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I feel like we would have heard about this by now. Shouldn't be too complicated to find a hub centric ring that fits over the lip.
That would be good info to know regarding the depth of the non-p rotor hats.
One thing that I noted is the performance rotor hats have different thicknesses between the front and rear. I guess I should have measured it?
Front:
Rear:
You'd think the A/C compressor would turn off at full throttle. Not that I know it does in a Tesla, but it sure did in my other cars.
I doubt that there would be a reason to in a Tesla. (I suspect that the battery has enough headroom to be able to output the little bit of power that is needed for the A/C compressor in addition to powering everything else.)
Not to mention that the A/C is used to cool the motor/battery as well as the passengers, so it really is needed in most cases.
Knightshade
Well-Known Member
ICE vehicles usually mechanically drive the compressor, so it "costs" horsepower to run it- AC in a tesla is electrically driven
Still costs horsepower. Neither car contains any real horses.
Turning it off for full throttle is no big deal. Lots of thermal mass in the condenser coils already. Certainly would turn off for less time in a Tesla than a car that needs many more seconds to accelerate.
Can someone take a picture of the back of one of the 20” Performance wheels? Does it have a shoulder machined on the center bore to accommodate that ~70mm lip?
But if the battery has enough capacity to run the motors at full power and still run the AC there is no lost horsepower, i.e. no reason to shut the AC down.
Are you suggesting that Tesla's are not battery limited? Because many of them are.
I thought we were talking about Model 3s, and I didn't think they were battery limited.
Knightshade
Well-Known Member
You don't think the batteries on the Model 3 can supply max power to the motor(s) while also running the AC compressor? Why?
Are you suggesting unlike every other P Tesla , Model 3 doesn't run at battery current limits? When you're at the current limit, any power not going to the motor is overhead.
If only, someone could provide data.
Knightshade
Well-Known Member
EPA data says the Model 3 P motors are 147 and 211 kW for power. That's 358 kW.
Max discharge on the battery is 370 kW (per hack of a RWD one by ingeneerx whose name I never spell correctly)
We have data. It says there's 12 kW to spare.
I've not seen data on the 3, but that's roughly 5-6 times more power than the AC on the S needs, and is presumably a less efficient system cooling a larger car than the 3. Obviously stuff like lights and the touchscreen and radio need power too, but again it seems like the 3 is not, in fact, battery limited.
You could lose that 12kW and more by losing a few % SoC or a few degrees temperature, no problem. EPA data is not reliable. Nothing conclusive here.
data = canbus logs. It will be obvious when you're current limited.
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