Endless Sphere

These cars are great for local/commuting duty... there are MANY in my area... but road trips? Not so much. I just got back from a vacation to Maine and we stopped at some service plazas along the way. Some had Supercharger installations... that were always occupied, with other cars waiting. I can't...

jonescg wrote: ↑

Oct 03 2019 7:47pm

I'm sure there's a way to spin this in a negative light... just wait

Its funny if you google it... That's exactly what the main stream media is trying to do....

New record again this 1/4...... Yup they are sure getting close to bankruptcy.... you know while they sell more then they ever have and their backlog of orders is getting bigger and bigger... The other car manufactures are down 10-20% in sales..... Hmm Yup Tesla is going down for sure.. bahahahahaha...

Lebowski wrote: ↑

Oct 01 2019 1:50pm

Why build this boost converter and not just use field weakening ?

Arber, you want to measure after the boost converter, so at the power stages.

Yup boost converter = fail. This is only added losses!

Just because someone else did it doesn't meen its the right way to achieve a goal.

Amber this needs to be isolated! That's why I posted the circuit! Depends on how far reaching you want your power stage blowup to be :wink: Arber, i dont really understand the distinction beween the 400 and 650, but the controller ic needs to see the power stage supply voltage. And if you want your...

Amber this needs to be isolated!

That's why I posted the circuit!

Yeah I used a 100:1 voltage divider to bring it down to 0-5v 5v = 500v Then a isolation chip this one with a op amp and brought it back up to 0-5Vdc isolated on the output. https://docs.broadcom.com/docs/AV02-3563EN I have 2 verions. This one I used to run dual sign/co-sign size 6 controllers for a ...

Only way for an OFFICIAL time is for Nuremberg to put on an event and the cars to come as OEMs otherwise Nuremberg considers it unofficial ......... Yes, but that means you wont see an official time for Tesla for a long while as it is not a production car. Personally, i am more interested in. Disco...

No point bickering over what ifs, could be's and maybe's - neither car has an official time - lets move on and wait for some official times to eventually emerge. :bigthumb: At any rate, they're both bloody quick and I'd happily have either in my garage. Only way for an OFFICIAL time is for Nurember...

? which part ?.. https://www.gizmodo.com.au/2019/09/heres-what-happened-with-teslas-ambitious-first-attempt-at-the-nurburgring/ Yes your link confirms what I said. If (probably when) either of these automakers decide to set an official lap time, they will have be full production cars and go through...

A sadly misinformed pair of Tesla fan boys. They need to get their facts correct. There was no lap time , unofficial , or hand timed, because Tesla never ran more than one lap without recharging. And that means you do not cover a full lap..the exit is before the start point. They did not need hand ...

No time is posted because they have yet to run a 7:20. The data logging reveals that putting together elements of other laps, the car as is will run a 7:20. They are running in a manufacturers pool, they are running into traffic multiple times a lap. Theoretical lap from peak deviation is a standar...

Design constraints really I see it as, as we need more power we have to up the voltage so we dont end up with a bus bar system thick as the back of a distribution switching panel. But if a car has 100kw max then 800v is not needed and the tesla can control more power with less volts so Porsche syst...

Guys, You can charge just as fast at 400v as you can at 800v As for efficiency its very close to a wash... VERY much all the same just 400v needs 2x the thickness of wires. But its about 100x less likely to kill you and 50x less challenging to get the systems isolated and safe. Think BMS...... You B...

? Are you suggesting they never ran a full lap ? But they just spent several days there running laps with the stated intention of setting a time. So why no time posted ? Not even an “unofficial” time ? They were happy to post a time for Laguna At least they qualified for the “Bongard” club. ! Yeah ...

Not seen the axiom where can I find it ? Here is a link to the ES thread and the hackaday challange. https://endless-sphere.com/forums/viewtopic.php?f=30&t=89056 https://hackaday.io/project/164932-axiom-100kw-motor-controller We are top 20 in hackaday now its up to the judges but if we win we get 1...

As I posted the cells exist. But you trade something for the power density... The Maxwell acquisition and Tesla's new patent point at all you need to know ;) https://electrek.co/2019/09/13/tesla-patent-battery-cell-better-performance-cheaper/ Had a little read through it seems this electrolyte addi...

So to get a McLaren beating electric car I need to use high kv motors that can get me to 220mph+ on 400v I'll be using alot of current to supply all the torque I need and even the battery needs to be high discharge cells and with good cooling in place not to hsve power limiting but id be limited by...

We know a standard P100 pack would not last alap without overheating . We do? Most tracks get a few laps with the 100kwh battery before heat is a problem. Also you don't even know what is currently the "standard" battery. As for turning off the thermal cut backs good luck. The model s would be on f...

TheBeastie wrote: ↑

Sep 19 2019 12:52am

I am not really interested in the car race especially when the Tesla they will use is a non-production special testing model.

This is a production Model S just not to be produced for 6 mo-1 year

Hillhater wrote: We know a standard P100 pack would not last alap without overheating .

We do? Most tracks get a few laps with the 100kwh battery before heat is a problem. Also you don't even know what is currently the "standard" battery.

7:23 unofficially timed ! :bigthumb: Porsche's Taycan Turbo, on the other hand, was reportedly a detuned version of the production Taycan Turbo S with stock summer tires. With the modifications, the Model S managed a stellar time of 7 minutes and 23 seconds around Nurburgring, according to a very u...

..... But as i said a 10 kWh pack can only offer a 75kW average power...and there is no way that is enough for a 80% throttle track in a 500kW car.....(even more unlikely in a 1+MW car !)<- ......This is just a blatent lie like you just proven you didn't read the data sheet for the cells. They will...

Without some real data we dont know what pack capacity is needed for a 8 min lap. We have some great data from places like leguna But as i said a 10 kWh pack can only offer a 75kW average power...and there is no way that is enough for a 80% throttle track in a 500kW car.....(even more unlikely in a...

Well, those 200C cells would certainly allow a lower capacity pack,.... but i dont see a 5 kWh pack getting very far around that 8 min lap. An 8 min. (approx) lap time using 5 kWh would dictate an average power of just 37 kW for a 220 km/h average speed ?? :shock: ..improbable ! <- something wrong ...