GOPR0963

MAX PAPIS FOOT CAMERA GO PRO FROM ROAD COURSE TEST

[@corymcdermott5096]

The clutch is used for some downshifting, usually on a very difficult section of turns. That is done to keep the "balance" of the car neutral and prevent a spin-out. Basically, push the clutch a bit to eliminate the power from the engine. The transmission is a 4 speed, using a small but very durable single disc clutch. It is known by car guys and racers as a "Jerico" transmission. Most non road course experts need to use the clutch, because of the lack of experience and "feel" for what the car is doing.

[@TLWiltman]

+Cory Mcdermott I would say this is really close, except in my experience these cars either use a clutch with two thick discs or three thinner ones. Usually a 7.25" Tilton or Quartermaster with a "stock diameter" thin steel flywheel.

[@Nebraski03]

How Manuel drivers feel when they have a really smooth shift
Can say this from experience
Feels good man

[@zak4829]

Everyone is tripping about the heel and toe! Hahaha so funny.

[@leftfordeadman1]

Probably using a dog box clutch system. It allows you to shift with just the lift of the throttle or minimal clutch.

[@epmepm7496]

no clutch but you can still use the clutch if you want to

[@simvids1461]

@@epmepm7496 As he does to prevent wheel spin on acceleration and prevent wheel hop on the hard down shifts, likely on rough asphalt corner entries. Also prevents additional strain on the gearbox.

[@victoracvd1109]

the clutch is only need for control rev when he downshifting and the traction when he out of a corner

[@hammer81tn]

The transmissions in these cars don't have synchronizers to prevent you from shifting improperly; ie too late or too early. Most forms of racing use this setup just for the precise shifting. In rev matching, you don't need the clutch nearly at all except for initial takeoff. You use the transmission in conjunction with the brakes, and sometimes using no brake, depending on the speed needed to negotiate the corner ahead. You blip the throttle to raise the engine speed to match the speed of the transmission gear currently being selected. In essence, this is gear banging and can ruin a stock street car, so don't try it. I had to do this once in a 97 GT Mustang while I was headed to work one morning and the clutch cable adjuster had backed off at the clutch fork. I had to rev match in traffic on the highway. I had to revv the car way up to get the transmission out of gear and into the next gear. I had to do this upshifting and downshifting. Definitely not ideal at 6 in the morning when everybody is out and headed to work.

[@Jake93r17]

How can you blip it in gear though(not havering the clutch disengaged with the flywheel) would it just jerk the car?? I'm not question you I'm just confused

[@FezzantPlucka]

jake pennington
You also have to remember that when the driver is between two gears he is in neutral, (similar to if he used the clutch) so he can blip for that split second no problem.

[@TLWiltman]

+jake pennington The way these dog boxes work, is that you have to give just a little throttle just to get the transmission unloaded while downshifting... and take away throttle to unload the transmission for upshifting. It's not a true 'rev match' (think of the dog rings/sliders as kind of like a synchro, but with big gaps and really wide teeth. A true 'rev match' can cause a jam). There's an angle on both locking parts that prevents the transmission from slipping out of gear when it's loaded.

[@americankid1237]

Wooten is a liar

[@SergioPintoV300]

its called heel&toe :) helps rev matching and dont brake the car with the engine... basicly prepares the engine for the high revs :)

[@juanv.7772]

He does it for both RPM matching, as stated before, but also does it to stabilize that car on the front and rear (Equal front load and back load).

[@hdbhehddbz]

Love the wide brake pedal. Gonna make me one.

[@didntstickthe1v150]

He is using Heel and toe (clutching and throtteling) when downshifting to match the RPM's. When you are just clutching/shifting in the corner and then go off the clutch, the car can easily lose the rear.

[@cyclONEnation56]

this is beauty at its finest

[@raymondbanks4103]

Jerico....There IS no substitute!!

[@AS-dc8sq]

Bring back Muncey

[@austinhrkid1]

In NASCAR some guys use the clutch some don't the only time they use it is putting and starting the car when there getting a pit stop there in Netrul with the clutch pushed in when they drop the Jack they slam it in to first and take off do t really need the clutch in those cars they use is down shifting for traction.

[@TeoSocialMedia]

Bellissimo video grande Max!

[@johnsullivan676]

I like that little toe hook, I guess in case the throttle gets jammed open.

[@Goodstegosaurus]

It's a safety feature for if the spring in the pedal mount snaps. Happened to a driver a few years back at Martinsville I think, about 300 laps into a 500 lap race. Guy would nail the throttle, then use it in reverse by using the hook, whilst braking, and worrying about other cars around him.

[@funkyuns1655]

@@Goodstegosaurus who was it ? that would have been it for me .

[@unclaw2012]

DAT REV-MATCH!

[@lemansz]

I’m pretty sure the nascars still had H pattern trans 11 years ago. This is likely a c6r corvette or c7. What ever was current Imsa car at the time

[@EnterGenericUserName884]

Just curious: I noticed that he seems to keep the clutch pedal slightly depressed at times. Shouldn't that burn the clutch? Or does he do that for traction control purposes or something

[@anonymoususer4741]

nutellabananenmist
Like you said, traction control. It will burn the clutch out eventually, buts it's a racing clutch and it's designed to take abuse like that.

[@truckercowboyed2638]

​@@anonymoususer4741I bet by the end of a road race weekend that clutch is completely gone ....no wonder sometimes they have to make a change at the cost of starting at the back...but a burned out clutch isn't good either...

[@billyjack70]

Matching rpm for the down shift.

[@wesleysouzasouza7688]

O pó primeiro pedal da esquerda não e a embreagem ?? Mas como ele usa parece que as marchas entram sem uso, ou é só para reduzidas

[@TheRacingMemes]

É que o câmbio dos carros da NASCAR é um dogbox. Esses câmbios tem sincronizadores com dentes em seu desenho o que possibilita passar marchas sem precisar usar o pedal da embreagem. É só pesquisar "dogbox transmission" no TH-cam que você verá vários vídeos falando melhor sobre isso

[@granpastreetz]

Why do they not use the clutch? Is it because they are such pros, such good drivers, they are shifting when the motor and tranny are synced? I noticed on the hard downshifts, he’ll use the clutch when performing a “heel toe” shift.

[@americankid1237]

These racing transmissions do not require the clutch

[@jasonups5386]

Looks like me in my UPS truck 😎

[@KenTurney]

Will anybody please explain to me what is going on? I never see him pressing the clutch when he shifts.... do they have sticks as well..... what is rev-matching..... is he letting off the gas to avoid powershifting

[@kylebest1219]

In the car hes in i think they have a quick shift in it which means he dosent need to use the clutch he can just lift i have that in my car!!

[@RussellAutosport]

Rev matching is when you make the engine match the revs it needs to be in to go to the next gear. It upsets the car to have the engine running at 3,000 RPM in 3rd gear when the transmission needs it to be running 6,000 RPM to go into 2nd for example. When you press the clutch and blip the gas, it speeds up the engine speed to the RPM it needs to be running under to get into 2nd gear. Pulling out the clutch in the next gear when the engine is not running the speed it needs to be will often times screw up the rear gear and will cause "wheel hop". I believe rev matching also will make the clutch last a lot longer because there's a lot less friction between it and the flywheel when you engage it and both things are spinning the same speed

[@powerfultoa7]

Clutchless shifting

[@jordfoth]

the clutch is really sensitive he is on the clutch all the time all he needs to do is lift his foot off the gas and he can still shift

[@corymcdermott5096]

Its Jordan his foot is just resting on the clutch pedal most of the time, waiting.

[@Kordovaner]

That engine sounds awesome O.o Wow. Is this a Nationwide car?

[@donuttron]

Aaaaaaand half of these is why you never wander into the comments........

[@dagconst1]

I just got off watching some dudes feet

[@joaoa13portugal]

I can't really understand why is there a need for a clutch in a semi-automatic car like this (sounds like V8 supercar challenge, no?). He seems to only use it in first gear, and then, at the start he just lets go of the throttle when upshifting and blips it a bit when downshifting, so i supose these cars dont have any automatic rev matching during up/down shifts. But, the question is, why would he heel-toe when he could just brake and blip the throttle during downshifts whilst approaching a corner?

[@GTLTSlost]

+João Agnelo Not a semi auto. These are regular NASCAR road circuit cars w/dog box trannies. No need to clutch after 1st gear. On the course, at speed, he is rev matching w no clutch needed between gear changes. I think he clutching only when deep into a corner vs just rev matching at high speed w/no clutch

[@Syntax_-_Error]

+João Agnelo so why heel/toe is what you ask? reason is simple and you can see it in the video. he did few downshifts in the beginning of the video by blipping the throttle with right foot, while left foot braking. But can you tell what in the situation was different?
answer: revs were about 2000 rpm lower (judging from the sound).
It's a common missbelief that you can just aswell leftfoot brake as heel/toe (claim usually made by simracers).
There is a valid reason for heel/toe: in situation where you have high revs and high brake pressure simultaneously, margin to get the blip just right for the lower gear to engage becomes very small, and by clutching you increase that margin considerably.
when you compare 2 drivers, one heel/toeing the other left foot braking, the latter usually lets the revs drop lower for the downshift because of this. so there is real benefit in heel/toe shifting. It allows/makes easier shifting down in higher revs while heavy on the brakes.
old vs new race cars:
even tough sequential gearboxes of today makes the shifting faster it does not remove the problem mentioned before. it has more to do with the accuracy and speed of the fuel management system.
In older racecars there was allways mechanical system with distance from the gas pedal to the carburators, and this system never is without some "slack" since its not rigid/solid. This combined to slower reacting carburators (vs. injection) made accurate blips even harder in that situation (high brakes,high revs).
Modern race cars today have much more solid mechanics, ecu controlled fuel injection, and some even with completely electronic pedal systems which all make blipping accurately easier thus lowering or even completely removing the need for clutching, no matter of the situation.

[@BILLUPS811]

It's a NASCAR cup car. And he can only clutchless shift when he's wide open throttle and near the red line, that's why he'll use the clutch on real slow corner entries.

[@alka-seltzermanager8511]

This guy can drive

[@wildanh7806]

Why he not warm up his engine? Is becauase the car uses dry sump?

[@joeyj1617]

Sounds like at the beginning they were talking about some changes so I'm guessing they've already made a run and the engine is already warm.

[@ArtemLokhovitskiy]

I got a question for your, commenters:
I understand why throttle pedal is made of carbon (for more precise control) but why brake pedal is so massive and made of seems like straight up steel?

[@simvids1461]

Carbon Throttle pedal is just because. One of the guys in the shop made it, the driver likes a pedal like that. There are numerous reasons. The Brake pedal is wide so he can use his right foot to brake and blip simultaneously. Some drivers place their right foot horizontal, toes facing right and brake with their heel and blip with their toe. Hence Heel/Toe braking/downshifting as it's called. Some drivers keep their foot vertical and rock the pedals as he does both literally and figuratively. I learned the method he uses and am most comfortable with it. See Ricky Rudd; th-cam.com/video/7DhtCbSayj0/w-d-xo.html
You will notice different holes so the brake pedal can be positioned differently either for driver preference or tracks like ovals where they spend less time on the brake or are left foot braking the whole time.

[@ArtemLokhovitskiy]

@@simvids1461 thank you a lot for responding!
I've never seen such technique before as the driver has from the video you linked to.
I don't have sim racing rig where I can practice it and my personal car is just an accord with manual transmission, so I always do only heel/toe with my right foot on downshifting. It's actually more like toe/outside-of-the-middle-of-foot as there is very little space between brake and throttle pedal. I also try sometimes to brake with my left foot when I am certain that I won't need to change gears but that's more like for training my brain to be able to use both legs for everything :)

[@simvids1461]

@@ArtemLokhovitskiy I drive my manual Elantra rarely using clutch. I use the clutch to start out and when stopped. Otherwise, I shift clutchless both up and down. I left foot brake most of the time though, I don't brake much. In general city driving, most people over brake. It's their solution for everything. I do blip to downshift to rev match. Mechanics at the dealership are always surprised at how little brake wear and clutch wear my vehicles have. 8)

[@bravoA-su8xm]

@@ArtemLokhovitskiy if you look close he "rides" (half depressed) the clutch under the heavy braking zones its a big heavy stockcar also a V8 with more rotational drag mass so to keep the rear tires from locking he uses the clutch as a anti lock up device.

[@markhondacivic4368]

A Nascar car

[@efrainduarte6295]

I think that it's a v8 supercar because I visualized their sound. Am I wrong?

[@MichaelStrohl]

NASCAR Stock Car

[@BILLUPS811]

definitely the Richard Childress Racing NASCAR stock car...it's a v8 btw.

[@BILLUPS811]

Obviously you cared enough to wrongly state that it's a "v8 supercar" lol if there's anyone who shouldn't comment, it's you.

[@stevierayvaughn8990]

yes. they don t clluch

[@chevyman8329]

He's on the wrong side to be in a v8 super car ;)

[@ryanmurdock2121]

Is this a cup car?

[@BILLUPS811]

yep.

[@deangeloharris2744]

Most likely an Xfinity car

[@josiahisawesome101]

what track is this

[@jeanetdun]

Josiah Ronning I’m guessing Watkins Glen tbh

[@tyleracimovic823]

@@jeanetdun Can't be Watkins Glen. The gears used aren't right for that track.

[@tyleracimovic823]

@@jeanetdun Could be Road America, Carolina Motorsports Park, Road Atlanta, or even maybe Mid Ohio.

[@cameronflores4209]

NASCAR WOOOOOOO

[@abishkdesai]

wow bro thats a 3 pedal automatic!

[@iosifstalin3719]

Se puede pasar los cambios sin el embrague solo que hay que saber hacerlo hay que encontrar la revolucion exacta

[@TeejtheDeej]

the clutch is only needed for starting, stopping and low speed gear shifts. Dog box set up

[@stevierayvaughn8990]

it has secuential gear box

[@SPARKYYT]

It's not a sequential gearbox. It's a Dog Box, which is a H petern shifter 4 gear (use in nascar) or more, and that mean is you can changing gear without putting the clutch and also woried about the transmission and engine matching. Just straight bangshift like you would when pressing in the clutch.
even some sequential transmission need to put the clutch to shift since you don't have the flatshift like old Bikes. Newe bikes do have that technologie now of that flat-shifting and modern racecars.

[@IndyGuest]

Is that a turbo or supercharger I'm hearing? I didn't think NASCARs had those.

[@rossini_racing]

+MasterGuest
NASCAR never uses those.

[@IndyGuest]

That's what I figured

[@oscarzt1652]

straight cut teeth in the gearbox

[@theb855]

its the rear end winding

[@IndyGuest]

Oscar Thorpe Tyler Laing ...is it both? lol

[@bradleyarnoldcrouse]

Riding the clutch

[@Country_boy-sz3bn]

What’s that metal T welded onto the accelerator used for?

[@Thomas-ib9iu]

pretty sure its for if the throttle gets stuck

[@Country_boy-sz3bn]

@@Thomas-ib9iu I got ya

[@Fermotorsport]

[@aksa3227]

so if you don't use your clutch when shifting what the function?

[@MrElpajita]

Well, he use it to downshift, in that type of transmission you don't need the clutch to upshift.

[@walter.s.dempsey]

Dogbox clutch I assume>

[@j.barrylink498]

A jericho trans I'd think

[@rcarkk]

Why racers press gas, brake and clutch at the same time before they enter a corner?

[@Isaac_GMspecialist]

so they can shift down while breaking very smoothly if im now mistaken

[@beloved_lover]

Usually when going into a cornern and switching to a lower gear. Pressing the gas while breaking is just to rev-match the engine RPM to the gearbox so the gear change is smooth and fast.

[@SETH3003]

Robert Torres
They match the drm to eliminate the drag torque.
Imagine driving on snow and shifting down abrupt, your driven wheels will loose grip like if you would brake abrubt.
So in motorsport where you drive and brake on the limit any additional force will lead to lost time or leaving the track.
They have to match the drm so they can still brake on the limit.

[@nathanielmckechnie570]

Ricardo Daniel Costa it also helps with braking and changing down with out tapping the gas will make you braking distance longer compared with tapping the gas you will have a shorter braking distance but the art is not over revving on downshifts which will cause you to lock the rear brakes and spin out as well as wreck then engine and a race engine rebuild is about $80,000+

[@americankid1237]

Racing driver technique Ricardo

[@dieselgate5002]

why he dont ise the clutch?

[@EnterGenericUserName884]

He uses a sequential manual transmission. They allow for clutchless shifting.

[@kingawags]

NASCAR is not sequential, it's got a 4 speed H pattern..

[@GreatWhiteAlex]

He's rev matching

[@americankid1237]

Is this a Gander truck/Xfinity car/Cup car Does anyone know ?

[@simvids1461]

Based on Max's race history I'll guess Truck or Xfinity. Just because of the short acceleration sections, lots of braking and shifting, Sonoma??

[@americankid1237]

@@simvids1461 No not Sonoma

[@vixdibe4546]

it' s........ it's OMG

[@081588101]

what?

[@AS-dc8sq]

Simulated ABS

[@simvids1461]

He IS the ABS and Traction Control! 8)

[@JHallin]

What car is this?

[@americankid1237]

NASCAR

[@optimusprimezombie5591]

Give me sick to see this crap systems, the worst sequential transmission yet. To me you have to use the clutch to increase and decrease but marches. If this is because of the performance! You can have the same performance using the clutch and if because of physical wear .... they are racing drivers, have to endure or go cycling.

[@JetlinerX]

+OptimusPrimeZombie You're right, it is the worst sequential gearbox ever... because its not sequential.

[@Syntax_-_Error]

+OptimusPrimeZombie Do you think sequential gearboxes allow you to just engage the gears no matter what the situation is? lol this is NOT a game. REVS GOT TO BE MATCHED for gears to engage in real life. clutching gives you much more "room" for error when blipping the throttle to MATCH THE REVS. and you gonna NEED that "room" when you want to downshift while on high revs and heavy on the brakes simultaneously.

[@unclaw2012]

DAT REV-MATCH!

[@aksa3227]

so if you don't use your clutch when shifting what the function?

[@WhiskeyOnFire]

The gearbox is made so that lifting of the throttle is enough to take the load of the gears to shift. On down shifts you still use the clutch when heal-toe downshifting

[@TheFunkyPyroMonkey]

Well in the video he's not using the clutch and still rev matching between gears so....

[@MrElpajita]

+PyroMonkey lol, what video did you see? Are you that dumb? He's using the clutch everytime he downshifts.

[@212809]

During the earlier part of the video the driver is upshifting and downshifting without the clutch. You can see him blipping the throttle on downshifts and letting off on upshifts.

[@unclaw2012]

DAT REV-MATCH!

[@aksa3227]

so if you don't use your clutch when shifting what the function?

[@jakebewely6519]

taking off

[@jakebewely6519]

slowing down

[@jakebewely6519]

use clutch in 1st and 2nd usually

[@TheFunkyPyroMonkey]

To get the car moving from a stop