Quote:
Originally Posted by Kube
Why would a 60HP have a smaller pulley than the 85HP? Both have identical 6v electrical systems and both need to charge at the same rate.
In 1940 there were two different pulleys. The first (early) design was larger in diameter than the later design.
That had nothing to do with 60 or 85 applications.
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I don't know, I'm not an engineer
There were a lot of different pulleys available over the years. A mid - late 1930s car with big V8 typically used a pulley .408" to .438 diameter. The V8 60 used a 3.68" diameter pulley in '37. In '38-'39 it could be either 3.71" or 3.40" diameter pulley. In 1940, the 01A-1000-B V8 60 generator used either a 3.12" or 3.18" diameter pulley.
On the left is a 1937 V8 60 pulley, 3.68" diameter. PN BB-10130-B. On the right is a big V8 pulley 4.38" diameter. PN 68-10130-C.