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davsgold

X-coils For The 4500/5000 GPX

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There have been a fair few people asking about X-Coils for the older detectors, GPX4500/5000 etc

Now we have X-Coils for the GPX 4500/5000 a 12" spiral round, and a 15" spiral round, and then a 15x10 spiral, and also a 17x12 spiral, and a few of the 12x6 size coils are out in the field being tried already.

So I'll be heading out to give these a run over the weekend  and guess what, No patch lead needed.

 

four x-coils for GPX.jpg

15x10 spiral for the GPX

15-10 x-coil for GPX.jpg

17x12 spiral for the GPX

17-12 x-coil for GPX.jpg

12" spiral round for the GPX

12 inch round x-coil for GPX.jpg

15" spiral round for the GPX

15 inch round x-coil for GPX.jpg

cheers dave

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That's really good news for GPX users, I know a few have been waiting for this day. They also they work well on the QED for existing QED users too.  As most of you probably know I've been using some GPX X-coils for quite some time now.  I couldn't be happier with them.

xcoils.jpg.b0b29e9c9a625a5b210dedad4e34a377.jpg

You'll find it hard to pick a favourite out of that selection Dave, I sure can't 🙂

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That's not fair, I'm still waiting for a 12x6, I know a few others have that size and are trialing them so all good. 👌

And the manufacture tells me they are working on an 11x10 spiral for the QED's and obviously it will also work on the GPX4500/5000's as well, this will be the smallest full spiral coil so far, the gold will be jumping from the ground when they get this one out. 😃

cheers dave

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Yes, that 11x10" is basically a dream coil for me.  :nugget:.... wait that nugget picture is too big for me.   nugget.jpg.672c65d9e4dd77c2337f48ec9d5bb972.jpg  :laugh:

I just want to show this old video I did when I first got the 12x6" X-coil on a .22 gram nugget just showing how well this little coil combined with the QED handle EMI.   I was up on a rocky outcrop that goes right up so I was standing right next to the power lines,  I was very close to the wires, I don't know exact distances but you can see in the video, I was quite uncomfortable standing there as I know it can be quite dangerous to get close to the wires.

IMG_20190613_132905.jpg

Where the pick is I was standing.  The QED is on maximum gain

The little 12x6" is an extremely stable coil, so far it's looking like the 15x10" might be almost as immune to power lines.  I haven't been to that exact spot but I've been under lines fine.

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One of the best coils that I ever used was 14 x 7 inch that I used in shallow virgin patches or on well hit spots that had a lot of area to cover to find the ones that they missed.

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2 hours ago, geof_junk said:

One of the best coils that I ever used was 14 x 7 inch that I used in shallow virgin patches or on well hit spots that had a lot of area to cover to find the ones that they missed.

Have you ever used a flat wound (spiral) coil Geof? The difference between them and bundle wound is pretty remarkable.  I invested in a Detech 15x8" bundle wound coil before I knew these X-coils were coming.  It's a nice stable coil but in terms of sensitivity to small gold it doesn't compare at all to the X-coil 15x10" even though it's bigger, it seems if soil conditions allow it there is no reason to use bundle wound coils anymore like the Commanders.  Even Nugget Finder has dropped their Advantage range of bundle coils and no longer makes any bundle coils, it's all EVO's now which are spiral wound, their DD X search DD's are combo bundle and spiral like the little 12x6" X-coil I love so much.  It had to be a combination of windings to be able to make such a small coil with flat wires.  All these new X-coils are spiral wound.

I guess it's a lot easier to fit this inside a coil (bundle)

f049dc_592fdff4a5954d55b4141e1f269311bb~

than this (spiral/flat)

f049dc_fe9325e8dae14e8c8c7d4a18bb3b56d9~

Lots of people may have never used spiral coils as they moved off their GPX and are now on GPZ's when they were hitting the market.

The Nugget finder website has a good information section on why use a spiral over a bundle wound coil - https://www.nuggetfinder.com.au/spiral-wound-coils

According to the NF Website - Flat winding produces a more efficient coil.   The result is a coil with improved depth and sensitivity across all target sizes.

I was surprised they got rid of the little 8x6" Sadie bundle coil from the lineup, but from what I've seen a much larger flat wound is more sensitive.

I would have to agree with them, these new X-coils are crazy sensitive to small gold, even the big 15" round.

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Good information Simon.

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5 hours ago, phrunt said:

...1...

Have you ever used a flat wound (spiral) coil Geof? The difference between them and bundle wound is pretty remarkable.

...2 ...  

I was surprised they got rid of the little 8x6" Sadie bundle coil from the lineup, but from what I've seen a much larger flat wound is more sensitive.

 

...1 ...

No as have been unable to chase the gold for a few years now, due to health problem that the wife has got. Not counting mine (I'm over my health problems now)  

             When I made a PI detector back  before SD-2000 was out in the mid 1980's               I constructed a spiral coil for it out of (mainframe computer terminals connecting wire) silver wire. The coil worked great The PI detector had very good depth, but it was too slow and the clicking ( geiger )sound of the audible signal was hopeless for my type of prospecting.

...2 ...

The Sadie coil was a great coil. I won mine when Rohan ran a competition for its name before it was released. I did not use it much as the wife claim it and would not let me get my hands on it.

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I hope the health problems clear up soon!

It does say on the NF website about the early pioneers of detecting making their own spiral wound coils, looks like you were one of them, brilliant.

This method of winding has been used for many years in custom made and privately built coils however until recently it was only available commercially for a short period in the late 1990’s.

I guess they kept the secret to themselves 🙂

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Hello, friends. I am buy New X-coils 15" for my GPX 4000. It's very deep and sensitivity coil. 

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  • Similar Content

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      Picked up my 10 inch x coil during the week, good to get out to my usual spot, picked up these in 2 hours detecting, really impressed with this coil. 

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      I was very keen to go for a gold detect this weekend, only problem is the weather forecast wasn't really detecting weather, I wanted to go back to the spot I did very well last weekend where I found .865 of a gram  I just had a funny feeling there was more in that hole as I was getting faint signals with the GPZ but at the time I wasn't sure if that was just the hot rocks, this particular spot is full of hot rocks of all shapes and sizes, right down to pea size up to giant bolder.  I was hoping my assumption there might be more gold there would be correct.
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      Not much left of it.  Further up the road the weather was getting worse, and I'd forgot to put my chains in the car, if it got too bad I'd have to turn back.

      After a bit more driving as I got towards the lake nearer to JW's house the skies cleared and there was no snow up that way.

      I stopped at the shops to get a few things and picked up a tool from the hardware store expecting to have to smash through rock to recover nuggets like JW has been doing.  That seems to be the way nuggets are mostly found at this spot, my nugget in the hole last weekend was a bit unusual.  JW always goes straight to detecting the rock where he's doing very well, 10 or so little nuggets most days.  I got to JW's and he decided the weather was good enough so off we went.  JW went to his rock wall again, that thing just keeps on giving.... and I went to my hole.
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      I had my first 3 within about 30 minutes I would guess... I took my watch off during the virus lock down as I never needed to know the time anymore and I've never put it back on.  I got used to not caring what time it is.  That little guy is 0.034 of a gram, and the 10" X-coil found it with no troubles at all.  I run my GPZ in HY Norrmal, Manual GB with gain on maximum, all else defaults.  I don't bother with the little yellow ferrite ring, I feel it doesn't help at all in our soil.  I don't understand Minelab's decision not to make a small coil, they probably don't even know the full potential of the GPZ on small gold as with a small coil it's absolutely deadly, the tiniest bits very comparable to a high frequency VLF like the Gold Monster.  I think with the 8" coil it will easily match the Gold Monster.  I think they didn't want to take the SDC 2300's market away from the GPZ owners, they'd rather sell them a second detector than a coil - more profit!

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    • By phrunt
      There has been a lot of  talk lately about gold being found on or off bedrock, I've personally done well finding gold in soil, even my biggest bit to date has been in soil.  JW found this little soil ridge well up above bedrock, it's soil all the way to ground level 50 to 100 feet below along the top of the ridge, as you go down the sides of it the gold disappeared, oddly right at the top of this ridge has been a very productive spot for gold for us both.  We did a number of posts about it at the time last summer when we were going there on the bike ride of death along a little track with a big drop.
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      Here is the photo for the total of the day

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