In warm weather a single group 31 battery will deliver enough current and maintain tolerable terminal voltages. The Mannheims with a 3KW starter will draw approx 450 amps if the starter terminals are kept at 10V. The same application with a battery that can maintain only 8V while cranking will draw 570amp. This of course causes a viscous circle of more voltage drop across each connection,cable and winding. The higher current increases the voltage drops, which causes the starter to draw even more current. As previously stated.A world of difference what you can get away with at temps above 50F vs. below 50F. Battery available energy drops rapidly as approaching freezing temps. While the engine becomes more difficult to turn. And higher cranking rpms are required to warm the air in a combustion chamber surrounded by colder metal.
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Today's Featured Article - The Ferguson System Principal An implement cutting through the soil at a certain depth say eight inches requires a certain force or draft to pull it. Obviously that draft will increase if the implement runs deeper than eight inches, and decrease if it runs shallower. Why not use that draft fact to control the depth of work automatically? The draft forces are
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