Aerodynamic streamline template - online tool (view streamlined extension on any car)

[ecomodded]

When matching my car to the template i see the roof fits better up front of the template but the tail fits better at the rear of the template.
Since the rear is the main point of the template it makes sense to fit the car to the rear of the template for sizing and template placement.

[aerohead]

Originally Posted by ecomodded

When matching my car to the template i see the roof fits better up front of the template but the tail fits better at the rear of the template.
Since the rear is the main point of the template it makes sense to fit the car to the rear of the template for sizing and template placement.

The 'Template' must be used exactly like it is represented,matching max. roof camber locations in order for flow attachment and pressure recovery to function properly.
There's no 'wiggle' room.

[ecomodded]

I was under the impression there is some wiggle room.
I have been reading, on here , that there is allowances in the angle used of the template that still works "well".
By using the rear fit profile, the length of the "tail" is shortened.
My car fits in the profile both ways, it's roof profile is odd, it is like half a globe.
I am thinking of using the rear fit profile to make a shorty Kambak with, so you know where i a coming from.
Getting to the steeper angle right away will make the kambak perform better, i think..

[aerohead]

Originally Posted by ecomodded

I was under the impression there is some wiggle room.
I have been reading, on here , that there is allowances in the angle used of the template that still works "well".
By using the rear fit profile, the length of the "tail" is shortened.
My car fits in the profile both ways, it's roof profile is odd, it is like half a globe.
I am thinking of using the rear fit profile to make a shorty Kambak with, so you know where i a coming from.
Getting to the steeper angle right away will make the kambak perform better, i think..

There are some images of VW's 3rd-gen 1-liter car online.This roofline is the 'faster' profile.If you pull the curvature down any sooner than what VW has done,you'll have separation.
We have a lot of latitude in what we can do with the front of a car,but not so for the rear end.
You can't cheat back there.This is why the 'Template' was introduced.
Follow VW and you'll be okay.

[ecomodded]

Thanks for the advice, Great idea using the LX1's profile.

[seifrob]

So I have finally made right-to-left version for those of you who have photograph of your car from the wrong side.

I also have a question to Aerohead, if he is still reading this thread:

what exactly are meanings of these numbers? The small size doesn't help to recognize them too.

I can identify angles on wheels (15, 10,10,10 degrees),
but I am confused with the others:
these on the ground line - Do they mean percentage of the overall length?
these around the boat-tail - is it the inclination? Could you possibly supply either a hi-res version of the drawing, or some sort of table with inclination numbers? It would be far better than try to decipher it from the image. I plan in the future to make some sort of rough boat-tail dimensions calculator.

[Xist]

Great tool! Thank you so much!

Would it be possible to save us a step and copy the work area to our clipboard?

Please?

[radioranger]

wondering if anyone has a similar plan from the top view, could help on my truck ,

[seifrob]

i am working on that - aerohead has template that works both ways (side view and top view). I am trying to add also the second one.

About the clipboard - use shortcut CTRL+Print screen. Then paste to your favourite picture viewer/editor (Irfaniew, MS Paint, Photoshop, GIMP, Word...). AFAIK it is not possible to do more simple than that (using javascript).

EDIT: two templates now available - the one is more neat, the other more universal. Use as shown in http://ecomodder.com/forum/showthrea...tml#post116820 (post #13)

[radioranger]

Great i was thinking of the possibility of doing a fairing in the other direction on the nose of my Ranger, it is very blunt and the rain on the top of the hood just sits there at highway speed. I was thinking something sort of like a forties car hood sitting on top of the one i have, sectioned of course or just a ships prow type of air dam, made of foam or similar with clear covers for the lights set at an angle, also in the theory angle , doesnt these extreme wing shaped extensions generate lift on the body of the car and isnt that what Pete Brock ran into with the Daytona Cobra coupe. not that we're going fast but just in theory ,