ToddB64
Elite Member
Hi Digger27 !
This is in reference to Search number 84048 and Skiwhiz's reply-post #11, 8-22-11 08:29 PM, on page 2 of your thread titled First real hunt....Compadre and his explanation of how to adjust the Disc. dial (using a 1.5mm Allen wrench) to synchronize the dial indicator mark with the Compadre 5c Nickel icon.
I would appreciate your critique on my following thoughts.
Since Nickels can vary in alloy-composition and diameter, as shown below taken from the 2013 66 th Edition of US Red Book, with the diameters varying from .705 inch to .835 inch (roughly ⅛ inch difference.), theoretically the Compadre could respond audibly different to these Nickels.
Variations in metal composition affect conductivity and coupled with differences in diameters and the resulting surface area for eddy current production might have an effect on the volume and tonal characteristics of the audio feedback we hear.
I would think that synchronizing the dial indicator mark with the 5c Nickel icon on the Compadre faceplate would be a good representative position, but not always “spot on” due to the conductivity and size variations of the different Nickels. Of course, synchronizing the dial indicator mark with the 5c Nickel icon, would put the mark in the right starting position and you could tweak the dial up or down the arc from there to get the full tone of the target.
·Three-Cent Nickels (1865- 1889) alloy .750 copper, .250 nickel, diameter 17.9mm (.705 inch).
·Shield Nickels (1866-1883) alloy .750 copper, .250 nickel, diameter 20.5mm (.807 inch).
·Liberty Head Nickels (1883-1913) alloy .750 copper, .250 nickel, diameter 21.2mm (.835 inch).
·Indian Head or Buffalo (1913-1938 both varieties) alloy .750 copper, .250 nickel, 21.2mm (.835 inch).
·Jefferson (1938 -1942, 1946 to Date) alloy .750 copper, .250 nickel, and the Wartime Silver Nickel (1942-1945) alloy .560 copper, .350 silver, .090 manganese, net weight .05626 oz. pure silver, diameter 21.2mm (.835 inch).
Thanks much !
ToddB64
This is in reference to Search number 84048 and Skiwhiz's reply-post #11, 8-22-11 08:29 PM, on page 2 of your thread titled First real hunt....Compadre and his explanation of how to adjust the Disc. dial (using a 1.5mm Allen wrench) to synchronize the dial indicator mark with the Compadre 5c Nickel icon.
I would appreciate your critique on my following thoughts.
Since Nickels can vary in alloy-composition and diameter, as shown below taken from the 2013 66 th Edition of US Red Book, with the diameters varying from .705 inch to .835 inch (roughly ⅛ inch difference.), theoretically the Compadre could respond audibly different to these Nickels.
Variations in metal composition affect conductivity and coupled with differences in diameters and the resulting surface area for eddy current production might have an effect on the volume and tonal characteristics of the audio feedback we hear.
I would think that synchronizing the dial indicator mark with the 5c Nickel icon on the Compadre faceplate would be a good representative position, but not always “spot on” due to the conductivity and size variations of the different Nickels. Of course, synchronizing the dial indicator mark with the 5c Nickel icon, would put the mark in the right starting position and you could tweak the dial up or down the arc from there to get the full tone of the target.
·Three-Cent Nickels (1865- 1889) alloy .750 copper, .250 nickel, diameter 17.9mm (.705 inch).
·Shield Nickels (1866-1883) alloy .750 copper, .250 nickel, diameter 20.5mm (.807 inch).
·Liberty Head Nickels (1883-1913) alloy .750 copper, .250 nickel, diameter 21.2mm (.835 inch).
·Indian Head or Buffalo (1913-1938 both varieties) alloy .750 copper, .250 nickel, 21.2mm (.835 inch).
·Jefferson (1938 -1942, 1946 to Date) alloy .750 copper, .250 nickel, and the Wartime Silver Nickel (1942-1945) alloy .560 copper, .350 silver, .090 manganese, net weight .05626 oz. pure silver, diameter 21.2mm (.835 inch).
Thanks much !
ToddB64
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