Does size really matter?
Last Post 27 Aug 2018 11:09 AM by LEO LORENZ. 2 Replies.
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John TaylorUser is Offline
Greenhorn
Greenhorn
Posts:23



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27 Aug 2018 10:35 AM

    Hey All,

    Have a Whites TDI and three different sized heads.  Beyond the practical consideration of how big and does it fit in the nooks and crannies, can someone please direct me to a site or YouTube videos that address how to select what size is best for what specific applications?

    Can give more specific details on what I have if helpful, but did not want to blather on unnecessarily.

    Cheers!!

    LEO LORENZUser is Offline
    Lost Dutchman
    Lost Dutchman
    Posts:410



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    27 Aug 2018 11:00 AM
    Hi John,
    Yes size does matter. At least when speaking about MD'ing and depth and sensitivity. Hmmmm ok...well trying to make this G rated.
    I have a TDI as well. The 12" circular coil is junky.
    Leo
    LEO LORENZUser is Offline
    Lost Dutchman
    Lost Dutchman
    Posts:410



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    27 Aug 2018 11:09 AM
    The smaller the coil the more sensitive to smaller gold but less sensitive at depth. Always keep in mind there is a trade off, and you need to know what size targets you will most likely encounter in any specific area. Yes we are all thinking of finding 1 oz nuggets but its not realistic, unless you are in an area that is known to produce. If you are in open land like in Northern Nevada, a larger coil is much better to cover more territory. But if in rocky hilly terrain, large rocks....well it gets harder to work the coil in the nooks and crannies around rocks. A elliptical coil 6x10 works well. I have a 17 x 11....which is huge and also a Miner John 5x9 which also has much better noise characteristics.
    Leo
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