So, Porsche wanted to test their 911 Dry Sump....
02-09-2010, 07:07 PM
#1
So, Porsche wanted to test their 911 Dry Sump....
....for endurance, so chose the Nurburgring. I imagine they sat drinking coffee with their feet on the desk while the testing was taking place. 
http://www.youtube.com/watch?v=jBhq4hu4E78
http://www.youtube.com/watch?v=jBhq4hu4E78
03-09-2010, 01:23 PM
#7
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03-09-2010, 01:35 PM
#10
I've found that life I needed.. It's HERE!!
....for endurance, so chose the Nurburgring. I imagine they sat drinking coffee with their feet on the desk while the testing was taking place.
http://www.youtube.com/watch?v=jBhq4hu4E78
http://www.youtube.com/watch?v=jBhq4hu4E78
03-09-2010, 01:36 PM
#11
feet found, i have 2
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G force comes from an acceleration in a certain direction, if it is held in position it will not simulate substained g-force, the machine would need to continue spinning in the same direction for a period of time to simulate a long fast sweeping corner.
03-09-2010, 01:41 PM
#12
I take it none of you spotted the G-meter in the vid? In case you didn't notice, a car doesn't normally drive at those angles, so throwing the engine over like that at these speeds EXACTLY replicates the G-force that was obtained from data-logging the cars around the ring. They just fed this data in, and the jig replicates the same G by it's exagerated movements 
.
In case you didn't notice, a car doesn't normally drive at those angles, so throwing the engine over like that at these speeds EXACTLY replicates the G-force that was obtained from data-logging the cars around the ring. They just fed this data in, and the jig replicates the same G by it's exagerated movements .
03-09-2010, 02:07 PM
#18
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I take it none of you spotted the G-meter in the vid? In case you didn't notice, a car doesn't normally drive at those angles, so throwing the engine over like that at these speeds EXACTLY replicates the G-force that was obtained from data-logging the cars around the ring. They just fed this data in, and the jig replicates the same G by it's exagerated movements .
In case you didn't notice, a car doesn't normally drive at those angles, so throwing the engine over like that at these speeds EXACTLY replicates the G-force that was obtained from data-logging the cars around the ring. They just fed this data in, and the jig replicates the same G by it's exagerated movements .Tom
03-09-2010, 02:17 PM
#20
Professional Waffler
I take it none of you spotted the G-meter in the vid? In case you didn't notice, a car doesn't normally drive at those angles, so throwing the engine over like that at these speeds EXACTLY replicates the G-force that was obtained from data-logging the cars around the ring. They just fed this data in, and the jig replicates the same G by it's exagerated movements .
In case you didn't notice, a car doesn't normally drive at those angles, so throwing the engine over like that at these speeds EXACTLY replicates the G-force that was obtained from data-logging the cars around the ring. They just fed this data in, and the jig replicates the same G by it's exagerated movements .
03-09-2010, 02:30 PM
#21
There are no corners other than a constant circle that can SUSTAIN 1g either . There are certainly no corners at the 'ring that approach anything like a reasonably lengthy constant radius (such as Corum at Snetterton - which AFAIAA is the one of the worse in the world for sustained G).
. There are certainly no corners at the 'ring that approach anything like a reasonably lengthy constant radius (such as Corum at Snetterton - which AFAIAA is the one of the worse in the world for sustained G).
03-09-2010, 03:00 PM
#22
Professional Waffler
i ment for a period of time, not indefinably
the porsche 997 turbo can generate 1.36 lateral G and 1.16g under braking, so porsches test rig is wank! lol
the porsche 997 turbo can generate 1.36 lateral G and 1.16g under braking, so porsches test rig is wank! lol
03-09-2010, 03:06 PM
#23
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In the nicest possible way (i mean that) it doesn't need to!!
Q, how do you simulate a fluid in a square tank under 1G ++
A, easy, rotate the tank/rig 90'
Remember, regardless of how many G you put the oil under, it cant get out of the tank, at most it can 'climb' the sides, and these 'sides' become the base if you ask the rig to rotate through 90 desgrees - simples!!!!
Tom
Q, how do you simulate a fluid in a square tank under 1G ++
A, easy, rotate the tank/rig 90'
Remember, regardless of how many G you put the oil under, it cant get out of the tank, at most it can 'climb' the sides, and these 'sides' become the base if you ask the rig to rotate through 90 desgrees - simples!!!!
Tom
03-09-2010, 03:19 PM
#24
. http://www.youtube.com/watch?v=oboewg0iATo
It is NOT real world conditions and is an irrellevant test set up by the Yanks (as it is the only test their shonkily suspended cars can do well at
). Normal cornering G (if you look at ANY data-logging) is sustained for miniscule time periods (in fact the same as shown on this test rig, as it EXACTLY REPLICATES the G sustained at that part of the Ring in the video ) - and if you look at the brake G being developed under simulated braking on the video, it reaches 1g on several occasions.
03-09-2010, 03:26 PM
#25
As per below....
At first, you might think this rig can simulate only 1.0g since it only has Earth's gravity providing the persuasion. But you'd only be partially right. Indeed, the steady-state limit that can be achieved in the rig is 1.0g, but due to the inertia of the oil inside the engine, transient maneuvers of up to 1.4g can be replicated.
At first, you might think this rig can simulate only 1.0g since it only has Earth's gravity providing the persuasion. But you'd only be partially right. Indeed, the steady-state limit that can be achieved in the rig is 1.0g, but due to the inertia of the oil inside the engine, transient maneuvers of up to 1.4g can be replicated.
03-09-2010, 03:36 PM
#26
As per below....
At first, you might think this rig can simulate only 1.0g since it only has Earth's gravity providing the persuasion. But you'd only be partially right. Indeed, the steady-state limit that can be achieved in the rig is 1.0g, but due to the inertia of the oil inside the engine, transient maneuvers of up to 1.4g can be replicated.
At first, you might think this rig can simulate only 1.0g since it only has Earth's gravity providing the persuasion. But you'd only be partially right. Indeed, the steady-state limit that can be achieved in the rig is 1.0g, but due to the inertia of the oil inside the engine, transient maneuvers of up to 1.4g can be replicated.
Bend over Gareth and take your
like a man 
!
03-09-2010, 06:24 PM
#28
Professional Waffler
just had another look at the rig,,,, and i still dont like it
i know it says it can generate upto 1.4g, but this isnt for all of the engine, but it must be from the furthest point from the pivot. as the angular velocity close to the pivot will be low, so a low acceleration figure will be viewed, so there will be uneven G laterally across the cross section of the engine
wank,,, go away porsche and design something better LOL
i know it says it can generate upto 1.4g, but this isnt for all of the engine, but it must be from the furthest point from the pivot. as the angular velocity close to the pivot will be low, so a low acceleration figure will be viewed, so there will be uneven G laterally across the cross section of the engine
wank,,, go away porsche and design something better LOL
03-09-2010, 06:29 PM
#29
Professional Waffler
In the nicest possible way (i mean that) it doesn't need to!!
Q, how do you simulate a fluid in a square tank under 1G ++
A, easy, rotate the tank/rig 90'
Remember, regardless of how many G you put the oil under, it cant get out of the tank, at most it can 'climb' the sides, and these 'sides' become the base if you ask the rig to rotate through 90 desgrees - simples!!!!
Tom
Q, how do you simulate a fluid in a square tank under 1G ++
A, easy, rotate the tank/rig 90'
Remember, regardless of how many G you put the oil under, it cant get out of the tank, at most it can 'climb' the sides, and these 'sides' become the base if you ask the rig to rotate through 90 desgrees - simples!!!!
Tom
simple yes,, but wrong, we are talking about an engine here and not a square tank.
the rate at which oil will move through the engines oil returns will vary depending on what g-force and what angle these g-forces are acting
03-09-2010, 07:29 PM
#31
just finding my feet
i just love the sound it makes,, id LOVE to come home from work and just turn that on and relax listening to it and watching it yank about, could do it for hours
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