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  1. G

    request for battery temperature data

    Keith Ritter is our consultant. He's a PE, BSME. I'm a BSME. We publish our work on insideevs web site. Here's a link to our articles. https://insideevs.com/info/team/george-bower/ Keith is the heat transfer expert and wrote the spreadsheet for the Thermo-electric model we are discussing...
  2. G

    request for battery temperature data

    Thx Randy. I passed it on to our heat transfer consultant. I'll get back w/ his response
  3. G

    request for battery temperature data

    Do any of you Tesla owners have TeslaFi (or equivalent) data acquisition in your car?? The reason I ask is I need battery data to calibrate our heat transfer model. The particular question I have is the following: What temperature does Tesla heat the battery to when they pre condition the...
  4. G

    Help requested on simple thruster calculation

    Finally found Musk quote. It's more like 10 thrusters placed around the car. "SpaceX option package for new Tesla Roadster will include ~10 small rocket thrusters arranged seamlessly around car. These rocket engines dramatically improve acceleration, top speed, braking & cornering. Maybe they...
  5. G

    Help requested on simple thruster calculation

    Here's the numbers from the performance model prediction for acceleration with a 1200 lb (20 lb/sec) thruster and a 2400 lb (40 lb/sec) thruster. BXR140 commented that my 20 lb/sec thruster was a big one and I'm starting to believe him after doing some searching. I found some 1000 lb thrust...
  6. G

    MCU with Bubbles

    If the only problem is a bubble, then it is a lot less expensive to just replace the touch screen. I'm assuming you are out of warranty. you just buy a used touchscreen that doesn't have a bubble from a newer Model S. I got mine for 500$ (just for the part) and installed it myself. If you are...
  7. G

    Early Model S MCU Removal- Helpful tips not in the Shop Manual

    I'm going to bump this since there's lots of action in the MCU department.
  8. G

    Buying a 2015 Model S85; Advice/Comments : )

    It depends on your mechanical aptitude. I did my own door handle but I wouldn't suggest to a novice with no mechanical experience. and of course not ALL displays get bubbles or yellow bands. ..but apparently there are so many cars with yellow bands now Tesla has stopped covering them on warranty.
  9. G

    Buying a 2015 Model S85; Advice/Comments : )

    I had a 2012 Model S that was out of it's 4 year general warranty. First bit of advise. Never own a Tesla that is out of warranty. ALL model S's have screen issues. The early ones the screen gets a bubble around the edge that gets bigger and bigger because the liquid in the display leaks out...
  10. G

    Early Model S MCU Removal- Helpful tips not in the Shop Manual

    If you own an out of warranty Tesla then chances are you will be doing some of your own work. I successfully replaced my door handle so, when my MCU display got a bubble in it I decided to tackle it myself. All it cost me was the 500$ for a used display w/ touch screen. The display w/ touch...
  11. G

    Help requested on simple thruster calculation

    Tesla Roadster
  12. G

    Help requested on simple thruster calculation

    I assumed 100 lb of air (mostly N2) discharged in 5 seconds= 20 lb/sec
  13. G

    Help requested on simple thruster calculation

    Agreed I can't find it on a google search. BXR140 above commented that the thruster I calculated in the OP is a big one. Maybe the 1200 lbf thruster I'm looking at IS bigger than current tech.
  14. G

    Help requested on simple thruster calculation

    I was referring to the thrusters that are by the grid fins.
  15. G

    Help requested on simple thruster calculation

    Thx bxr I got 1200 lbf so our math agrees. I used 1200 for the roadster 0-60 time calc w/ thrusters. Roadster 0-60 times calculated with cold gas thrusters Do you know how many lb thrust one of falcon nine first stage thrusters is that they use for landing the booster?
  16. G

    Help requested on simple thruster calculation

    I am trying to figure out how much thrust a certain cold gas thruster would produce. Assume specific impulse=60 seconds and a mass flow rate of 20 lb/sec on earth at sea level What is the calculated thrust??? Thx, George
  17. G

    Roadster 0-60 times calculated with cold gas thrusters

    We have a computer model of the Tesla Roadster. We calculated the forward thrust provided by the cold gas thruster, then added that thrust to the forward thrust from the front and rear axles and re calculated the accel times. I figured a specific impulse of 60 sec. Thats a bit lower than wiki...
  18. G

    2012 Dolphin Gray Tesla Model S85 Loaded w/ newer “D” battery pack

    Beautiful 2012 Dolphin Grey Tesla Model S 85kWh in excellent condition. This car has a newer "D" battery pack installed at 22,000 miles. Miles: 90500 VIN 5YJSA1CN4CFP01682 265 miles original EPA range - Charges to 249 miles @ 100% now. 85 kWh battery with rear wheel drive spec acceleration...
  19. G

    Model Y body structure change allows a more unobstructed Pano view

    OK thx for input from Model 3 owner. If you are sitting in the back seat of your 3 where is the cross member relative to your head?....directly above?
  20. G

    Model Y body structure change allows a more unobstructed Pano view

    Per Teslarati: " Particularly notable is how well the Panoramic glass roof worked with the Model Y’s SUV form factor, allowing a full, unobstructed view of the sky. It should be noted that the glass roof does not have a center cross member such as the one found in the Model 3, effectively...
  21. G

    Disappointing roll-out

    "Seems like they should just switch an assembly line of the Model 3 to the Model Y sooner than later. It’s basically just a hatchback version of the car." you can add me to the list. I ordered a Model Y but it seems a bit ridiculous to have to wait nearly 2 years for it. Also it's odd coming...
  22. G

    Updated Model 3 Charging Profiles & Durations

    We need someone with an instrumented M3 so we can get a shot of Voltage and current during the charge on a v3 charger. Looks like you own one. You should install the dongle and apps req'd to pull the data!!
  23. G

    Updated Model 3 Charging Profiles & Durations

    Thx for the link. I like Jack's stuff. It seems pretty clear now that the cable from the charge port to the battery may be good for somewhere in the 600-700 amp range but only for a limited time. Please explain the New England comment:)
  24. G

    Updated Model 3 Charging Profiles & Durations

    Thx for answering. my latest thinking is that at lower SOC's we could see 632 amps and 393V= 248 kw Ingineer discovered that the cable between the charge port and the battery was a 3-0 cable and was bigger than model S. It's in one of his videos. He claimed to have the mfg's specs on that...
  25. G

    Updated Model 3 Charging Profiles & Durations

    Hey zoomit, do you have the predicted charger voltage and amperage that goes along with these plots?? I'm mostly just interested in the M3LR RWD.
  26. G

    Supercharger V3 unveiling in Fremont

    anybody have current and voltage during the charging session? Ingineer said he had the specs on the cable that runs from the charging port to the battery and it was good for 430 amps. Also the preliminary leaked specs said the v3 chargers were good to 500V out put. Would be interesting how some...
  27. G

    Tesla M3 owners getting short changed on battery capacity?

    Right and the performance model does not make its advertised range. and it does not use the full capacity of the pack.
  28. G

    Tesla M3 owners getting short changed on battery capacity?

    Ingineer hacked the M3 computer and found that the "full pack capacity capacity" was 76 kwh Tesla Model 3 gets hacked, reveals more details and great potential for dual motor/ performance versions Jack Rickard took apart a model 3 battery module and determined that the cell was 4.8 a-hr and a...
  29. G

    LR owners-What's the most kwh's you've ever pulled from your battery?

    We just had a video from Jack Rickard on a Model 3 Battery teardown here In that video he estimates the usable a-hr rating of the M3 2170 battery at 4.8 a-hr and a usable kwh rating for the whole pack as 76 kwh. Ingineer hacked the M3LR and found a usable energy of 76 kwh...
  30. G

    How good (or bad) is the old Mobileye AP

    Thx for all the replies. It's interesting that no one has differentiated hardware 2.5 I was aware of the AP2 vs AP1 discussions of earlier days but I kind of expected people to be raving about 2.5 but it appears not so. I was thinking a used Model 3's AP2.5 would be better than the old Mobileye...
  31. G

    How good (or bad) is the old Mobileye AP

    NoA? I don't know that acronym
  32. G

    How good (or bad) is the old Mobileye AP

    @az rael I would like the extra range as well. What do you think about the 18in wheels with Aero hubcaps versus the 19 in wheels ? Personally I can't stand the look of the new Arrow hubcaps but if there really is a 10% degradation in range by going to the 19 inch wheels it's a tough decision.
  33. G

    How good (or bad) is the old Mobileye AP

    Thx. another good report on good old AP1. I'd ask the same question to you as AZ Rael-- after having a MS P85D and a MX 90D. How does your M3 stack up? Just noticed your from Davis, Ca. LOL I graduated from Davis Sr High in '67!
  34. G

    How good (or bad) is the old Mobileye AP

    I'm torn on M3. Great range but I've seen some Model S drivers switch to M3 and been disappointed. I notice you had a P85D and now M3 LR RWD. How does the M3 stack up w/ your P85D? Are you wishing you went w/ the performance M3? Can you stand that trunk in the M3?
  35. G

    How good (or bad) is the old Mobileye AP

    both very helpful inputs thanks! That's a little better report than I was expecting.
  36. G

    How good (or bad) is the old Mobileye AP

    I've got 2 Tesla's on my radar. a used Model 3 LR RWD w/ AP or an older Model S P85 RWD w/ Mobileye AP So I have a question for the owners of the old AP that ran the Mobileye platform: How does it compare w/ the latest and greatest AP? Obviously the new system must be better, lots more...
  37. G

    2014 Tesla Model S - P85+ - Selling for $43,500K

    hey thecloud. I notice you have a 2014 with the old mobileye AP. could you comment on how well it works compared to Tesla's latest and greatest AP?? How good is it on a curvy road?
  38. G

    BUYING A CPO From Tesla- Experience from "Rich Rebuilds"

    I watched the video. It's a real eye opener. Tesla's used car program is just as messed up as their service centers. In the old days you could call the SC and talk to someone at the service center you dialled. Now, you can't get a hold of a person and ask any questions. They don't answer...
  39. G

    Feedback on potential sale of 2017 Model X

    Looks like there's 1, 100D on ev-cpo @93K. that tends to back up KBB
  40. G

    Feedback on potential sale of 2017 Model X

    Just ran KBB. used LA zip. gave u credit for very good condition. trade in value = 86055$ private party seller= 90297$ Most here discredit KBB. I've found if they are selling they say KBB is too low. If they are buying they say KBB is too high. My experience is it's a pretty decent number...
  41. G

    Feedback on potential sale of 2017 Model X

    I just started looking at used Model X's. What don't I get if this car does not have PUP? Also the seats are a big deal. If this car has fold flat 2nd row seats you should mention that. So it's a bit of a stripper in the sense it is not a P and has no PUP which is actually a selling point since...
  42. G

    Supercharger - Payson AZ

    today is Christmas eve day. I stopped in yesterday (sunday) and still no juice. Jan 3 sounds about right. waiting for an inspection no doubt. City of Payson moves very slow. All the locals in their pick-em up trucks will wonder what a Tesla is while they park there and eat their subway...
  43. G

    Supercharger - Payson AZ

    today is Christmas eve day. I stopped in yesterday (sunday) and still no juice. Jan 3 sounds about right. waiting for an inspection no doubt. City of Payson moves very slow. All the locals in their pick-em up trucks will wonder what a Tesla is while they park there and eat their subway...
  44. G

    what month does my 8 year warranty expire?

    I'll look again. I didn't see a date the last time I looked but I might have missed it. I also looked on the center screen where the mileage and S/N are and did not see it there either
  45. G

    what month does my 8 year warranty expire?

    Yes. but I've given up trying to call the SC. I get put on hold forever. They don't answer emails either.
  46. G

    what month does my 8 year warranty expire?

    My 2012's warranty will expire in 2020 I'm assuming my warranty started when the original owner took delivery. Is that correct? How can I find that date? Thx, george
  47. G

    2018 Model 3 for sale. White, 18" rims, Autopilot, LR RWD

    are those the stock wheels minus aero hubcaps??
  48. G

    help trouble shooting door handle assy issue

    I replaced the left front door handle assembly yesterday in my 2012 Model S with a salvage unit ind the new salvage unit is working fine. Now I have the faulty unit on the bench and I'm troubleshooting what's wrong with it. Here's the symptoms of the bad handle assembly prior to removing...
  49. G

    Supercharger - Payson AZ

    LOL I'm a local Payson area Model S owner but my friend Mark Z informed me of the progress!! Thx MarkZ!

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