New Chassis Concepts for Scratchbuilding Racing Frames
By Carl Caiati
as published in Car Model magazine - July, 1967
This article, the final published form of which is poorly organized, recounts two very late 1966 and early 1967 developments in chassis design; the Iso-Fulcrum and the "raft" (now commonly known as "jail-door"). The author also offers a few examples of these two new types plus other new (in mid 1967) more standard design chassis, including chassis scratch built by himself and others, and chassis offered by manufacturers.
There are a few solid examples of the chassis types that are the subject of the article, one of which is Cox's La Cucaracha chassis, and another is a scratch built chassis by Harold Irving. Unfortunately, the author's own scratch built Iso-Fulcrum example is not an Iso-Fulcrum at all, and his raft, or jail-door type has a semi space-frame center section, which pro builders stopped using in early 1966.
