Hey elShankos, good to see you are making progress! I'm in Cape Town as well, and moving at the same pace. I've managed to get a Zombieverter properly configured on the bench, so if you need and help with wiring things up do let me know - happy to meet up and debug if needed.


Nice one man - do ...

Hi All, been a while since I did an update so here goes:

I got the engine, transmission, propshaft and rear diff + fuel tank out:
image.png

And then I spent a LOT of time scanning all sorts of things - I'm getting a lot better at scanning after overcoming the initial learning curve!


So now ...

Hi All, I guess this is an update?

Project finally restarting now due to:
1) Had to get a second car before pulling the engine from the Subaru - eventually got a 94Ah BMW i3 for a decent price - amazing car really!
2) Had to finish the Vespa - bought if for R13k 10 years ago, sold it for R35k ...

Hi, I have been pondering the same thing for my SDU setup - what have you come up with so far?

Thanks a lot for sharing all this info - super helpful as I'm about to pull the engine out of my Legacy GT (3rd Gen) to build battery boxes up front. Did you do any 3D modelling to plan the space at all? Just curious.

Hi All, I thought I would post a mini update on my build:
- was overseas for a month!
- Now I finally have to refurbish and sell this original Vespa I have had in my garage for the past 6 years as its taking up space where I need to put the subaru to pull the engine etc:
image.png

Such a smelly ...

Great to see a open discussion on this as I've also been agonising over all the possible ways of architecting my own system. My current layout looks basically the same as yours, but I'm using M3 DU with an as yet undetermined VCU (a bit heretical to say it on OpenInverter even as a Damien patron ...

Looks great!
Small note. A/C and PTC heater (if you're gonna add one) are fused with 40A in the FHVJB.
https://www.diyelectriccar.com/threads/hacking-the-tesla-model-s-front-junction-box.193729/

Any chance you found a reasonably priced pre-made harness for the SDU LV wiring?
I see people here ...

Hi,

I've got a rear SDU going into a subaru rear subframe and I've been trying to find a diagram etc to show what the tilt angle should be. Did you have any luck with yours?

Just a mini update: so I got my bench test of the SDU done - I powered it off my Lifepo4 48V DC home battery system as a test and made this powerfully average Youtube video here:
https://www.youtube.com/watch?v=kEg9AxUq_MY

Just a heads up: while "revving" the pedal its actually pretty easy to start ...

Also, in South Africa, why not buy lithium cells from the solar suppliers? I know they are lifepo4 rather than li-ion and therefore a bit bigger, but they require way less cooling consideration, and you’d avoid all the import hassle.


Hi, so the lifepo4 cells are cool and also safer but they don ...

Very interested in seeing how you get on with this. I have a 4th gen Legacy spec B which I've had for 16years now. Would love to convert it but the ridiculous UK rules on not changing the road tax following an EV conversion mean it doesn't make sense to.

Curious about your connection to the ...

Since I am currently seperated from my beloved project back in my parents garage due to university far away, I just continued the thinking part of this problem.
I found multiple solutions that all have their specific flaws:



1) Charger directly connected to Battery, Motor connected via ...

So I decided to make an alternative wiring diagram with the following 2 main differences to the Rev 3 above:
1) I've added a main -HV contactor (to be like an actual Tesla arrangement - must be a reason its there right? :) ) and also switching all the contactors in an OR arrangement - either from ...

Quick questions on your HV wiring.

-Why is there no contactors on the HV negative?

-You need precharge on the auxiliary components too


Hi, thanks for the queries. On the main -HV contactor Q, I'm kind of following aber333's advice as I can't really see the benefit of having a second contactor ...

Wiring Diagrams:
So I started with a concept diagram that looks like this to get my head around things:
image.png

And then over the past few weeks while swopping out the inverter control board (what a pain those SDU current sensors are!) I have been working on a main wiring diagram which at ...

Hi All,

So.. I started out on the DIY Electric Car forum but it occurred to me that it would actually be better to put my build here as it's based around the OI conversion route. I had a bit of a thread here: https://www.diyelectriccar.com/threads/subaru-legacy-tesla-sdu-conversion.208076/

But ...

I hate when people say "read". Yes, reading is good, but sometimes you've been staring at the problem for so long that nothing makes sense anymore and need another head to help alleviate some of the uncertainty. I had the same questions when I was first starting and had to go investigate.

Take a ...

Never NEVER allow inverter or other VCUs to DISCONNECT your DC contactors at its whim! You setup DC link in such a way that inverter can control contactors innitially, but when on they can be turned off ONLY by removing 12V from them (turn ignition key). That is called latching relay circuit.
You ...

I use a PWM signal to pull the accelerator or brake pedal more or less to zero. With this I prevent over and under voltage of the battery, as well as blocking or spinning of the rear axle.


Thanks for this - I think this is a really good idea and I recon I can do this with an available signal ...

OK!
What i did was use a bit longer cable, routed it around the alu wall and i fixed the Wifi module on the other side over the charger module. It seems i get less disturbance that way. Using Lolin Wemos D1mini i get wifi signal some 5m from the car now. Go figure.


This is probably a better ...

I opened up the brake pedals switch out of curiosity and inside its just a sort of slider switch with 2 sides - NO/NC: Hopefully useful for others who might wonder about it too.

Hi All,

I have a Tesla rear SDU and OI setup where I am aiming to control the contactors via the inverter as per the OI setup wiring diagram - I'm at the point where I have the board swopped over and am rigging up my bench test arrangement. So I am wondering how others have done this setup and ...

I left out all the sockets, and just used the header, but didn't set it all the way down and carefully soldered in place... would this work for you? I'm using it in an inverter, so I can't tell if this would fit in the Tesla charger.
https://i.imgur.com/97CL2kF.png


Thanks for the response. So ...

Ok, so I've been silently watching and building. Well, the time has come to join in. I have a 14 Chevy Silverado 2500 that had a Duramax. Drivetrain is gone. Fuel tank is staying as I'm adding a 22kW diesel range extender. I have added a 1st gen Chevy Volt battery where the exhaust went. It ...