Originally posted by jamesgray3rd
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Here is something that might help you choose the wire length, with the "adams motor" Robert Adams specified 10ohm coils. He didn't say anything about the wire gauge. For my adams motor I used thicker wire and it was a very long coil to get 10ohms. You can estimate the length of a coil by measuring the resistance and dividing it by the ohms per meter/foot.
Ok according to http://www.cirris.com/learning-cente...lculator-table.
Wire Gauge 20 is 0.01015 ohms per foot so 130 feet is 0.01015 ohms per feet x 130 feet = 1.3195 ohms
Wire Gauge 18 wire is 0.00639 ohms per foot. So to match the same resistance 1.3195 ohms / 0.00639 ohms per feet = 206.5 feet
so 130 feet of Gauge 20 wire is the same resistance as 206.5 feet of Gauge 18 wire.
For my 81 strand solid state the wire is Gauge 23 and the resistance per foot is 0.02036ohms and it measures 3ohms per strand. So the estimate length is 3 ohms / 0.02036 ohms per feet = 147.35 feet
After reading thousands of posts form the monopole groups, I picked up that is makes no difference if you twist the wires or not, with regard to the performance of the coil, twisting the wires only makes it neat and tidy. The down side of twisting the wires is that you lose some of the length of your multi-strand wire/cable which means less turns.
When I wrapped many rolls of insulation tape around the 81 strand cable, I realized that a cable this thick may not need twisting together, just tightly wrap insulation tape around the multi-strand cable. Then you will get a couple more turns around the spool.
I hope this helps
kind regards
Nityesh
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