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EP Touring Car AARCMCC Wing Rules

EP Touring Car AARCMCC Wing Rules

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Old 02-16-2016, 03:42 PM
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Default EP Touring Car AARCMCC Wing Rules

Could someone please confirm if I'm reading the rules correctly, as I see many people not following them the way that I interpret them. I probably read them wrong.

9.5.2 DIMENSIONS
Wing chord (including any flaps or extensions) Min 20 Max 40
Wing endplate (when separate) 40 x 20

I always trim the 'height' of my wings to fit 'inside' the wing end plate of 40x20 as that's what I always thought the rule was. However, the wing 'cord' rule only dictates the length (front to rear) of the wing.

Maybe I read them wrong and only need to worry about the height of the wing staying under the roof line?
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Old 02-16-2016, 04:53 PM
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Chord is measured diagonally so you need to cut the wing smaller than the 40mm end plate which is measured horizontally. The height also needs to be lower than the roof of the body, which will depend on how your body is mounted.

In general, if you cut on the lines you should be right unless your body is mounted too high at the back.
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Old 02-16-2016, 05:04 PM
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That makes sense. It also means that all these wings I see that I think are not legal are actually further outside of the rules than I first thought?!
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Old 02-16-2016, 05:14 PM
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Craig, like this?
Attached Thumbnails EP Touring Car AARCMCC Wing Rules-rcwing.jpg  
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Old 02-16-2016, 06:33 PM
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Originally Posted by poeee View Post
Craig, like this?
what you have drawn makes sense if you read that rule in isolation, however the current rules state also;


9.5.2.3 The wing must not extend higher at any point, including endplates and flap, than the roof height. Side dams may be fitted but must be a reasonable representation of those fitted to the original car and must fit in the 40mm x 20mm rectangle allowance as part of the wing. Gurney flaps if fitted must fit within the wing dimensions. Wing chord to be measured as 40mm, Measured as the horizontal width of the wing.


so it is a horizontal measurement of width - not an oblique one.
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Old 02-16-2016, 06:51 PM
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So there is no rule on the height of the wing itself, as long as it's not above the height of the roof when mounted on the car? Which is basically what I was originally asking.
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Old 02-17-2016, 01:42 AM
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Originally Posted by poeee View Post
So there is no rule on the height of the wing itself, as long as it's not above the height of the roof when mounted on the car? Which is basically what I was originally asking.
No the height is 20 mm max.
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Old 02-17-2016, 02:04 AM
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Originally Posted by Richards Racing View Post
No the height is 20 mm max.
Which is exactly how I've always interpreted the rules, and therefor cut my wings to.
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Old 02-17-2016, 04:31 AM
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Originally Posted by Richards Racing View Post
No the height is 20 mm max.

I dont think that is technically correct.
The rules only state the end plates have to be 20mm high and 40mm long
The rules dont state that all the area of the wing must be contained within the end plate dimensions. Only that it cant be higher then the roof.

I love interpreting rules
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Old 02-17-2016, 02:07 PM
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Originally Posted by evochick View Post
I love interpreting rules
Ditto to that!

I'd love some 'official' diagrams...
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Old 02-17-2016, 02:51 PM
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Agree every person can interpret anything to suit what they want too so diagrams would make it clear. All commercially made testing equipment you slide the gauge over the end plate and wing so 20 mm otherwise you are are told to cut the wing down so gauge fits over.

Originally Posted by poeee View Post
Ditto to that!

I'd love some 'official' diagrams...
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Old 02-17-2016, 05:45 PM
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Actually I have read the rule again this morning and its very black and white, that there is no height restriction other then the roof line.
In the dimensions table it even states when the measurement of the end plates its done when separate from the wing

"Wing endplate (when separate)"

So if we all want a max wing height we should make a rule for it and submit it,
but will also need to take into account that in relation to the gurney flap part of the rules.
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Old 02-17-2016, 06:51 PM
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introducing simple to interpret diagrams into the rules - and maybe even some marked up real world photographs perhaps - is something I/we want to introduce.

the list of things to do is growing though

CS
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Old 02-17-2016, 08:07 PM
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Originally Posted by AARCMCC EP ONR View Post
introducing simple to interpret diagrams into the rules - and maybe even some marked up real world photographs perhaps - is something I/we want to introduce.

the list of things to do is growing though

CS
+1

Yes, there is a few rules that are "open to interpretation" in different ways.
Clear, concise, & easy to follow rules will make things easier for all involved.
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Old 02-17-2016, 10:44 PM
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Excellent! I'm glad I brought this up.
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