Understanding the Tesla Model S Performance Motor - YouTube
45min long. EV auto repair school teacher's teardown. Talks about the "ceramic" bearings, lubrication and coolant compartments/channels.
Quite amazing we don't see common cross contamination issue between coolant and oil given the complexity (which I'd imagine would be catastrophic for the gear/bearing train). Must benefit from the far lower temperature than ICE engines where the seals and sealing materials usually degrade.
Motivated to gather more knowledge before last round of boxing match with SC on my13 MS85's 3rd DU's (1025276-00-Q) droning/humming (I think not milling) noise between 30-35mph. Getting the typical HQ mandated SC run around these days for older cars even though my DU is still under warranty for a 3 more months. Already a few rounds of run around on this AND the well known MCU eMMC failure (Thanks to NHTSA for forcing Tesla's hand)
45min long. EV auto repair school teacher's teardown. Talks about the "ceramic" bearings, lubrication and coolant compartments/channels.
Quite amazing we don't see common cross contamination issue between coolant and oil given the complexity (which I'd imagine would be catastrophic for the gear/bearing train). Must benefit from the far lower temperature than ICE engines where the seals and sealing materials usually degrade.
Motivated to gather more knowledge before last round of boxing match with SC on my13 MS85's 3rd DU's (1025276-00-Q) droning/humming (I think not milling) noise between 30-35mph. Getting the typical HQ mandated SC run around these days for older cars even though my DU is still under warranty for a 3 more months. Already a few rounds of run around on this AND the well known MCU eMMC failure (Thanks to NHTSA for forcing Tesla's hand)