Found: URGENTLY - Fan Pulley Ford Lynx 12V Generator

[Tony Wheeler]

Originally Posted by Tony Smith

01A is the model code for a 1940 model standard Ford car. the "S" denotes a special part.

Very interesting Tony, and if you go back to Rick's original post where he gave his Lynx pulley dimensions you'll notice the front flange diameter is 2 3/4", whereas the pulley in my photo is 81 mm, which is closer to 3 1/4". Perhaps that's what the "S" relates to in the Lynx part number. Precisely what effect it has I don't know - I have other 4" pulleys (ie. 4" rear flange dia) with different front flange diameters again, but they all appear to fit the same belt width. Of course that's to the naked eye - you'd have to actually fit the belt and measure exactly how far out it sits to be sure. Perhaps there were slight variations to adjust rpm for particular applications, eg. the Lynx on 12V may have run a slightly smaller pulley diameter (ie. effective pulley diameter) to operate at slightly higher rpm. All speculation of course but the "S" would presumably indicate some kind of functional difference.

I'd like to see a photo of Rick's old pulley, and whether it has a part number on it. Of course there's no guarantee it's the original Lynx generator but it's quite likely to be.