Paul Walker from Fast and Furious died in a wreck...

CGT is the opposite of all other stick shift cars. Unlike other cars, with the CGT you slip the clutch **WITHOUT** touching the gas pedal to move from a standstill.

Touch the throttle and the car stalls, precisely the opposite behavior of all other manual shift vehicles.

 

He wasn't on the throttle. He was on the brakes.

Throttle is not equal to brakes.

The spin occurred when he lifted the brake pedal.
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Err that's what I said ...

 

+1

Awesome technology (straight from F1). It has anti stall build in (providing you don't touch the throttle like you say). I think this is the biggest miscommunication in especially second hand CGT owners.

 

A couple of other big differences with the CGT are that its shocks are horizontal, whereas most drivers are accustomed to the way vertical shocks impact handling, for one thing, and the CGT is a mid/rear engine which also impacts how the CGT handles, gets tailhappy, and how you have to react to recover the tail to avoid spinning, for another example.

The CGT is a different car.

I'd like to know if Porsche timed the brake release for the front wheels to be identical, advanced, or delayed from the release of the rear wheels, too.

All of the above factors in to CGT mishaps.

 

This is where I was confused....he was braking so the weight of the car was biased towards the front (rear end is light). By releasing the brake pedal, the weight of the car should transition back to the rear end and stabilize the rear tail.
But instead the car's rear end gets loose and he spins.

So it must be that he was going too fast into the turn and released the brake pedal too soon. I can't say whether after releasing the pedal he was on throttle or not. But it appears that he spins about a second or so after his brake lights are off. So he may have been transitioning back to throttle - if he was scared and touched the throttle and then lifted, this would have upset the car and put him into the spin.

(I'm watching the video from an iPhone screen so it's difficult to see how long it is from brake lights off/pedal release to spin - looks to be about a second).

 

Notice that the 911 is gaining on the CGT. The 911 made the turn. The CGT spun. Who was going too fast?!

 

Merry Christmas everyone... My contribution.

[ame=http://www.youtube.com/watch?v=DBENjxvbKO8]Russian Airline Stewardesses - Airplane Washing - YouTube[/ame]

 

Merry Christmas with good health and happiness to everyone's family.

 

So what are you implying?

The 911 could have been on a much better setup to go faster into the turn - tires, suspension, etc.

It still appears that the CGT was not on his brakes at all for 2 seconds before the spin, so he could have been throttle modulating or getting back on throttle.
A slight panic lift on throttle would have put him in this spin.

 

You cannot compare the dynamics of a 911 to a mid-rear engine car.


This is the second time someone mentioned the horizontal shock effect. Can someone explain?

 

Oh brother...

 

I am quite sure the 348 would not take a road course in the same path and speed as a 911 (or a front engine rear drive car) look at race videos of 911 vs 5.0 mustangs. They are totally different beasts.

 

You must remember that the drift Meister is so much better at driving and analyzing(criticizing) others that it is below him to explain to mere mortals.

Lots of thread creep here, too.

Having never driven a CGT at speed I don't feel qualified to comment on the tragedy. I will say that it may feel good to blame the car or driver, but any car, any time can end badly and don't feel too proud or invincible if you have never had an incident

 

Best thing said so far in this thread!

 

You can't possible discuss the dynamics of the CGT vs any other car from that one video of a CGT spinning. It's so funny to read this.


The driver in the CGT was off line and made a mistake. It could have happened in a Toyota Corolla. The 911 was gaining on him because the 911 driver is the better of the two drivers in that instance. No other reasoning.

If you early Apex a bus you will rotate it. Most likely top to bottom but it will be rotated.

Stop speculating on the cars handling from one guy that doesn't know how to drive his CGT on a youtube video guys.

FWIW Russian Airline Stewardesses FTW....

 

I believe that a difference in driving dynamics because of shock orientation is BS.

Using pushrods in your suspension design has a few benefits but doesn't change the fact that you are still controlling motion with a spring and damper.

For open wheel cars, it allows the suspension to be out of the air flow.

It allows for lower unsprung weight

It allows you to change the ratio of the movement of the tire vs shock/spring. Where a traditionally mounted coil over would have a 1:1 ratio, you can use a bell crank to change the relation of wheel motion compared to shock/spring stroke.

I am checking with my crack engineering team but until someone shows me otherwise, I don't believe there is a difference in actual handling beyond the benefits listed above.

 

SlowV8, thanks


FWIW, the 911 Carrera was a breeze to drive, it took me the better part of a summer's driving to feel comfortable driving my car at speed, cornering and recovery, and I still have not taken it past 6/10

 

Yea I just didnt have the energy to break out and go all MR science on his ass....LOL...


\ F_{VW}(r) = -\frac{d}{dr}U(r). This yields:

\ F_{VW}(r)= -\frac{AR_{1}R_{2}}{(R_{1}+R_{2})6r^2}


My Banana in the road theory....

 

Not sure whether you guys saw this or not yet, but it appears to have been just recently released...

Paul Walker burned beyond recognition in 100 mph crash, autopsy finds - latimes.com

 

Yea, it's on FoX too:

Autopsy: Paul Walker going over 100 mph, died of 'traumatic and thermal injuries' | Fox News

 

A bit more... NO ALCOHOL in either of them

CARBON MONOXIDE blood level was much higher than normal in both Walker and Rodas... Walker's was VERY high.

Wonder if the CO will be an issue????


"Paul Walker's entire body was charred through the skin it was burned so badly ... this according to the autopsy ... burned so bad none of his organs were suitable for donation.

According to the report ... obtained by TMZ ... Walker's body was laying supine in the passenger seat in a "pugilistic stance" -- that's a defensive position, as if he were bracing himself for impact.

He had multiple fractures throughout his body, including his jaw, collarbone, and left upper arm. There were also various ribs and pelvic fractures.

The report concludes Walker died from "combined effects of traumatic and thermal injuries" sustained from the Nov. 30 crash in Santa Clarita, CA.

According to the report, the L.A. County Coroner is preserving portions of Paul's organs in a jar -- sources tell us tissues are kept for a certain period of time in case of lawsuits.

Roger Rodas -- the driver -- suffered major head trauma with the top portion of his skull fractured and his brain exposed.

No alcohol or drug traces were found in either body.

The report also says there was "scant soot in Walker's trachea" -- suggesting he took a few breaths after impact. Sources close to the investigation, however, tell TMZ, they believe both men died almost immediately.

And the report goes on ... Paul had 14% carbon monoxide saturation in his blood stream ... the normal level is 2%. Roger had 10%.

According to the report ... after impact the car spun 180 degrees, struck a tree and nearly tore in half before exploding in flames."



Read more: Paul Walker Autopsy Report -- Horrifying Injuries | TMZ.com

 

That sounds horrible.

So were they dead before the fire? I'd hope so.

RIP

 

Horrible.

They were both totally unconcious... when the fire started. Dead seconds later.

 

Claimed speeds of 100 mph+ Coroner: Car carrying Paul Walker going 100-plus mph | ksl.com