Brushes on slip rings in conventional alternators wear out.
BMW using brushed motors
- Thread starter Vercingetorix
- Start date
If the brushed motor actually increased efficiency the car would be more efficient than its competitors.
Its not. Not only is it less efficient its slower charging.
The audis and taycan beats it here, and the model 3 slaughters it.
I ran all my normal routes on a better route planned and I spend twice as much time charging and about twice as much money per trip if I take the BMW - along with the joy of having to go to wal mart to juice it.
Try it yourselves on your routes and see.
Its not. Not only is it less efficient its slower charging.
The audis and taycan beats it here, and the model 3 slaughters it.
I ran all my normal routes on a better route planned and I spend twice as much time charging and about twice as much money per trip if I take the BMW - along with the joy of having to go to wal mart to juice it.
Try it yourselves on your routes and see.
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The car uses/ consumes more energy per mile driven. 320 vs 286 wh per mile according to ABRP.
That means more electricity needed to charge = longer at a charge stop.
If the car had better charging it could make up for this deficiency somewhat.
but on top of being less efficient its charging profile is lower performing.
OVERKILL
$100 Site Donor 2021
It's also quite a bit heavier, which plays into the poorer range.
edyvw
$50 site donor 2025
It is bcs. platform is not EV platform. It uses CLAR platform which is 100% ICE platform. It is modified to fit this in, and with that heavier.
Absolutely irrelevant from BMW view as they are still experimenting with this and unlike Tesla, have ICE portfolio which they as of now, keeping until 2050.
This is simple math, i dont understand whats remotely confusing to you, or why its political?
Even the Ford "Mustang" posts better numbers.
Compromized platform, less efficient motor, bigger battery, 800+ pound overweight, old tech, expensive.
What was the legendary BMW thinking?
Again, the Beemer guys will love 'em, but not the best effort. Tesla is already eating their lunch in Europe. And Giga Berlin is in final prep for production. I am anxious to see how the German culture adds to the Tesla phenonom.
Forbes - Tesla crushes German party
What was the legendary BMW thinking?
Again, the Beemer guys will love 'em, but not the best effort. Tesla is already eating their lunch in Europe. And Giga Berlin is in final prep for production. I am anxious to see how the German culture adds to the Tesla phenonom.
Forbes - Tesla crushes German party
4WD
$50 site donor 2025
Keep in mind that a high percentage of BMW’s start out as a leased vehicle …
Anyone know if that option goes away on EV’s ?
Anyone know if that option goes away on EV’s ?
Here is your statement above. Remember, this topic is about brushed motors.
“If the brushed motor actually increased efficiency the car would be more efficient than its competitors.”
“Its not. Not only is it less efficient its slower charging.”
And then my question.
“Someone will have to explain to me why a brushed motor takes longer to charge?”
Now I have no degree in electricity or electronics but I do know that the motor has nothing to do with the charging rate of a battery pack.
4WD
$50 site donor 2025
Finally saw one in traffic - looked great IMO - still mixed over using the name though
Brushed motors are cheaper to make - BMW is the designer and integrator - they’re having Conti, ZF or Valeo make the parts.
Aren’t brushed AC motors common on trains anyway? There’s already an industry focused on remanning the big motors on GE(Wabtec), EMD, Siemens and Alsthom/Bombardier trains.
Aren’t brushed AC motors common on trains anyway? There’s already an industry focused on remanning the big motors on GE(Wabtec), EMD, Siemens and Alsthom/Bombardier trains.
Ahh I see,
I made two statements and failed to clarify the CAR takes longer to charge.
I see what I did wrong now.
I didnt think anyone would have a problem understanding wha I wrote, but If I had to do it all over again Id take more time and clarify that the car is not only less efficient, but that inefficiency compounds when you add to it the the car doenst charge at a competitive rate in its segment.
I did mention " the car" thus separating it from the motor itself.
Did anyone else misunderstand me?
4WD
$50 site donor 2025
They are AC/VFD now - as are dynamically positioned vessels … IGBT etc …
Working on developing battery/electric instead of diesel electric
Never been great at writing - never came naturally to me.No worries.
OVERKILL
$100 Site Donor 2021
Well, we know it outruns the Model 3 Performance once you get past a certain speed. I'm not sure if we know the motor is less efficient, we do know it is different. The car is a lot heavier, its aerodynamics are likely not as good, so that makes the car overall, less efficient on a mile per kWh basis, which likely also explains why it is fitted with a larger battery.
What is old tech? It has a HUD (the Tesla doesn't) and is extremely well appointed. This isn't a recycled BMW interior, it's new, despite being on a platform that is shared with other vehicles.
Yes, BMW didn't go ground-up (neither did Audi with the e-tron, or Ford with the Mach-E). We are going to see shared platforms from legacy automakers, that's a given as they work their way into producing more and more EV's. Tesla doesn't have that "problem" because they don't produce ICE or hybrid vehicles. But they've had their own share of problems with fit and finish, breaking control arms, brakes that don't hold up to track days...etc. A ground-up EV is no less prone to issues than one based on a shared platform, in fact it may be moreso if that shared platform is already reasonably mature/sorted.
BMW did something different from everyone else with the motors. I'm not sure if that's a best effort or not. I also don't think we can say it isn't their best effort just because the car shares a platform with some others. Platform sharing has been around forever and employed by traditional automakers with all manner of vehicles. It's their way of doing things, Tesla has their way. As EV's become more popular/successful we'll likely see some that don't have crossovers. That being said, a platform can be designed from the ground-up for myriad powertrain options. The DT RAM chassis was designed for gas, hybrid and full EV just as an example. Some of these marques have been thinking about this for quite a while, even if they are behind on the execution.
We know at certain speed it outperformed THAT modified model 3.
We also know its top speed limited lower so it will hit an electronic wall where the tesla wont (or the tesla wall is higher ) .
It was claimed that they dont want it to outrun other models. so they hobble it.
We have 2 independent entities that show its less efficient - the guy that tested it in the other thread - and ABRP has pegged its MPKWH as lower which aligns with the test we've seen.
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