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Topic: Longhorn Football

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Cincydawg

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Re: Longhorn Football
« Reply #266 on: October 19, 2022, 09:48:48 AM »
If I went hard on the throttle in these cars after the apex, the nannies would kick in even though they were set at Track 1.  They told is Track 2 was really for the pros.  The fun part was doing max acceleration from standstill, hammer the brakes hard and bury the trottle and let the revs come up and then come off the brakes.  The cars would really sputter trying to find a balance between tire spin and grip.

On the actual track, these cars were beyond my capabilities without more familiarity.

utee94

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Re: Longhorn Football
« Reply #267 on: October 19, 2022, 10:28:54 AM »
When getting to the finish line first is the only criterion, you drive the car a lot differently. It's a violent movement where you push the limit of physics. The tires will only grip to a certain force. Braking hard to throw the weight forward onto the front tires increases that grip force - allowing you to power harder through a turn. Once you're through the apex, you're hard on the throttle to power out. The tires are operating right on the limits of static friction. Your body is constantly eating all these internal forces as the car slams from forward inertia to side inertia to rear inertia.

When someone else is paying for the tires, suspension, engine, and transmission, it's a fun way to drive (albeit painful).

Many race cars, but especially F1 cars, are designed to last only as long as the race itself.  They're effectively rebuilt completely, after each use.  If a race were ever to run 5 or 7 laps further (at full speeds) than was intended, the majority of the cars would start breaking down and failing to finish.  Of course they have rules in place to prevent this from happening.


Cincydawg

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Re: Longhorn Football
« Reply #268 on: October 19, 2022, 10:33:13 AM »
I think dragsters rebuild their engine partially after each race.  They are designed to make this feasible.


MikeDeTiger

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Re: Longhorn Football
« Reply #269 on: October 19, 2022, 10:40:40 AM »
Many race cars, but especially F1 cars, are designed to last only as long as the race itself.  They're effectively rebuilt completely, after each use.  If a race were ever to run 5 or 7 laps further (at full speeds) than was intended, the majority of the cars would start breaking down and failing to finish.  Of course they have rules in place to prevent this from happening.

Kinda impressive that the engineering can be that precise.  And does nothing to reduce my belief in the I'm-telling-you-it's-a-real-thing-don't-gaslight-me-bro Planned Obsolescence.  

utee94

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Re: Longhorn Football
« Reply #270 on: October 19, 2022, 10:42:01 AM »
I expect they have to do significant work on the transmissions as well.

In F1, the engines and gearboxes are limited by a cost cap, so you can't completely rebuild them each race, but they replace a LOT of stuff.  And yes, they're designed to make this as convenient as possible.  I've seen those guys completely rebuild a car after a major wreck in the 4 hours between practice and qualifying, because if you don't run during qualifying, you're starting last on the grid.  It's impressive.

Mr Tulip

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Re: Longhorn Football
« Reply #271 on: October 19, 2022, 10:46:34 AM »
Heh. Your experience on the track sounds amazing! I've never done that nor anything like it.
I know the basics of how its supposed to work, but clearly doing it with a 'real' car on a 'real' track is a different world. Obviously, there has to be constraints, since racing is about pushing the physics to the limit. Going over that limit likely means damage and injury.

Heck, even when I'm driving a regular, unfamiliar car, it takes me a minute to learn how it accelerates and stops without jerking the passengers around. Learning how to drive with 'both feet' would, well, take some time indeed!

Mr Tulip

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Re: Longhorn Football
« Reply #272 on: October 19, 2022, 10:50:43 AM »
Yeah that's what I'm saying. Racing is about driving the device to its physical limitations. Getting back first is all that matters. Crossing that line right as you expend the last of your fuel would be ideal.

My family members seem to think that pulling into the gas station as the engine dies is likewise the goal.

Cincydawg

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Re: Longhorn Football
« Reply #273 on: October 20, 2022, 08:57:53 AM »
One event we had was a tight gymkhana like affair, for time.  The first 200 feet or so required a full throttle acceleration and then hard braking to make a 90° turn (cones).  My group did it 3x each, I got slightly better, but was still a laggard.  One fellow in our group beat everyone handily.  

Then they had one of their guys do it, they claimed he'd never done that pattern before or even seen it.  He beat our fastest guy handily.  Of course, he knew the car well.  But he was a "pro" of some ilk, part of their team.  

I don't think I could beat his time if I was there every day for weeks.

The most fun was driving on COTA flat out, we were hitting about 140 mph on the back straight.  That got a bit scary, you had to keep at it and then hammer the brakes near the end.  Of course ABS makes this a lot easier, and the computers would iron out a lot of other mistakes for us.  Driving it with all the nannies turned off likely would have meant a lot of grass.

utee94

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Re: Longhorn Football
« Reply #274 on: October 20, 2022, 10:14:16 AM »

The most fun was driving on COTA flat out, we were hitting about 140 mph on the back straight.  That got a bit scary, you had to keep at it and then hammer the brakes near the end.  Of course ABS makes this a lot easier, and the computers would iron out a lot of other mistakes for us.  Driving it with all the nannies turned off likely would have meant a lot of grass.

Our seats for the USGP are at Turn 15 which has an awesome view of the end of that straight (at Turn12).  Overall I really like our seats there in the "stadium complex" that incorporates Turns 12, 13, 14, 15, and we can even see the entrance to the triple apex at 16 which occasionally involves drivers racing each other out of the tight corner of Turn15.

CWSooner

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Re: Longhorn Football
« Reply #275 on: October 20, 2022, 10:25:54 AM »
One event we had was a tight gymkhana like affair, for time.  The first 200 feet or so required a full throttle acceleration and then hard braking to make a 90° turn (cones).  My group did it 3x each, I got slightly better, but was still a laggard.  One fellow in our group beat everyone handily. 

Then they had one of their guys do it, they claimed he'd never done that pattern before or even seen it.  He beat our fastest guy handily.  Of course, he knew the car well.  But he was a "pro" of some ilk, part of their team. 

I don't think I could beat his time if I was there every day for weeks.

The most fun was driving on COTA flat out, we were hitting about 140 mph on the back straight.  That got a bit scary, you had to keep at it and then hammer the brakes near the end.  Of course ABS makes this a lot easier, and the computers would iron out a lot of other mistakes for us.  Driving it with all the nannies turned off likely would have meant a lot of grass.
That gymkhana sounds like an autocross. My brother has a Mazda Miata in which he competes in autocross events.
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Cincydawg

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Re: Longhorn Football
« Reply #276 on: October 20, 2022, 10:32:40 AM »
Yeah, it's an autocross, but this was pretty tight for cars of that size.  We drove both CTS-Vs and ATS-Vs, the latter would have been better as they are smaller and lighter.  The CTS-V is a really crazy vehicle, now called a CT5-V Blackwing, for reasons that, well, there are no reasonable reasons.

2023 Cadillac CT5-V Blackwing Review, Pricing, and Specs (caranddriver.com)

I could see having a CT4-V Blackwing, it's more of a "normal" kind of sedan I think.

CWSooner

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Re: Longhorn Football
« Reply #277 on: October 20, 2022, 08:48:51 PM »
Mustangs and Camaros participate in the same autocrosses that my brother's Miata does. Their greater power does them little to no good on the tight courses.
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Mr Tulip

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Re: Longhorn Football
« Reply #278 on: October 21, 2022, 08:33:45 AM »
Mustangs and Camaros participate in the same autocrosses that my brother's Miata does. Their greater power does them little to no good on the tight courses.
Miatas have a fantastic blend of weight, power, and wheelbase. While other stock cars might launch faster, and some have higher top end, the Mazda Miata puts it together in the "city streets" arena sports (that is, when the track wasn't purpose built for racing with high banked curves, wide straits, etc).

They really stick to the ground and let you power through stuff. My sister sort of inherited a 6-speed 2000 model. After pacing it around the neighborhood a couple of times, I made sure the doors were locked and said, "Watch this!". The curves we'd strolled through at 20 mph I started shooting through at 35 mph and shifting in the middle of them. The tires never balked nor squealed. On a closed course, and after feeling it out, I'm positive I could have gotten much more out of it.

Fun car. Convertible, too!

Cincydawg

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Re: Longhorn Football
« Reply #279 on: October 21, 2022, 08:48:52 AM »
Tires are a MAJOR thing in a tight course.  The cars I was driving had Michelin Sport Cup Twos on them (changed out daily).  With smooth pavement, the suspension is somewhat of a minor factor.

Of course these soft rubber tires don't last long.

It was fun anyway.  But the road course was funner.

 

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