[David_Hayward (RIP)]

Tony, it does indeed seem that Fords used Chevrolet cases, and I can imagine that this was the case [pun intended!] when Chevrolet axles were used. Incidentally my Ford photos show that both a F60H and FGT featured had Chevrolet axles.

Please shoot me down on this one but I think the evidence suggests that in 1939 Windsor's team compared both GMC and M-H 4 x 4 chassis, and the Ford men naturally though that the M-H setup should be used. Probably with the Chevrolet rear axle located in front....Dr Gregg's photo of the F15A pilot truck had Chev axles and most likely a M-H transfer case. There is evidence that GM of Canada had used M-H components since at least 1935. However, the basic M-H design had its shortcomings as Tony has highlighted, and although we know the DND did indeed use M-H-converted MCPs, with Thornton and M-H/Timken components, it was GM McKinnons that produced the original 4 x 4 components under licence from Timken, and Fords subsequently dual-sourced by producing their own designs based thereon in their axle plant. The new design had the options of dual-speeds [if required] and disengement of front axle. As well as right-side output.

However, when reference is made to the use of M-H layouts when the first 4 x 4 CMP trucks were conceived, I believe that I can now prove this was in fact totally correct! It is just that the part that GM played has been overlooked and forgotten...not least because the design failed in WD Trials!!