Cant get my head round the RPM thing
#1
Cant get my head round the RPM thing
If your car is doing 6000RPM then parts in your engine are turning and moving 100 times every second .... My brain simply can't fathom something moving that quickly ......
#2
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Like when you type a message on the internet to Australia - it gets there instantly!!
But electrons have to move all that distance - you would end up in my nuthouse with me if you thought about it too much!!
Pete
But electrons have to move all that distance - you would end up in my nuthouse with me if you thought about it too much!!
Pete
#4
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Originally Posted by Gutmann pug
Just thought I would start the thread before I left home to watch the might Pompey stuff Boro .........
Cheer the BORO on for me!! When is kick-off??
Boro will have their likkle kiddies out and their old 'not-so-goods' - expect to see Maccarone up front and a bunch of 17 year olds behind!
You will win no doubt
Enjoy the match!!
Pete
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Originally Posted by Gutmann pug
If your car is doing 6000RPM then parts in your engine are turning and moving 100 times every second .... My brain simply can't fathom something moving that quickly ......
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#8
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Originally Posted by robsw
Then try thinking about the speed of light and the space/time continuum, and how it affects our perception of our universe and beyond!
#10
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Originally Posted by Gutmann pug
If your car is doing 6000RPM then parts in your engine are turning and moving 100 times every second .... My brain simply can't fathom something moving that quickly ......
It is totally mental to think about it though!
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Originally Posted by [Davey]
The crank is rotating 100 times a second, but the number of reciprocations depends on the type of engine (4 stroke, 2 stroke) and how many cylidners and valves it has.
It is totally mental to think about it though!
It is totally mental to think about it though!
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Originally Posted by robsw
Then try thinking about the speed of light and the space/time continuum, and how it affects our perception of our universe and beyond!
#13
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Originally Posted by Zen Performance
I think you should apply some more thought to that statement!
If you think 6k is fast in a 4 stroke just consider the latest F1 engines turning at 20k! Fancy mapping one of those??
JohnD
At 6k the 2ltr. engines piston does 0 to 33.5 mph (rounded) in 0.0025 sec. (How sad's that for a Saturday afternoon )
Last edited by JohnD; 15 April 2006 at 04:20 PM.
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Sorry to bring this back from the dead (been away over easter) but im intrigued by this statement from Davey, as he seems to be knowledgeable.
How does this work then Davey? 100 RPS in a 2 stroke = 200 reciprications, 100 RPS in a 4 stroke = 400 reciprications.
Could you give us a formula for this involving number of valves/cylinders etc?
Originally Posted by [Davey]
The crank is rotating 100 times a second, but the number of reciprocations depends on the type of engine (4 stroke, 2 stroke) and how many cylidners and valves it has.
Could you give us a formula for this involving number of valves/cylinders etc?
#16
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Originally Posted by p1mark
Sorry to bring this back from the dead (been away over easter) but im intrigued by this statement from Davey, as he seems to be knowledgeable.
How does this work then Davey? 100 RPS in a 2 stroke = 200 reciprications, 100 RPS in a 4 stroke = 400 reciprications.
Could you give us a formula for this involving number of valves/cylinders etc?
How does this work then Davey? 100 RPS in a 2 stroke = 200 reciprications, 100 RPS in a 4 stroke = 400 reciprications.
Could you give us a formula for this involving number of valves/cylinders etc?
I was thinking more along the lines of how many moving parts not how often they move, forgive me for being a dick.
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Originally Posted by pslewis
Like when you type a message on the internet to Australia - it gets there instantly!!
But electrons have to move all that distance - you would end up in my nuthouse with me if you thought about it too much!!
Pete
But electrons have to move all that distance - you would end up in my nuthouse with me if you thought about it too much!!
Pete
Any engineer would know that the electrons themselves don't move all that distance, the "motion" is transfered from one electron to the next. Think of it like a very long train with lots of carridges. As the engine on one end of the train pushes the motion is transfered from carridge to carridge via the couplings eventually resulting in the carridge furthest away from the engine moving. Same goes for electrons in electricity cable.
Of course sending a message on the Internet to Australia is a very bad example as the "electrons" have to pass through all sorts of media more than likely getting turned into light at some point for transfer through fibre optics.
Back to school for you Lewis
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