San Francisco,june 15
Elon Musk has elaborated on details of Tesla’s new electric motor — the Plaid carbon-wrapped motor — and even teased an even crazier higher RPM version coming to the new Roadster.The CEO mentioned a brand-new battery pack without going into new details.However, he did unveil Tesla’s new Plaid carbon-wrapped motor and discussed a few details about the new technology, which allows for smaller, more powerful and efficient motors.During the presentation, Musk briefly touched on the fact that this new motor is only possible thanks to a new machine that Tesla developed to be able to build it.In a new series of tweets yesterday, the CEO elaborated on that machine:”Fiber is wound over rotor at high tension load. Machine to do this was made by Tesla Automation. Carbon sleeve must put copper rotor in compression or it loosens at low temp due to differential thermal expansion. Preload is also helpful for maintaining precise gap to stator,” the Tesla CEO said.
Musk also expanded on the advantages of the new motor over its predecessors.”Main advantage of this is a much stronger EM field compared with a rotor that is held together by metal (usually high strength steel). Other advantage is that rotor can go to higher RPM, as carbon sleeve (mostly) stops copper rotor from expanding due to radial acceleration,” Musk said.In short, the new carbon-wrapped rotor enables Tesla to push its new motors to a higher level of performance.
