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Tesla owner drives 452 miles on single charge

techcrunch.com

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Re: Tesla owner drives 452 miles on single charge

#41

Post by jeffwass »

eridius wrote: post #36
babo wrote: post #35

Earlier quoted context omitted.

They do this themselves, at least in Europe. It's scary like hell that they follow each other, neck by neck, hour by hour with the shortest possible tracking distance.

But can't they also talk to each other over CB radio? Seems like that would make it safer. And of course it's a lot easier to see a truck right behind you than it is to see a car.

My uncle did that in his car behind a truck when he realised he had little gas and maybe 50+ miles to the next gas station.

He used his CB to contact the truck in front of him, who welcomed him to draft him along.

During the trip, both my uncle and the driver heard many other trucks call his truck on the CB To warn there was a car tailgating in the draft.

Think he bought the driver lunch when they got to the next town with a gas station.

Re: Tesla owner drives 452 miles on single charge

#43

Post by darkr »

jrockway wrote: post #32
001sky wrote: post #13

Earlier quoted context omitted.

so, basically slower than a pro on a bicycle nice one

Also a lot less energy efficient. They claim 171Wh per mile, that's 147 kcal per mile. On a recent 17 mile ride, I applied 591kJ (141 kcal) of work to the bicycle. So a bicycle ridden by a non-pro is almost 18x more energy-efficient than the car. (Of course more than 141 kcal of energy is required to get your muscles to do 141 kcal of work on the pedals. But not 2500 kcal worth, like the car would require. I wish a 1…

A pro, or at least someone comfortable with averaging 25mph over a long distance; given a relatively flat course, would probably require an average power output in the region of 300 watts. So even if we take the higher speed into account this works out around 12Wh/mile. ..but if we take weight into the equation; assuming the rider and his bike are on the chubby side and work out a combined 100kg - we get 0.12Wh/kilo/mile. Most of the tesla range are over 2000kg excluding passengers, so taken as a Wh/kilo/mile calculation it actually works out around slightly more than 1/3 greater efficiency at 0.086Wh/kilo/mile. Not too bad..

Re: Tesla owner drives 452 miles on single charge

#44

Post by LoSboccacc »

eridius wrote: post #36
babo wrote: post #35

Earlier quoted context omitted.

They do this themselves, at least in Europe. It's scary like hell that they follow each other, neck by neck, hour by hour with the shortest possible tracking distance.

But can't they also talk to each other over CB radio? Seems like that would make it safer. And of course it's a lot easier to see a truck right behind you than it is to see a car.

Still they block the exits for cars that need to merge. Happened once to me, a train of ten trucks slipstreaming right when I needed to take an exit. Couldn't slow down and merge at the end and the head was already after the exit.

Had to match carefully speed and merge the car in a space I wouldn't have used for parking. And the asshole even blew the horn at me!

Seriously, fuck those idiots doing it. Driven for years on highways and all scary things ever only came from truck drivers needing to save those 10 bucks/five minutes.

Re: Tesla owner drives 452 miles on single charge

#45

Post by nixarn »

feld wrote: post #3

I commented in another similar post but it seems to be lost... My friend did 438 miles with his P85 by drafting behind a semi the entire trip. With the extra range (efficiency!) of the P85D I'm certain he could have hit 500, easy. I don't recall how many Wh/mile he was doing but it was crazy low. I'm not sure why he hasn't been contacted about his drive, but Tesla does have the data and he's asked a couple engineers…

As I posted on the other thread (that didn't seem to get a lot of attention), the range is actually worse on the P85D (270 miles on the P85 and 253 miles on the P85D),

Re: Tesla owner drives 452 miles on single charge

#46

Post by ianstallings »

michaelbuddy wrote: post #6

what the heck, 19 hours for what a 7-8 hour trip max? If it's not real world, then why give it a headline? A scooter can get 95 miles to a gallon of gas. To me that's amazing.

Because those poor saps that wrote the article pay their bills by the click.

Re: Tesla owner drives 452 miles on single charge

#47

Post by dzhiurgis »

dclowd9901 wrote: post #40
mdasen wrote: post #25

Earlier quoted context omitted.

Wouldn't switching to neutral increase fuel usage? When you're in gear, the engine is kept moving by the momentum of the car. When you switch into neutral and break the connection between the movement of the car and the engine, the vehicle has to use fuel to keep the engine moving and not stall. Yes, resistance will cause you to slow down quicker in gear than in neutral, but during that time you should be using basic…

Depends how new it is and the car. Older cars still fueled the engine either way. Newer ones cut the fuel themselves, as you intimated.

I think the rule of thumb is that carburetor engines have simplified idle mechanism.

So realistically anything younger than 30 years is more fuel efficient. Also safer.

Re: Tesla owner drives 452 miles on single charge

#48

Post by dzhiurgis »

kennywinker wrote: post #34
asdfkajh2 wrote: post #33

Earlier quoted context omitted.

Of course a bicycle that is what... 1.2x human weight... is more efficient than a car that is probably ~10x human weight, when you measure it by vehicle rather than kcal per mass.

The weight of a car is not optional. If I want to move some mass between point a and point b, and I do it by car, I have no choice but to haul along that extra ~10x my weight. Measuring by kcal/mass ignores this practical reality in favour of a more precise definition of "efficiency". Also if you're riding a bike that weights 1.2x your body weight, you have the wrong bike! Good god!

Neither 4 passengers, pile of groceries, comfortable dry seats, infotainment & air conditioning are optional on bicycle.

In other words apple to oranges comparison.

Re: Tesla owner drives 452 miles on single charge

#49

Post by gambiting »

Hermel wrote: post #38
hkmurakami wrote: post #2

The (imo, more interesting) stats in the video are missing from the article text body: Total Distance: 728.7km, 452.8mi Total Energy: 77.5kWh Average Energy: 106Wh/km, 171Wh/mi Driving Time: 18:40 hours Average Driving Speed: 39.0km/h, 24.2mph Total Stops: 1 hour Total Time: 19:40 hours Max Elevation: 94m, 310ft

It is obviously the speed that makes the difference. This guy only got about 110 miles (180 km) out of a fully charged 85 kWh Tesla, driving on the German Autobahn at 160 km/h: http://www.teslamotorsclub.com/showthread.php/32873-Discharg...

The Tesla is poorly suited for Autobahn driving because it will actually overheat and slow down if you keep driving at 120mph(200km/h) for longer periods of time, and that's not really difficult on the autobahn, especially at night.

Re: Tesla owner drives 452 miles on single charge

#50

Post by feld »

nixarn wrote: post #45
feld wrote: post #3

I commented in another similar post but it seems to be lost... My friend did 438 miles with his P85 by drafting behind a semi the entire trip. With the extra range (efficiency!) of the P85D I'm certain he could have hit 500, easy. I don't recall how many Wh/mile he was doing but it was crazy low. I'm not sure why he hasn't been contacted about his drive, but Tesla does have the data and he's asked a couple engineers…

As I posted on the other thread (that didn't seem to get a lot of attention), the range is actually worse on the P85D (270 miles on the P85 and 253 miles on the P85D),

The P85D is rated at 295 miles. I don't know where you're getting 253 at.

The P85 is 275.

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