Rick Wood here, in Santa Fe NM, AKA "Baja Colorado"
Semi-retired Mechanical Engineer with too much time on my hands.
I know I would (or will) really enjoy building my own camper, but my wife and I are impatient to get on the road. So we are considering 5 options:
1) Purchase a new manufactured unit. Advantage: it is quick. Problems: lots of money, and not quite what we want.
2) Have one built for us one to our specs. Problems: Finding local builder who isn’t busy, who is open to experimentation, and affordable. I think these things are mutually exclusive. Advantage: We will get exactly what we want.
3) Purchase a used (starter) unit from one of the For Sale listings. Advantage: Probably affordable, and it could get us into the campground quickly. Disadvantage: The only units that we have seen for sale within one-day drive from Santa Fe are few and those haven't been close to what we want.
4) Go ahead and bite the bullet, and build my own. Advantage: It appeals to my love of hardware. Disadvantage: Since my wife and I are both perfectionists, it could be a LONG TIME before it hits the road.
5) Stick with the tent.
Only way to decide this to do more homework. Thus, here I am pouring through this and other TD websites for ideas. Got any?
Anyway, since I know you are going to ask, we are leaning toward a 4'X8' Rimple design with 2' radii on the front and back top corners. This seems to be the best way to get all of the Galley and other cabinet space that my wife wants without going to a 9' length. She is a little "under-tall", and does not want a countertop that is too high or too far forward of the back bumper.
As a Mechanical engineer, I am interested in knowing what sort of hard data there may be on the relative aerodynamics of the various TD profiles, and of the various TD features like roof vents, and under-skirting.
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Rick Wood