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Old 08-24-2016, 02:43 PM   #11 (permalink)
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Quote:
Originally Posted by jamesqf View Post
There is no aerodynamic downforce when you're not moving, you know, and not a heck of a lot under 40 mph or so. Barring wind, of course, and it's pretty hard to guarantee that you'll have strong headwinds blowing in the right direction when you want them :-)
Since the P90D came out, I was thinking the only way to get faster has been done already. . . Chaparral 2J.

This eeriely mimics my thought process on the topic of "quickest" production car: Is The Tesla Model S P100D Really The Quickest Production Car Ever?

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Old 08-24-2016, 06:32 PM   #12 (permalink)
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I don't like the idea of converting energy into downforce when I want to go forward.

If I need more thrust than my tires can provide, I'll just strap a JATO or 3 to my car...

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Old 08-25-2016, 01:08 AM   #13 (permalink)
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Quote:
Originally Posted by UltArc View Post
Since the P90D came out, I was thinking the only way to get faster has been done already...
But quick and fast are entirely different things. Quick is how long it takes to get to a certain speed, usually 0-60. The Tesla is quick, but it is not particularly fast for a high-performance car - at least per Google, which says it's limited to 155 mph, while the Bugatti Veyron can reach over 250 mph.
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Old 08-25-2016, 07:47 AM   #14 (permalink)
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Quote:
Originally Posted by jamesqf View Post
But quick and fast are entirely different things. Quick is how long it takes to get to a certain speed, usually 0-60. The Tesla is quick, but it is not particularly fast for a high-performance car - at least per Google, which says it's limited to 155 mph, while the Bugatti Veyron can reach over 250 mph.
Quote:
Originally Posted by UltArc View Post
Since the P90D came out, I was thinking the only way to get faster has been done already. . . Chaparral 2J.

This eeriely mimics my thought process on the topic of "quickest" production car: Is The Tesla Model S P100D Really The Quickest Production Car Ever?*
My message would be clearer if the included link was reviewed. I share your view that general "fast" is closer to top speed, while "quick" refers to acceleration.

That article also notes production cars, while the Buggatti Veyron is no longer in production. My comment on faster was an adjective referring to acceleration, mainly that to get a faster acceleration, we are at our limit without new tire grip levels, or without more downforce. Of course, aerodynamic downforce doesn't occur while stationary- but the 2J can adjust that.
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Old 08-25-2016, 11:09 AM   #15 (permalink)
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Never mind physical limits, what about digestive tract limits??

I have seen one review of the P90D in which the "car guy" reviewer says the rate of ludicrous acceleration actually made him feel nauseous. I've read a few others where the word "vertigo" is used (maybe also implies nauseous).
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Old 08-25-2016, 11:37 AM   #16 (permalink)
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I seen a video of the Tesla engineers talking about the 0 to 60 mph times and could be even better if the road conditions and a better tire (slick) was used. So the Tesla is detuned some what.
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Old 08-25-2016, 11:55 AM   #17 (permalink)
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Quote:
Originally Posted by MetroMPG View Post
Never mind physical limits, what about digestive tract limits??

I have seen one review of the P90D in which the "car guy" reviewer says the rate of ludicrous acceleration actually made him feel nauseous. I've read a few others where the word "vertigo" is used (maybe also implies nauseous).
Nothing compared to a glider winch start.


(liftoff around 2:00)

When the cable gets pulled taut the plane gets moving languishly. Then BOOM comes the power, and two seconds later you get jerked up high in the sky at a near 60 angle; and as you are laying almost flat in the plane, your feet are way up above your head.
Nausea is instantaneous, but just as you get aware peace returns as you're ascending at a constant rate with just the sound of wind rushing over the canopy and the occasional burr, rattle and clatter.
One small jump when the cable releases and you're flying.

Making matters worse you are not in control of the acceleration unlike the car thing.
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Old 08-25-2016, 02:53 PM   #18 (permalink)
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Quote:
Originally Posted by UltArc View Post
...that to get a faster acceleration, we are at our limit without new tire grip levels, or without more downforce.
Or a different propulsion system altogether: https://en.wikipedia.org/wiki/ThrustSSC Though per Google, its 0-60 times aren't all that impressive.
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Old 08-25-2016, 05:51 PM   #19 (permalink)
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Quote:
Originally Posted by jamesqf View Post
Or a different propulsion system altogether: https://en.wikipedia.org/wiki/ThrustSSC Though per Google, its 0-60 times aren't all that impressive.
Is that street legal? Lol
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Old 08-26-2016, 01:53 AM   #20 (permalink)
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Is that street legal?
You might have to add lights and mirrors. And maybe increase the turn radius. On the bright side, it'd sure discourage tailgaters :-)

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