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Nail Board Test

Discussion in 'Metallica' started by SuchMuch, Dec 23, 2016.

  1. SuchMuch

    SuchMuch Detectorist

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    Top AKA tester:
    ***qte***
    One of the well known misleads regarding hunting on trashy site is a type of tests "nail-coin-nail". Such type of tests means experiments performed on a flat surface with targets in different positions, it's a 2D model. But trashy site has an additional dimension in real life: vertical. Testing metal detectors in 2D model is able only to reveal how fast detectors are. 2D model cannot represent polluted with iron site where people lived for a long period of time. Such sites are infested with iron at different depths as well and it's a 3D model: coin could be laying under, between or above iron objects at the same time. And this is completely different environment metal detector is to operate in and 2D tests as well as so-called "nail board test" cannot even approach to such imitation.
    For instance, it's real when metal detector cannot hit the coin laying on surface and being observed by detectorist due to massive amount of iron laying under the coin. The another example is middle size nail laying close or above the coin that masks coin signal completely for majority of ultra fast modern metal detectors if detectorist swings into direction of nail length.
    ***unqte***

    Lvovich:
    ***qte***
    It's good when electronics of metal detector is ultra fast, but it's just a part, small part of solution of trashy hunting task.;)
    ....
    Right coil is responsible for 80% of success on trashy site.
    ***unqte***
     
  2. tnsharpshooter

    tnsharpshooter AKA Novice

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    Righto,,,,I Do 3D testing,,,this is better test.

    Also,,,a lot of videos doing test seem to key on coin and nail.
    Need more test posted with coin and lower conductive junk target(s).
     
  3. TS
    TS
    SuchMuch

    SuchMuch Detectorist

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    There is one thread to be translated later: "sniper DD coil vs sniper Concentric vs sniper Super Concentric"
    AKA has almost finished with new 5" super concentric coil, they left to test in real super trashy conditions
     
  4. mschmahl

    mschmahl "AKA Deutschland" Group Moderator Staff Member Supporter

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    This coil (5" super concentric) Sounds very interesting.
     
  5. nigel westwood

    nigel westwood Iron Lord

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    victor says there is no sense to produce concentric coil , but in a 3D world the concentric can get the coin below nails better than DD any day of the week .
    if victors logic is correct ??? why are rutus producing dd/conc option . and why is the machine thats set to topple the deus ,nokta impact going to be produced with concentric option ?I tried to point out the weakest link in aka machine set-up and info gets swept under carpet .
    Yes they built prototype 5" concentric to test the issue and see if it merited production ,but i,m now doubting we will ever see a prodution 5" conc for sorex.
     
  6. TS
    TS
    SuchMuch

    SuchMuch Detectorist

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    As far as I understand Lvovich's post, he said it makes sense to produce super concentric coils instead of just concentric coils.
    Rutus Alter71 and Nokta Impact are new machines and there are lots of "marketing" surrounds them. Let's wait for a while and "marketing" calms down. Then we could judge if these detectors are worthy.
    Concentric coils have been requested many times for long period of time and AKA finally followed that moan
     
  7. ghound

    ghound AKA Sectarian

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    The Signum has speed, and does similar to the Deus on the nail board test, but so far i haven't found a setting where it can do a simple nail over coin 3D test.
    The Rutus and Deus both excel in those basic 3D tests, personally between the two i found the Rutus a better machine overall.
    Saying that, i bought the Signum for deep detecting old pastures with little junk in them, so not bothered.
     
    Last edited: Oct 7, 2017
    SuchMuch likes this.
  8. Wayne

    Wayne AKA Veteran

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    I agree the Rutus Alter 71 is a great machine in the iron.
    With that said don't try and take my MFD.
     
    ghound likes this.
  9. Rew

    Rew "AKA United Kingdom" Group Moderator Staff Member Supporter

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    This is my take with a very cheep kids machine.
    Minelab thought that they had it nailed at the show, but I think not:Rofl:
     
  10. Wayne

    Wayne AKA Veteran

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    They my be just happy that they caught up .
    I have an 800 on pre order, we will see.
     
  11. TS
    TS
    SuchMuch

    SuchMuch Detectorist

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    Signum should be set different when you are hunting for low conductors and high conductors on trashy sites.

    With RTM-99 and 6"@14 kHz or 6"@20 kHz Signum leaves no chances to Deus and Rutus on trashy site :p

    Deus guys usually keep discrimination on 6..7,5 that is equal to AKA's LT Bound on -40. You know what LT Bound does with iron, don't you? ;)
     
  12. Wayne

    Wayne AKA Veteran

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    It paints iron to look more lIke non ferrous.
    But don't paint too much !
     
    Rew and SuchMuch like this.
  13. Shelton

    Shelton AKA Sectarian

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    With MM algorithm?
     
  14. Wayne

    Wayne AKA Veteran

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    You can set it with all programs.
     
  15. TS
    TS
    SuchMuch

    SuchMuch Detectorist

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    with any algorythm
     
  16. ghound

    ghound AKA Sectarian

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    I have my LT bound set to -35 with zero disc which i like, it seems to be about right for the site i'm using it on at the moment, i dig the odd nail.
     
  17. Shelton

    Shelton AKA Sectarian

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    LT works fine for me also. I have very harsh conditions here.
     
  18. Wayne

    Wayne AKA Veteran

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    The site I'm working now I have LT set at -21.
    Not much trash.
     
  19. ghound

    ghound AKA Sectarian

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    First machine i've owned that can do this with a large coil !

     
    SuchMuch and Rew like this.
  20. TS
    TS
    SuchMuch

    SuchMuch Detectorist

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    Have you seen Equinox in action? it does the same!
    --- Double Post Merged, Oct 18, 2017, Original Post Date: Oct 18, 2017 ---
    More videos with Signum capabilities check here: "Signum MFD/MFT Modification "Pro""
     

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