The board is made by Delta, who make all manner of power electronics including motors for EVs. I've been doing some work on the Tesla DCDC Converter (from a 2015 70D). It appears (but non-exhaustive testing) that all the Tesla axles (large and small motors) use the same inner CV joint dimensions. Based on my research (including bought axles) I have found none that fit the Tesla drive unit. Unfortunately the aftermarket axle companies give insufficient information about the other critical dimensions. I have tried (bought and now stored for posterity in my garage) multiple non-Tesla OEM axles with a 29 spline connection to the drive unit. Rear motor leads (to front) with the transmission, front drive unit leads (to front) with the motor/inverter. front to rear direction), reportedly to maintain oil pump and flow in the transmission. Orientation of the motor must remain as in original Tesla (i.e. Width mount (mount located on the side of the motor) adds 4in Note: inverter needs additional space to the side (~2in) for power lines in and coolant connections Measurements were taken with a measuring tape, and thus are inaccurate (vs with a giant caliper). The front motor also has a mount for a lay (intermediate) shaft. Based on visual inspection, the front motor differs slightly in the casing (mostly around the final drive casing). Insofar as I can tell the small rear and front motors are very similar in size. (Someone contacted me "Nick D" but I didn't catch the return email address in the request - so I'm hoping he subscribed to this thread.)
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