe. No video. 300 km? Sorry, but physics says ...
IIRC LRR tyres are somewhere in the range of 7 - 8 Kg/1000Kg friction, so the lowest a 1560 Kg LEAF would require would be 7*1.56*9.8 = 108 N, so about 30 Wh a Kilometer. One might also guess that this record was performed on highly inflated, well worn tyres so I'm confident in using the low LRR number.

At 50 kph, the LEAF aero is about 74 N at sea level

Taken together, 182 N for tyre and aero frictions, so 50 Wh a Km and 15 kWh for 300 Km.

Thanks, Newton. As an aside, sometimes I think the most remarkable thing about Newton's work is the use of Imperial units :mrgreen:
HOW did he not make arithmetic errors !?
 
VitaminJ said:
Looks like the highest so far was 188 miles:
http://www.mynissanleaf.com/viewtopic.php?t=7022

Sounds like he was only going 24mph. I think the range record should also include a time component, give the total distance and also the total driving time to attain that distance.
Also he did this in AZ where higher temperatures mean more battery capacity and less grease friction. IIRC, he also wore a cooled ice vest to keep cool and drove overnight with no AC. Plus he's a hardcore hypermiler. Good luck trying to beat 188 mi.
 
LEAFFan drove his stock 2011 LEAF 151 miles and his 2013 the 188 miles noted previously noted. He is a hardcore hyper miler, but those are actual numbers he obtained in Phoenix, AZ. The 2011 was about a year old so probably had some battery deterioration. I believe he ran the stock tires at maximum sidewall pressure.
 
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