Nexus 30" and 21" Concentric Coils For Minelab GPX
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Rush said:
The coil is super stiff. No flexing what so ever. No false signals from mechanics, no touch sensitivity at all. You can bump it all day long. This is why I chose Carbon Fibre as it can not be done in any other way while retaining any useable weight.
The ears are thin indeed, but been made from Glass Fibre (the only Glass Fibre component in the coils) they don't need to be any thicker. Non of my coils have ever ended up with broken years and they are all made the same way.
Next videos that are coming soon are;
21"CC complete air test, same as 30"CC air test.
30"CC depth test on highly mineralised soil loaded with magnetite.
21"CC depth test on highly mineralised soil loaded with magnetite.
30" and 21" CC on 1 kg. of small Roman bronze coins at 85 cm in the ground and Iron Rejection at 10.
30" and 21" EMI suppression test 25 meters away from 50kV power lines and air test demonstration in that situation.
It takes forever to process this videos, so it will be few days I suppose.
The two coils from the videos are going on the way to Oz on Monday and will be there by the end of the week, so trials and tribulations can be arranged.
Good to see the tests & news on both these brands . :Y: ... With no giggling trees :awful:
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Just found this Video some might find it interesting,
J.
https://www.youtube.com/watch?v=lJJqBy4s6XI
J.
https://www.youtube.com/watch?v=lJJqBy4s6XI
sorry RR but air tests are time in life you'll never get back :/
air test are sales gimmicks the only test is in the fields on true targets 
erfect:
erfect:- Joined
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After detecting for well over 30 years I must of heard that air tests don't mean anything over 10,000 times, So I know Air tests have very little value compared to In ground targets but when compared to other air tests using the same machine and coil combo's then if it add 5 or 6" over a 15" Coil on in ground targets then that might be the edge a person needs,
I have been doing this long enough to know that Air Tests are proof of nothing when it comes to real world detecting, But still it is an impressive coil just the same.
I have been doing this long enough to know that Air Tests are proof of nothing when it comes to real world detecting, But still it is an impressive coil just the same.
old hand said:air test are sales gimmicks the only test is in the fields on true targets
I'm with you fellas. :Y: :Y:
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It's just a bit of fun, It is not a thing to take seriously, Is this Guy and me the only people in the world who plays with new coils when we have nothing better to do,
when I get a new coil, & sometimes just comparing 2 (or more) different setups/coil/settings, I do air tests just to compare the response of the different combos.
This is not expected to deliver the exact same results in the field.
This is not expected to deliver the exact same results in the field.
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Rush said:
Yes, A PI will display similar results where as a VLF will only manage somewhere between 30 to 75% of what they Air test at.
With a VLF it only shows that it can see the targets and is also useful for Mapping out the detection field of the coil. But in normal soils they too can surprize the owner if the ground is Damp and the mineralization is normal.
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Rush said:
Yes so was I, PI Air tests are very close to what they achieve in the ground, But a VLF can loose a lot of those distances depending on the ground.
My VLF depending on the coil will pick things up at around 2 meters away or above the coil, It will pickup my Prospecting pick from about 5 feet/ 1.5 meters away, But in good ground 3 to 4 feet / 1.2 meters is about the best it will achieve on in ground Tests.
Ridge Runner said:
i hear ya !
very impressive indeed :Y:
ower:Possibly. Here is another one with 50 cent Australian in highly mineralised soil.
I used that coin as Nenad used it to test the NF 25XDD in air, so I thought why not try the same target in the ground.
For reference the targets were placed in the ground for testing both the 21"CC and 30'CC coils.
Here is the other video for the 30"CC and the details with the target placement.
I used that coin as Nenad used it to test the NF 25XDD in air, so I thought why not try the same target in the ground.
For reference the targets were placed in the ground for testing both the 21"CC and 30'CC coils.
Here is the other video for the 30"CC and the details with the target placement.
Can you link or quote "Mr Candy" saying that air tests are the ducks guts?Rush said:
Just wondering because Minelab use a variety of test methods including laboratory tests (assume bench tests in air); manufactured & controlled test lanes; & field testing.
I assume Mr. Candy had an input into Minelabs testing methods? Maybe his comments on air testing were taken out of context given Minelabs own testing regime? If air testing was the be all to end all there'd be no need for expensive test beds & external field testing?Minelab said:
From what I can gather it's pretty much a 3 stage process:
Stage 1 - laboratory/bench/air tests
Stage 2 - manufactured/controlled test lane testing
Stage 3 - external field testing in real detecting conditions
IMO Stage 3 is the litmus test for real world outcomes.
Air test method (by Eric Foster):
Other things not necessarily equal or accountable in air tests (especially at different locations) is noise (EMI), ground/ground balance & the halo effect (some question this at all).Eric Foster said:
IB (VLF) detectors usually air test better than PI detectors BUT the PI detectors handle ground better so lose a lower percentage of performance on in ground targets as ground gets more mineralised while the IB (VLF) detectors lose a larger percentage of performance as the ground gets more mineralised.
Many believe that the "halo effect" can increase in ground target response depth? I'm not going to argue that but I have seen PI detectors do some strange things on dug out targets.
Uncontrolled test beds have various issues too.
This to me is why field testing in real conditions & your own results will always be more important than any air or test bed testing!
Candigger when can we expect to see some RELIABLE field testing of these coils here in Australia. Retrieval of in situ targets (hopefully gold) in our conditions would be more beneficial to your marketing although I think your pricing may be your biggest hurdle.
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