Interesting thing to think about

[betarace]

rac_wv;229177 wrote: I remember a while back an issue with F1. It was way over my head. Something along the lines of RPMs getting so high that the valves started becoming an issue. I think they got the pistons moving so fast that the valves didn't have enough time to close and were essentially locking open. I don't know if this was ever overcome, regulated out, or became a limitation.

2 solutions have emerged in MGP - pneumatic valves (rather than cam/springs) and desmodromic valves (ala ducati) that are both opened and closed via cam

 

[HokieRider]

the whole Desmo design that Ducati has its incredible in my opinion. it gives complete control to the design engineers, EX: if you want the valve to close slightly slower to avoid breaking you can design that in... etc

its a very cool design

ive always been curious about making certain components out of composite material. could you imagine how light the rotating mass would be you make the connecting rods out of carbon fiber!

i be the heat and oil would get to them though

 

[dlockhart5x]

Mercedes was the originator of desmodromic valve actuation as we know it. It was used in the W196 F1 car in 1954. There were earlier "desmo" systems that used a second cam to actuate the closing cycle. The MB system is the one Ducati mimics most closely.
mb warmup
http://youtu.be/2AH9f_Sy-cs
.

 

[betarace]

all of this leads us to the Turbo Encabulator which is the only real innovation from the past 40 years
http://www.youtube.com/watch?v=rLDgQg6bq7o

 

[betarace]

mmmmmm prefamulated amulite...

 

[adotjdot]

betarace;229212 wrote: all of this leads us to the Turbo Encabulator which is the only real innovation from the past 40 years
http://www.youtube.com/watch?v=rLDgQg6bq7o

:haha:

Nice! I was wondering if someone was going to mention this. One of history's greatest inventions!

 

[Ruhe52]

http://www.youtube.com/watch?v=gZEdDMQZaCU

 

[HokieRider]

That video just made my day.

reminds me of when i was in college selling auto parts...we used to call the other stores and ask for the most ridiculous fake parts just to screw with people.

I'll never forget the day i convinced the guy that he needed halogen fluid for his headlights and that it was $50 a gallon

 

[betarace]

Ruhe52;229224 wrote: http://www.youtube.com/watch?v=gZEdDMQZaCU

 

[HokieRider]

http://www.youtube.com/watch?NR=1&feature=endscreen&v=nsa6kq-qqIE

Heres an interesting video that goes along with what we are talking about....its cool to see (or not be able to see) the engine internals moving that fast

 

[Jiggy]

Where in the hell is Morgan Freeman- Through the Wormhole when you need him?

 

[rac_wv]

Thanks for the info. I took a quick look and it appears Renault has dabbled into getting rid of the cams and trying to get electronics to handle the pneumatic valves.

 

[Joe Vital]

would this mean the slug of burnt/unburnt fuel would then be exhausting AHEAD of the sound wave caused by the combustion thereof?

 

[Meat]

Joe Vital;229305 wrote: would this mean the slug of burnt/unburnt fuel would then be exhausting AHEAD of the sound wave caused by the combustion thereof?

It wouldn't seem like it since the combustion happens in a motor that is probably traveling slower than the speed of sound. The piston and/or valves would be sonic but I am not sure if that would affect the actual sound..... This is a great, thought-provoking question.. This is going to make me think.