Another design assistance request.

[old man emu]

BACKGROUND:

From the 1940s to 1960s there was a cartoonist whose work was published in the Sydney, Australia tabloid newspapers. One of the recurring items in his cartoons was this three-wheeled motor car:

Profs car.jpg

I'd love to make a print of this, but need some help in creating the body. It is hard to describe, and the closest thing I can come up with is this balloon chair:

balloon chair.jpg

Another thing that is similar is a child's toy car like this:

P1013748.jpg P1013749.jpg P1013750.jpg

I was thinking of making this in at least three parts: printing the body as one unit, then making everything forward of the firewall, and finally the tailwheel. If I can get an insight on how to make the body, I might be successful.

OME

[old man emu]

A few more images for reference:
gravypie.jpg

Gravy pie rhs.jpg

[old man emu]

C'est mangnifique, mon ami.

What program did you use to create it?

Please post all the details and the file.

Old Man Emu

[LambdaFF]

C'est mangnifique, mon ami.
Old Man Emu

Thank you.
Step 1 : Create the outlay
Cab5.jpg
Step 2 : Create sections along the profile.
Cab6.jpg
Step 3 : Connect all the loose ends of the sections to create a second guide.
Cab2.jpg
Step 4 : Multi section surface
Cab7.jpg

[LambdaFF]

Step 5 : Redo most steps for engine cover. Be careful to ensure tangency at the seam for aesthetic purpose.
Cab8.jpg
Step 6 : Use mirror function (though for printing I think it would be a nice place to divide the model)
Cab9.jpg
Step 7 : Do a thick shell
Cab10.jpg
Step 8 : Prepare the front lights with a profile
Cab11.jpg

[LambdaFF]

Step 9 : Do a revolution on the profile of step 8
Cab12.jpg
Step 10 : Do a pocket for the rear view mirror
Cab13.jpg
Step 11 : Do the profiles for the wheel cover
Cab14.jpg
Step12 : Do a sweep
Cab15.jpg
Step 13 : Do a thick shell
Cab16.jpg

[old man emu]

I wish LambdFF would get back here. All I've got at the moment is a 2D shape for the body in one plane. I need to know how to make the curves to make surfaces in 3 planes.

OME

[old man emu]

Can't model and scan - I don't have a scanner. Besides, creating the object with CAD is half the fun of making an actual object.

That's a good idea about using a zero-turn mower if one ever made a person-carrying vehicle, but, unfortunately, Mercier is unknown to most people because he was working in the 50s & 60s and the adults of those times are mainly plucking harps.The significance would be lost on Gen Y. I remember him because I was introduced to his work when I was a child, and I'm a nostalgiaphile.

OME

[curious aardvark]

easiest way - for me - would be to use HULL to get the basic shape. And then difference a rescaled version. Doesn't look too difficult.
But I don't have time at the moment to do it.

[old man emu]

Doesn't look too difficult. But I don't have time at the moment to do it.

OK. I'm still researching the ways and means. I'm going through the Rhino videos to see what tools I can use and how to use them. I don't think that it's a job for OpenScad at this stage. The big problem is tying down the 3-views.

OME