[aerohead]

Originally Posted by kach22i

FYI: pages 24-30-ish have several post by ERTW, which is the missing link several people remembered but could not locate.

http://ecomodder.com/forum/showthrea...c-9287-24.html

http://ecomodder.com/forum/showthrea...c-9287-25.html


http://ecomodder.com/forum/showthrea...c-9287-26.html


More than one person expressed misgivings about the template's application and usefulness other than in the abstract. I am not alone on that one.

The below overlays based ERTW's work, but I don't have his 3D skills/programs. They should get the point across though.

Automobile 2 - Odds And Ends Photos by kach22i | Photobucket


A different fitting attempt to convey the message.


Close up detail


So what do we do about a square peg trying to fit into a semi-circular hole?

*If you're working with a production car ignore the variance between the vehicle's outer surface architecture and that of the outer surface of the Template's 'revolution' at all vantage points radial to the polar axis of the ground plane centerline.
*In elevation,your roofline would follow the 'Template' as depicted.
*In plan-view,for the sides of the car,you would attempt to take this same profile from the roof and do a best-fit based upon the existing body camber.
*Since the body will have both vertical camber and tumblehome (when viewed from front or rear) the profile is brought into contact along flanks and greenhouse in a best-fit with the alignment based radially to the polar axis.
*Since most vehicles are defined by character lines,the body will be treated as cambered panels (as GM has done with their VOLT) and the original seams,edges and radii can be maintained as the body is generated rearwards,contracting as it projects,at no greater rate than with the half-body.
*One panel may no doubt 'force' a geometric compromise with adjoining panels and in this situation you must 'morph' the panel intersection such that it does not violate the 'Template' profile based on it's radial position with the polar axis.
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It's easier to fabricate than it is to describe.
*My CRX is an example.
*The T-100 another.
*You can see it in the AeroCivic.
*MetroMPG's Geo Metro boat tail
*3Wheeler's Insight boat tail
*MetroMPG's Insight tail in progress.
*JetroBodine's Rabbit boat tail
*The Matrix/Vibes that have been done ay EcoModder
*Redneck's Metro is the most recent example.
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Actual 'Template' research/LSR/Solar/etc. vehicles would be:
*Jaray's original pumpkin seed of 1921.
*Lay's models of 1933
*Elliott Reid's circa '34
*Heald's circa '34
*Fachsenfeld's of 1936
*the Schl'o'r car of 1937
*MG EX 181 of '57
*Mickey Thompson's 'pumpkinseed' circa 1961
*W.A.Mair's work creates a fine 'Template' when the constant-velocity portion of the model is removed,1968.
*R.G.S.White's,MIRA composite Cd 0.245 car model is not a bad 'Template' for 1968.
*D-B,M-B C-111 III,1978
*GM/AeroVironment SunRaycer,1987
*Chevy 'Express',1987
*Renault Vesta II,1987
*M-B 'Boxfish
*VW XL1,2012
*World Solar GT,Bochum University,2012
*CUER,Cambridge University,World Solar Challenge,2013
There are some others but my work books are in the cab of the truck,14-miles from here.