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Tesla SDU - Front and Rear Driveshaft Compatibility?

Posted: Mon Jul 04, 2022 1:29 pm
by elShankos
Hi there,

I am planning on using a Tesla Model S Front SDU in an EV conversion of a Subaru Legacy which will involve putting the F SDU in the back and making the car RWD instead of AWD. The reasons for this (instead of using a rear SDU) are space and orientation of the SDU within the original subframe etc...
Q: For the Front SDUs, can one remove the half shaft arrangement a A) below and use a pair of Tesla Model S rear driveshafts at B) and C)? Could work if the splines are the same right?
T FDU Driveshafts.JPG
Then I could use a pair of basic new aftermarket driveshafts such as these?
T Rear Driveshafts.JPG
I have hunted all over the show for the answer to the above but haven't found anything definitive so apologies for the noob question if it is detailed somewhere where I have missed it!

Re: Tesla SDU - Front and Rear Driveshaft Compatibility?

Posted: Sun May 21, 2023 8:13 am
by EV_Builder
The same company sells the front drive shaft parts too.
The reason for the extension axle is to limit torque steer.
The more equal the drop angles the better.