Launch mode not as good after update

[Dark-Fx]

I noticed one launch felt weird but I couldn't put my finger on it. Most of my stops are turns so I don't always have an opportunity to do full power from dead stop.

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[DaveA]

If they did reduce it, i really suspect it was to limit warranty claims related to cracked subframes, noisy drivetrains, etc... They might be learning thru claims that they have weakness in certain components and needed to limit torque to reduce the stresses.

And I've never launched mine except from rolling 5 mph and I have a noisy drivetrain...

 

[usofrob]

It could actually be faster 0-60 with a smoother launch. In racing there's a phrase sometimes used "Smooth is fast". Having the jerk off the line could disrupt the tire's traction, then it has to wait to get it back. It's better to not lose traction. We need to get someone with a decent 0-60 / 1/4 mile recording device do a few tests. My model 3 performance is about the same 0-60 as the quad motors, and it lacks the off the line punch. It's less fun, that my previous dual motor Model S with a second slower 0-60.

 

[R1Tom]

And I've never launched mine except from rolling 5 mph and I have a noisy drivetrain...

I think just normal use results in play, but maybe if they really did reduce peak torque, it could be to reduce stress to drivetrain components and subframes.

 

[R1Tom]

It could actually be faster 0-60 with a smoother launch. In racing there's a phrase sometimes used "Smooth is fast". Having the jerk off the line could disrupt the tire's traction, then it has to wait to get it back. It's better to not lose traction. We need to get someone with a decent 0-60 / 1/4 mile recording device do a few tests. My model 3 performance is about the same 0-60 as the quad motors, and it lacks the off the line punch. It's less fun, that my previous dual motor Model S with a second slower 0-60.

On the handful of times I have launched mine, I have not ever noticed any loss of traction. Not to mention if they figured out how to get these into the 2's 0-60, we would see a whole slew of social media posts about it from Rivian..
How they made it faster thru an update....

 

[kyledmb]

Tesla messed with this a while back. They had an "obstacle avoidance" option that came on by default. The loss in initial jump off the line was very noticeable. I'd imagine this is software related. Anything in the release notes about it?

 

[jasonphoto01]

I've always viewed one of the advantages of an electric vehicle as the opportunity to add new features occasionally. It never occurred to me that they could remove features that drew you to purchase. These sorts of things keep piling up, and here recently, for the first time ever, I've started considering reselling as an option.

 

[Zoidz]

It could actually be faster 0-60 with a smoother launch. In racing there's a phrase sometimes used "Smooth is fast". Having the jerk off the line could disrupt the tire's traction, then it has to wait to get it back. It's better to not lose traction. We need to get someone with a decent 0-60 / 1/4 mile recording device do a few tests. My model 3 performance is about the same 0-60 as the quad motors, and it lacks the off the line punch. It's less fun, that my previous dual motor Model S with a second slower 0-60.

Agree. As an EV, it's relatively easy for Rivian to reprogram the acceleration curve, and they could provide the same 0-60 time with a bit less launch power and a bit more power throughout the rest of the acceleration.

This is the fallacy of the butt dyno.

 

[Dark-Fx]

Maybe this means we get Track Mode in 2023.18?

 

[Blueassassin]

So when do they tell us its going to cost to get full power back? I have noticed this on going almost every update. You used to be able to get a pretty good launch in all purpose as well now you pretty much have to go to sport. It saddens me every time I go to show someone how fast it is put my foot in it then see the power bar never comes all the way up.

 

[Zoidz]

So when do they tell us its going to cost to get full power back? I have noticed this on going almost every update. You used to be able to get a pretty good launch in all purpose as well now you pretty much have to go to sport. It saddens me every time I go to show someone how fast it is put my foot in it then see the power bar never comes all the way up.

Beyond the highly calibrated and accurate Butt Dyno, there's zero evidence that anything was taken away.

 

[Blueassassin]

Beyond the highly calibrated and accurate Butt Dyno, there's zero evidence that anything was taken away.

Watch your power bar. When I first got the truck mash the power pedal it would go all the way up unless below 30% now not so much.

 

[Dark-Fx]

Battery is only at 65% right now, and showing slightly reduced regen due to the pack temperature. There is a definite delay from when I'm off the brake pedal and when it starts going hard. Seems like Rivian might be trying to pre-load the drivetrain before really loading up on the power. Might be possible to avoid that by doing it yourself before fully going on the brake, might try again later.

*Edit: This was from last year when I had the truck on snow tires and frozen road. Don't remember what the battery level was at but likely higher.

 

[Zoidz]

Watch your power bar. When I first got the truck mash the power pedal it would go all the way up unless below 30% now not so much.

Right. But Rivian never specified a launch power spec. All they specified was an 0-60 estimated time. If they apply the power more slowly at launch, and increase it greater than previously from 1.5 to 3 seconds, 0-60 could be the same or even faster. We just don't know until somone takes it to a track and does a controlled time test, not a butt dyno.

 

[NashvilleR1S]

Definitely a noticeable delay for me in sport mode doing a launch.

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