The record has been broken

As a general rule, I am not impressed by Porsche (mostly stemming from the fact they made the Boxster), but that is damn impressive. Impressive car. Impressive driver.
 
The RPM control and the braking blow me a way. Going fast is so much more complicated in these cars then lift, dab, and turn left.
 
obullfish said:
I’m thinking the speed is Km per hour. Not that impressed if that’s the case. If I’m wrong then I’m impressed.
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You should be impressed, even though it's in KPH. As @DSM Turbos stated, it topped out at 228mph. Rev limited. I'm curious what it could hit with different gearing, because it didn't sound like it was struggling to get to redline in 7th gear.

I love this part. Quoted from a Motor Trend article. "With a 2.0-liter turbocharged V4 engine paired to a hybrid system, the 919 Hybrid Evo delivers a total output of 1,160 hp. This power is routed through a sequential 7-speed racing gearbox." 2 liter turbo hybrid! I'm guessing the "boost" gauge is to show the electric motor kicking in, not the turbo.
 
obullfish said:
I’m thinking the speed is Km per hour. Not that impressed if that’s the case. If I’m wrong then I’m impressed.
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Speed is definitely in Km/h in the video, and if you're not impressed, then honestly you don't know what you're talking about.
 
DSM Turbos said:
You just bought a minivan, your opinion about being impressed by cars is no longer valid :flipoff2:;)
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To be completely accurate, the wife just bought a minivan. But I was complicit in the act.
 
Tacoma747 said:
I was thinking the same @catfishblues , if he had an 8th gear that thing could have easily hit 250mph on the long straight.
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And by the look short thereafter taken flight.....it looked light and loose.
 
WARRIORWELDING said:
And by the look short thereafter taken flight.....it looked light and loose.
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Downforce is actively tuned by the computer depending on vehicle speed, steering angle, etc. Guessing based on similar (lesser) vehicle specs, the system is likely capable of generating a couple thousand pounds of force.
 
shawn said:
Downforce is actively tuned by the computer depending on vehicle speed, steering angle, etc. Guessing based on similar (lesser) vehicle specs, the system is likely capable of generating a couple thousand pounds of force.
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Which in turn could equal a drag coefficient? I'd want the minimum required for the maximum speed.
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From what I understand it's not the power you're making, at those speeds you're fighting air friction, I can't remember the equation but you start to hit an exponential curve. Could you imagine that thing in a vacuum!
 
Yes, the target is the best L/D (lift to drag) ratio so you get the most downforce with the least drag. The lift is a negative number because it's downforce. There is no magic number though, because downforce changes dynamically with speed on both ends of the car, so there are tradeoffs for front/rear aero balance that can make the car oversteer or understeer depending on the speed, yaw angle, etc. Traditionally you'd set the car up for particular track characteristics and then just deal with the non-ideal areas where the setup is compromised.
So it's a compromise depending on the track, which is where the active aero becomes very useful; the aero can adjust with speed, etc., and remove some of those compromises.

Yes, top speed is a function of power and drag (including gearing as part of what affects available power and how long it takes to get to Vmax). The drag force is proportional to the square of velocity (that's the exponential that someone mentioned).

49willys said:
Could you imagine that thing in a vacuum!
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You wouldn't make any downforce so it couldn't turn a corner very fast, and you wouldn't have any air to feed the engine with, or cool anything. At that point the body shape would be completely different, because you would then optimize it for top speed (like a land speed car), not cornering. ;)
Even electric cars need a LOT of cooling when you generate that much power for that length of time. Battery packs especially...
 
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