Some of this is fresh on mind since there's a battery issue I'm trying do deal with right now.
I've got a small diesel 4WD motorhome. Two FLA 12 volt starting batteries (in parallel), and two FLA 6 volt deep-cycle batteries (in series). All get charged by the single engine-driven Delco 12SI alternator. My problem is - Delco alternator does not charge at a high-enough voltage so the two deep-cycle batteries ever get past 90% full. And, if I stick in a higher voltage regulator, it will be a bit too much for standard starting batteries. Standard Delco USA reg is set at 13.8 volts. European is higher. The deep cycle batteries need a 14.2 volt regulator to get fully charged. Thus the problem.
Big boats typically have the same problem and they use a "battery to battery" charger. It allows one alternator to charge two separate sets of batteries at two different voltages. Just what I need, but way too expensive. Good example of where just a few tenths of a volt makes a difference.
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Today's Featured Article - The Fordson F Ignition System - by Anthony West. A fellow restorer contacted me earlier this year asking for some help and advice on a model F that he was restoring. He had over a period of months spent a fair amount of his hard earned cash on replacement parts for the old "trembler" ignition. Sadly though all his efforts seemed to be a waste of time and money as he still couldn''t get the temperamental old thing to run correctly!! If i said that this was a little frustrating for him that would be "conservative" in fact the problem had reduce
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