Delay between reverse and forward?

Wow! 130.3 mph in reverse! Who's going to test if the SE is limited to 93.2 mph (150 km/h) in reverse? The SE's shorter wheelbase will require more driving skill to keep it going in a straight line. Thanks, @Carsten Haase
 
I would think this is a design intent by BMW to give the car that “feeling you are used to” switching from rev to drive. Many other electric cars are harsh when switching reverse to drive. The mini’s smoothness [in pedal control] is a large reason why we bought it.
 
Ha, I have been wondering whether the SE could go just as fast in reverse. But I'm not brave enough to try.
 
Jim In Tucson said:
No gears. Well, no selectable gears. As I understand it, the polarity to the electric drive motor is simply reversed.

I have observed that the speedo also works in reverse. So, my question is, will the SE also go 94mph in reverse? Or is there some artificial lower limitation? Inquiring minds and all.

I guess I’ll be looking for a large parking or deserted airstrip…


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The drive motor is a 3 phase AC motor it has no polarity
 
Urbanengineer said:
I would think this is a design intent by BMW to give the car that “feeling you are used to” switching from rev to drive. Many other electric cars are harsh when switching reverse to drive. The mini’s smoothness [in pedal control] is a large reason why we bought it.
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If the behavior was consistent, I might agree with you. However, sometimes I get forward power immediately after shifting and sometimes I don't. Consistent behavior is the feeling I'm used to.
 
insightman said:
If the behavior was consistent, I might agree with you. However, sometimes I get forward power immediately after shifting and sometimes I don't. Consistent behavior is the feeling I'm used to.
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Are you touching the brake? When I breathe on the brake pedal it’s aggressive af.
 
Smart Wannabe said:
I am not sure if it has anything to do with Winter tire or what. But there is a delay of a few seconds between after i reversed down end of drive way and then Drive and away. And this seems to happen on level ground too between reverse and drive. Have anyone else experience the same? does anyone know what it is. I thought that i can get rid of the delay by putting into Sport Mode but that did nothing.
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This happens to me when I back down my driveway and onto the street downhill so that I need to go uphill after putting in Drive. I've found that quickly pumping the brake pedal three times before shifting out of Reverse makes the car move when I press the accelerator after shifting into Drive. Still a delay because it takes a little bit of time to pump the brake pedal three times, but it seems like less delay than just waiting for the car to decide to move if I don't pump the brake pedal.
 
CoachCookie said:
That sounds like quite a nuisance. I sure hope that isn't normal behavior for these cars :/
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Unfortunately, it's not only frequent, but inconsistent and potentially dangerous. Sometimes I shift from reverse to forward and take off immediately, while other times, I have to hit the brakes to avoid coasting backwards into something.
 
Puppethead said:
As I've mentioned before, neither have I. Maybe it's a driving technique issue?
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What technique do you use to shift from Reverse to Drive? I just yank on the shift lever. Do you always use the brakes to come to a complete stop before shifting?
 
Puppethead said:
As I've mentioned before, neither have I. Maybe it's a driving technique issue?
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In my experience, it happens after I reverse downhill a few car lengths and then put it into Drive to go uphill. If I reverse out of a parking space in a parking lot, it doesn't happen. I don't know much about physics and so maybe I'm using the wrong term, but I've thought of it as having to do with change in momentum.
 
insightman said:
What technique do you use to shift from Reverse to Drive? I just yank on the shift lever. Do you always use the brakes to come to a complete stop before shifting?
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I think you may be on to something there. I haven't had this issue but do generally come to a stop (or close to a stop) with the friction brakes before trying to drive forward.

Because the car regens in reverse too, i'm guessing the car needs to come to a complete stop before it'll actually switch modes into drive (even though it says drive).
 
I’ve not experienced this issue either. I generally only go from D to R or vice versa when I’m stationary and I’ve usually use the friction brakes to stop when manoeuvring.
 
I've experienced it occasionally if I don't come to a complete stop, usually when I've backed out of a parking space.
 
insightman said:
What technique do you use to shift from Reverse to Drive? I just yank on the shift lever. Do you always use the brakes to come to a complete stop before shifting?
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I never think about it, but I'm pretty sure I always touch the brake out of habit when I want to change directions. Probably due to driving manual transmission most of my life, it's how you avoid damaging the gears.
 
Experience this all the time as I back down a flat driveway out onto a hill (happens even on flats.) Just have to account for it or brake pedal, even in high regen. Every EV I've had does this differently. In my 500e it made a terrible sound unless you were dead on 0mph in and around changing gears. In my Bolt it gradually transitioned with minimal rollback, with no hesitation if you floored it. It by far had the most intuitive pedal control of the bunch.
 
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