Dichotomy,
The whole chassis is welded up on a jig before it is completely powder coated. The chassis is self is a little over 28' end to end, the wheel base alone is 260" or so. The tubing is 4340N usually 1.5 inch .083 wall but we also use 1, 1.125, 1.25, 1.375 in other areas. The car is assembled on a jig, the prints are largely in our heads or in the fixtures we use. Entering the dragster chassis market right now is a very daunting task though. Few are buying from the surplus of chassis builders, and its showing, people are shutting down. On top of that the industry lives off of the name of the builder, people plop 15k on name just as much as a chassis. If you really wanted to take a look at building them I would suggest buying the SFI spec sheet. It details the type, location and specifications of each bar in a generic form. The SFI spec shows us what bars need to go where in relation to the driver or other items. The exact dimensions vary depending on builder, driver, and engine/propulsion system. Ours are basically built on a jig and laid up as we go using what we know works. Each generation is slightly different from the last, this one is probably the third or fourth now. When your building less than five at a time spread out over a couple of years it is financially not workable to have detailed drawings.
Feel free to ask any other questions you might have though, I will be glad to try an answer them.
Happy Thanksgiving to all!
Strip
