Regen braking non adjustable ? Deal breaker for me.

[metroshot]

....... There's no one correct answer. It's 100% a personal preference. Every person will have a different experience depending on the vehicle and their individual driving conditions.
.......
So it will be interesting to actually test drive the Slate. I doubt the 1PD non-adjustable regen will be a deal killer for me, but understand why it could be for some.

You hit it on the head!

Agree - it is personal preference.

And yes, would definitely need to test drive it before i would buy.

Nausea while driving is not a fun drive....

 

[Doctors Do Little]

I wonder if the complaint is really aimed at adaptive cruise control and not 1PD. When I use autopilot (ACC)on my Model 3 in bumper to bumper traffic it can be quite jerky. Every time the car recognizes that the car in front of you has moved forward it accelerates harder than I would and then has to brake abruptly when the pace car stops again. I suppose that is really zero pedal driving.

I get your point. The first time I road in a Tesla X in 2018, the ACC was so severe on the interstate that I was nauseous. My boss, the driver, said that he had kind of gotten used to it and thought it was getting better. My wife didn't like the heavy regen on our golf cart and made me turn it off on my Lightning if she drove (like twice?) it. The ACC in stop and go traffic is a different animal and she likes it in her Telluride. I can't comment further until I drive the thing (Slate).

 

[Doctors Do Little]

You hit it on the head!

Agree - it is personal preference.

And yes, would definitely need to test drive it before i would buy.

Nausea while driving is not a fun drive....

Nausea while driving is a hard NO....who signs up for that in anything less than a travel to earth orbit?

 

[metroshot]

I wonder if the complaint is really aimed at adaptive cruise control and not 1PD. When I use autopilot (ACC)on my Model 3 in bumper to bumper traffic it can be quite jerky. Every time the car recognizes that the car in front of you has moved forward it accelerates harder than I would and then has to brake abruptly when the pace car stops again. I suppose that is really zero pedal driving.

Ford's Blue Cruise also has that same issue at low speeds and congested traffic.

I get jerked around so I never use the hands and foot free ACC for anything other than long road trips where speeds are high and spacing is safe.

 

[beatle]

I wonder if the complaint is really aimed at adaptive cruise control and not 1PD. When I use autopilot (ACC)on my Model 3 in bumper to bumper traffic it can be quite jerky. Every time the car recognizes that the car in front of you has moved forward it accelerates harder than I would and then has to brake abruptly when the pace car stops again. I suppose that is really zero pedal driving.

I don't see 1PD and ADAS being linked. ADAS doesn't care whether it uses regen or friction brakes. Tesla went through a pretty rocky period around 2022 when they switched to vision only, and the initial implementations on AP cars was just awful. I bought my 2019 Model S in late 2022 and it was horrendously nauseating in stop and go traffic. It eventually got better, but IMO it was never as good as the original Mobileye system in my 2015 at simply following another car.

I do think that ADAS can only be but so smooth, given how traffic can sometimes check up very quickly, and if you've gotta stop quick, smoothness is secondary to not running into the car in front of you.

 

[seaflyer]

I wonder if the complaint is really aimed at adaptive cruise control and not 1PD. When I use autopilot (ACC)on my Model 3 in bumper to bumper traffic it can be quite jerky. Every time the car recognizes that the car in front of you has moved forward it accelerates harder than I would and then has to brake abruptly when the pace car stops again. I suppose that is really zero pedal driving.

I have the same problem with my Venza but only in adaptive cruise control in stop and go traffic. I suspect the braking function in the cruise control does not like the proximity of the vehicle ahead. It can be feathered but requires very subtle throttle control.

 

[sodamo]

I get your point. The first time I road in a Tesla X in 2018, the ACC was so severe on the interstate that I was nauseous. My boss, the driver, said that he had kind of gotten used to it and thought it was getting better. My wife didn't like the heavy regen on our golf cart and made me turn it off on my Lightning if she drove (like twice?) it. The ACC in stop and go traffic is a different animal and she likes it in her Telluride. I can't comment further until I drive the thing (Slate).

Must be a challenge adapting to your fleet. I have a hard time keeping the controls straight just between two. 😁

 

[Tom Sawyer]

This raises the question: Is the nauseating effect a result of Tesla Full Self Driving, or regenerative braking under the control of a human operator?

 

[Doctors Do Little]

This raises the question: Is the nauseating effect a result of Tesla Full Self Driving, or regenerative braking under the control of a human operator?

I was conflating the two things. 1PD = Annoyance. ACC/FSD = Puke.

 

[metroshot]

My Honda Clarity PHEV has regen paddles behing the steering wheel which makes driving with 4 levels of regen possible.

Guess regen paddles won't happen on the Slate ?

 

[metroshot]

Going to be interesting when Slate reveals in 10 days.

Will their drive system be like a Tesla (1PD only) or will they have 2PD option ?

Test drive is the only way to find out ?

 

[jmason]

When I purchased my Bolt in 2017 1PD took about 20 miles or so to get used to it. I have my Lucid set at the highest level of regen which means it basically acts like a brake when I let off the pedal. The regen in my Lucid is much more pronounced than the Bolt.

Want 2PD? You’ll have it every time you charge the Slate, especially if you go to 100%. Both the Bolt and Lucid do not provide regen when the battery is full, sometimes even less when it is at 80%. A couple of times that has caught me up short.

As people have pointed out it is personal experience that counts. I prefer 1PD with the most regen the better. Grab those electrons however I can but I don’t think I’ll put a solar panel on it like an Aptera 😉

 

[atx_ev]

not adjustable likely means you dont get to control the aggressiveness of the 1 pedal. But you almost certainly will be able to turn it on/off

 

[Adam W]

Want 2PD? You’ll have it every time you charge the Slate, especially if you go to 100%. Both the Bolt and Lucid do not provide regen when the battery is full, sometimes even less when it is at 80%. A couple of times that has caught me up short.

Yikes! That's just what I want in a brake system: unpredictability.

Having different braking performance depending on the battery charge level sounds like a recipe for disaster.

 

[GaRailroader]

Yikes! That's just what I want in a brake system: unpredictability.

Having different braking performance depending on the battery charge level sounds like a recipe for disaster.

I suspect it is true for all EVs. If the battery is at 100% then there is no place for the electrons to go hence no regen. Same thing in extreme cold. When we lived in PA I’ve gotten a warning message that regen was reduced due to the cold temp of the battery. The cars still have friction brakes that you can use when regen is inadequate.

Modern locomotives have something similar to regen except there are no batteries (other than 64V starting batteries)to dump the current in to. It is called dynamic braking and there are giant resistors on the roof that they dump the current generated in to dissipate as heat. Blowers send air over the grid resistors to cool them off. In order for regen to be consistent over all states of charge and battery temps they would need to supplement with friction brakes or add grid resistors like locos to dissipate the energy generated.

Update: Apparently Tesla has already taken the step to supplement with friction brakes to compensate for when regen is reduced. See article below.

https://electrek.co/2022/05/25/tesla-updates-car-software-regular-brakes-regenerative-limited/