Idea: Active Aerodynamics on a 944
04-28-2011, 05:22 PM
#16
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Well you could just flip the lights up.
04-28-2011, 05:23 PM
#17
Almost Addicted
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04-28-2011, 05:26 PM
#18
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I don't think there is much to tune.. Lift as big flat surface as possible and let it brake as long as your stop lights are on.
The problem is that actuators should be FAST and stronger than resistance of air at high speed. And that means STRONG. Actuators that can do that can make sense (price-wise) on pagani, but on 944 Cayenne calipers make more sense.
The problem is that actuators should be FAST and stronger than resistance of air at high speed. And that means STRONG. Actuators that can do that can make sense (price-wise) on pagani, but on 944 Cayenne calipers make more sense.
04-28-2011, 06:02 PM
#20
Drifting
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If you read my OP, I was conceptualizing this from the beginning for a 944 race car, that theoretically would go fast enough, often enough, to make it useful.
04-28-2011, 06:10 PM
#21
Drifting
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I don't think there is much to tune.. Lift as big flat surface as possible and let it brake as long as your stop lights are on.
The problem is that actuators should be FAST and stronger than resistance of air at high speed. And that means STRONG. Actuators that can do that can make sense (price-wise) on pagani, but on 944 Cayenne calipers make more sense.
The problem is that actuators should be FAST and stronger than resistance of air at high speed. And that means STRONG. Actuators that can do that can make sense (price-wise) on pagani, but on 944 Cayenne calipers make more sense.
Extreme example of how concept aero mods can make real world positive results:
More info on above car
From the site:
That front wing, dubbed the “fwing”, is the reason why Chris holds the time attack record title for the Fastest Lap in a Front-Wheel-Drive (Unlimited Class), with a time of 1:27.30, performaed at Willow Springs International Motorsports Park.
Last edited by IMB951; 04-28-2011 at 06:43 PM.
04-28-2011, 06:45 PM
#22
Late Porkchops
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The older Mitsuibishi had some active aero didnt it? Maybe the 3000 GT in top trim or something like that. Not as complex as you describe now and certainly not supercar level.
I had a girlfriend whose dad owned the place so we had one out several times. At high speed. Damn thing had twin turbos. That was back when I was high speed and low drag or something like that
. I dont remember all the in and outs of it - but you might have a look at it.
For as good a car as that was it is surprising that Mitsuibishi did not do better. I know they had some real behind the scenes financial messes ongoing, and that car was heavy too, but man it had some stuff on it at the time.
I had a girlfriend whose dad owned the place so we had one out several times. At high speed. Damn thing had twin turbos. That was back when I was high speed and low drag or something like that
. I dont remember all the in and outs of it - but you might have a look at it. For as good a car as that was it is surprising that Mitsuibishi did not do better. I know they had some real behind the scenes financial messes ongoing, and that car was heavy too, but man it had some stuff on it at the time.
04-28-2011, 11:44 PM
#23
Nordschleife Master
Slowing a 250mph supercar, it might make sense. Slowing a car from 100mph? might not get the same benefit. As to placing something IN FRONT of the windscreen, I'd want to make sure it doesn't snap off and crash through your skill. Rear spoiler would make more sense.
On a Turbo, I don't know how you'd have room for a front unit like the photo shows given the motor, radiators,engine cooling air intakes ect.
On a Turbo, I don't know how you'd have room for a front unit like the photo shows given the motor, radiators,engine cooling air intakes ect.
Does anyone here, ever go fast enough for a splitter to be relevant? (I'll help out here... the answer is still yes)...
NOW here is an interesting twist to the OP post... how about not only an aerobrake, but an auto-adjusting spoiler, and auto-adjusting splitter, both having user definable extension and retraction curves based on separate input signals (speed, air pressure, braking, etc..)?
How does THAT idea strike anyone??
BTW, I'm just musing out loud here...
04-28-2011, 11:47 PM
#24
Nordschleife Master
Or so I have heard...
04-29-2011, 12:08 AM
#26
Late Porkchops
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[QUOTE=JohnKoaWood;8511421
NOW here is an interesting twist to the OP post... how about not only an aerobrake, but an auto-adjusting spoiler, and auto-adjusting splitter, both having user definable extension and retraction curves based on separate input signals (speed, air pressure, braking, etc..)?
How does THAT idea strike anyone??
BTW, I'm just musing out loud here...[/QUOTE]
________________________________________________________________________ _____________________________________________________
The auto adjsuting spoiler (at speed) and the brake and steering is what was on the Mitsuibishi 3000 GT Twin Turbo. But not user definable. Based on speed.
But that was before the iphone.
I am sure there will be an app for it soon. Lets see how is my speed, pressure, ........oh crapola just missed the turn.
NOW here is an interesting twist to the OP post... how about not only an aerobrake, but an auto-adjusting spoiler, and auto-adjusting splitter, both having user definable extension and retraction curves based on separate input signals (speed, air pressure, braking, etc..)?
How does THAT idea strike anyone??
BTW, I'm just musing out loud here...[/QUOTE]
________________________________________________________________________ _____________________________________________________
The auto adjsuting spoiler (at speed) and the brake and steering is what was on the Mitsuibishi 3000 GT Twin Turbo. But not user definable. Based on speed.
But that was before the iphone.
I am sure there will be an app for it soon. Lets see how is my speed, pressure, ........oh crapola just missed the turn.
04-29-2011, 04:43 AM
#27
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Nice throw to Freddie. Pity no-one round here will know who the hell he was.
04-29-2011, 08:25 AM
#29
Three Wheelin'
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The Chrysler Crossfire has a speed sensitive wing. If they can do it, why can't we?
I love custom fabrication discussions, and I love Aero discussions. For me, the theoretical type discussions are usually the "bench racing" kind of talk during the winter months, but what the heck Go for it! I could list a ton of reasons not to do it, but it is much more interesting to think of the reasons to do it instead!
It is a bit over the top for a street car (not that it ever stopped me before) but quite useful and interesting/exciting to work on for a race car/fun track car. Making it work off the brake pedal is a good idea. Tap the brakes lightly, and the "flaps" do a partial peek up, stand on the brakes hard, and get full flaps until you get off the brakes! Simple controller. Where and how to mount the flaps, and for a street car how to make it look good, as opposed to some mad max looking contraption would take some thought.
The front header panel would be a good place to start. Cut it out and make it stand up!
I love custom fabrication discussions, and I love Aero discussions. For me, the theoretical type discussions are usually the "bench racing" kind of talk during the winter months, but what the heck Go for it! I could list a ton of reasons not to do it, but it is much more interesting to think of the reasons to do it instead!
It is a bit over the top for a street car (not that it ever stopped me before) but quite useful and interesting/exciting to work on for a race car/fun track car. Making it work off the brake pedal is a good idea. Tap the brakes lightly, and the "flaps" do a partial peek up, stand on the brakes hard, and get full flaps until you get off the brakes! Simple controller. Where and how to mount the flaps, and for a street car how to make it look good, as opposed to some mad max looking contraption would take some thought.
The front header panel would be a good place to start. Cut it out and make it stand up!