by Prototype » Sat Apr 10, 2010 2:37 am
I am very pleased! This is exactly where I was hoping this would go! With any and everyone sharing their knowledge about this seemingly mysterious creation, this could very well turn into a hot bed of Tin Goose info. In regards to the left and right sides of the car being of different dimensions, I am not surprised at that at all, it's one thing to sculpt and shape an automobile design, but to do so and duplicate it from one side to the other in such a short time frame, as they did, details get "lost in translation", especially when you are dealing with an unforgiving substance such as steel. Companies such as Metalcrafter's and Marcel's, who build incredible one-off car bodies from scratch use cold rolled steel, which is easily manipulated into just about any shape imaginable. The sheet steel available on the open market about the time the Tin Goose was being constructed was hot rolled steel, called iron sheet, it was not only difficult to work with, brittle, and lacked malleability needed to "work" it into the shape desired, but of a poor quality that contained very little carbon, owing to it's brittleness. This low carbon steel probably contributed to the rusty state of the Tin Goose when found, since dipping of raw car bodies was not utilized until Fisher Body Co. began the process in the 1950's, augmenting the hand applied "cavity wax", that could not be applied to all areas that were hidden (preventing rust on a hurried project was the least of their worries). In the life photos, you will notice that the unfinished bodies on the welding line have a shine to them, this is a light oil (castor or mineral) used in the stamping process, but you can see the rust that had already formed on some of the shells before finishing. I'm sure the various companies who supplied Tucker with the stampings to make the 58 bodies used the cold rolled variety because the kirksite material used for the dies is very soft and can only be used for a short time before they wear out and must be discarded. Kirksite is still used today, but only for limited pilot runs. Tool and die making is not what it is today, they had to be made by hand, there were no CNC milling machines in the 1940's! It was common to use 16 or 18 ga. steel on cars back then, even 8 ga. (1/8 plate) was used for bracing, rocker sills and floor pans, but now most cars are made of higher tensile 22 ga. galvanized "the new steel" that is supposedly stronger than what was used even 25 years ago. I know a little off topic, but I just wanted to share! Keep that wonderful trivia and information coming! Great Work!
If you didn't get dirty, then nothing was accomplished!