Re: PRE-ORDER (If there's interest) - 1937-1941 Light Switch Knob Assembly

Posted by Bob J On 2023/3/6 13:09:12

I was thinking the exact same thing when I laid out the drawings. If it is just a rod change between senior and Jr models, and I could get the data to describe the other size rods we could maybe include those in the set. I suspect however that Packard may have made more changes though, like knob size/style and thread interface with the switch on senior models and other years. Yearly changes in the dash was an easy thing for them and help distinguish one year from another to their sales base.
To your point about failure rate, it is us restorers that are causing the failure. Disassembly of the switch from the dash means gripping the escutcheon with pliers or something to turn it out of the switch base. Heavy damage or outright destruction is common. It is this part that is intrinsic to the switch knob. The production ones have the knob press fitted to the rod and cannot be separated without complete ruin. You may note I deviated slightly on my design so that a 1/2" wrench can hold and tighten the escutcheon with no gripping tool required.
Bob J.