161–170 of 307 posts
That's almost 3Gs of acceleration. Impressive!
If they can get a car to do 9Gs for 2 seconds we're looking at about 635Km/hr !!
The impressive thing to me is the level of traction needed to do something like this. It seems they're taking old tricks and building a "sucker car". https://www.roadandtrack.com/motorsports/a32350/jim-hall-cha... Still neat stuff. Race sanctioning bodies will need to update their rules or these will just be one off bragging rights.
Then there's the Brabham BT46 "Fan car" that actually raced in F1. Once. Before it was banned. :-) https://youtu.be/B294RfWj1QE?si=jxYpIgwtH44at6Bq
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.)
The dragsters need to have a complete engine tear-down after nearly every run, regularly explode in a giant ball of flame, etc.
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.)
I was sure you made a typo and meant 10000 feet, instead of 1000. But after checking, yeah, it makes sense to make the track shorter to avoid the cars reaching even more insane speeds.
Very cool, but also kind of impressive that a Tesla manages this in ~2.5 seconds while doing all the other stuff a production car does. What time would a Tesla get if you stripped out all the extra weight? (seats, glass, electronics, roof, etc. etc.) Video here (900 MB download): https://polybox.ethz.ch/index.php/s/uKWFRcBjtl4foEy/download... (couldn't find it on their YouTube page yet: https://www.youtube.com/@AMZFo…
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…
Kind of. This team is specifically using hub motors, thus bypassing the need for traditional axles. Hub motors are notoriously inefficient, though, so you don’t see them in normal BEVs which typically mount the motors near the center of the axle (as part of an “e-axle”). Basically, this team’s car is purpose built only for acceleration and thus gets away with doing things you wouldn’t see in cars that need to maintai…
[1] https://evcentral.com.au/why-dont-evs-have-four-in-wheel-mot...
That's almost 3Gs of acceleration. Impressive!
i used this calculator[1]. Looks like 3.5 . Just for fun... Now, if we use the forces that air pilots can sustain for 2 seconds we're looking at about 0.35 seconds is around the limit. and 0.3 seconds would create about 11Gs enough to kill you (all according to quick googles of numbers. If they can get a car to do 9Gs for 2 seconds we're looking at about 635Km/hr !!
A typical car crash at 20 mph is around 20 G deceleration.
If you look at racing car crash data, one study reports 50 G as approximately the threshold for when you start to see frequent brain injuries.
Earlier quoted context omitted.
Still wouldn't get close (in the performance sense, where the effort to time gained is logarithmic in nature). This car weighs 309 lbs. The batteries alone in a Model S weight 1200 lbs.
True, but this car has low 300s HP, no torque mentioned that I saw. The Tesla is over 1K HP and torques. The Teslas, for road cars, are pretty stunning for acceleration. Agreed that it's not going to reach this level of 0-100 performance, but it sounds like it can get shockingly close. I've driven Porsches on the track, and the Tesla Model S Ludicrous loaner I had for a few days is startlingly fast. Fast enough that…
Just to put in perspective how ridiculous it is, the equivalent would be if the Tesla was close to 5000 HP and could produce 5000 lbs of suction downforce at standstill.
On a related note in the sports car community its been interesting to watch Acceleration stop being a mark of a performance car. There is even a lot of chatter around this being the end of the supercar segment since there are family wagons that can now do 2 second 0-60 runs. On top of that the speed is now too much for anyone to reasonably use off a drag strip or circuit. Now there is a huge emphasis on engagement, d…
As someone who grew up racing go karts and still enjoys motor sports (mostly F1), the problem I have with e-racing is the lack of sound. The winding noise they make just isn't adequate and really puts me off to the racing.
I'm sure there's some equivalent of putting a playing card into the spokes