aero bed cap questions

[kach22i]

Ca_Yeti, email it to me, I'll post it for you if you cannot get it to post.

[freebeard]

http://s478.photobucket.com/user/yeti_87HB/media/s10aero.png.html

If I cut and paste just this much, it takes me to the Photobucket page which fails to load the image. The problem may be with them.

Why not just create an album here and use it?

[canadian_yeti]

aahh there we go lol

[freebeard]

You mentioned a Dakota thread. Did you see this one?

http://ecomodder.com/forum/showthrea...ild-34179.html

[kach22i]

Originally Posted by kach22i

There is a recent aero-cap thread where wood slats were used. Seek it out, I might be able to find it. I'm mentioning it because he said he made a slight mistake not following the template true which no one else could see. You don't want to make the same error, apparently it is all to easy to make.

I found it................was on the homepage of this forum.

http://ecomodder.com/forum/showthrea...-34179-15.html

[freebeard]

http://ecomodder.com/forum/showthread.php/1st-gen-toyota-tundra-aeroshell-build-34179-2.html#post520579

The CNC ribs would look good under clear plastic.

[canadian_yeti]

did I apply the template properly? how to I interpret it to calculate my angles? do I have to have compound curves?

that all wood one on the taco is just gorgeous, but waaay out of my skill and budget lol

[NeilBlanchard]

Originally Posted by canadian_yeti

did I apply the template properly? how to I interpret it to calculate my angles? do I have to have compound curves?

that all wood one on the taco is just gorgeous, but waaay out of my skill and budget lol

Your photo is close to a direct profile, but not quite. So the overlay is approximate, but not precise. I think the angles are labeled on the profile drawing? And yes, the curve is compound, I think.

If you cut ribs from foam, and use 1/4" foam as a skin, you can fiberglass that, and get the shape with a lot less effort.

[canadian_yeti]

so should I try to take a more direct 90deg side profile and re-apply the template?

[freebeard]

did I apply the template properly? how to I interpret it to calculate my angles? do I have to have compound curves?

Thee Template is a harsh mistress. I think it's a distraction. It is dependent on a bluff hemispherical nose to set up the air flow over the rear tail section. It has a half-circular lateral section and your vehicle doesn't. I produced this to try and loosen it's grip on people's minds:

http://ecomodder.com/forum/showthread.php/why-does-template-have-half-body-revolution-23333.html



Once you get away from a pure body of revolution, what's happening at the front bumper will affect what happens at the top of the tailgate.

IMHO as long as you can get a seamless tangent at the cab and it doesn't taper too fast you're good to go. Consider the front of this car. The A-pillar and that front bumper approximate the shape of a cab and tailgate. This shows that you can approximate closely with two rectangles and a triangle.



The challenge with a pickup is a two part problem, since you can't taper the bed. I view the Beetle similarly with the rear fenders substituting for the bed.



If the sides of the aerocap taper faster than the top, I think it would act like a tail-fin and improve directional stability on the road.

For your second question, you are looking for lofting in naval architecture.