- Joined
- Aug 5, 2020
Okay, I have a potential business disaster to watch here:
The reason why this raises my alarms so much is that they're pretty much claiming that they have found the holy grail of vehicle-sized motors.
They're claiming that a single 17in motor, which is (I believe) around or under 2 inches thick, can output TWO HUNDRED FUCKING HORSEPOWER per motor. You'd have at least 2 in a car.
One of Tesla Model S Plaid's rear motors is about 22 inches long, and while it has a much smaller stator (looks like about 8 inches), the stator itself is much longer ('bout 10 inches). One of these makes 414hp. How do you reduce the size and winding length while going over an order of magnitude in power density? Smells fishy.
Their car-sized motor (the 21in) is expected to generate 844hp PER WHEEL. 3376HP on a single car with their "cheaper than any other motor" solution that "reduces cost of the drivetrain significantly"? I call bullshit.
Their drone motor, supposedly "just" a scaled down version of the wheel hub engine, doesn't even come remotely close to matching proper drone motors except for torque, which isn't exactly the most important factor in the air anyway: https://store.tmotor.com/product/u15-v2-motor-u-power-kv80.html
The other funny thing is that they talk about "unsprung mass" not being a problem anymore.
But they don't go into any detail about it. They just say that it's "very high torque and high power density". Cool. How does that reduce the problem of unsprung mass? You're gonna get the wheel flying off the road even faster? Faggot.
Add their INDUSTRY DISTURBING bullshit on top, supposedly, integrating motors, controllers, batteries, BMSes and ECUs is "too hard" and "time intensive" and "One of the most work intensive part of building a car"
Nigger. Have you ever worked on a car? Or any electromechanical project for that matter?
Batteries and BMSes aren't paired, because batteries are batteries. At most, you need to tell the BMS chemistry details and degradation characteristics, that's it.
ECUs and BMSes talk over CAN, which, sure, can have deviations, will generally follow the same protocol per manufacturer, and trust me, big car manufacturers are not gonna switch BMS provider every week.
And finally, motors and motor controllers are always paired, the ECU<->Controller communication may take a bit of time to setup, but by that I maybe mean a week.
We're talking about car manufacturers. They have engineers. They're smart. They can program and read documentation. They don't need your one and done walled garden bullshit.
This entire thing reeks of bullshit and scam, I'd say it's probably Theranos level of bullshit to the untrained eye. Slap the clear Apple fanboy bullshit coat they have on everything, and I'm 100% expecting this shit to go bankrupt within 2 years.
The reason why this raises my alarms so much is that they're pretty much claiming that they have found the holy grail of vehicle-sized motors.
They're claiming that a single 17in motor, which is (I believe) around or under 2 inches thick, can output TWO HUNDRED FUCKING HORSEPOWER per motor. You'd have at least 2 in a car.
One of Tesla Model S Plaid's rear motors is about 22 inches long, and while it has a much smaller stator (looks like about 8 inches), the stator itself is much longer ('bout 10 inches). One of these makes 414hp. How do you reduce the size and winding length while going over an order of magnitude in power density? Smells fishy.
Their car-sized motor (the 21in) is expected to generate 844hp PER WHEEL. 3376HP on a single car with their "cheaper than any other motor" solution that "reduces cost of the drivetrain significantly"? I call bullshit.
Their drone motor, supposedly "just" a scaled down version of the wheel hub engine, doesn't even come remotely close to matching proper drone motors except for torque, which isn't exactly the most important factor in the air anyway: https://store.tmotor.com/product/u15-v2-motor-u-power-kv80.html
The other funny thing is that they talk about "unsprung mass" not being a problem anymore.
Unsprung mass is the complete mass of the vehicle that is not carried directly by the suspensions.
High unsprung mass causes more strain on the shocks, this results in the shocks either having to be stiffer (as they have to combat more momentum in bumps) or keeping the same force, but at the risk of losing road adhesion at the smallest of bumps.
It also impacts steering feel, as you need to move much heavier loads with the steering wheel, and, when the vehicle is stopped, it's much harder for the wheel to rub and bounce off the shocks, causing more tire damage.
Unsprung mass is the one reason nobody does in-wheel motors. Well, that, and fucking up a wheel motor is much more expensive than swapping a knuckle and a hub.
High unsprung mass causes more strain on the shocks, this results in the shocks either having to be stiffer (as they have to combat more momentum in bumps) or keeping the same force, but at the risk of losing road adhesion at the smallest of bumps.
It also impacts steering feel, as you need to move much heavier loads with the steering wheel, and, when the vehicle is stopped, it's much harder for the wheel to rub and bounce off the shocks, causing more tire damage.
Unsprung mass is the one reason nobody does in-wheel motors. Well, that, and fucking up a wheel motor is much more expensive than swapping a knuckle and a hub.
Add their INDUSTRY DISTURBING bullshit on top, supposedly, integrating motors, controllers, batteries, BMSes and ECUs is "too hard" and "time intensive" and "One of the most work intensive part of building a car"
Nigger. Have you ever worked on a car? Or any electromechanical project for that matter?
Batteries and BMSes aren't paired, because batteries are batteries. At most, you need to tell the BMS chemistry details and degradation characteristics, that's it.
ECUs and BMSes talk over CAN, which, sure, can have deviations, will generally follow the same protocol per manufacturer, and trust me, big car manufacturers are not gonna switch BMS provider every week.
And finally, motors and motor controllers are always paired, the ECU<->Controller communication may take a bit of time to setup, but by that I maybe mean a week.
We're talking about car manufacturers. They have engineers. They're smart. They can program and read documentation. They don't need your one and done walled garden bullshit.
This entire thing reeks of bullshit and scam, I'd say it's probably Theranos level of bullshit to the untrained eye. Slap the clear Apple fanboy bullshit coat they have on everything, and I'm 100% expecting this shit to go bankrupt within 2 years.