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Fun with Tesla motor

129324 Views 142 Replies 32 Participants Last post by  matchke
So last week I've became a proud owner of a Tesla drivetrain:

On the way home, we stopped by a Tesla superchager - the owner of the brand new white Tesla was quite surprised, to see a Peugeot with a Tesla drivetrain :)

By the looks of it, this motor indeed is the same one as in Tesla Model S. I have no idea if different battery in Model S means different motor, but most likely they are all the same (as power limiting factor is the battery).

The history of this motor is quite complicated. It came from Mercedes, where they were using it on a testbench. Most likely this motor never even seen a car :) The reason why Mercedes had it, is their new Mercedes B electric car. I presume that they couldn't be bothered with downsizing their licensed Tesla parts (they bought everything from Tesla, including the battery and charger), so Mercedes B motors are (most likely) Model S motors. If someone has the dimensions of Tesla Model S motor, please write them here. I would love to compare them.

I've bought the whole drivetrain - motor, single speed gearbox and the inverter. Since this is a factory test motor, most likely the firmware will not be compatible with Model S (it might be compatible with Mercedes B). In the best case it just spits bit more diagnostic information, but most likely having a Tesla capture will not spin it. This is okay, as my plan is to use my own motor controller to replace the "brain" of this beast. Over the past year, I've started to enjoy performing lobotomy to different inverters :) (link in my signature).

I'll be using this thread to give some information about this motor, and how to use it in your conversion.
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Thanks! I don't have an exact figure, but I would place this somewhere around 140kg (motor+inverter+gearbox). The power per kg ratio in Tesla is amazing.
That's pretty good for an induction machine. Can't quite compete with a good PMAC system, but impressive nonetheless.
Do you have any comparable systems as an example? Motor/Inverter/Gearbox.
I don't have good numbers for a gearbox, but:

AMR 90P motor: 45kg
RMS 250dz: 20kg

That's 275kW peak for 65kg motor and inverter combination.

A Borg Warner eGear is 28kg...that's probably a little weenier than the Tesla gearbox, but give, say, 40kg for gearbox and that's 105kg which would be 2.6kW/kg vs 2.2 for the Tesla system if it is 310kW and 140kg.

Still, it's an induction motor. I don't think any others come even close.
Sorry for the brief derailment. I would love to find out what the motor weight and inverter weight ends up being though.
Looks like Jack might not win this race afterall...
I guess I get to be the first to say: we spun a tesla drive train today. There will be video.
Nice work!

I really have to urge you to not go after the Supercharger network next, though. Tesla isn't going to do anything about hacking a drive train, and wouldn't have much of a case if they did. But if you hack a supercharger, they'll come after you, and they'll win. Tesla is notorious for losing lawsuits, but a first year law student could win that suit...regardless of how good Jack's lawyers are.
Well, Jack reckons I'm ignorant for raising concerns about hacking the Superchargers, so full steam ahead!

Be careful, Colin.
It's not the technical aspects that make the show boring--those are for most people the most interesting parts. The show is boring because he talks slowly, takes forever to get to the point and adds a lot of filler that most people don't care about.

If I had nothing else to do, I could probably reedit a show down to about 20 interesting minutes--without cutting any content out.
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