IMSA Technical Spotlight: Rolex 24 Quick-Change Braking Systems | WeatherTech SportsCar Championship
ฝัง
- เผยแพร่เมื่อ 22 ม.ค. 2024
- IMSA super mechanics Bozi Tatarevic and Nate Modderman from the championship-winning Vasser Sullivan Lexus RC F GT3 team show us how quick-change braking systems have been developed in the WeatherTech SportsCar Championship which allow for incredible one-minute swaps during endurance races.
#imsa #autoracing #motorsport #sportscars #rolex24 #rolex2024 #daytona #mclaren #ford #mustangs #ferrari #corvette #lexus #astonmartin #weathertechsportscarchampionship #weathertech #daytonainternationalspeedway #gtd
FOLLOW IMSA: International Motor Sports Association
TH-cam: @imsaofficial
Facebook: @IMSA
Instagram: @imsa_racing
TikTok: @imsa_racing
X/Twitter: @IMSA
Download the Official IMSA App for real-time results, timing & scoring.
IMSA.com - Sports car racing and radio coverage, schedules, results and stories. - กีฬา
If you really want to be blown away look up the 12 second brake changes (calipers, rotors, pads)Corvette did at Le Mans. Excellent content. Keep it up.
Looked closer to about 20 but still insane.
check out bathurst 1000!
Those quick-disconnect brake lines are SO cool.
@@spdcrzy For real man
IMSA & Marshall are knocking it out the park with these videos.......
Bozi is the man!
Absolutely LOVING these insider info vids!
Yeah good stuff. Would be cool for F1 to do more mechanical insight videos like these
"The next Bozi in training" love it
Incredible how simplified that process was! Brake system is gorgeous
Thanks Marshall, Bozi, and Nate! My favorite (and best sounding) GTD/GT3 car and team! Go Lexus!
Bozi is the best! Been following him for years love his insight
This is going to be a great series. Love that you started with the brake changes, as many of us wonder about this constantly. 😆
Very cool thanks for the insight.You should see supercars in Australia Bathurst do a brake change.Some teams swap the whole assembly rotor callipers with new pads pre warned in an oven.🇦🇺
LOVE THESE! Thank you Marshall Pruett & IMSA!!
Nice video. Love learning the intricacies of going 24 hours.
That was a treat to see. Crazy how the pads are so thick and caliper so wide that the rotor can be removed with the caliper still in place!
Yalls TH-cam channel is PERFECTION
Great stuff, Marshall. Could you please make a video explaining to us how it works the system that changes the entire disk and caliper? I saw it implemented on Chip Ganasi's cars. Thanks.
These cars run a quick connector in the brake line, similar to the connections you see for air-powered tools. The Teams prepare a second set of calipers, pads and rotors and bleed this system with brake fluid. When stopping they'll disconnect the quick connector, loosen the 2 bolts for the caliper and remove the rotor together with the caliper, then put it back together in reverse.
Thanks for the content! Very interesting to see these details!
Love these videos!
Cool rotors and system.
Surprised they don't use battery tools to remove the 4 bolts. Looks like it would save a few seconds.
There must be a good reason. Because even the prototype teams use the same or similar manual tools.
E: I hope someone knows the reason and comments below.
I'm pretty sure they are not allowed to use battery tools out on pit lane.
They would have to bring the car into the garage for that, which costs way more time than the tool could ever save.
i think its because you dont wanna cross thread thoses bolts in middle of a race ..... might not be the reason tho .....
1) a speed wrench is surprisingly fast, especially with a bit of practice.
2) it would suck to have a battery puke itself right at the most inopportune moment.
2a) dropping one could be Really Bad for the tool.
2b) someone has to keep the batteries charged at all times.
3) battery tools are heavier.
4) as mentioned below, you might catch a bolt going in wrong, before it tears up the threads, a lot more easily by hand than by electric tool.
The KISS theory of doing any task is definitely applied to working a task where "racing" is involved.
One thing they don’t say is the brakes are flaming hot when they’re doing the change. Gloves help but you can feel the heat, burnt my wrist on a rotor doing a change once.
Moar of this!!! 💪🏼 👏🏽
Badass!
Nice piece. Very cool
Mind blowing. 🤯
Neat
Bozi!
Man I wish road cars would come with stationary calipers like that.
More more!
More impressive than a Formula One pitstop, which are so unimpressive
F1 pit stops are impressive because there are so many people around the car and every single person needs to not be the weakest link that makes the stop twice as long
I like the WEC/IMSA rules with the limited amount of people that can touch the car though
Small reminder that the rotor is gonna be a little toasty while he's working with it.
Bozi is Guenther Steiner's long lost brother. His accent is so similar to Guenther
Nice video :) thought you may like a little background on this. This is not the stock Lexus TRD/AP Racing design. The original way to do the brake change was to remove the entire caliper and then the rotor. Problem is the lines and QD for the caliper is way behind the assembly in the wheel well and not really designed for a quick change. You basically would have to almost hug the crazy hot entire front upright and A-arm assembly to change the caliper, just not realistic, too hot and way to slow. When 3GT ran these cars in 2016-17 they had the slowest brake change time in the field at Daytona 24, something like 5 minutes, where everyone else is around 2 minutes. I personally invented, prototyped and fabricated the parts and change method for the modification to the brake calipers in late Dec 2018 while final prepping the cars in Concord NC for 2019 Daytona with AIM VS. Our initial practiced tests showed we could now do a change in 2 min or under. And we did, during the race 2019 the fronts were changed in just under 2 minutes :) Anyone have any questions about this system let me know !
It wasn’t mentioned, but if the calliper pistons are being are being pushed back to accommodate the new pads, another operative will have to draw off the excess brake fluid in the master cylinder reservoir. I was curious to know what these “rotors” were until I realised you were referring to what we English know as brake discs.
Not too sure about that.
There's no more fluid in the system than there was at the start of the race. Squeezing in the pistons just returns the fluid behind them back to the reservoir.
There is enough free space in the the reservoirs to accommodate fluid returning once the pistons are compressed so there is typically not a requirement for anyone to interact with it during a brake change.
The pads are massive. Anyone know the thickness?
Surprised you can even touch the rotor and pads after they come in glowing hot. Good thick gloves and quick hands I guess!
Did they move away from CCB's?
BOZI!!!
Thickest brake pads I have ever seen.
We need this on road cars😂
And let's not forget that this demo was done cold. In the race those components will be north of 500 degrees C...
Can the team enlighten us to why they do it the way they do and not how the GTLM ford GT's did? I remember them taking the entire disc and caliper compressed together off in one race.
Probably money. It is super expensive for those dry break lines they use
@@supersevenn Out brake lines have dry break connectors but the way the calipers are mounted would not offer any time savings to remove them during a brake change.
arent the old pads and rotor (and the caliper for that matter) RED HOT when they have to change them??
As a racemech myself, I can tell you, yes - they are pretty hot. Not glowing, but you'll have to wear special gloves to touch the rotor. We used some pliers to pull out the pads.
Yes they are hot, but you can grab them with kevlar gloves and you don't even feel that they are hot. I was amazed the first time I touched a hot rotor with those gloves
this style of changing is ancient.. supercars been doing it for decades..some change the entire caliper with rotor now....much faster..
Maybe the few seconds that they may lose is not worth the 20 grand it costs to have that system. And the way IMSA races go, with so many full course cautions, they really don't see it as detrimental
It was invented by Shelby's Phill Remington in '66 for Le Mans for the GT40's. It's not how they show it in the movie (Ford v Ferrari) where they remove the entire assembly, it's how you saw it in this vid...rotor and pads only. With the improvement of designs and changing of rules, it has allowed for the whole assembly to be replaced barring the rules of the governing association.
Unlike your road car...
Huh?! My road car has pinned brake pads, and so did my previous one, and to think about it so does my wife's car!