PORSCHE 917 ENGINE ANIMATION
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- Опубликовано: 20 сен 2024
- Animated 3D model of the internal workings of a Porsche 917 engine. Model was created in Solidworks. 180 individual frames, representing 2 full engine revolutions, were then rendered in PhotoView 360. First 180 frames are repeated 3 times to produce 30 seconds of video at 24 FPS. Each frame took approximately 20 minutes to render with a resolution of 1280 X 1024.
Great animation job, to hear the legendary flat 12 of the Porsche 917 at full tilt on the Mulsanne at Le Mans is probably one of the greatest sounds in all of motorsport. It’s right up there with the last of the greatest F1 Ferrari v12 engine sound (412 T2) of the mid-90s.
Amazing animation, dramatically helps in understanding one of the greatest engineering marvels
Even after 12 years...
This video looks good.
Thanks...as an American V8 guy I always wondered what the 917 flat 12 internals were.
whoever did this, earns all my respect
Gorgeous animation. Still impressive in 2022. Actually two flat 6 engines, output at the center via gears which drive a propeller shaft above the crankshaft, back to a conventional transmission.
El l motor de ciclo otto, mas potente del mundo!! porsche!! eres lo máximo!! y agradezco al o los profesionales que hicieron esta fomidable animacion computarizada en 3D!!!!
The fan feeds a shroud that pushes air down over the cylinders.the exhaust valves are at the bottom, and the mass effect blows the hot air out. Vows and Porsches always had a fan and shroud, but usually a squirrel fan on vw.
Masterpiece! Draw and designe of engine.
That is absolutely amazing. Great work. Must have taken ages...
That was some cool engineering. Really just start with 2 flat six air cooled engines and then figure how to get them to work together.
Whew, hypnotic! Excellent animation.
Porsche really took the Boxer Layout to the next level.
Exept it's not a boxer but a 180 degree V engine.
Beautiful job - rendered as well! It must have taken you days just to do the renoered animation - and a hell of a computer!
That's hypnotic, I could feel my heart slow down when I watched this video.
I was trying to figure out how to loop this video player so I could get some
long-term therapy :) Thank you mwp917
click your right mouse button; for LUS
Amazing work... Thanks for posting it up!
Regards - Randy
Canepamotorsport did a rebuild on one of these recently. What a complicated engine.
Very impressive animation for a very impressive and badass engine. I like it.
Absolutely fantastic vid! Flat12 air-cooled engine rules!
Wow great video! Good work.
@DoriFord On second glance, that is likely a 908 crankshaft. That had 9 main bearings, and opposing cylinders were on different crank throws, like on the flat-6 engines. Once Porsche went to the 12-cylinder layout, opposing cylinders shared throws, like in a V-configuration engine. (Hence, some call them 180-degree V-12s, not "flat" or "boxer" engines.) It makes the engine shorter, which matters when you have that much engine.
Wo ... 2 Valve , Aircooled Engine .. and its soo Powerfull... and the sound !!! *_*
Great video - lovely work!
even the turbocharged 917/30 with 1500hp in qualifying tune was air cooled.
+MrJohanVegas _"On second glance, that is likely a 908 crankshaft."_
Not quite but you're very close. The 917 motor (more properly known as the 912) was cobbled up from 908 components. The original 4.5 litre model reflected this in its dimensions, having 50% more cylinders and consequently 50% more capacity - 908 was 3 litres and 8 cylinders; 912 was 4.5 litres and 12 cylinders. It also shared some of the valve actuation gear. Putting the power take off in the middle of the crankshaft was a master stroke. Because the engine was just a series of bolted on, air-cooled cylinders, it has less rigidity. A central PTO was the best option and it worked very well.
_"That had 9 main bearings, and opposing cylinders were on different crank throws, like on the flat-6 engines. Once Porsche went to the 12-cylinder layout, opposing cylinders shared throws, like in a V-configuration engine. (Hence, some call them 180-degree V-12s, not "flat" or "boxer" engines.)."_
The pistons in the 912 engine shared common crank throws so it was not a "boxer" engine.
_”It makes the engine shorter, which matters when you have that much engine."_
It was still a very long engine and the centre of gravity would have been higher due to the central PTO because the prop shaft ran underneath it to the gearbox. The length was its Achilles' heel and the reason why some of the power figures claimed for it should be regarded with suspicion.
@LollerStormeR
Yes, it is an aircooled engine, like 1998 and earlier 911s, the 356, 914, etc
Wow, I know nothing about engines but this nice !!!
Pretty cool
this is so cool :D...please make another
thanks buddy
Curious, it's like a turbo engine, but without the turbo lag
Awesome!
@DoriFord That would appear to have the wrong number of crank journals for a flat-12 engine. It has 9 main bearings and 8 offset sections (throws), which suggests either 8 or 16 cylinders. Judging by the location of the oil holes on the bearing surfaces, and their relative width to the mains, I surmise it is for an 8-cylinder engine. Also, looking at the throws, it is phased as two four-cylinder sets offset by 90 degrees. Cool pic, though.
Very good job !
I saw that 16 cyl engine at the Porsche Museum in '99-
As far as I remember it was a twin plug engine, normally aspirated. I was counting the cylinders and plugs when i was finally approached by someone who worked there, we both laughed at how crazy it was. They opted to stick to the 12 cyl(laughs)
The auxilliary drive shaft driven by a gear located in the center by the crankshaft is properly shown but the main engine output is via a separate drive shaft similarly driven but located below the crank. That arrangement allowed the flywheel/ clutch to be about three inches closer to the ground and I'd like to know if it was overdriven, underdriven or geared at the same output speed of the crankshaft.
Old post but still amazing
@malaka1212
Yes, Porsche tryed out many
modifikations. One of these was to suck air instade to blow air in
order to get more downforce. Didn't work. They tryed to modify the
inlets. Good job but the air resistance killed the high speed.
@techklec
are you are going to
rebuilt a gearbox?
That's what I was thinking. The absence of a Venturi or sliding skirts on the underside must have eliminated any possible downforce gains. They could have also used some sort of NACA duct each side to funnel cool air past the heads if needed.
wonderful, but i dont understan one thing, why is it a DOHC? it has only 2 valvles per cylinder.
this is super cool. you shud do the BRM w16 to :)
.....ups! the distributor arm turns wrong. Anyway - great work!
@diegogpb
because of the valve angles I'm guessing, 911 aircooled engines have SOHC with rockers but the valves look shorter on the 911 engines than the 917 engine (haven't seen a dismantled 917 engine in person, though)
Fabulous! Fantasticl 4 stars! Two thumbs way up! :-)
Do more of this! More damn you, MORE!
Nice!
The resources that went into designing an engine only to be used in a racing car is staggering. Few car companies would ever do that..
1 person was a Ferrari engineer trying to beat the 917
Hello, i m searching any drawings about this engine, can you help me ?
I wood machining a replica of this engine..
thanks for your answer !
What is the fan on top for? Were these air cooled and relied on that fan? I know he loved his air cooled engines but I figured they wouldnt be practical at that power level. Interesting.
Hello, do you have this 3d model to sale? I'm building a Fujimi 1/24 scale that cames without motor detail. I want to 3d print, if you could sale this model it was amazing! Amazing job btw!
@diegogpb and jsquared1013,
The twin overhead cams allow higher RPM without valve float, all toehr technology levels being equal. The rocker arms in a SOHC design add mass to the valve train that must be accelerated by the cam and decelerated by the valve springs. In general, SOHC is superior to pushrods for increased RPM, but still bows to DOHC, even with only two valves per cylinder.
-markb
I hope you read this, but I'm looking into building a 917 kit car and also rebuilding a replica flat 12 engine for use in it. I was curious if there was a way I could have the file or if you would be willing to sell it.
Only thing I don't understand: In the animation (very nice btw), the fan is rotating in such a way that it is forcing outside air down into the motor. Is this how it cools? I always that that it would be the opposite. Like the fan on a computer CPU (and other things), it blows the heat up and away from the heat source - in this case the engine. Shouldn't it extract the heat by blowing it away from the engine, rather than forcing air into it? I could be totally wrong I'm just confused.
Most aircooled cars have cold cooling air forced into them, rather than having warm air sucked out. In fact i can't think of any that has warm air sucked out..
'air cooled'
air cooled sorry, English is not my native language..
@MrJohannVegas well, I've found it on the website of some dutch company which manufactures billet crankshafts, so I think that it is a copy of an actual 908. Right, not 917, my bad.
For example, the Mercedes W196 had a similar type output shaft arrangement which was overdriven at .89 engine speed.
Never to be seen or heard "I get chills down my spine" again but at 1/2 mile per gallon at full chat it can only be a toy. But q very very serious toy. The only time you will see one is when you get passed
May I purchase the 3d model from you?
Is this a diesel?
Hmm so it looks like two flat-6 bolted together, cam gearing in the middle
Hi, it would be possible to buy your 3D ? Thanks for your answer ;)
What is the purpose of the fan above the engine? Is it there to cool it?
How did you animate the images?
which is the software you used?
same here!
Wow
Dear mwp917, is it possible to use this great animation in a 917 documentary?
ooops....typo..." all other technology levels being equal "
-markb
WHY IS THERE SO MANY GEARS INSIDE??!!?!!?
keren banget, cuma pake pendingin udara kayak vw kodok ane
Hi, are you willing to sell your Solidworks project?
Hi Klaus, I am not planning to sell the solidworks models used for this animation.
Internal combustion..NEVER die.
Hello! I am deseperatly trying to find the cad of this engine. If you're ok to give/sell it let me know! Regards from switzerland
whats the top fan do?
cooling engine
flat 12 air cooled 4 gear transmission and a liquid filled frame Porche nine one seven***
i want the fan off one of those engines to hang on my wall
awesome work! congratulations! I used the same techique, in my pedal spinning animation, I rendered 180 frames in photoview moving the cage 2 degrees every time... and it's just hell boring, after that I mounted the frames in premiere cs5 ! In sw 2011 they integrated photoview in it and I hope you can render animations too! Check my chanel! :D
:megusta:
@mwp917 I have a pic of an actual Porsche 917 crank and to my surprise, it wasn't flat as I expected.
i39.tinypic dot com/v6rrmf.jpg
awesome work! congratulations! I used the same techique, in my pedal spinning animation, I rendered 180 frames in photoview moving the cage 2 degrees every time... and it's just hell boring, after that I mounted them in premiere cs5 ! In sw 2011 they integrated photoview in it and I hope you can render animations too! Check my chanel! :D