Re: Stupid Question #2: how does an iron frame act as a ground on our cars
Auxillarily grounds can make a surprising difference in the amount of power that gets to the starter. I was always hearing "Ya need an 8 volt battery!" No, I needed a good ground! I put a second ground on it. The old ground cable bolted to the top flange of the frame. Using the same bolt, only the underside. I changed the bolt to a 3/8 brass and ran the cable to one of the starter bolts. The starter spun over with new life, who needs 8v or 12v for that matter. We generally can't get to the ground paths and they've been rusting away for 90 years. Naturally they slowed the current down somewhat.
Terry
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