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Estimate The Horsepower of the P75DL
- Thread starter juanmedina
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- Model 3
xmetal
Member
Elon has recently made it pretty clear that the Model 3 will be a great car, but no where near the Model S, so I do not anticipate even the top version of the 3 being able to touch the S in terms of power or speed. The tweets and blog posts about the S being the pinnacle of tech and speed seem to be clearly setting an expectation.
EXOTIC1
Member
But therefore the cells would need to be the same as used in the P100D today. I could definitely see the Model 3 being motor limited, as well. Especially if those new cells increase power density more, than energy density. Which seems likely, since Tesla wants to reduce charging times.
Well there are three ways this could go.
1) More motor power than battery power. This way Tesla spends too much on the motor, without gaining anything.
2) More battery power than motor power. That would be like with most Teslas, besides the S and X PD models. It would be the lowest cost option to reach a certain performance level.
3) They match motor and battery output perfectly. This would be the hardest to achieve, if they keep using regular motors, used in the more mainstream models, for the performance models.
So to me it seems that option 2 seems at least as likely as 1 and 3.
No real evidence, but it seems likely. The power increase from 85 to 90 was higher than the range increase. And it seems they want to charge those new cells more quickly, which should also have an effect on how quickly those can discharge.
Tesla 2170 Battery Cells: Greater Power At Comparable Cost
This article mentions a 2 fold increase in power, while only increasing 50% in size. But to me it seems they just confused power with energy again. (3000mA, seems way too low for Teslas current cells, 15A seems more likely)
wallet.dat
Member
Swampgator
Active Member
Well,
We already know that Tesla has an invertor capable of delivering over 300 kw to a single motor on the model 3
Tesla Model 3 exclusive leaked specs: 300kW+ inverter architecture putting its power capacity near Model S
If they use a smaller motor on the P75D up front as on Model S you still could have 500kw total. Also, we have reason to believe 2170 batteries will offer higher C rates than 18650s.
Tesla 2170 Battery Cells: Greater Power At Comparable Cost
So I see no reason to believe you can't get 500kw which = 670hp.
That should put a 3800 lb P75D 0-60 in about 3 seconds flat.
That's my best guess and still makes it comfortably slower than the P100D Model S
We already know that Tesla has an invertor capable of delivering over 300 kw to a single motor on the model 3
Tesla Model 3 exclusive leaked specs: 300kW+ inverter architecture putting its power capacity near Model S
If they use a smaller motor on the P75D up front as on Model S you still could have 500kw total. Also, we have reason to believe 2170 batteries will offer higher C rates than 18650s.
Tesla 2170 Battery Cells: Greater Power At Comparable Cost
So I see no reason to believe you can't get 500kw which = 670hp.
That should put a 3800 lb P75D 0-60 in about 3 seconds flat.
That's my best guess and still makes it comfortably slower than the P100D Model S
Garlan Garner
Banned
I just wondering what the high end discharge rate is for the 2170 batteries. If the batteries can discharge faster than the previous 1680's then I'm not sure why the capacity of the batteries matters.
In other words.....give me the launch capabilities of the MS P100D.....in the P75D car. Why not? Its just a matter of being able to execute "x" fewer launches with the P75D.
In other words.....give me the launch capabilities of the MS P100D.....in the P75D car. Why not? Its just a matter of being able to execute "x" fewer launches with the P75D.
JeffK
Well-Known Member
Even if they only discharge at the same C rate as the P100D you'd be talking about 75 * 5.67 C = 425 kW and if the vehicle is really 20% lighter for each given capacity then it might be able to have performance around what the older P90DL was capable of.
It wouldn't be as fast as a P100D but it'd be slower by only a few tenths of a second one would think. I could be way off.
Garlan Garner
Banned
They actually get the same motors. The ones used in the regular cars are software limited, the motor is the same in a P85, as in a 60 (I am not sure if the inverter is different, though)
That might be the best option for the Model S, which was originally planned to sell 20k times a year, but not really for the Model 3, where the cost of the motor will have a much larger percentual impact on the cost of the car, than it did with the Model S.
I would say that is actually very possible. The main question is if they even want to go that high, with the performance Model 3, because of cost and competition reasons. 3 seconds would still beat any competition and if they can still achieve a price of less than 70k, that would make more sense than go even higher, but having to ask more for it. If they had to design special lower volume "performance motors/inverters", for example.
I don't think the Model S will be any factor in that decision. Just because the battery is a third larger, they can just put in an even crazier amount of power, even if they might need to go for a 3 motor setup, to sit comfortably on top of the more plebeian Model 3 P75D.
