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Does anyone know the hardware differences between the P3D and 3D?
- Thread starter Quickturtle
- Start date
Yup. IMO, the standard AWD should use two permanent magnet motors, while the PD should use the AC induction/PM combo. But no, it looks like Tesla is sticking to the same config for both.
No one knows.. wait til you get to the $5k "performance package" debate.
Yes. Elon knows. And he tweeted the details on May 19, 2018. Quote:
“AC induction front & switched reluctance, partial permanent magnet rear. Silicon Carbide inverters in both. Performance drive units are lot sorted for highest sigma output & get double the burn-in.”
That’s what we know about the AWD and Performance drivetrain. And Performance has different brakes.
Perry
Active Member
Performance base does not have different brakes unless you pay extra $5000 for performance upgrade.
wbhokie
Member
In the S/X the P models had different fuses or something if I recall (Other than the motors) to support to power throughput to the motors. There could be several things that don't show up on a spec sheet that are different. As of now though, seems to be only software.
Yes. The most significant hardware difference is the red paint under “dual motor”. And there are more electrons moving through the wires and less rubber on the tires on the one I’ll be driving.
systemBuilder
Member
Re: Tesla Model 3 will have a ‘Ludicrous’ mode, says Elon Musk
The Model S P85D Ludicrous upgrade (demarcated by a red underline) included the following:
1. Special fuse on the main battery pack and close-monitoring computer system so that the pack could get closer to thermal limits before shutdown, still, the Model S does go into thermal limiting when driven hard for a few minutes (2-3).
2. Tesla replaced the main pack contactor to use Inconel instead of steel. Inconel is a space-grade superalloy well suited for extreme high temperature environments. This superalloy is primarily use in the aerospace industry, and one of its more famous use is in the novel manufacturing process of SpaceX’s SuperDraco engine.
I would imagine that the Model 3 has item #2, but it should not need item #1 because I think the battery pack design and cooling system are improved and the car does not go into thermal limiting, or alternately, perhaps it is capable of even faster speeds but the 3.5s 0-60 is a limit where the car does not need to do power limiting. I am guessing there is no limiting because of 3 track-racing reports that indicated the RWD model did not do any thermal limiting. I also suspect the the P3D model has:
3. More powerful battery cooling system (bigger radiator, or faster pumps, or bigger reservoir, higher conductivity coolant, or whatever)
The Model S P85D Ludicrous upgrade (demarcated by a red underline) included the following:
1. Special fuse on the main battery pack and close-monitoring computer system so that the pack could get closer to thermal limits before shutdown, still, the Model S does go into thermal limiting when driven hard for a few minutes (2-3).
2. Tesla replaced the main pack contactor to use Inconel instead of steel. Inconel is a space-grade superalloy well suited for extreme high temperature environments. This superalloy is primarily use in the aerospace industry, and one of its more famous use is in the novel manufacturing process of SpaceX’s SuperDraco engine.
I would imagine that the Model 3 has item #2, but it should not need item #1 because I think the battery pack design and cooling system are improved and the car does not go into thermal limiting, or alternately, perhaps it is capable of even faster speeds but the 3.5s 0-60 is a limit where the car does not need to do power limiting. I am guessing there is no limiting because of 3 track-racing reports that indicated the RWD model did not do any thermal limiting. I also suspect the the P3D model has:
3. More powerful battery cooling system (bigger radiator, or faster pumps, or bigger reservoir, higher conductivity coolant, or whatever)
Last edited:
Knightshade
Well-Known Member
Based on all evidence so far, there's no HW difference at all, the 3D is simply software limited (regarding rear motor output and likely the general acceleration curve)
Some may turn up in teardowns later, but given the RWD DUs were already shown to use full SiC inverters and handle 800a in software there doesn't seem to be a need for any.
(the 5k performance pack adds some HW diffs, but none related to battery or drive unit)
Some may turn up in teardowns later, but given the RWD DUs were already shown to use full SiC inverters and handle 800a in software there doesn't seem to be a need for any.
(the 5k performance pack adds some HW diffs, but none related to battery or drive unit)
Daniel in SD
(supervised)
I still think the rear drive units in the 3D might have some sort of cost savings (smaller inverter, fewer magnets?). It has a slightly lower rated power on the EPA website (188kw vs 211kw) but the front is exactly the same. I guess we'll have to wait for a teardown.
There is a guy called Ingineerix who claims to have insider information and says that the inverters for the rear motor on the regular AWD have substantially lower rating then the ones on the performance AWD and RWD versions of the car, at 800A vs 500A. Not sure where this guy gets his/her information from, but it's the only quantitative piece if informsrion I've heard about the topic: Tesla Model 3 gets hacked, reveals more details and great potential for dual motor/ performance versions
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