s'noJob

Here's a quick vid of my car scrubbing 80 mph in 400 feet on the track. You can see my head tilt forward right at about the 400 feet marker as I hit the brakes. This is when DOT 4 racing brake fluid shines. (I posted this in C5 Gen, but felt it might belong here.)


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63Corvette

If you watched the Italian GP at Monza today, you might have noticed the braking for the chicane after the pit straight. The announcer described it as "Braking from 220mph to about 50mph in two hundred feet (200')". That takes somewhere near 5 Gee decellaration

spdislife

Are they really hitting 220 MPH on the straights there?

e3pres

I think Ricciardo was just a touch under 225.

Zoxxo

Yep.

From yesterday's live web coverage of Q2 on Planetf1.com:
353.9 km/hr = 219.9 mph

Monza is the fastest circuit that F1 runs on. It's been that way for many years. In 2004 Montoya grabbed pole in his Williams BMW with an AVERAGE lap speed of 161.448 mph. Today's race length was 190.6 miles. Hamilton did the run in 79 minutes. That's an average speed of 144.76 mph (that includes his pit stop.) Think what the track would be like without the chicanes.

re: 5g deceleration

One of the problems with this for many drivers has been that the tears in their eyes will keep going and splatter against the inside of their visors. Seriously.

Z//

FASTFATBOY

140 MPH to 60 MPH in about 350 feet, I bumped 350 feet a few times. Hauling 3800 lbs down with a solid rear axle(axle hop) on 275 tires is a dance.

I will work my way down to the 300 foot marker soon.


That F1 crap is nuts to watch, I remember when Jeff Gordon swapped cars with Montoya at Indy. Montoya kept telling Gordon to go deeper and deeper on the brakes.

Gordon said he started seeing spots, the blood was rushing out of his head lol.

s'noJob

I've heard one should "wait till you see God" before you hit the brakes.

For me, I wouldn't be worried about seeing Him the first time ... but seeing Him the second time if I miscalculated.
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FASTFATBOY

When you have a 3800lb car brake hop on you and cut your brake zone down by a 1/3.....you see God, through your eyes rattling in your skull.

Along with loosening bolts, welds in the rear breaking and screws falling out of the dash LOL.

Brake hop at 6:44, this is a mild case. The first time it did it I panicked. Since then I have learned to manage it better.

s'noJob

Get yourself a set of Bilstein HD shocks - that may help any brake hop issues.
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FASTFATBOY

No cure for brake hop in a 4th gen Fbody outside of a de-coupled torque arm.

Car has Koni's on it.

tytek

The E46 M3 that passed you (shame on you ) is a convertible and I didn't see a rollbar. Are they allowed to do HPDE with just the active rollbar headrest-looking things that pop up when the car detects it is being flipped over?

s'noJob

This wasn't an HPDE, this was a local Corvette club renting a track normally used for automotive testing purposes. Some tracks allow convertibles to run top down with no rollover protection.
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