Quote:
Originally posted by David_Hayward
3. I have been comparing the C15 chassis with the FAT and other 4 x 4 chassis and to these untrained eyes the chassis rails look similar but otherwise there is nothing that suggests that one begat the other. My research suggests the F15 chassis was independently designed from the 4 x 4 series [and I stress the Ford chassis not Chevrolet]. I believe and willing to be proven totally wrong that the FAT chassis was able to be the basis for the F30S/F60S and then the F60L. The F15A though was an adjunct of the FAT with common chassis components but with different transfer case, etc. from the other 4 x 4 chassis but has no apparent correlation with the F15 chassis.
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I can't stitch the pics together for a better comparison as the file becomes too big to attach. If you compare the F15 and F15A chassis side by side, the only differences are in the crossmember for the transfer case and the way that the rear of the gearbox is supported. In other respects, the chassis appear the same.
Comparing the C15 with the C15A, or indeed any of the other Chevs it is quite different, particularly around the front springs and would seem to be an orphan (or unmarried uncle in this family tree).
The C8/C8A chassis has more in common with 3/4 ton Commercial Chev chassis (including drivetrain) and would seem to be more of a hybrid of commercial vehicle with CMP cab, rather "pure" CMP. Unfortunately, the C8A/C8AX was not in use by the Australian Army, so it's chassis never made it into the handbook. (Still doesn't explain the absence of the C60X!)