09-17-2010, 10:40 AM
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Half-Ass Member
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Join Date: Jun 2005
Cobra Make, Engine: ERA #732, 428FE (447 CID), TKO600, Solid Flat Tappet Cam, Tons of Aluminum
Posts: 22,025
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Quote:
Originally Posted by Excaliber
If Patrick had a shorter cable, of the same size, would the amps go down from 210?
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No. In theory, the resistance would go down, so the amperage would go up.
Quote:
Originally Posted by Excaliber
If Patrick had a smaller cable, same length as now, would the starter still draw 210 amps and over heat the cable in the process?
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A smaller cable, with the same length, would result in higher resistance, and thus, less amperage.
Ernie, here is a handy-dandy little resistance and voltage drop calculator http://www.stealth316.com/2-wire-resistance.htm I think most of our battery cables are 4 gauge, right? If you add in the additional few feet of wire that it takes to move a cable to the back (my current battery-to-solenoid is 32 inches long) it will calculate the additional resistance and voltage drop. It even has a "battery move to trunk" example. |
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