The Q2 production came in at 53,339 vehicles, as Model 3 (28,578) accounted for more than 50% of the production. But this drastic Model 3 production said to be achieved by ignoring the brake and roll test. How much of this is real? Tesla shares battered amid doubts over quality of Model 3 and analysts' ratings
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Did Tesla skip the brake test to double the production for 2Q18?
- Thread starter jammybritton27
- Start date
Tiger
Active Member
This news item has a similar ring to another one that came last year on how Tesla doesn’t know welding. After two weeks of every outfit repeating that FUD ad-nauseam it just died down.
I am sick and tired of these exaggerations and half truths.
I am sick and tired of these exaggerations and half truths.
bdy0627
Active Member
Exactly right. It's just another attempt to take something and spin it negative. This falls under the category of trying to instill fear in Tesla's customer base. Autopilot crashes, battery fires, welding concerns, brake problems, suspension problems, etc... It will be gone in a matter of days to weeks, and then they'll find something else to spin negative.
In the comments section on Electrek, the following was explained by various people.
(1) In an ICE car, the "roll and brake" test is the first time the engine is run; it tests the engine, the transmission, the emissions, and the brakes, as well as alignment.
(2) In an EV, the motors are already tested, there is no transmission, there are no emissions, and the car will get an alignment later in production. This renders most of the test redundant.
(3) Most ICE cars are NEVER road tested, making the "roll and brake" test the only test it ever gets. Tesla track-tests all their Model 3s, including braking tests.
(1) In an ICE car, the "roll and brake" test is the first time the engine is run; it tests the engine, the transmission, the emissions, and the brakes, as well as alignment.
(2) In an EV, the motors are already tested, there is no transmission, there are no emissions, and the car will get an alignment later in production. This renders most of the test redundant.
(3) Most ICE cars are NEVER road tested, making the "roll and brake" test the only test it ever gets. Tesla track-tests all their Model 3s, including braking tests.
This guy is no engineer. He is a analyst long on Tesla. He has no credibility.
Test seemed fully redundant to me as well as I've watched about 1000 cars go thru the test. The tech watches a screen outside the car on the brake and roll machine that tells them what speed to go and each wheel is on a roller. It reports frame and wheel alignment as well as wheel speed sensor checks and confirms braking performance. During the track test these items are done as well as, but the tech is the judge instead of the machine. If the car was out of alignment or brakes were having issues the tech would know as they drive about 200 during a shift.
A person would not be able to tell if one wheel is not braking correctly or if the alignment is correct in all aspects. You need a machine to do this.
Uncle Paul
Well-Known Member
I think the worst thing about this was that they somehow let it be communicated as the “brake” and roll test. It’s really not significant from a safety standpoint but after the June fiasco with the car braking distance being called into,question anything about maybe not being able to brake reliably could be concerning for some.
It also comes off sounding like they were willing to cut corners just to meet some artificially imposed production milestone which is the last thing anyone wants to hear.
It also comes off sounding like they were willing to cut corners just to meet some artificially imposed production milestone which is the last thing anyone wants to hear.
Uncle Paul
Well-Known Member
News Flash...GM and Ford still churning out millions of gasoline powered vehicle when most scientists and settled science shows that they pollute terribly and contribute to global warming, in addition to emminent sea risings that can put all the worlds cities by the sea in danger of massive flooding.
While the technoloby is currently available to Electrify those polluting vehicles, still they continue in the old, dangerous ways.
"See what I did here"
While the technoloby is currently available to Electrify those polluting vehicles, still they continue in the old, dangerous ways.
"See what I did here"
People's reaction to Tesla's cessation of the brake-and-roll test is more than a little overblown, and here’s why.
Tesla changed its testing regimen for the Model 3, and that's OK - Roadshow
Tesla changed its testing regimen for the Model 3, and that's OK - Roadshow
I will note that the person some of you are responding to has already been blocked by me for writing nonsense -- I don't remember exactly what nonsense it was, but it was totally unrelated nonsense -- so not credible.
Leopold Stotch
Member
TaoJones
Beyond Driven
It would be kinda fun if Tesla expanded their phone charger line to include a few retro items. Spark plug, EGR valve, catalytic converter... Bet they could fit a few 18650s into a Holley carburetor and turn it into quite the desk USB hub. So glad I'll never have to rebuild another one of those or make space in the garage that I don't have for all manner of spare ICE parts.
Ideally when the institutional buyers get back from vacation next week, and some analyst or another gets around to issuing a buy rating, then the share price will ascend a tad.
Good thing the driver isn't doing it then...
Edit: per the links provided above...
They burnish the brakes then do a hard stop. The ABS activation at each wheel is proof of 4 functional brakes.
They later do a coast down test which detects alignment or other drag issues the test driver didn't.
Sorry neroden... some people see Bruce Willis
