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#26

ironrock
Member
Joined: 07 July 2015
Posts: 128
Member
03 October 2019 03:32 pm

Watched the vid last night, was a clear signal and nice chunk. I need someone who is an expert in this field to give me some honest info Re: I have the old coiltek 25in dd which i use on my old SD2200d, i have dug a coke can opener which was buried in an old timers hole which was later bulldozed to make a track at around 20-24in and i had my machine in it's deepest setting which is around a foot deeper than normal settings,( how do i know it's 1 ft deeper testing and more testing). I need to know if i should buy one of these new DD X-search coils or save my bikkies. What; if any advantage would i have over my old coil?
I am finally coming down to vic for a week or two very soon, my health has improved somewhat, have tried high dose vit-c did 30 grams in one day, the first day did 21 grams yesterday, today going for 15grams, i think the bug thats on my lungs is still there, but i do feel alot stronger on this vit-c so if i have to, will continue to take it until i can finish my detecting trip, then finally if this bug is still there, will go and see my quack, this is a nasty bug whatever it is let me tell ya, never experienced anything like it before, and never want to again!!
And i am thinking about stopping at Coiltek Maryborough, to have a look at what 2nd hand detectors they might have, 5000 or 4500 anyone bought one from these guys, and if so any problems?

#27

stevewilko
Member
From: West Of Melbourne, VIC
Joined: 17 October 2016
Posts: 128
Member
03 October 2019 04:22 pm

Hello Ironrock, trust you are getting better daily.

I just thought to answer you as I am an owner of the NF 25X DD coil.

For me it was a choice to upgrade in coil size, and presumably, to detect at a greater depth.

I up sized from an NF Advantage series 18" Mono coil, which is only part of my coils kit.

My current approach in 'going bigger' is to be able to re-detect the prior heavily detected areas, hopefully denuded of a lot of trash, with a sense of being able to get below or under where everyone else has been detecting tied to (perhaps) lesser depth provided with the last decades technologies, if so.

It is also the iron reject function of the latter series detectors that I think is of benefit of taking up the large 25" DD, to reduce the chance of digging very large holes for iron junk etc.

I read that you use the Coiltech 25" DD coil with an SD2200. I would think as you attest to having great usable depth currently there might not be a large gain in upgrading, however I do not know the SD2200 detector myself.

But overall, part of my reply to your post is to offer you to locate the Metal Detecting For Gold section of this forum; and on the index page I have posted a review of a couple of series of detectors with different coils that you will find as - "wilko's week out - detectors and coils - depth test results".

It was largely a fun exercise with the detectors running in factory presets but you might pick up something of value to you within.

Keep Up The Good Work. Take It Easy..
Cheers stevewilko.

p.s. The NF 25" DD was a bit of a star recruit within the test, I thought...

Last edited by stevewilko (03 October 2019 04:34 pm)


Thanking all contributors for their involvement and the quality of these posts. Prospecting with - GPX 4800 / 11" DD / 15 x 12 Mono / 15" DD / 18" NF Mono / NF 25"X DD

1 user likes this post: Ded Driver

#28

ironrock
Member
Joined: 07 July 2015
Posts: 128
Member
03 October 2019 07:31 pm

Wilko mate, thanks for the cheer up, hopefully on the improve at least for a few months, have a fairly rare lung condition and infections are part and parcel, so something i just have to fight, and unfortunately for me for the rest of my life, but i am as tuff as they come, so no little bug is going to kick my bloody ass let me tell ya!!
Yeah i did have a look at your tests, very interesting, i am assuming since these new coils are wound 2 different ways there could be some improvement at least on the sensitivity side of things, but not necc depth wise. Someone like candigger should be able to answer my question thoroughly i believe so mate if u would be kind enough.......

#29

Chrisco
Member
Joined: 24 September 2015
Posts: 22
Member
04 October 2019 09:22 am

Ironrock,
I would stick with the Coiltek if your only searching for larger gold. The nugget finder will give better depth on gold under say 3-5 ounce due to spiral winding but I doubt any advantage on larger gold at depth.
2 feet on a ring pull sounds very very good. Was that measured depth?

#30

ironrock
Member
Joined: 07 July 2015
Posts: 128
Member
04 October 2019 07:18 pm

Chrisco mate, yeah i think i will stick with the old coiltek, if i can snag a decent chunk, then hey; why not! Yep it was measured, i have a very large pick has 3 ft long handle, so i first measured with the handle then against my shoes which are size 12, so it was around the the 2ft mark, but not 100% accurate, so why i went with 20-24in!!!

#31

Jennifer
Member
Joined: 05 December 2014
Posts: 27
Member
05 November 2019 03:58 am

Chrisco wrote:

Hey Nenad,
Next time your out testing could you do an air test on an empty unflattened 375ml aluminium soft drink can and post the result?
I would be very interested to know the maximum distance it will pick this up in the air.

Thanks
Chris

Forgive if already posted.... here's your can depth.

Jen

#32

Jennifer
Member
Joined: 05 December 2014
Posts: 27
Member
05 November 2019 04:08 am

stevewilko wrote:

Hello Ironrock, trust you are getting better daily.

But overall, part of my reply to your post is to offer you to locate the Metal Detecting For Gold section of this forum; and on the index page I have posted a review of a couple of series of detectors with different coils that you will find as - "wilko's week out - detectors and coils - depth test results".

It was largely a fun exercise with the detectors running in factory presets but you might pick up something of value to you within.

Keep Up The Good Work. Take It Easy..
Cheers stevewilko.

p.s. The NF 25" DD was a bit of a star recruit within the test, I thought...

Direct link: https://www.prospectingaustralia.com.au … p?id=32051

Thank you for the info....

Jennifer

#33

Jennifer
Member
Joined: 05 December 2014
Posts: 27
Member
05 November 2019 07:19 am

wiley coyote wrote:

Being so large and powerful, does the coil produce any signal from the detector box when swinging it,or any other metallic objects on your equipment?

Provided the box and coil are in EXACTLY the same motion (ie no shaft flex), you should not hear the metal of the box unless you're hearing leaking RFI..... you can tape a coin onto the top of your coil and not hear it if the tape is tight enough... now your pick on your hip, you'll hear that for sure.. start packing on your shoulder... I just ordered mine for a huge push I'm working.

Jen

#34

Jennifer
Member
Joined: 05 December 2014
Posts: 27
Member
05 November 2019 12:40 pm

stevewilko wrote:

Hi All

A relative size comparison if you will.

If you have been considering just how large the NF 25"X DD is and have perhaps been running a tape over a table or the floor, (as I did!!)...this photo might assist!

This is a 14" wheel with a 185 14 60C L/T tyre comparison.

There are only millimetres in size difference.

https://www.prospectingaustralia.com.au … arison.jpg

Thanks to Nenad for this supply and for all his assistance throughout the forum.

Cheers stevewilko

I LOVE that photo... I stole it... hope you don't mind.. (gave you a shout out for it though) LOL

http://arizonaoutback.ipbhost.com/topic … ew/?page=2

Jen smile

1572918064_1567129517_nf_25x_dd_size_comparison.jpg

Last edited by Jennifer (05 November 2019 12:41 pm)

#35

Rush
Member
Joined: 22 May 2015
Posts: 179
Member
05 November 2019 03:23 pm

Candigger said the 25"DD would be equal to about a 19" (approximately 25"x14") or so mono coil.

Going by a test result at an in-ground test site on a 2oz gold nugget at 2 foot depth the 25"XDD was able to be raised approx an extra 6" above the ground over the nugget for a response with the Detector's Coil/Rx set to DD and slightly less above the ground when set to Mono.

The same test with a 21"CC coil with the Detector Coil/Rx set in either DD or Mono produced no response with the coil at ground level over the 2oz nugget at the 2 foot depth. Even when the CC coil's switch was set to Maximum Depth or High Mineralisation still no response to the nugget at this depth.

#36

Rush
Member
Joined: 22 May 2015
Posts: 179
Member
05 November 2019 04:31 pm

Oh I forgot to mention the tests I refer to was videoed by Gold Hunter Matt after his fall out with Candigger.

#37

Candigger
Member
Joined: 03 January 2019
Posts: 126
Member
05 November 2019 06:21 pm

Rush wrote:

Candigger said the 25"DD would be equal to about a 19" (approximately 25"x14") or so mono coil.

Going by a test result at an in-ground test site on a 2oz gold nugget at 2 foot depth the 25"XDD was able to be raised approx an extra 6" above the ground over the nugget for a response with the Detector's Coil/Rx set to DD and slightly less above the ground when set to Mono.

The same test with a 21"CC coil with the Detector Coil/Rx set in either DD or Mono produced no response with the coil at ground level over the 2oz nugget at the 2 foot depth. Even when the CC coil's switch was set to Maximum Depth or High Mineralisation still no response to the nugget at this depth.

That test was bogus and was removed from You Tube. Can you please produce a reliable new video test to back up this figures?

#38

Rush
Member
Joined: 22 May 2015
Posts: 179
Member
05 November 2019 09:16 pm

Candigger wrote:

Can you please produce a reliable new video test to back up this figures?

Unfortunately I do not own or have access to either of these coils.
Maybe Hermann can since he has your 21"CC coil and maybe get access to a 25"XDD coil?

#39

Jennifer
Member
Joined: 05 December 2014
Posts: 27
Member
06 November 2019 11:04 am

Wow...... why am I overcome with the urge to say "Coil? That's not a coil....... this is a coil" in my best Aussie accent.... whew.... that's YUUUGE.

A shot I've not seen yet, you think the 19" GPZ coil is large?

1572998615_img_6473.jpg

1572998626_img_6471_2.jpg

6 users like this post: Ded Driver, Rockwall, Deepseeker, diggin4gold, Chewy, Ship of fools

#40

Deepseeker
Member
Joined: 13 August 2018
Posts: 706
Member
06 November 2019 02:17 pm

True it is huge, but still much lighter than the Z coil. I run it with the 5000 shaft as short as I can get it and still be comfortable, a bungy, guide arm, plus I've moved the 5000 control box as far back as I possibly can to help counter-balance it. It's quite comfortable after all that, and I can swing it all day. It's more the great big bomb craters that I sometimes dig that leave me stuffed smile

Last edited by Deepseeker (06 November 2019 02:17 pm)


Try hard not to offend. Try even harder not to be offended.

5 users like this post: Jennifer, Stocky111, PhaseTech, Skip, Ship of fools

#41

NissanPtrol
Newbie
Joined: 14 November 2019
Posts: 2
Newbie
14 November 2019 05:29 pm

Hey there.
I’m a new member so forgive if this is a stupid question.
What settings would you run front and back on a 4500?
I’m in the GT vic
I’ve just purchased and would be appreciate some guidance

1 user likes this post: Ship of fools

#42

PhaseTech
Phase Technical
From: Adelaide, SA
Joined: 29 May 2014
Posts: 1,937
Phase Technical
14 November 2019 06:26 pm

I'd go with Deep, Normal, DD, Tracking.

In the Mode settings, change:
Audio to Normal
Motion to Slow.
Tracking to Slow.

Keep the rest at Factory Presets. You will need to adjust Rx Gain as required.


Agent for Minelab, Nugget Finder, Nokta & Makro, Quest, Detech, SteelPhase - Phase Technical Website

1 user likes this post: Ship of fools

#43

NissanPtrol
Newbie
Joined: 14 November 2019
Posts: 2
Newbie
14 November 2019 09:53 pm

Thanks Nenad. ? Will give those settings a try. Bit different than what I was running.

#44

wiley coyote
Member
Joined: 21 May 2016
Posts: 87
Member
14 November 2019 11:35 pm

G'day Nenad. I'm thinking about buying the Nugget Finder 25" DD coil, but I'm torn between buying that or the 25" N.F. mono coil. I want to detect my old patches and need the deepest ground penetration I can get. I've done them with the 19" Z coil and the 19" evolution. Which coil would you recommend for the most depth in the G.T. And will either of them punch much deeper than the coils I've already used? Cheers wiley.

#45

diggin4gold
Member
Joined: 27 December 2016
Posts: 232
Member
15 November 2019 12:32 am

wiley coyote wrote:

G'day Nenad. I'm thinking about buying the Nugget Finder 25" DD coil, but I'm torn between buying that or the 25" N.F. mono coil. I want to detect my old patches and need the deepest ground penetration I can get. I've done them with the 19" Z coil and the 19" evolution. Which coil would you recommend for the most depth in the G.T. And will either of them punch much deeper than the coils I've already used? Cheers wiley.

This will give you a clue to make your decision easy as.

There might be a mineralized layer of ground underneath your old patches that holds gold nuggets in them that a mono coil cannot give a return signal because of the highly mineralised layer. gold-nugget

#46

wiley coyote
Member
Joined: 21 May 2016
Posts: 87
Member
20 November 2019 12:51 am

Thanks Nenad. I might start with the D.D. If that finds anything, it'll have paid for itself, so i'll get a mono as well, and see if that finds any the D.D. missed. That will be a good test. wiley.


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