Battery at 90%. Slightly downhill. A smidgen of wheel spin on launch. Car in Ludicrous mode with "Max Battery Power" indicating "Ready!"
https://www.youtube.com/watch?v=uO_4NLkWZ7I
https://www.youtube.com/watch?v=uO_4NLkWZ7I
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P85D's are cutting way better than 1.8 60' times. I believe this car will run a 10.9 with the right battery conditions and right track conditions.
If he could cut a 1.6 60', (which lots of P85D's have done) that would shave 2 tenths off of his time. That puts him at 11.0 right there. 1 tenth could be air density, tire pressure, or any number of things.
The downhill gradient on this segment of road is 1.5-2.0% (I'm a competitive bicycle racer, and thanks to the Garmin GPS that is on my bicycle, and Strava, I know the gradients of the roads in my area uncomfortably well).
I'm certain that the uphill time and velocity will suffer significantly. I'll endeavor to duplicate the run tomorrow in the converse direction and report back.
The car performs admirably when "Ready," but when "Preparing" it is discernibly slower. The car takes on average 15-20 minutes to achieve "Ready" status, but will only tolerate two back-to-back 0-100 mph runs before it drops back to "Preparing." It then takes several minutes to once more achieve "Ready" status. It's not slow when in "Preparing," but it certainly loses a step.
I do have an external antenna on the Racelogic system.
I too have observed the disparate times in my 0-100 mph runs, and it addition to gradient variations, a second very meaningful determinate has been the aforementioned issue regarding the duration of "Ready" status. In the second of my back-to-back 0-100 mph runs today (which were separated by the duration necessary to complete a U-turn), the status switched from "Ready" to "Preparing" in the midst of the second (and uphill) run as the car pulled through 50 mph at which point there was a perceptible diminution in acceleration as if the car was suddenly plying through a tarmac coated in a thin layer of molasses.
Looks like v6.2 (2.5.46)
I'll look into Powertools software for an iOS. Is that an App?
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21 inch wheels. Pano roof. But I removed the back seat and the passenger seat in the interest of weight savings for these runs.
OK, not really! But it does have the 21 inch wheels and pano roof, but no third row of seating. Driver weight is 175 lbs.
Thanks for the assessment as it is very informative for those of us considering the Ludicrous upgrade for the P85D.
Very interesting information on the "Ready" and "Preparing" steps. If I am following you correctly here, it seems that you are indicating that it is possible for the car to show that it is "ready", and for that situation to change to "preparing" either prior to, or actually during a time when more power is commanded?
Sorry for all of the questions, but what exactly is the car doing, while it is "preparing"??? Aside from the obvious increase in power demand, is there anything else which seems to make it go into this preparation mode? Can it be avoided? If anyone knows these answers, thanks.
In light of what you describe above Burt, it would seem that being able to predict performance outcomes, such as would be needed in say a bracket race, or even a head to head race, would be more difficult. Certainly performance can be difficult to predict in ICE vehicles too, and performance is influenced in ICE vehicles by weather among several other things.
But I really would like to know what are the things which lead to this "preparation" state, as it seems to at the very least make performance capabilities less predictable, and at worse potentially outright handicap performance from your description above.
Definitely a little for me to think about here as I have a deposit on Ludicrous like some of the other forum members.
And again I appreciate your assessment.
Completely agree with Pete90D.
The head-to-head racing could be a touch tricky. And in fact, much of my testing with the car this week has been in preparation for races against my pals and their various non-EVs.
The get the car "Ready!" you can do everything reported by Pete90D. Another option is to turn the car "on" while it's sitting in your garage, go through the semi-silly sequence of enabling the "Preparing" mode, and while leaving the car to do it's thing, you could go back into your house and eat a sandwich. Once you have finished your sandwich, the car should be "Ready," unless you are a particularly swift consumer of sandwiches.
But in all seriousness, this is a vulnerability of the Ludicrous mode. I know that ICE cars can overheat their engines, clutches, supercharges, etc. But the P90D in Ludicrous mode at Max Battery Power loses significant power after only two or three long runs.
All of my runs were performed at 6000 feet above sea level, which likely makes the car slightly faster due to lower air density. But the lower oxygen content of the air at this altitude would reduce the power of the engine. Kidding!
Completely agree with Pete90D.
The head-to-head racing could be a touch tricky. And in fact, much of my testing with the car this week has been in preparation for races against my pals and their various non-EVs.
To get the car "Ready!" you can do everything reported by Pete90D. Another option is to turn the car "on" while it's sitting in your garage, go through the semi-silly sequence of enabling the "Preparing" mode, and while leaving the car to do it's thing, you could go back into your house and eat a sandwich. Once you have finished your sandwich, the car should be "Ready," unless you are a particularly swift consumer of sandwiches.
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As the car is only good for 2 or 3 really hard extended pulls in a row while in "Ready!" mode, I'll plan on coming up with some particularly engaging stall-tactics so as to allow my battery time to regain it's ideal temperature between runs. Showing others the amazing storage capacity of a car that lacks a large combustion engine and accompanying transmission is always good for at least a few minutes of stalling. And this might be extended to 10 minutes if a small selection of sandwiches and beverages is available in the "frunk."
But in all seriousness, this is a vulnerability of the Ludicrous mode. I know that ICE cars can overheat their engines, clutches, supercharges, etc. But the P90D in Ludicrous mode at Max Battery Power loses significant power after only two or three long runs. I'm pretty sure I'll beat my pal's 2012 911 Turbo in a 0-100 race. And I bet I'll beat him in a roll from 20 mph to 100 mph. But if we race more than twice in a row, I'm going to invite him to help himself to the Sandwich Frunk for a few minutes of stalling, or I'm confident that the dynamics of the race will change markedly on the third run.
All of my runs were performed at 6000 feet above sea level, which likely makes the car slightly faster due to lower air density. But the lower oxygen content of the air at this altitude would reduce the power of the engine. Kidding!
That was funny.:biggrin:
But I'm a bit confused so I want to be sure that I follow both you and Pete with regard to the Maximum battery thing.
To the question; "does one, or does one not, need to select the Maximum Battery Power option in order to get the best results?", it seems that it is not entirely necessary. However if one forgoes this route, well then the car can be made ready, or made to reach a state of readiness, "by launching several times" to warm up the battery pack?
Is this correct?
Based on my experience... you do not need the option on to get best results. However, you do need the battery to be at a minimum temperature, which happens sooner if you enable the option. The same temperature can be achieved by launching, but that will most likely use more battery power.
Here is the one thing I haven't completely figured out yet. When we charge the cooling kicks, but even when I've left a supercharger it has taken a good bit of time to get into the Ready state. The first time I did it, it took like 2 minutes with no launches, two other times I did it, it took like 10-20 minutes with a launch or two. I would think that supercharging would cause the battery to reach a certain temp, but what it might mean is that the battery is too warm when charging and it needed to cool down. Since "too hot" also resets the status to "Preparing..." it is a possibility.