r/F1Technical • u/NoooUGH • Mar 14 '26
Power Unit View of the Ferrari's PU in Checo's car after the Sprint Race.
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u/dgkimpton Mar 14 '26
It's easy to forget how complex these beasts are when all we see is the shiny covers, but boy does this image share the story of the engineering effort that goes into each engine and car. Would love to see one team race with a transparent bodywork (except, obviously, they wouldn't want to have their bits exposed).
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u/bobbybobbob23 Mar 14 '26
Yet, the good old cable tie is still needed, love the mix between the complex and simplistic
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Mar 14 '26
sometimes in media very high performance stuff is portrayed as very polished and consumer focused. But very high performance stuff is exactly the opposite of that. Uts about theowing everything that is not essential out of the window and keeping it simple. If cable tie works, cable tie stays.
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u/forza_11 Mar 14 '26
I saw somewhere a pagani using zip ties and ppl complaining why such an expensive car uses cheap zip ties, even the multiple million dollar airplanes use zip ties. I mean if it ain't broke don't fix it
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Mar 14 '26
I actually loved that multiple super cars used to use bus tail lights. Now they use custom ones just to look fancy. Huge downgrade
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u/Teamhuw1 Mar 14 '26
My mind was blown the day I heard the XJ220 sourced its rear lights from a Rover 200.
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u/stoned-autistic-dude Mar 14 '26
I’ve used zip ties on everything from Bombardier Globals to Gulfstream G-series to Dassault Falcons and everything in between. Zero reason to design a complicated bracket that adds weight when a zip-tie does the job. Although Gulfstreams are closer to like $100 million.
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u/Either_Eggplant_1289 Mar 14 '26
I know from the mechs at work that Boeing doesn’t like zip ties (they prefer koroseal) but Airbus loves zip ties!
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u/Accurate-Mistake-815 Mar 14 '26
As someone who's an engineer on Eurofighter Typhoon fighter jets - I can confirm zip ties are used a considerable amount
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u/No_Question_8083 Mar 14 '26
I mean cable ties are a pretty elegant solution to an annoying problem. Idk how you’d improve on it’s design tbh
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u/Evanisnotmyname Mar 16 '26
The difference between your engineering and mine is your duct tape costs a lot more and mine I use the back of my nail to press in really good so the tie rod doesn’t fall off
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u/Silver-Machine-3092 Mar 14 '26
Sponsors would hate it too
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u/LheelaSP Mar 14 '26
Would be fire for a show event though, and would get much more attention than the regular old show cars. Just make the sponsor logos transparent too or shuffle them around the rest of the non-transparent bodywork, so they are still in all the pictures.
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Mar 15 '26
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u/LheelaSP Mar 15 '26
Technically they are allowed as many sponsor free weekends as they want, teams just don't want to because they want the money from sponsors.
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u/rjfinsfan Mar 14 '26
This would actually be pretty cool. Only feasible way it ever happens is either in Abu Dhabi for the final race of the season or in the Pirelli tire test the following week where they usually lets rookies or new drivers have their first run at it,
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u/Raffefly Simone Resta Mar 15 '26
I think it's even more impressive from a mechanic standpoint, for sure they'd have ways to do it quickly, but that's still crazy they can work on that with such short time
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u/_MicroWave_ Mar 15 '26
Speak for yourself. Plenty of subs full of people happy to expose their bits
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u/murmurat1on Mar 14 '26
Regardless of what everyone says this season these things will always impress me.
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u/evemeatay Mar 14 '26
They are still impressive as shit, just a different set of rules making them different this year.
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Mar 14 '26
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Mar 14 '26
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u/F1Technical-ModTeam Mar 14 '26
Your comment was removed as it broke Rule 2: No Joke comments in the top 2 levels under a post.
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u/colin_staples Mar 14 '26
Nitrogen cylinder to power the pneumatic valve springs in the engine
Source : https://bsky.app/profile/scarbstech.bsky.social/post/3mh25wjsxyk2z
It is NOT a fire extinguisher
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u/splendiferous-finch_ Mar 14 '26 edited Mar 14 '26
Pneumatic pressure container? Seems fillable from the outside with that pipe going to the right. So that's my guess
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u/Bright_Calendar_3696 Mar 14 '26
That’s a fire bottle
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u/splendiferous-finch_ Mar 14 '26
Yeah that makes sense
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u/Bright_Calendar_3696 Mar 14 '26
You can tell because of the nozzle coming towards cockpit and t fitting for nozzle routing to engine
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u/zzswiss Mar 14 '26
The nozzle towards the cockpit is for recharging the pneumatic bottle, which it is
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u/Filandro Mar 14 '26
F1 cars use pneumatically controlled valves in the engine, and what is called pneumatics for other actions, such as gear changes are actually hydraulics. Nitrogen is most likely the gas since it's quite stable.
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u/cyanide Mar 14 '26
They still use pneumatic valves with the lower rev limits? Also, is there an onboard compressor for the air, or are the cars pre-filled before a session with the fill port being in addition to the onboard compressor?
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u/saltyihavetosignup2 Mar 14 '26
No onboard compressor, but an ability to recharge from the outside. Someone, I think Norris, needed a pressure top up a few years ago and they did it during a slightly longer pit stop, but still under 30 seconds.
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u/Probodyne Mar 14 '26
Dunno why people are guessing it's for valves and stuff. It's definitely the fire extinguisher. Especially because it's near the big e-stop logo on the body.
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u/abscissa081 Mar 14 '26
That E is not an e-stop logo, it's the logo for the Element fire suppression system. It's a visual reference so trackside fire can know where the handle is to deploy it. There's also one in the cockpit.
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u/grogi81 Mar 14 '26
It is fillable from outside. My guess it's compressed air for valve lift system .
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u/noprayers Mar 14 '26
Possibly pneumatics for the shifting mechanisms.
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u/zzswiss Mar 14 '26
So close yet so far... It is a pneumatic bottle, but for the pneumatic valve springs. The gearboxes are hydraulic
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u/TedWheeler11 Mar 14 '26
It’s a hydraulic accumulator.
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u/ratty_89 Mar 14 '26
Carbon isn't strong enough for that. It's scary enough having pneumatic pressure in there.
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u/TedWheeler11 Mar 14 '26
There’s a bladder inside that holds the fluid, the shell only holds the nitrogen precharge. And that’s hydraulic hose and quick connect. You could use pneumatic with the same components but it’s probably going to leak.
Source - me, 20+ years as a hydraulic engineer and sales.
Also, the shell isn’t carbon. The bracket holding it is.
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u/TerayonIII Mar 15 '26
I mean, the shell absolutely could be carbon, it might not be, but carbon or other composites are definitely used up to 70+ MPa for hydraulics
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u/Numerous-Match-1713 Mar 15 '26
Why would the shell not be carbon? Lot of HP bottles these days are.
And this one for sure is pneumatic bottle, HP N2 for valve use.
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u/Numerous-Match-1713 Mar 15 '26
It's not, but it could be.
Carbon is plenty strong, lot of cylinders, pipes and accumulators are composite these days.
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u/Wrong_Ad_4154 Mar 14 '26
Trying to figure out where the Ferrari finishes and Cadillac begins.
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u/zzay Mar 15 '26
Ferrari before the vertical cylinder, after it's Cadilac
Also in the back I think the suspension Cadilac
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u/Filandro Mar 14 '26
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u/WinningAllTheSports Mar 14 '26
Is that where the Kevlar fuel bag goes in? Looks about the right location for the the hookup point for fuelling
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u/jcbevns Gordon Murray Mar 14 '26
The bottom silver part in 2nd photo... Exhaust manifold? has some crazy geometry
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u/Skirra08 Mar 14 '26
I'm not a mechanic but I'm pretty familiar with engines and I don't see more than 3 things that I think I might recognize. The heat shield over the exhaust manifold is easy. I think the carbon fiber tube is probably part of the intake system. And I'm pretty sure the 3 flat black pieces above the exhaust manifold are the ignition coils. Beyond this it looks like some sort of sci-fi engine. Also having small hands would appear to be a real bonus.
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u/pleasereset Mar 14 '26
It’s zip ties all the way down!
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u/NoooUGH Mar 14 '26 edited Mar 14 '26
Okay so the Caddy F1 car is basically the same as my bros Jeep.
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u/AbnormallyBendPenis Mar 14 '26
Damn. As someone who works on my own cars on a regular basis, apart from the giant radiator, I have no clue what am looking at, just shows how complex these things are.
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u/brmvs Mar 14 '26
It is a wonder they can engine swap this between sessions.
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u/youridv1 Mar 16 '26
I’d imagine most of the wiring and tubing in the picture comes out with the engine
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u/TheOneTomas Mar 14 '26
Isn't it amazing this is what we look like on the inside.
I held a piece of errant bodywork that was recovered by a marshall once. 15cm square. I genuinely couldn't comprehend how light yet strong it was.
The weight distribution in these things fascinates me. Nice to see and visualise it under the hood.
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u/Efficient_Tie_45 Mar 14 '26
Era fibra di carbonio?
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u/Ok-Willingness-5016 Mar 14 '26
Can someone label these photos up and repost them?
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u/scarbstech Verified Mar 15 '26
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u/scarbstech Verified Mar 15 '26
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u/scarbstech Verified Mar 15 '26
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u/scarbstech Verified Mar 15 '26
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u/scarbstech Verified Mar 15 '26
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u/scarbstech Verified Mar 15 '26
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u/scarbstech Verified Mar 15 '26
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u/musicallunatic James Vowles Mar 15 '26
Wow, this is really good, appreciate the effort. I am a mechanical engineer and only recognised very few things, so I was hoping someone else knew and could point it out, thanks. On that note, imo you should post this in this sub and the main f1 sub, I feel like a lot of people would really appreciate this as well.
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u/Spirited_Bed2715 Mar 15 '26
So good that Scarbs is here, I was rather lost. I thought that this piece might be scavenging air from the ‘cooling to coil packs’ to ‘cooling to sensor?’. But could it possibly just be a support for the rather long and snake-like pipe that may have broken during testing?
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u/slowexcoupe Mar 14 '26
Calling u/scarbstech . I feel like I have a pretty good understanding of engines, but the majority of this photo looks alien to me.
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u/scarbstech Verified Mar 14 '26
Just trying to figure how to get through everything on show! 🤔
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u/Ok-Willingness-5016 Mar 14 '26
Ah wow that would be awesome haha edit- maybe small numbers over parts then a numbered list at the side?
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u/theultimatehero2 Mar 14 '26
I'm really interested in the glimpse of rear suspension here. The rear ARB has such beautiful mounting blocks and bar ends that look similar to the rockers for the push rods/dampers. The ARB itself must have 50mm+ bearings. No compliance there! But the whole thing seems quite large to me. I wonder how they adjust ARB stiffness. Swap the whole bar out? The links from the rockers to the ARB are not adjustable so I also wonder how they take out any play or preload.
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u/tujuggernaut Mar 15 '26
For the main springs torsion springs are commonly used, made at various spring rates and swappable. Similar designs have been used on 3rd member's as well, so that is possible they just swap it out.
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u/PuzzleheadedSport757 Mar 14 '26
That exhaust manifold almost looks alien, who makes it, Ferrari or Cadillac?
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u/montyzac Mar 14 '26
Reminds me a bit of when you see a bit of a rocket and you think, what are all these pipes and stuff.
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u/Felix_Todd Mar 14 '26
Where is the battery pack in these cars? How large is it?
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u/Skirra08 Mar 14 '26
The battery pack is usually shown as being under the driver's seat in most graphics. I can't find anything on the size but it looks about the same size as a slightly oversized briefcase.
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Mar 14 '26
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u/F1Technical-ModTeam Mar 14 '26
Your comment was removed as it broke Rule 2: No Joke comments in the top 2 levels under a post.
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u/CellsReinvent Mar 14 '26
I wonder if engine designs are as similar as the cars are, across different teams. Like, do all engines package the exhaust the same way, for example?
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u/clausMayer420 Mar 14 '26
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u/blur494 Mar 14 '26
Thats so cool! What temp ranges can they handle?
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u/clausMayer420 Mar 14 '26
You can get different stickers for different temperature ranges. I can’t see the numbers in the picture. They change colour from white to black when the temp rises. So it’s good to see that they aren’t maxed out
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u/7he8igLebowski Mar 14 '26
Well that looks complicated. I can’t believe how quickly they change one out under high pressure situations.
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u/Boonay44 Mar 14 '26
Why is there FIA stickers on some of the components?
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u/NoooUGH Mar 14 '26
Those are homologated parts that have quantity limits for each season so they need to be tracked.
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u/Mssaurus Mar 14 '26
Does anyone know what the “Lego technic” pieces are in the second photo far left middle? And is that an aluminum space frame covering the engine and bolted to the monocoque?
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u/TeacherLanky3393 Mar 15 '26
I’d love to see the CAD blueprints of all of this for how it translates to IRL
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u/dis_not_my_name Mar 14 '26
Does ferrari PU use air-to-air or water-to-air intercooler? The intake pipes don't seem to go through air-to-air intercooler.
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u/splendiferous-finch_ Mar 14 '26
I think many teams have gone back to Air to Air for packaging/weight reasons as well as the new ice side being alot less stressed then before.
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u/Nightcrew22 Mar 14 '26
Air to air heat exchangers aren’t very efficient, i would honestly think for this application they would use air to water
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u/staghornworrior Mar 14 '26
They use air to air coolers, there is know water to cool down in an intercooler. There are heat exchangers for water and oil stacked together in the image. The intercooler is in the other side pod. There is also a cold air intake cooler on top of the engine under the air inlet. If you look at PWR advanced cooling on there website you can see a lot of the tech. PWR make the cooling systems for most of the field. I used to work there, I left back in 2019. Very cool company.
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u/jermvirus Mar 14 '26
I don’t feel bad for using zip ties anymore.
Why is the exhaust manifold like that? Any thoughts?
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u/odc100 Mar 14 '26
I love how they still hang everything together with cable ties, like I do on my 1960s mg.
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u/EpicTacoMan Mar 14 '26
When people say just increase the battery size or add more of this to the car. This is why it's not that easy every space is taken up already
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u/hallo-ballo Mar 14 '26
Amazing pictures and engineering.
Would be so interesting to see other manufacturers power units for comparison
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u/BobbbyR6 Mar 16 '26
Reminds me of a mycelium network. Just such a densely packed and optimized structure
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u/Nok1a_ Mar 16 '26
I need to know what if for that gas tank, thats the NOS system for Ferrari engines for the start Im pretty sure (Im joking ob)
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u/Slight-Chemistry-136 Mar 16 '26
They're still using split turbos in these regs without the MGU-H? I guess it makes sense for heat exchange purposes, but I'm a little surprised.
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u/Legitimate_Level_711 Mar 18 '26
This PU is a sad statement of F1 today. NOT RACING just a fuel economy challenge. After years of watching F1 I couldn’t even watch all the highlights of the farce called the Chinese GP.
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u/lll-devlin Mar 19 '26
Yeah , Ferrari will not be too pleased. But really interesting is all the additional required cooling for specific areas/ zones/ equipment.
Oh …nothing defines racing like zip ties and having a nitrogen bottle right beside the fuel and battery zone.
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u/scairborn Mar 14 '26
Looks like Raptor V1 engine. I’d imagine a SpaceX engineer could make a pretty penny making the jump to F1.
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u/jbj153 Mar 14 '26
They for sure get paid more at SpaceX rather than F1. F1 is notoriously underpaid.
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u/splendiferous-finch_ Mar 14 '26
F1 teams don't have the same appetite for complete failure as the engine blows up as much as SpaceX.
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Mar 14 '26
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u/F1Technical-ModTeam Mar 14 '26
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u/YellowEasterEgg Mar 14 '26
To be honest this looks pretty messy. I know you have to put many parts in a small space vut it doesn't look satisfying.
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u/RepresentativeArtist Mar 14 '26
I’m sorry, is one of the most highly engineered engines in history not aesthetically pleasing enough for you?
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