i kinda got side tracked. i am interested in the merits/demirits of the transit chassis frame compared to sprinter.
on edit: on second review i got what ron refers to as C, L. and box - the structural steel members' cross section shape. (not the member layout.) for sure box beats C beats L w/r torsional shear and even axial stresses due to twisting, and same order for deformation resistance (member stiffness). whether hi or lower steel strength, the material stiffess (E = modulus of elasticity) is the same. and sice the rigidity of a steel member is the product of its cross-sectional size and E, a lower strength steel w/ thicker cross-sections may be stiffer overall.
w/r a fp for the transit, i think i'd like a no-slide coach house 221xl plan, but w/comfy twin beds and removable back cushions, and one or 2 positions to place pedistal tables for eating or computing. bath away from beds gives more two-room privacy for early risers.
http://www.coachhouserv.com/img-content/floorplans/large/221XL-SD.jpg
