A question about the construction method.

[spl310]

The original cars had a steel birdcage to support the body. Why wasn't that made in aluminum for weight savings - at least on the race cars? It would also mitigate some of the galvanic corrosion issues.

[strictlypersonl]

Because the birdcage was welded to the steel chassis, and aluminum tube would actually have had to be a bit heavier for equivalent stiffness. (And stiffness is what you feel when you experience "body integrity".)