New world record with an electric racing car: From 0 to 100 in 0.956 seconds

Post by 1-more » Wed, Sep 13, 2023, 12:19 AM UTC

munificent wrote: post #173

1-more wrote: post #141

Earlier quoted context omitted.

> Factories used to have bands and axels taking power from one central steam engine to all corners of the building. From my own experience: a popular home woodworker tool from the middle of the 20th century is a Shop Smith. It had a motor that you would couple to the various mounted attachments to run the lathe or the band saw or the table saw etc one tool at a time. I guess part of the appeal was certainly the size…

Tractors, still widely used today, as essentially a mobile version of this. One of the main purposes of a tractor, compared to other farm vehicles, is that it has a power take-off [0] to enable the engine to drive other farm implements like combines. [0]: https://en.wikipedia.org/wiki/Power_take-off

Post by js2 » Wed, Sep 13, 2023, 12:20 AM UTC

epolanski wrote: post #193

js2 wrote: post #68

Impressive but for reference, about half the acceleration of a Top Fuel dragster, which are also still getting faster. Here's Brittany Force who holds the current records (fastest time, fastest speed): https://www.nhra.com/news/2022/brittany-force-sets-national-... 0 to 338.43 mph in 3.665 seconds over 1000 feet. (The cars got too fast for 1,320 feet and have been racing 1000 feet since 2008.)

Aren't electric cars bound to beat any dragster car eventually? You get max torque instantly.

Post by mrb » Wed, Sep 13, 2023, 12:28 AM UTC

lucgommans wrote: post #216

chungy wrote: post #189

Earlier quoted context omitted.

I use calculators plenty, but I neither have that one installed nor use it. On my PC, I use either grpn or units. More often, I pull out my HP 48G+.

GRPN for anyone else who doesn't know it: http://lashwhip.com/grpn.html What I meant to say is that, if one uses a featureful calculator like qalc, then you get unit conversion included without needing two separate utilities. Of course, if you've used a(n obscure) calculator for decades then it may be easier to learn to use a separate unit convertor instead

Post by itishappy » Wed, Sep 13, 2023, 12:35 AM UTC

93po wrote: post #146

KennyBlanken wrote: post #128

Earlier quoted context omitted.

The dragsters need to have a complete engine tear-down after nearly every run, regularly explode in a giant ball of flame, etc.

I thought maybe this was a superficial tear-down but nope, it's a whole heckin teardown and measurement of components and relubing and cleaning and etc. https://www.youtube.com/watch?v=I1RYmUxUqso Also the end of this video gives an awesome perspective that really shows the insane speed of these cars.

Post by jamiek88 » Wed, Sep 13, 2023, 12:42 AM UTC

michaelteter wrote: post #227

lifeisstillgood wrote: post #133

One of the photos really brought something home to me. Where I would expect to see an axle or something to provide torque to wheels from the engine, there is just a yellow wire. I know that's how electric cars work. But something about it in the racing car context just brings it home to me - electricity just works differently to all our other intuitions about the world. Factories used to have bands and axels taking p…

The "instant" torque provided by electric motors compared to traditional IC/drivetrain systems is really sexy, but what is perhaps more useful is the vastly quicker power modulation that is possible with electric systems. Electric cars can manage traction control so much more precisely that they can do seemingly impossible things. This snow climb comparison between various Audis - IC and electric, demonstrated that e…