News
Tesla’s ‘rotor geometry’ patent hints at more efficient electric motors
Tesla has invented a technique for increasing its all-electric vehicles’ power and torque by simply adjusting the shape of some of its electric motor’s components.
A recently published US patent application titled “Geometry of Rotor End Ring and Stator End Turns” describes how Tesla accomplishes this. According to the application, certain internal parts of an electric motor can be modified to reduce power losses from leaks in the magnetic field that effectively make the motor smaller.
The primary components of electric motors – the rotor and the stator – together generate the motion used to operate a vehicle. Simply, a magnetic field produced by electricity running through copper wires in the stator cause the magnetized bars of the rotor to spin. However, when the motor is operating at high speed, some of the electromagnetic force is lost, reducing the motor’s power.

Tesla has identified two places where this loss can be reduced – the end parts of the stator and rotor. The copper wiring in these parts is wrapped around cutout shapes, and after some testing, Tesla’s engineers learned that different shapes give different results. Per the application, “geometries for rotor end ring and stator end turns can be chosen in a way that improves performance or other characteristics of the motor.”
Overall, electric current flow becomes concentrated in different spots on the motor depending on the ‘geometry’ of these parts, thus an opportunity to limit any losses has presented itself by controlling where the concentrations happen. Tesla has filed this application to protect the process (‘method’) of building a motor with the geometry knowledge made part of the design and testing.
The process is described in the application’s Abstract as follows:
“A method of making an AC induction motor includes: providing a rotor and a stator for the AC induction motor; determining, for different geometries of an end ring of the rotor, a location of a first centroid of current density in the end ring; determining, for end turns of the stator, a location of a second centroid of current density in the end turns; selecting a geometry for at least the endring of the rotor so that an axial distance between the first centroid of current density and the second centroid of current density is minimized; and assembling the AC induction motor, wherein the end turns and the end ring have the selected geometries.”

Although the publication was only recently available to the public, this application is related to another patent that was filed in 2015, meaning that Tesla is likely already implementing the findings and invention into their manufacturing process. This is rather unsurprising considering the company’s tendency to constantly improve its vehicles’ components as soon as the upgrades are available. Elon Musk himself has mentioned this on Twitter, stating that Tesla’s electric cars are “partially upgraded every month as soon as a new subsystem is ready for production.” This was also highlighted by President of Automotive Jerome Guillen last December, when he highlighted that the designs of Tesla’s batteries are always evolving.
Automotive teardown expert Sandy Munro concluded following a thorough analysis of an early-production Model 3 that the vehicle’s electric motors are among the best in the industry today. In an appearance at YouTube’s Autoline TV, Munro noted that the Model 3’s electric motors are more efficient and more cost-effective than the motors found in the Chevy Bolt EV and the BMW i3. “They’ve got magic. The electric motor is smaller and lighter than everybody else, but outperforms everybody,” Munro said.
The full text of Tesla’s “Geometry of Rotor End Ring and Stator End Turns” patent can be accessed here.
News
Tesla exec reveals shock development with Cybercab
“If we have to have a steering wheel, it can have a steering wheel and pedals.”
Tesla is planning to launch the Cybercab in the second quarter of next year, and it is designed to be fully autonomous, so much so that the company is planning to build it without a steering wheel or pedals.
However, a Tesla executive said today that the company could ditch that idea altogether in what would be a major shift from the plans the company, and especially its CEO Elon Musk, have announced for the Cybercab.
Earlier today, Robyn Denholm, the company’s Chair for the Board of Directors, revealed that Tesla would potentially switch up its plans for the Cybercab based on potential regulatory requirements.

Credit: Tesla Europe & Middle East | X
Currently, even autonomous vehicles that operate for companies like Tesla and Waymo are required to have steering wheels and pedals. From a regulatory perspective, this could halt the plans Tesla has for Cybercab.
Denholm said in an interview with Bloomberg:
“If we have to have a steering wheel, it can have a steering wheel and pedals.”
Interestingly, Musk and Tesla have not veered away from the idea that the vehicle will be without these operational must-haves.
Since the vehicle was revealed last October at the We, Robot event in Los Angeles, Tesla has maintained that the car would be built without a steering wheel or pedals, and would equip two seats, which is what is statistically most popular in ride-sharing, as the vast majority of rides have only one or two passengers.
Musk doubled down on the plans for Cybercab as recently as last week, when he said:
“That’s really a vehicle that’s optimized for full autonomy. It, in fact, does not have a steering wheel or pedals and is really an enduring optimization on minimizing cost per mile for fully considered cost per mile of operation. For our other vehicles, they still have a little bit of the horse carriage thing going on where, obviously, if you’ve got steering wheels and pedals and you’re designing a car that people might want to go very direct past acceleration and tight cornering, like high-performance cars, then you’re going to design a different car than one that is optimized for a comfortable ride and doesn’t expect to go past sort of 85 or 90 miles an hour.”
Cybercab is fully conceptualized as a vehicle that has zero need for pedals or a steering wheel because it is aimed toward being fully reliant on a Level 5 autonomous platform.
Tesla is ramping its hiring for Cybercab vehicle manufacturing roles
Regulators could get in the way of this, however, and although the car could drive itself and be a great solution for ride-hailing, it might need to have these controls to hit the road in the future.
News
SpaceX opens up free Starlink service for those impacted by Hurricane Melissa
SpaceX is opening up its internet service, Starlink, to those impacted by Hurricane Melissa, as it made landfall in Jamaica and the Bahamas as a Category 5 storm.
Hurricane Melissa is expected to reach wind speeds of over 165 MPH over the next few days as it extends out into the Atlantic Ocean by Thursday and Friday.
Satellite imagery shows Hurricane #Melissa‘s growth from its formation on October 21 to a Category 5 hurricane through October 27, 2025. #HurricaneMelissa pic.twitter.com/goR3Hbgb9c
— The Weather Network (@weathernetwork) October 27, 2025
Citizens in Jamaica and the Bahamas have been preparing for the storm for the past week, getting necessary goods together and preparing for the massive storm to arrive. It finally did yesterday, and the first images and video of the storm are showing that it could destroy many parts of both countries.
Starlink is now being opened up for free until the end of November for those impacted by the storm in Jamaica and the Bahamas, SpaceX announced today:
For those impacted by Hurricane Melissa in Jamaica and the Bahamas, Starlink service is now free through the end of November to help with response and recovery efforts → https://t.co/fUko3xSviJ
— Starlink (@Starlink) October 28, 2025
It is a move similar to the one the company made last year as Hurricane Helene made its way through the United States, destroying homes and property across the East Coast. SpaceX offered free service for those impacted by the destruction caused by the storm.
The free Starlink service was available until the end of 2024.
Elon Musk’s companies have also made similar moves to help out those who are impacted by natural disasters. Tesla has offered Free Supercharging in the past, most notably during the California wildfires.
Tesla and SpaceX’s LA fire relief efforts: Cybertrucks, free Starlink and more
One major advantage of Starlink is that it is available for use in situations like this one, where power might be required to operate things like a modem and router.
Internet access is a crucial part of survival in these situations, especially as it can be the last leg some stand on to get in touch with emergency services or loved ones.
Elon Musk
Tesla board chair reiterates widely unmentioned point of Musk comp plan
Tesla Board Chair Robyn Denholm appeared on Bloomberg TV this morning to discuss the current status of CEO Elon Musk’s compensation plan, and used the opportunity to reiterate a widely unmentioned key point of the entire package.
Critics of the proposed pay package, which would pay Musk $1 trillion if he completes every tranche, routinely cite the sheer size of the payday.
Of course, many skeptics leave out the fact that he would only get that money if he were able to generate eight times the value the company currently has.
Tesla gains massive vote of confidence on compensation plan for Elon Musk
For Musk, it might have a little bit to do with money, but that is likely a very small percentage point of why the compensation package is being offered to him. He has reiterated that it is more about voting control and overall influence, especially as Tesla dives into robotics.
He said during the Q3 Earnings Call:
“My fundamental concern with regard to how much voting control I have at Tesla is if I go ahead and build this enormous robot army, can I just be ousted at some point in the future? That’s my biggest concern. That is really the only thing I’m trying to address with this. It’s called compensation, but it’s not like I’m going to go spend the money. It’s just, if we build this robot army, do I have at least a strong influence over that robot army, not current control, but a strong influence? That’s what it comes down to in a nutshell. I don’t feel comfortable wielding that robot army if I don’t have at least a strong influence.”
Tesla shares the idea that Musk is a crucial part of the company, and without him being awarded the voting control he feels he deserves, he could leave the company altogether.
The company is very obviously feeling the importance of the upcoming vote, as it has advertised and pushed heavily for the comp plan to be approved, mostly to retain Musk.
Tesla Board Chair Robyn Denholm said today to Bloomberg TV that it is crucial shareholders understand it is not about Musk’s potential wealth, but more about his influence on company decisions:
“So firstly, it is a performance package, so he gets nothing if he doesn’t perform against the pretty audacious milestones that are part of the performance criteria that’s been outlined by the board in the performance package. So, I think rather than compensation, it’s actually about the performance and the goals that we have for the company as we move forward. And so, for me, it really is about making sure that investors understand that they actually get paid if he hits the milestones before he will…Elon’s been very public, including on last week’s earnings call, about the fact that it’s around the voting influence that he could have in future shareholder meetings as opposed to the economic interests.”
Musk is not an incredibly flashy person. He does not have crazy cars or a massive house to go back to. He spends a lot of his time working and sometimes even sleeps at his office inside the factory.
He recently said he “only has what is needed” because “material possessions were making him weak.”
Material possessions were making me weak, so now I have only what is needed
— Elon Musk (@elonmusk) October 20, 2025
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