| General > General Technical Chat |
| why is the US not Metric |
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| james_s:
Why do you need to calculate that? Don't they all show the amount of miles remaining? You don't keep a finite bucket of electricity around to fill up the car, you just plug it in and if you're in a hurry you wait until it indicates enough range for the trip you want. The actual kWh you put in is not really relevant in the moment. |
| Simon:
no but for the sake of carrying out any calculation I would want i have to take the reciprocal of that measurement as none of the figures in the measurement are 1. if it was litres per 1 mile that would be usable directly. |
| IanB:
--- Quote from: Simon on October 27, 2019, 04:14:00 pm ---Yes but it's more difficult to calculate what is required of a certain journey which is why it is stupid. So i am going to drive 15m, how much fuel/electricity do I need? the first thing you will do either directly or indirectly is to reverse it to fuel/power per mile or km --- End quote --- Precisely. If your car uses 0.1 litres per mile and you want to drive 15 miles your fuel required will be 15 x 0.1 = 1.5 litres. How could it be simpler? (Or 10 L/100 mi leads to 15/100 * 10, which is basically the same thing.) |
| CatalinaWOW:
These last few posts are typical of metric-imperial arguments. I mean golly. If you are able to do electronics you should be able to handle ratios and their inverses. And use each to their best advantage. It is kind of like arguing whether sines or arcsines are better. Same applies to measurement systems. |
| mariush:
Such estimations are a bit pointless. You get different mileage in towns where you stop and start often, compared to driving on highway or outside towns. As for electric cars, knowing how many kWh were "pumped" is kinda pointless. Consumption will depend on how aggressive you are, if you climb a lot and also if you go down or break often (regenerative breaking) and you'll discharge battery faster in the winter when you heat up the air inside so you won't freeze. Also in the winter, range goes up if you keep the car warm over night, instead of starting from cold. |
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