Brofessional
Well-Known Member
- Joined
- Apr 19, 2021
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- 22 GR86, 12 Accord, 18 Yukon, 21 Mach E GT
I just cannot imagine continuing to dig when you've made it clear to anyone who knows a fair amount about electric motors that you have no idea what you're talking about. Induction motors have several benefits and compromises relative to perm magnet motors. They're typically cheaper to build (no rare earth metals) but they're also usually heavier, have increased cooling requirements, and usually have lower torque ratings (in part because a small percentage slip is inherent in their design). But they are primarily advantageous in EVs because you can REDUCE voltages under light loads (analogous to cylinder deactivation in combustion engines) making them overall more efficient and increasing range.This just isn't true...the magnetic field on a perm mag can't be tuned dynamically as much as an induction motor so the design usually means there is some RPM range where the constant torque ends and you can maintain power as the revs increase sorta...but loss of torque as you speed up...they effectively run out of breath...this is part of what killed the single motor Model 3...it has good power off the line, but just looses it's breath.
Now this doesn't mean Ford is giving these motor full beans at the top end I guess. But there is no reason to assume this could never be a hardware limitation in how they have the car geared and motors designed. There is 100% going to be an RPM point where there is just no way to maintain power and torque on a perm mag. With induction you have more ability to do that, but lose some efficiency and have a heavier motor...there is a big compromise going to induction...but you don't need to add weight/failure point of a gear changing gear box. So at end of day it ends up close...Tesla doesn't have ton of experience with gear changes, but wanted top end power so has at least one induction motor in their cars.
Ford seems to have went a route where they have a very exciting car, but that loses it's breath without an induction motor or gear box...but may end up close to the same efficiency and 0-60 of a MYP even with more battery weight and less uglied Aero focused design.
Can you imaging how dumb it would sound if I started posting about how Toyota's 3.5L is slower than Honda's 3.5L because it doesn't have cylinder deactivation?
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