Did you ever get an answer to this?

I have a sport LDU and was contemplating the 62kwh leaf pack since it seems like it would be much easier to use than the tesla modules, given that it requires less space to get 400V.

Any regrets?

I think I found the answer:

https://www.diyelectriccar.com/threads/impact-of-battery-voltage-and-current-on-tesla-motor-performance.205624/?post_id=1077237&nested_view=1&sortby=oldest#post-1077237

https://www.diyelectriccar.com/threads/running-a-tesla-drive-unit-at-200v-how-it-will-behave ...

Having disassembled an 85kwh pack I now have an appreciation for the volume and weight of (16) Model S battery modules, and have come to the conclusion I cant fit all 16 in an RX8.
I think I can fit 8 comfortably (6 up front, and 2 in the back where the gas tanks were), which equates to 200V.

Could ...

For anyone interested, I found some great videos on the Tesla Model S battery pack, and the causes of the water ingress problem:

Tesla Model S Battery Pack Basics:
https://www.youtube.com/watch?v=P7GR5fERXNY
https://www.youtube.com/watch?v=bNd-yJtRPhk
https://www.youtube.com/watch?v ...

I have a few Tesla Model S 24V batteries that Im not planning to use for at least a year.'
What are the best practices for storing them in the garage safely?


Thanks in advance

Well,.. the whole battery thing turned out to be a big emotional roller coaster for me.
10 of the modules had some small amounts of rust/corrosion on them and I had a big freak out worrying that the modules might spontaneously catch fire in the garage and take my house with them...
Between selling ...

I think reading posts like this one are curing me of any trace of interest in attempting to salvage or break down a module:
I have disassembled 5 modules now. My first attempt was mechanically, and didn't work. I accidentally nicked a cell with a Dremel. I was trying to remove 2 of the 6 series ...

The rust is sketchy. A close-up would help.
What are you trying to do with these? If you're swapping out rusty cells pull them now.
Do they all look this bad?


So 6/16 seem to be okay (no rust or other oddities).
The other 10 have varying degrees of rust on the tops of about %10 to %30 of the ...

It looks like the white stuff is left over drywall from poking a hole through. It's odd that it looks to be on top of the battery cover. Is it dusty, greasy, silicone like?...


Yeah its weird, Its on top of the cover, but also seems to be inside the pack as well on that corner. I couldn't tell ...

tom91 wrote: ↑Sat Jul 13, 2024 12:17 pm Thats okay, write the voltages down on them. Then measure them every few days.

What about the rust and the white stuff? No cause for concern?

tom91 wrote: ↑Sat Jul 13, 2024 12:11 pm Measure the module voltages.

They all read 22v.

Also I slept exactly zero hours last night....
... I am contemplating abandoning this whole project because the idea of having a battery fire is weighing on me pretty hard....

Well I have made some progress recently,..

I designed and 3D printed a goofy stand for the LDU inverter so it wont tip over while its waiting for its new home:
IMG_0365.jpg

and bought some aluminum blocks to machine some coolant adapters with:
IMG_0393.jpg

but then,... I spotted an 85kwh ...

The back story:
Well I rolled the dice and bought an 85kwh model S pack off facebook market place.
It was taken out of a car that threw a battery error of some sort, and then a local EV shop swapped it out for a newer 90kwh pack (or so I'm told anyways).

However, I found out after the money had ...

One other interesting thing I noticed immediately after removing it.

I cant set it down! (Well not easily).
Since its designed to be bolted via the coolant plate, there are no safe flat surfaces to set it down.
So first order of business is going to be to 3d print an inverter stand that will let me ...

Are there any alternate orientations you could mount the drive unit to avoid those suspension mounting points? Backwards, upside down, tilted? Doing so would require modifications to the oil pump but that is far less intensive work and a far more well traveled path.

That's probably a wise ...

What about the option you didnt consider yet...:

1. Mount the LDU in the front lengthwise as far inside the tunnel as possible
2. Connect the rear facing halfhshaft to Mazda driveshaft so that you can get the full Tesla speed from the motor that way
3. You fix the front facing halfshaft by some ...

I would not separate LDU inverter from motor. It was not designed for that. You may create undesirable effects EMI or even kill inverter in the long run.


Thanks, I hadn't considered that.
I will fully rule out Option F (installing it into the subframe in one piece) before I move forward with ...

Hi everyone,

I always wanted to build an electric car, and finally took the plunge last year and bought an RX-8 off a friend with a blown motor.
IMG_0278.jpg
I then lucked out and found a Tesla sport LDU on facebook marketplace for a good price.
I managed to get the LDU up and running on open ...

found this:
https://www.youtube.com/watch?v=kVVx9kI10po&t=1241s

Background:
Hi all, I am in the early stages of trying to convert a Mazda RX8 to use the Telsa LDU.
I have managed to get the LDU running on open inverter and am now staring long and hard at the rear subframe and strategizing how to squeeze the LDU into such a small space.
IMG_0307.jpg ...

This thread also has alot of info:

https://teslamotorsclub.com/tmc/thread ... ir.274163/

There is a good thread on the facebook group "Tesla Swapped EVs" about this.

It sounds as though everyone is doing the coolant delete now rather than trying to get a new seal to actually seal.

https://www.facebook.com/groups/1258821347630690/permalink/2480298695482943/?mibextid=rS40aB7S9Ucbxw6v ...

FWIW - I swapped my A/B today and it fixed mine too.

Yep! swapping the encoder wires (A/B) did it.

I have uploaded a video here:
https://www.youtube.com/watch?v=YUMFOA6nCZY&t=2s


Thanks everyone!!! especially Damien and Johannes!!!

Next step,.. determining if it will actually fit in my rx8 (unlikely)

I am having this exact phenomenon with my sport LDU. I just made my first attempt to spin it about an hour ago and ran into this.
The motion and speed on my LDU shaft looks identical to yours. moves very slowly and very jerky / pulsing.
I am running 2 car batteries (25v - same as you).
I am also ...