Wings and such

Anything aero-related (wings, under-trays) etc. Separate from "Wind Management", which deals with protection from wind buffeting.
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rennkafer
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Re: Wings and such

Postby rennkafer » 13 Feb 2018, 14:06

Here's an idea.

1974 shadow DN4, rear wing probably generates as much downforce as anything we're likely to.
Shadow-DN4-Chevrolet-110373.jpg


Rear wing mounts are fabbed from tube with a sheet metal cover (DIY Aero tube), bottom has a horizontal tube welded to it. Attached to the car with a single bolt in double shear (bracket welded to chassis)

Shadow-DN4-Chevrolet_17.jpg


The two forward rods are just fastened with pip pins (also in double shear), easy to remove.

Shadow DN4 2.jpg


When you remove the pins it rotates out of the way to remove bodywork and work on the engine.

Shadow DN4 1.jpg
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Re: Wings and such

Postby Midlana1 » 13 Feb 2018, 14:20

Very helpful pictures, thank you!

I'm aware that when trying to figure something out, I tend to come up with some idea and focus entirely on going that way, and not zooming out frequently to see what else is out there.

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Re: Wings and such

Postby rennkafer » 13 Feb 2018, 15:53

I have the advantage of having worked on a lot of cars with fairly rudimentary aero on them ('60's/70's F1/F2/Can Am), which is doable for mere mortals, unlike more modern cars.

That was just the first one that popped into my head that I thought may be adaptable to Midlana. I'll have a look through my pics and see if anything else looks relatively simple.
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Re: Wings and such

Postby Midlana1 » 13 Feb 2018, 18:00

Given that these wings are small and require a 1" diameter tube through them, and because it's it's going to be a two-element assembly, I'm unsure how to proceed.

Do I make a fixed assembly, make the trailing wing AOA adjustable, or even both?

I assume the main wing can be fixed relative to the mounts and that AOA can be altered with the mounts.

I guess the real stumbling block is what to do about the trailing wing, suspecting it needs to be adjustable but unsure how. Do I leave the wing segments loose on the tube and anchor them in position via end plates permanently attached to the wings, and the end plates bolt to the supports at the desired angle.

Or, rivet the wing to the tube and adjust the tube angle somehow. If that's done, how does the rotating assembly attach to the end plates at the outside ends. Seems I'm right back to making intermediate plates that bolt to the wing, then the plates bolt to the mounts/end plates.

As you can see, I'm at the flailing about stage.

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Re: Wings and such

Postby rennkafer » 13 Feb 2018, 21:06

I've seen all of those done, Kurt.

Here are a couple ways the rear element has been done. May have to enlarge the pics a bit.

This one is a Ralt RT-1 Formula Atlantic

March 79B.jpg

RT-1.jpg



This is a 1970 Brabham BT33 F1

BT33.jpg

Brabham-BT33-Cosworth-81979.jpg

historic-brabham-cosworth-bt33-up-for-auction.jpg
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