Hacker News Board Hacker News, browsed like a classic message board
Live data from Hacker News

That Tesla Data: What It Says and What It Doesn’t

wheels.blogs.nytimes.com

Post reply on HN
Print view View original

81–90 of 281 posts

Re: That Tesla Data: What It Says and What It Doesn’t

#81

Post by niggler »

smsm42 wrote: post #62
Lewisham wrote: post #21

Earlier quoted context omitted.

> That does not make any sense either. Any kind of consumption will ultimately reduce the available range, you don't restore by removing joules from a pack. I think what is happening is that he thinks the battery actually does have the charge, but the estimate is incorrect because of the cold. What he thinks is going to happen by driving is that the battery will heat up and become more efficient, and the estimated ra…

That seems to be plausible explanation, but I don't see how you give such advice to somebody on the road. You have two potential situations: 1. Battery has lost some charge for unknown reason, and has to be recharged. 2. Battery has proper charge, but the estimate is wrong. If you act according to true scenario, client is happy in both cases. If true scenario is 2 but you act like it's 1, the client wastes and hour t…

"If the support person gave different advice, he was setting himself and his company for the mess up, and the mess up ensued."

This is why we need the call logs. And I fully suspect Tesla records them, so the fact that it wasn't released may suggest that Broder's account was indeed correct

Re: That Tesla Data: What It Says and What It Doesn’t

#82

Post by [deleted] »

JoshTriplett wrote: post #58
jacquesm wrote: post #3

Two bits are completely non-sensical to me, is there any battery technician or otherwise knowledgeable person that can indicate in what conditions this makes any sense? > Beginning early in the morning of my second day with the car, after the projected range had dropped precipitously while parked overnight, I spoke numerous times with Christina Ra, Tesla’s spokeswoman at the time, and Ted Merendino, a Tesla product p…

Hopefully all the calls to Tesla started with the usual "your call may be recorded for quality or training purposes".

[deleted]

Re: That Tesla Data: What It Says and What It Doesn’t

#83

Post by aethr »

smsm42 wrote: post #62
Lewisham wrote: post #21

Earlier quoted context omitted.

> That does not make any sense either. Any kind of consumption will ultimately reduce the available range, you don't restore by removing joules from a pack. I think what is happening is that he thinks the battery actually does have the charge, but the estimate is incorrect because of the cold. What he thinks is going to happen by driving is that the battery will heat up and become more efficient, and the estimated ra…

That seems to be plausible explanation, but I don't see how you give such advice to somebody on the road. You have two potential situations: 1. Battery has lost some charge for unknown reason, and has to be recharged. 2. Battery has proper charge, but the estimate is wrong. If you act according to true scenario, client is happy in both cases. If true scenario is 2 but you act like it's 1, the client wastes and hour t…

This is very true and it's a well known customer service approach. That's why the guy taking your pizza delivery order tells you it will be 45 minutes even though it only takes 5 minutes for them to make a pizza.

Re: That Tesla Data: What It Says and What It Doesn’t

#84

Post by revelation »

Certainly, and as Tesla’s logs clearly show, much of my driving was at or well below the 65 m.p.h. speed limit, with only a single momentary spike above 80. Most drivers are aware that cars can speed up, even sometimes when cruise control is engaged, on downhill stretches.

That sounds very very unlikely with the regenerative braking. They call it single pedal driving for a reason - the braking is pretty strong.

Re: That Tesla Data: What It Says and What It Doesn’t

#85

Post by RubyPinch »

stcredzero wrote: post #47

> I do recall setting the cruise control to about 54 m.p.h., as I wrote. The log shows the car traveling about 60 m.p.h. for a nearly 100-mile stretch on the New Jersey Turnpike. I cannot account for the discrepancy, nor for a later stretch in Connecticut where I recall driving about 45 m.p.h., but it may be the result of the car being delivered with 19-inch wheels and all-season tires, not the specified 21-inch whee…

well, assuming that the cruise control / rest of car was aware of the tire change, but the logging system wasn't

you have the motor spinning faster to make up for the smaller tires, while the logging system just sees the motor spinning faster.

however, as counterpoint to this, the read distance would probably change as well (unless the logging system was only partially aware). Then again there was some discrepancies with the travel distance as well, but that discrepancy isn't nearly enough to account for it.

Re: That Tesla Data: What It Says and What It Doesn’t

#86

Post by andrewfelix »

nikcub wrote: post #42

The biggest mistake Elon made in his response was to dump all that data and to attempt to tear apart each part of the review. This means that the rebuttals now involve taking pieces of that and disproving them in the aim of disproving Tesla's entire argument. Tesla should have posted nothing more than a single line statement saying that Broder left the last charging station for a 65 mile trip with 32 miles on his ran…

I think the biggest mistake he made was accusing Broder of intentionally making the car fail in attempt to discredit the concept of an electric vehicle.

It's one thing to present data that contradicts the article. But to suggest possible dishonest motivations was a step too far.

Re: That Tesla Data: What It Says and What It Doesn’t

#87

Post by jimmyyoung »

kdsudac wrote: post #57

I get why Musk feels like he needs to defend his company but I think he may be doing more harm than good on the PR front. Do you think the average Tesla customer is going to want to wade through a bunch of plots of battery charge vs distance, etc? I think the takeaway for the average Tesla customer might be along the lines of "hmm, this seems really complicated.... am I going to have to keep the heat down while I dri…

Musks blog post is meant to be technical. It's not directly towards the average Tesla customer. The average customer is probably not going to be following this.

Thousands of newspaper are going to write an article everything that happens. They will make it more reader-friendly.

Repeat: It is not Musks' intent for customer to read his blog.

Re: That Tesla Data: What It Says and What It Doesn’t

#89

Post by damian2000 »

Musk and Broder should have got together and nutted out their differences in person instead of having this public bun fight.

When I first read Musk's piece yesterday, I thought Broder must be some sort of malicious a-hole, but after reading Broders first response and now this, his second response, I'm thinking its just a case of Musk being overly optimistic as to the capabilities of his product, and Broder being overly pessimistic.

Re: That Tesla Data: What It Says and What It Doesn’t

#90

Post by csallen »

tomkarlo wrote: post #12

> "I was given battery-conservation advice at that time (turn off the cruise control; alternately slow down and speed up to take advantage of regenerative braking) that was later contradicted by other Tesla personnel." This is one of the more bizarre statements in this whole discussion. Why would anyone with the slightest understanding of electric cars or physics believe that to be true - and I mean the reporter, as…

To be fair, battery "conservation" is different than a battery "recharge".
Post reply on HN