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One pedal driving inconsistencies

waitingonanr1s

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I love the one pedal driving in my R1T, but i agree with the post here. The number of times that regen is limited while driving on mountain roads is very frustrating. This is not because of high SOC, there is some other limiting factor in the motor/converter configuration. It is extremely disappointing when you are driving a twisty mountain road and one curve is handled easily with regen and the next one regen isn't there. Makes for a very inconsistent and , at times, dangerous driving experience. They need to provide a braking system option to provide similar deceleration when regen is limited. I believe that Tesla offers this.
I've noticed this occasionally too - and like you can't understand what drives that limitation. Normally it's just a slight reduction in regen in this scenario you describe, but as you mentioned it varies (you just see the hashed section of the regen indicator grow and shrink as it changes, with no indication of why).

The only pattern I can think of is I don't believe I've ever seen this regen reduction occur on a freeway (including long downhill grades).
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PBRAZ

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Since no one else is offering any solutions, let me take a stab at it:

- If you are L2 charging at home, set your schdule to stop charging right after you normally leave. This will keep the battery warm until your departure.

- Another idea is to set the nav to a charger near your destination so that it preconditions the battery, also keeping it warm.

Not sure if these will help, but if the problem stems from a cold battery, they might.

As far as a seamless application of the friction brakes in case of reduced regen, do we know for sure the vehicles are capable of applying the friction brakes? I know the emergency brake slows the vehicle and assume it's the same system, so perhaps.
 

AlanP

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I live in a very hilly area. Sometimes regen is hard, sometimes light, sometimes none. Unpredictable and unsafe IMHO. Especially downhill with tight turns. Havenā€™t encountered this in 11+ years with other EVā€™s Iā€™ve owned. Growing pains for Rivian.
 

HenryThe8th

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take a stab at it:

- If you are L2 charging at home, set your schdule to stop charging right after you normally leave. This will keep the battery warm until your departure.

- Another idea is to set the nav to a charger near your destination so that it preconditions the battery, also keeping it warm.

Not sure if these will help, but if the problem stems from a cold battery, they might.

As far as a seamless application of the friction brakes in case of reduced regen, do we know for sure the vehicles are capable of applying the friction brakes?
Iā€™ve routinely tried L2 topping off my battery within 90 minutes of departure and no difference.

And yesterday I navigated to a RAN fast charging station for 30+ minutes and my battery temp increased from 56 to 58 degrees and motors didnā€™t even break 100 degrees, which makes me think all this chat about preconditioning is mythical.

yes, Audi Q8 that Iā€™ve been courting has really nice brake/regen system. When you press the brake pedal it regens before friction. There are users setting to control the behavior.
 

R1Tom

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Where does a manufacturer then set as the maximum blended amount? Obviously short of full abs lockup, but what arbitrary amound is the correct amount?

I personally love not using the friction brakes at all. And I recognize when the truck is limiting regen. So I hope they would have a setting to allow it to act exactly as it currently does, as I don't want friction brakes kicking in when I don't know it is happening.
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