supersnout hoodscoop
#101
hahaha, yeah, that makes the diagram make a lot more sense. i was thinking up was away from the car, but it makes more sense if up = more pressure, which would explain air flowing right into the radiator and tons of pressure on the nose. well i guess i'm retarted too
#102
Originally Posted by RX_AV8TR
Hey....cardzrule, in case you didn't notice....we're talking about the little arrows pointing down at the base of the windscreen....that means....uhh....low pressure...
I also think that your cigarette has something funny in it. get it get it? Crack kills.
Last edited by cardzrule; 07-26-05 at 01:06 AM.
#103
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Originally Posted by NZConvertible
Exactly how much change to did your vacuum gause show? Give me a meaningful number.
Nope. We weren't talking about your intake either.
Nope. We weren't talking about your intake either.
I dunno, I guess I was just making the remark that the constructive ideas get lost in the skepticism at times.
#104
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Originally Posted by RX_AV8TR
You might want to check on that...
Originally Posted by Agent_D
lol you are stupid, those area's denote pressure areas, not the way the air is flowing, arrows pointing down does not mean air is going that direction, if that was the case the TMIC would get no air, use your brain.
im finished with the 2nd gen section for good...
#105
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i never said the hood spacer kit would work, i said i would like to test it with temperatures, and its not mine, www.aerodyne.net , they sell the kit.
#108
DONT FEED THE NOOBS
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i hereby order all bullshit to cease and everyone focus on what i want to talk about cuz its my damn thread.. back to hoodscoops nz you are banned from talking in this thread:-P you over complicate ****. and if we let you you would go on forever. now i must be off to conquer the world before dawn..... dont forget bigger hoodscoops are your friend cuz biscuit says so.. (swings pendelum in your face)
Last edited by gxlbiscuit; 07-26-05 at 02:10 AM.
#109
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Originally Posted by RX_AV8TR
Force vectors....this is just funny...I guess you think that a 500lb rock hits the ground before the feather too...
Originally Posted by Agent_D
hmmm after an hour of searching for vehicle related force vectors, you know what i find, nothing but helicopter related stuff, care to elaborate on the vehicle force vectors??
Originally Posted by gxlbiscuit
nz you are banned from talking in this thread:-P you over complicate ****.
#110
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Now I'm getting a little aggravated....in six years of undergraduate university science degree including a minor in applied mathematics (that's engineering) plus all aerodynamics courses to become a Naval Aviator I think I can talk about aerodynamics.
You will never use a force vector to describe airflow, you will decribe changes in pressure caused by changes in airflow velocity. A force vector will be utilized to show the resultant forces of air acting on a body, in this case lift and drag ...that's it!! There's not a single equation that utilizes force, that's mass times acceleration, has nothing to do with an airfoil (surface of the car).
This is no search result, and I got knee deep into it...it's a class and it's not called aerodynamics....it's called FLUID MECHANICS ( the behavior of gases in motion).
EDIT: Can we talk about cars now??
You will never use a force vector to describe airflow, you will decribe changes in pressure caused by changes in airflow velocity. A force vector will be utilized to show the resultant forces of air acting on a body, in this case lift and drag ...that's it!! There's not a single equation that utilizes force, that's mass times acceleration, has nothing to do with an airfoil (surface of the car).
This is no search result, and I got knee deep into it...it's a class and it's not called aerodynamics....it's called FLUID MECHANICS ( the behavior of gases in motion).
EDIT: Can we talk about cars now??
Last edited by RX_AV8TR; 07-26-05 at 03:13 AM.
#111
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Originally Posted by RX_AV8TR
You will never use a force vector to describe airflow...
A force vector will be utilized to show the resultant forces of air acting on a body, in this case lift and drag ...that's it!
Can we talk about cars now??
#112
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Originally Posted by Kai
It's an interesting idea, but I'm with YoD- you probably won't see any benefit from it.
I'm doing a budget front-mount myself based on a Volvo 760 intercooler (AKA a $30 junkyard special.)
I'm doing a budget front-mount myself based on a Volvo 760 intercooler (AKA a $30 junkyard special.)
#113
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Originally Posted by NZConvertible
Are you still sticking by your statement that the base of the car's windscreen is a low-pressure area?
Even if you were right and they were force vectors then the graphic would be showing more lift at the hood (lagrer arrows) than on the roof of the car, which is incorrrect.
I don't know, but I get the feeling that we're saying the same thing maybe using the wrong words.
Anyway...with the money it costs to make a scoop...I'd buy the piping and put the IC on the front....wouldn't u???
#114
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Originally Posted by RX_AV8TR
Yes, I tell you why, actually there's a resultant force in those arrows, but it's opposite to them...it's pointing down like in the front of the hood, that area creates down force not up. The laminar flow departs the hood at an angle that hits the windshield right above that small area at the base of it, creating a small low press area where the arrows are pointing down.
From AutoSpeed:
At the front there must be a point above which the air goes over the car, and below which the air goes under the car. This is called the stagnation point, and it is here that there will be the greatest pressure developed on the front of the car as it moves forward. This graphic of a Mercedes shows the high-pressure stagnation area in red, lesser high-pressure areas in green, and the low-pressure areas in blue.
You'll notice the shape of the pressure profile is simlimar to the one for the FC.
How about actual pressure measurements taken on a Lexus RX330 at 60km/h (37mph) using a Magnehelic pressure gauge (measurements in inches of water):
Middle of front numberplate +0.55
Front tow-hook blanking plate +0.40
Leading edge of front undertray +0.30
Middle of headlight +0.20
Middle of badge in grille +0.20
Base of windscreen +0.10
Below front foglight on bumper +0.05
Front wheel arch -0.10
Outer edge of headlight -0.45
Top of windscreen -0.60
Or a similar test on another car, using the same test method except driving at 80km/h (50mph), with the results again in inches of water:
That's three totally different tests all showing a positive pressure at the base of the windscreen. Does this evidence convince you? Can you present similar evidence to prove me wrong?
Even if you were right and they were force vectors then the graphic would be showing more lift at the hood (lagrer arrows) than on the roof of the car, which is incorrrect.
I don't know, but I get the feeling that we're saying the same thing maybe using the wrong words.
#115
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nice pictures NZ.. HOWEVER you are still getting waaaaaaay tofar into the hole pressure thing.. the original post says MORE SURFACE AREA. the increase in pressure which i thought would occur was a bonus... forest for the trees once again you will go on forever.....
#116
Originally Posted by RX_AV8TR
lift and drag ...that's it!! There's not a single equation that utilizes force
http://www.lerc.nasa.gov/WWW/K-12/airplane/forces.html
There are a LOT of equations that NASA says utilize force but I only understand some of the pictures and not the equations.
Originally Posted by RX_AV8TR
This is no search result
You owe NZ beer dood. You bet on on pressure not airflow.
Originally Posted by NZConvertible
I'm saying it's a high-pressure area, you're saying it's a low-pressure area. That ain't the same thing.
Last edited by cardzrule; 07-26-05 at 06:31 PM.
#117
Originally Posted by gxlbiscuit
nice pictures NZ.. HOWEVER you are still getting waaaaaaay tofar into the hole pressure thing.. the original post says MORE SURFACE AREA. the increase in pressure which i thought would occur was a bonus... forest for the trees once again you will go on forever.....
#118
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the DRAWING again shows AN INCREASED INTAKE AREA nothing about intercooler surface area. a misunderstanding on your part. and if i answered yes to your stupid question would you feel better? geesh waste of your energy... the pictures shows a bigger scoop hence the threadname "supersnout hoodscoop" notice that scoop part? or is it the hood part thats getting you. stop trying to make people look dumb..cardzrule
#119
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cardzrule...weight and thrust are not a factor in this discussion, constant speed, keep searching, hey I don't hate search btw!!!
Last night I sent the RX-7 airflow profile and your pics to an buddy of mine that went on to get his PhD to see if I just absolutely braindumped.
The area at the base of the windshield is the area of high pressure, but it's high static pressure due to the deceleration of airflow, not pressure excerted on the windshield due to it's velocity, kinda like a drop of water at the base climbs very slow up the windshield because lower pressure excerted on the surface of it and lower aiflow speed, but it is a high pressure area. Then the dorp gets accelerated as the wind excerts more pressure on it's surface, but reducing the static pressure because of higher velocity....increasing drag.
Raising the hood would lower the temp because of a static pressure differential from the inside of the engine bay but would increase the drag dramatically.
Kinda confusing, we were saying exactly the same thing...different terms but in any case I was explaining it wrong, so.....I concede...cheers.
Originally Posted by NZConvertible
That's exactly what I just said, and that's exactly what the diagram shows. Look at the arrows at the front and rear of the car. They're pointing rearwards, i.e. drag force. Look at the arrows on the top surfaces of the car. They're pointing upwards, i.e. lift force.
Sure we can. Are you still sticking by your statement that the base of the car's windscreen is a low-pressure area?
Sure we can. Are you still sticking by your statement that the base of the car's windscreen is a low-pressure area?
Last night I sent the RX-7 airflow profile and your pics to an buddy of mine that went on to get his PhD to see if I just absolutely braindumped.
The area at the base of the windshield is the area of high pressure, but it's high static pressure due to the deceleration of airflow, not pressure excerted on the windshield due to it's velocity, kinda like a drop of water at the base climbs very slow up the windshield because lower pressure excerted on the surface of it and lower aiflow speed, but it is a high pressure area. Then the dorp gets accelerated as the wind excerts more pressure on it's surface, but reducing the static pressure because of higher velocity....increasing drag.
Raising the hood would lower the temp because of a static pressure differential from the inside of the engine bay but would increase the drag dramatically.
Kinda confusing, we were saying exactly the same thing...different terms but in any case I was explaining it wrong, so.....I concede...cheers.
#121
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Originally Posted by RX_AV8TR
Force vectors....this is just funny...I guess you think that a 500lb rock hits the ground before the feather too...
#123
Thats not an FC...
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how bout a water sprayer for the ic and just using 50/50 water-alky mix? get that stuff on your hand and blow on it, its wicked cold.. if you want it even COLDER, use ethanol. that stuff gets pretty cold too.
Evo's have it stock, so do some celica GT-4's. better than having a big guady hood scoop that you cant see around.
you guys are both idiots anyways, i know 500lbs of feathers are lighter than 500 lbs of bricks... therefore the bricks would hit the ground first !
Evo's have it stock, so do some celica GT-4's. better than having a big guady hood scoop that you cant see around.
you guys are both idiots anyways, i know 500lbs of feathers are lighter than 500 lbs of bricks... therefore the bricks would hit the ground first !
#125
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Originally Posted by flubyux2
use ethanol. that stuff gets pretty cold too.