@Brian Garvey THANK YOU for this! As a life long gear head, retired aircraft mech, and many year F1 fan, these videos of yours are the equivalent of finding a treasure! The F1 world is so secretive very few ever get to see this stuff and to me your videos and posts on F1 Technical are an absolute goldmine!!!

Thank you so very much for sharing. I have been so very interested in these topics for decades. I have only been exposed to text with no hands on, no images. Revealing this wonderful world brings me such joy.

I’m surprised that those little finger followers can handle the pressure and rpms without failure. Awesome video thanks for taking the time to explain the valve train.

Utterly fascinating. I'm glad that you popped-up on The Engine Pron page. I'd have never found this, otherwise.

I heard of air valve springs many years ago and always wondered if these were real or fiction. Thank you for showing us this as air springs seem to be real.

Thanks, I’ve wondered for years how that works brilliant thanks.

Thank you so much for sharing these F1 parts. Just love to the engineering that is capable when money is not a question. Love this, Keep it up!!!!!!

Thank you for taking the time to share your knowledge these vids don’t make themselves and your knowledge isn’t given to you. ❤

I am so fuckin excited that you have a youtube channel, your F1technical posts are so damn good I had to do a search to see if you had any other sources 👍

Thanks very much for this...I've always wanted to see the inner workings of F1 engines. Another example of a relatively simple concept that is incredibly difficult to execute.

Are you planning a video on the intake and exhaust ports. They look very different to anything I have seen on a production engine. Subscribed!

Brian, Thanks very much, I have watched F1 for many years and have always wondered what theses engines worked and looked like inside.

Stunning. State of the Art in one term. Thanks for video🙏!

Way kill' work you do sharing this stuff with us, Brian. TY very much! :D

Great work. 🔨🔧🔩 Thanks so much for sharing. 😎👌🏼

Intake and exhaust spring open pressures combined with volume of valve cylinder would be valuable info? Inlet air pressure would be a guarded secret. My guess is all four variables change in ratio with lift and duration of cam. Lots of expensive dyno hours!!!

I have a 2.4 V8 camshaft (CA something on it), hollow and DLC coated, very impressive piece!

By the way, the operating pressure of the AVS was only 1.6 bar.

I only flicked through this, but dont think you mentioned re-entrant cam forms that went hand in hand with this... Students might love it😅

Thanks for the Video. Great job

Sounds Awesome!

Thank you.

Very good explanation. Thanks for sharing

Awesome, thanks

Just wow! Open wondering how this works ever since I heard of it. I was fascinated by the fact that these entries could reveal to 20000 RPM and some of the things that took To Do that.someone. Else was talking about this but they're explanation didn't really do it for me.now I get to see when start to see how it's made. Internally still curious how it actually goes up-and-down and to imagine the pressures involved. Thank you for sharing.

nice work , thanks

You can’t really grind an alloy surface in the same way you can steel so hence the liner inside the bore. I would suggest thermal considerations and the risk of galling at high revs would be other pertinent reasons for a steel liner.

God bless you for doing this video!

fab vid brian brill

That's a fascinating video and one of the few engine parts I knew nothing about. Amazing how simple the check valves are even though there are a lot of pieces inside each one. Could the pressures be 'fine tuned' with the assembly screw? Some beautiful machining a lot of it I wouldn't like to do, way too sketchy on manual machines (I trained as a precision machinist/turner, 0.003 micron) Are 'compound valve angles' the same or similar to radial valve engines where valve heads are kinda parallel to piston crown? (Honda RFVC, 1980's) Are they titanium valves? 4.3mm is a real thin neck, particularly with a 40mm head! I guess the actual stem is about 5.5mm? Lightened lobes on cam is interesting feature, thanks for cutting it up to show and tell. Thanks for telling me to log on to F1 Technical, never heard of that site before

Very interesting. Subscribed

this channel looks awesome

I have serious plans to make something like this for small block Chevy and LS1 engines.

Very rare stuff !

Is the oil that is removed thru the oil relief valve there as a result of a metered oil mix on the air supply or residual oil past the seals. If it is past the seals, I would assume it is happening when the engine is not running as I would think the positive pressure in the air chamber would keep oil always pushed out past the seals. thanks for the video. I'm an old American v8 guy but all IC engines to me are mechanical works of art with all the engineering, design, compromises and technology limitations that go into what looks relatively simply from the outside.

That’s some job and fair play buying your own F1 engine man that’s class. Do you have any interest in MotoGP engineering? There’s a debate about whey the inline 4 has reached the end of its lifespan and success will be dependent on having a v4 and I would be interested to hear your thoughts. Best of luck from a Louth man living in Down and I hope you post more videos like this because there’s a lot of engine videos on KZfaq but stuff like this is a rare as hens teeth

Presumably the valve isn’t sodium filled and it is retained via collets. 7075 grade ali is typically a grade used in aerospace and motorsport.

Bonjour , c'est a Jean-pierrs Boudy que l'on doit le rappelle de soupape pneumatique . il a travailliez sur cette technique à la fin des année 70 et Renault Sport à demandé le brevet en 1982 .

,,, there outta be a break-a-way series for n.a. engines only, 21 thou rev limit . Actually the whole deal ( F. One ) might have to go nostalgia regardless . Might as well have the sights and the sounds .

I knew about it but I have never seen It excellent piece of information just saying

Cool

Ive always been a supporter of open source....You know driving evolution and all.

Student tinkerer trying to build a pneumatic cylinder head, this thing is something else. Modern designs have ditched the cams which is insane

🏆🏆🏆👍🇺🇲🙏 Thank you for sharing

thanks for explain, have you done a video about the pneumatic circuit? do you know how much pressure at the reservoir and how much pressure should be at the circuit to the valve chambers?, thank you!

Wow! This is amazing. Do you know what system is used to provide the air for this. Is the pressure constant threw out the valve cycle, or is there any valving built into the regulator?

Could you explain the ridge on the valve for turbulence? What does it accomplish? Just better atomization? Thanks!

I would really like for you to look into the rod and main bearings on F1 cars. They are not traditional. I would like to see how the oil and all the materials they use. I have seen an illustration and it looks like they have used cylindrical roller bearings. Nice video. I just found your channel.

Just compounding the restriction. The valve itself is the limiting factor.

IM IN THE VW WORLD MYSELF ENNY INFO ON THE 8V HEADS FOR USE WITH A 2.0L BLOCK WILL BE GRATELY APRESIATETD

There is no actual reason why, at this point, naturally aspirated F1 engine details should remain secret. No sanctioned motorsport will ever return to a naturally aspirated formula. Ego is a helluva drug...

I’d be interested to know the weight of that valve is and if it was made from anything special? Would it have been a good choice for Beryllium? What would a hollow F1 camshaft weigh? Never seen any of this kind of F1 engine info before!

great explaining, but I want to ask about it, is inside the pneumatic chamber has an oil? or just pressurized nitrogen only? thanks

I was in Jordan GP in 1994 at a test the 194 had a HART 1035. What year, car and engine, did your HART pneumatic valves come from, please?

I think cosworth air springs were the only cosworth part I was specifically told not to talk about.😮

I am still unsure as to how the valve stem and guild get oil lubrication...

Hi, in the early 90`s Cosworth were developing a 3.5 litre V12 F1 engine called the VB. I have access to a crankshaft from this engine, would this be something of interest to you?

Pneumatic actuated valves have been around for quite some time in various iterations. They have defo been around on racing motorcycles so it’s hardly what you call cutting edge.

On those engine is there alternator and water pump that can rev to those rpm?

Love your English accent.

Why do F1 engines not use desmodromic valves where cams push the valves open and pull them shut? Then there’s hydraulic valve actuation that controls valve timing and lift. Fiat put it into their MulitiAir engines.

Is there a pump on the car to keep these up to the required pressure?

Any speculation on N pressure inside the chamber? Your tech post discusses the over pressure bleed valve, but what ensures there's enough pressure so valve float isn't an issue. Also you mention the running position of the finger follower on the lash cap is asymmetric, but no one says why. I'm assuming its to induce valve rotation, but just want to verify...

Can you make a pneumatic 16v head?

Great video! Question how does the pneumatic piston 'grip' the valve stem ?

Ses un ingénieur de Peugeot sport qui a mis au point le principe du rappel pneumatique des soupapes M’ jean Pierre Boudy je crois

Renault V10 era pneumática as válvulas

Do you know how much Co2 or Nitrogen that system would use in a race?

Man ever thought about get that pneumatic valve 3D scanned and CAD assembled ? I'll pay for the service 🙏🏻😇

This is like looking up Yasmine Bleeth’s skirt !

O yes... the first ones didn't have the liner.

Not bad! Valve springs are seriously outdated technology and a serious future maintenance liability and money pit. Imagine $4k to replace the BMW V10 engine's valves springs? ...or worse on those exotic car makes.

Cool video. Thanks for putting it together. There's you and like one other guy on YT that gives us a glimpse into this type of F1 technology