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Been toying with the idea of putting a small wing on struts on the back of my 28. Mainly for looks since it's a street car. Anyone know of a good source where I can get one or have one made? I know enuf about them to be dangerous, lol.
Thanks,
Milner
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If this works https://www.facebook.com/photo.php?f...size=960%2C758 Don Long chassis builder in California --I'll get you his phone number if you wanthttps://www.facebook.com/photo.php?fbid=1387457951476034&set=t.100007837681670&type=3&size=960%2C758
Try it like this? http://www.facebook.com/photo.phpfbi...size=960%2C758
It doesn't work for me 'cause I'm not a member of facebook.. but maybe you are.Quote:
Originally Posted by jerry clayton
Tried the link and does not work, even when I'm signed in to facebook. Sorry. I think he has enough work where he wouldn't want to take time with my little request but one never knows.
Go to my Face book page---in the photos scroll down---
Denny Sent you message on FB
With John Stewart driving one of the original 8 Cragar 5 Second club------the order listed in the NHRA and books isn't correct order as they have them alphabetical from the Ontario race. I think we were actually 5 th--
There was a harmonic vibration induced tubing bending in the main wing struts-I solved it by placing a balsa wood dowel rod inside the chrmolgy tube to dampen the vibes-------Front wheel pants had low pressure inside them at speed and would suck the air out off front tire valve stems-we solved that by using air craft valve cores with more spring to offset the centrifugal force that caused them to open.
Spectators have absolutely no idea what it takes to put a 5 second car down the track.Quote:
Originally Posted by jerry clayton
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Yep Tech--back then , besides the spark plug wires, there was only a short piece of #12 wire from the mag to a toggle switch for grounding the mag to kill the ignition.
That's pretty sweet and nice info Jerry. Love the pics of those Hemi's too.
Milner, any luck on a wing yet?
Still looking, a lot of late model car wings, not too many actual race car wings. I'm sure i will find one. Learning a lot from Jerry's replies on a 5 second machine. Thanks Jerry. Also great pics too. With the angle of that wing, it must create a huge downforce at those speeds.
The angle wasn't like it looks from the picture angle-------but we did gain downforce-enough to run in the 5 second zone where our other car without (altho it held 14 track records, the NHRA national rcord, and the fastest drag race ever(at the time))))
So I'm getting the idea that you are just looking for one of the modern sportie cars airfoil? about 2 inches off deck lid?
No, not at all. Want a wing on struts. Think I found one at the Chassis Shop. It's a front wing that's the perfect size (40"x10") that wouldn't overwhelm the looks of the car. Also, I could mount it on struts connected to the trunk so it would raise and lower with the lid. The lid is steel with steel channel welded on for total support. Plenty strong. Sent an e-mail to them, keep you posted on what they say.
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Update - Called the Chassis Shop, also Pro-Werks is basically the same company. They informed me that their guy who made the wings left and they were trying to train someone new. No wings in stock. Kept surfing the internet and found Neil Parks Racing. Called and talked with Scott. They had both 8" and 12", 41" long in stock. Ordered a 12" one. Scott was very knowledgeable. Ordered the hardware for my design with ART (Applied Racing Technology). I think my crazy idea is going to work. Thanks for your help. I will follow up with a couple of pics when I'm finished. Here's a mockup in posterboard.
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Glad to hear you were able to find something and it looks like it's going to work out great.
Finished. Here's a few pics. Something different to cruise to the local burger joint on friday nights.... Thanks everyone.
Milner
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Looks nice. Was it nerve racking cutting the holes in the deck lid? :LOL:
Milner--------did you get or do any study as to down force/drag that wing will generate????? At higher speeds you are going to get a lot of force that your floor mount/ strut looks marginal for----------I don't want to see you destroy your deck led
You bet I was sweating it drilling the holes in the deck lid. One slip and there goes my paint job. Got through it ok though, no mishaps.
Jerry,
Thanks for your dire warnings of impending doom, lol. You're right, as much as I researched it, I still know enough to be dangerous. Here's some things about the setup that I took into consideration.
1. Wing is 12"x41"long and is a front wing for a AA/Fuel car.
2. Trunk floor (steel) rests directly on the kickup of the frame.
3. Used angle iron bolted to the floor as framework with 1" chromalloy tubing welded to it.
4. Removable wing supports are 7/8" chromalloy which slide down into the 1" for a distance of 4". Other lengths of the 7/8" are inside the 1" base so the wing rods rest on those and not the hood pins.
5. Wing is mounted quite low below the top of the roof with just a small angle. Maybe enough to get out of the main slip stream since the roof rises at an angle to the back?
6. No back window so the airflow is further disrupted at the rear.
7. Just got through and only had it up to 60mph so far with no ill effects. The max speed the car will see is maybe 75mph on the freeway. (at least i'm honest, high 8's and 160 only exist in my head). From what i've read, that's pretty slow for a wing to really take effect but I may be wrong. I'm thinking of taping a hand held wind meter to it to see whats possibly going on with the wind flow. Any suggestions would be very welcome. Thanks for your expert input, there's really not to much info on the internet.
Milner
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Well as I think you know I've been involved with a few wings--------I have tested them in the back of pick up trucks, and also have used neon colored yarn strips taped to structure to test airflow and taken pictures while wing was passing photog at different speeds------
As for what you have now-------I suggest that you add some angled bracing from your front tube just below the deck lid pass thru point forward/down to front of your mount at the floor. Then above the trunk continue in that manner from just above trunk lid point up and rearward to the rear pivot mount point.
to get an idea of forces involved----hold a clip board ( or any thing of about 12' by x width ) out the window while someone drives at 60, 75, 90? mph and determine how much force drag exists in something relative to the size of your wing?????????( loved testing a Go Kart at 120mph on top of truck camper shell with a scale hooked to nose for measuring the drag)
Thanks for the info, will add some angled bracing inside the trunk as you suggest. Good idea. Above the trunk lid i'm going to leave it as is as I need a little "wiggle room" when inserting the 7/8" wing rods into the 1" trunk tubing (.009 fit). Am going to try some yarn taped to different spots also. No problems so far. 120mph with a Go-Kart mounted on a camper shell? Makes me feel good. I thought I was the only one that had crazy ideas, lol.
