Bonanzajohn
New Member
- Joined
- Jul 30, 2024
- Messages
- 19
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- Cars
- @024 Grand Touring
What is the best speed to make it home when have limited battery left? 55? 50?
Hypermilers drive slowly to beat EPA numbers.What is the best speed to make it home when have limited battery left? 55? 50?
It takes about 135,000 slaps to cook a chicken using a meat beaterBut sometimes you just want to char the crap out of a good piece of beef, so you smack it as hard as you can and have yourself a smashed burger
Both are tasty, but the smashed burger leaves you less full, causing you to need to recharge sooner
The patience of the brisket keeps you going all day
The dependence of air resistance on velocity
The force of air resistance clearly depends on the velocity of an object moving through the air:
the larger the speed, the larger the drag force.
F (air) = Kv^squared
( the difference between 70mph and 80mph is HUGE)
plotting this will give you a exponential graph, with higher velocity requiring hugely increasing amounts of power.
However, at low speeds,the air resistance grows linearly with velocity:
F(air) = Kv (plotting the difference between 28 mph and 50 mph is almost a straight line)
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You can drive an ICE car at max velocity and cut your gas mileage in half, or more. I got 8 mpg or 16 mpg in my SL600 V12. That's a 50% swing. All performance ICE cars are like this. Tell me your Lucid is not a performance car...
I don't remember seeing "range" debates on any of the ICE car enthusiast sites I used to visit. It's a meaningless discussion.
if you drive an EV at max velocity you will cut your efficiency in half, or more.
like people, the Lucid battery likes to be comfy...not too hot / not too cold. When it's very cold the electrons don't want to play. When it's hot electrons run away.
Your job today is to figure out which of these formulae more accurately fits the data from a simple experiment. Go out and drive your Air around and see if you care a wit about efficiency.
I was under the impression is was more or less common knowledge that efficiency decreases exponentially with speed. That is to say, the different between 40 and 60 mph is not the same as the difference from 60 to 80, which is not the same as 80 to 100, etc.The impact on efficiency was dramatic! At 80 mph I averaged about 2.3 kwh. At 70 mph my efficiency increased significantly and I averaged 3.8 kwh. I was shocked that 10 miles per hour increase had that much of an impact on my kwh. I tried to control every variable I could to focus on speed's impact. Is this conclusion consistent with others?
Same here.I was under the impression is was more or less common knowledge that efficiency decreases exponentially with speed.