Driver-adjustable Regen

[Nik]

A snippet from the TTAC contributor's write-up of the Model S beta factory tour. For those who have strong opinions on the subject, this might be of interest.

http://www.thetruthaboutcars.com/201...s/#more-413446

“Tesla’s brake system is just as efficient as Toyota’s, and we’ve done the dyno testing to prove it,” says Baglino. What’s not widely known, he says, is that the Toyota system does indeed apply the friction brakes slightly whenever the brake pedal is used. This smooths the transition to full friction braking when necessary.

When I pleaded for driver-adjustable regen on the Model S, he said this was under consideration. (Two days after the event, while writing up this report, on a whim I e-mailed Tesla boss Elon Musk and repeated my plea for driver-adjustable regen. Three hours later, I got this reply: “I totally agree that regen should be driver-adjustable and it will be on Model S.” The message was Cced to JB Straubel, Tesla CTO.)

Way to go with the customer feedback, but I do hope Elon isn't seeing himself as some form of replacement Steve Jobs.

[AnOutsider]

A snippet from the TTAC contributor's write-up of the Model S beta factory tour. For those who have strong opinions on the subject, this might be of interest.

http://www.thetruthaboutcars.com/201...s/#more-413446



Way to go with the customer feedback, but I do hope Elon isn't seeing himself as some form of replacement Steve Jobs.

Why Steve jobs? Because he responded to the email? I +1 adjustable regen though.

[efusco]

That's good news. But as a "Prius Expert" the information in that statement about the Prius applying the friction brakes is completely false. It was true on the first gen prius, but since late 2003 the 2nd and 3rd gen Prius do not apply the friction brakes at all until you get below 7mph or in abrupt/emergency braking situations.

[Citizen-T]

Is it just me or are the tail lights in the first video in that article (around 20s) different from the Betas we saw on the tracks? They look more Roadster like.

[Nik]

Why Steve jobs? Because he responded to the email? I +1 adjustable regen though.

That, and the apparent making of policy on the hoof. Do that too often and one day you come a cropper.

[vfx]

Is it just me or are the tail lights in the first video in that article (around 20s) different from the Betas we saw on the tracks? They look more Roadster like.

Same as the ones in the charge port door picks?

[TEG]

Is it just me or are the tail lights in the first video in that article (around 20s) different from the Betas we saw on the tracks? They look more Roadster like.

Yes, there was that one partially finished chassis on the factory floor with the one charge port door people could touch (although no socket behind it) and those big round (LED?) tail light fixtures. My assumption is that they are not anything that would ever see production, and were maybe just a test fixture to make sure the wiring harness could activate the rear lights. They looked like something you could buy at an auto parts store to go on a trailer:



Or maybe those are just buried under the light reflector box that changes the shape of what you see?

[Doug_G]

Having the ability to temporarily disable regen would be wonderful for those rare times you take the car on a track. You don't want it getting in the way of cornering.

For street driving however I'd want as much regen as they can muster.

[vfx]

This is GREAT news.

Now to get it where it can be adjusted quickly while driving. The AC Propulsion E Box has a 4" mechanical slider on the dash. As i have said before I would love a dedicated steering wheel stalk to adjust regen radidly when approaching a traffic jam (more) driving highways (less) heading into the canyons (more) and general hypermiling (less).

I don't think Fanz reads these boards but if there is an engineer reading this please pass it on the design team as well.

[NigelM]

Here you go.....

One of the engineering advantages that make an EV better than any gas-powered car is regenerative braking. When you take your foot off the Model S accelerator, energy is fed back into the battery, which causes the car to slow down (a similar feel to downshifting with a manual transmission). One of our Firmware engineers wrote a great blog about this technology shortly after the release of our Tesla Roadster. Over the past few years, we have learned that not everyone likes the same amount of Regen. Some owners like a little more resistance, some like a little less. Having less Regen means you will likely get less range, but some people still prefer the feel of their car with less Regen. We listened to your requests and I’m pleased to announce that Model S Regen will be adjustable. You can adjust Regen to suit your driving style.