This is quite interesting, I wonder how they did it?
For those of you without broadband it is a slow motion video of a piston cycle. Nothing we didn't know, but interesting to see.
If anyone else knows of similar videos, please post them.
Freakin' hippy
This is quite interesting, I wonder how they did it?
For those of you without broadband it is a slow motion video of a piston cycle. Nothing we didn't know, but interesting to see.
If anyone else knows of similar videos, please post them.
Determined to kill my bike before it kills me
Pasta farts
Thats pretty darn cool.
Hardcore Biker
Dumb ass question time?
Why does one side open then the other in alternate?
Forum whore
So that both are not openning at the same time?
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It's OK...I've got a spare!
One side let's the fuel in, the other side lets the exhaust out.Originally Posted by TLMAN
...she took the KT, and left me the Buell to ride....(Blues Brothers)
parting of the sensory
Actually, in the real world they ARE both open at times - it's called valve overlap, and is used to get maximum cylinder filling. The exhaust gases going out helps pull the intake charge in.
... and that's what I think.
Or summat.
Or maybe not...
Dunno really....
Freakin' hippy
What does this lead you to believe about the video? Old-school engine?
Determined to kill my bike before it kills me
It's OK...I've got a spare!
Maybe a demo only.
Just to show the principle of four stroke engines.
...she took the KT, and left me the Buell to ride....(Blues Brothers)
Hardcore Biker
I like these illustrations from wikipedia.
http://en.wikipedia.org/wiki/Two-stroke_engine
http://en.wikipedia.org/wiki/Four-stroke_cycle
.
another question, the intake valve looks like it opens a little just before the spark, whats going on there?
edit: nope, it doesn't, just some vapour.
One, two free, floor!
The video is edited as you don't see the exhaust valve close (it goes from a fully open position to instantly shut). Slightly before, or slightly after - depending on the set up- the time of exhaust valve closure you would see the inlet valve opening too. Valve overlap as someone already mentioned.
Think of the 4 storked as follows:
Suck (intake)
Squeeze (compression)
Bang (ignition)
Fart (exhaust)
The video only shows suck, bang and a bit of fart...
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KB Chief Cat Herder
Shame that 2 stroke one isn't a little larger cos it's a bit hard to make out whats happening around the piston etc. But it shows the effect of the exhaust pulse beautifully.
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Wherever I may roam
Thats a pretty darn cool vid, imagine the pressure and heat on the camera.
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Fair weather rider
Something around 9000kPa of pressure and 3000K temperature, or 90 atmospheres and 2728C.
Depending on the fuel make up and quality, so that camera would have to be one serious piece of kit....
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Freakin' hippy
Just two tiny fiber-optic fibers epoxied into a tiny drilled hole, one for the light and one to carry the image back.
Determined to kill my bike before it kills me
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