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nugget hunter nz

Did My Own Gpz Adapter П

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Good one! Now the race is on to see which one of us first finds GPZ gold.   That's a good looking adapter.

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G'day Nugget Hunter NZ

good work there, looks like your going to use the coil in the river behind Simons' place that is all flooded, did you silicone up the air equalization valve or leave it not done.

cheers dave

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Yep...looks good. I would wrap it way more with insulation tape as added support & strength.


On a personal note....I will never be putting my Zed coils in water, but the areas where I mostly detect there is no water up in the hills any way. I even hate using my detector out in the rain, of which the other day out with Simon it was raining most of the time. I shouldn't have gone. I wouldn't have normally but knew that Simon was eager to try his "new" set up. After a few hours & 4 bits of recovered gold & two lost ones I had had enough & called it quits as I reckoned the detector was starting to act a bit weird. I didn't know at the time that Simon had text me to say his back was giving him grief & he had had enough to. I didn't take my phone with me but must have timed it right when I caught up with him. I put it down to the coil getting drowned as I have a good cover on the actual detector control box & the handle pod. I honestly don't know how the coil can be waterproof with that pressure vent valve.  The guy I got my Zed off is from the West (wet) Coast & he killed his ML 14" coil detecting in West Coast creeks. It was warranted as being waterproof so Minelab replaced it under warranty. The West Coast & its weather is not very detector friendly. I am not prepared to risk it. My thoughts always were that the ML or any 14" size coil of that type construction & design ( foam filled) is a beast of a coil to try to subject to using underwater with fighting the buoyancy & water flow. The 11" ML coils were bad enough on my PI's. The coiltek little 6" round wasn't too bad though & handled it well. Was good for getting into tight spots in among the bedrock & fighting the current. I had two of those so that if I stuffed one by using it under water I still had a good one, but it has survived.

Good luck out there

JW 🤠 

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1 hour ago, kiwijw said:

I wouldn't have normally but knew that Simon was eager to try his "new" set up. After a few hours & 4 bits of recovered gold & two lost ones I had had enough & called it quits as I reckoned the detector was starting to act a bit weird. I didn't know at the time that Simon had text me to say his back was giving him grief & he had had enough to.

That's pretty incredible as I sent the text message and no longer than 3 minutes later you were back to where I was ready to go 🙂 talk about timing.

It certainly wouldn't hurt to add more tape over it, you could also get some big dual wall heat shrink and put it over the tape, it would look nice then and hold it all together with it's adhesive as it shrinks.  I am guessing you'll be out using it today! Good luck on the yellow stuff.

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20 hours ago, nugget hunter nz said:

So I couldn't resist having a crack at my own adapter soon as my x-coil turned up today. IMG_20200205_183413.thumb.jpg.0588747069dfcfe8c44bc43b9a876e84.jpgIMG_20200205_183417.thumb.jpg.64d53cbdc2f6df69fb96077a81c9e146.jpg

I was pooping my undies on the enitial turn on but all in all wasn't to bad to do it you take your time I started with number 3 blue wire at bottom first as hardest to get to to solder then worked my way up to 2 and 1 the 4 and 5 spent a good 20 mins thoroughly checking for any shorts or anything when I was happy I hot glued all wires and invetween stopping them from being able to move or that in future then heat shrink followed by lots isolation tape I then put the female plug back on the std 14 and works like charm  I also waterproofed the xcoil by adding marine silicone in and around the plug and a thin layer along the joining lip were skid plate goesIMG_20200205_194949.thumb.jpg.9d7b0e9e28d7d27f6a917f167b425f26.jpg

all and all thought for a first attempt wasn't to bad and I didn't make it go boom so that a bonus 

With the fine look of your work might we have our North American adaptor solution?  Seems like it wouldn’t be difficult for someone who can solder making a simple test socket for plug shorts or crossed wire if doing enough of them if that’s the only risk? In the long run easier on the shorts😀🩳🤭.

solder... I had one of those moments typing this spelling the word solder just didn’t look right to my dyslexic eye... went back and reread the initial post to double check my doubt and you managed to tell the whole story without ever writing solder, god I love spell check, Wikipedia and thank you Rob for the tips.

second thought risk is in the chip too I guess, oh well we can dream.

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Mitchel has likely found a good X-coils adapter maker in the USA, he's getting his done professionally at the moment, if he is happy with how it looks and the price of getting it done then it's all go for the people in the USA who were unable to solder up their own.  It's certainly sounding promising.

It's weird when you strike a word like that, sometimes I get a word I'm sure is spelt right but it just looks weird when you type it.

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The only problem i see down the track is that there is enough strength between the chip and the gpx plug.

Every time the gpz shaft is extended its going to be putting pressure in the adapter.

As someone else here mentioned, continual stretching may cause the adapter to break a wire, causing a short.

I was pretty happy to see that Pat who made mine has used a good quality (and thick) heat wrap that covers the chip and the gpx plug. The heat rap used on mine looks like it will take a lot of the stress as the shaft is extended

The heat wrap also seems to have shrunk slightly into the grooves of the chip/plug which should also help it slipping off.

Looking at your adapter, the grooves on the chip seem very prominent which to me looks like its a very thin heat wrap or only electrical tape over the plug. I don't think id be relying on electrical tape to give the adapter the strength between the chip and gpx plug that is probably needed

Just my two bobs worth.

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Pat used dual wall heat shrink like the latest instructions people are supplied with to make the adapter recommends.  It has a glue on the inside of it that when heated up to shrink the heat shrink becomes sticky, when it cools down the glue sets and you have a very strong bond, it's often used for waterproofing joins in wires for underwater use on boats.

I think everyone should be using it on their adapters and not just the normal cheap heat shrink and even putting a few layers of it on wouldn't hurt.

The hot glue inside the adapter plug would stop any shorting if a wire's solder connection broke as if done properly the solder joins will have glue surrounding them everywhere. 

But you're right Jin, that adapter looks like it lacks heat shrink. It could always be added now.

When made to specifications an adapter should be very strong.

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3 hours ago, Jin said:

The only problem i see down the track is that there is enough strength between the chip and the gpx plug.

Every time the gpz shaft is extended its going to be putting pressure in the adapter.

As someone else here mentioned, continual stretching may cause the adapter to break a wire, causing a short.

I was pretty happy to see that Pat who made mine has used a good quality (and thick) heat wrap that covers the chip and the gpx plug. The heat rap used on mine looks like it will take a lot of the stress as the shaft is extended

The heat wrap also seems to have shrunk slightly into the grooves of the chip/plug which should also help it slipping off.

Looking at your adapter, the grooves on the chip seem very prominent which to me looks like its a very thin heat wrap or only electrical tape over the plug. I don't think id be relying on electrical tape to give the adapter the strength between the chip and gpx plug that is probably needed

Just my two bobs worth.

GPZ plug...not GPX 😁

But your comment is why I bang on about wrapping it up good with heaps of tape to give it that added extra strength & support. My adapter is so stiff that I can't even flex it.


Best of luck out there

JW 🤠


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      The hole is at the bottom of my coil. The nugget was wedged down in that bedrock which is unfortunately covered in shadows in this photo, and the total depth was just shy of the length of the coil, so around 16-17". There is a new ATV trail almost to the point where I started detecting so I can't help but feel at least 1 person has had a Z14 over this wash, but I'm not certain. This nugget was sitting almost vertical, and I suspect that is why it was missed previously and not a screaming signal on the 17x12, though the signal was definitely sharp and unmistakable. 

      Another 30 minutes of poking and prodding into the rocks and bedrock, and I pulled up a deep drywasher nail and a the head of another nail. Both sharp and loud signals right in the gut of the wash that my 4500/GMT combo had missed 7 or 8 years ago. I was near the start of the wash, thus the end of my journey and thinking it was about time to turn around and hike back down. And then I hit my final target on the short hike, a ~1 grammer which was also a sharp and pronounced signal, and also right beneath a stretch of exposed bedrock. It's at the tip of my finger, didn't have to dig around with the screwdriver for this one.

      Here is the sum total of what I found with about 1 hour of detecting and 1 hour of hiking there and back. This is a wash I detected back in 2012'ish with a range of 4500 coils and my GMT (before I had a GB2), probably 8 or 9 times total. I covered most of the upper portion of the wash that had produced nuggets for me in the past, though I suspect I could pull another 1 or 2 out of there if I tried with the 10". I'm also pretty certain the 10" would have missed the larger, deep nugget, but I can't be absolutely certain.

      Total weight, not bad for an ~hour of work. 

      And one final horizon shot right where the nugget zone starts, up towards the base of the mountain. For all the internet sleuths and greenhorns who can't find anyone to share locations with them to get them started. Good luck.  Enough clues here to find the area for a dedicated individual.
      Overall I was happy with the 17x12 in the rocky wash/bedrock areas. It ran smoother here than Gold Basin, both dealing with ground mineralization and EMI. GB gives me these zips and zaps that are absent here, and struggles with the BIF and basalt, and it's real hard to run this 17x12 full bore in washes there with high black sand concentrations. The magnetite chunks in Q gave me problems but they do with the Z14 and 4500 too, so nothing new there. The main issue I have is the edges seem to not be sensitive enough on this coil compared to the rounds. So while the geometry allows you to push into tight cracks, you aren't always getting full sensitivity in the depths of the cracks as you would with the 10" round. The shape of the area of maximum sensitivity within the coil is odd. A simple sweep often misses subtle targets unless you are over one of the sweet spots, and the sweet spot doesn't appear to just be a smaller ellipse within the elliptical coil, it's some odd shape with hotspots within itself. That sounds confusing, but I have a hard time explaining it better. I think Condor mentioned it already, but pushing/pumping the coil into tight spots over the center of the coil (if possible) often works better to hear the coupling between very tiny or very weak targets to determine if it's good repeatable or ground mineralization. I've been doing this out in the open in the flats in GB too, especially in areas of high mineralization, to determine what is a good target. 
      One thing is certain, in the US it's mostly about knowing where to go, or knowing someone who knows where to go. Or having exclusive access to land. This shows why. This was found in 2 hours, but only because I was lucky enough to start detecting at a time when a lot of people ran their detectors subpar by copying settings off internet forums, allowing me to find a lot of stuff the others missed. Those days are largely gone since the GPZ levels the playing field today. I couldn't walk into a goldfield I've never been to an expect the same results, it was only my knowledge of what and where I found gold in the past that let me do this. So, don't get discouraged if your results are not the same. A new guy would simply just have to hope to stumble on this place by dumb luck since all the leads are gone now, while I can just hike right to it. So maybe this will help someone new find an "old" place. 
      I don't detect as much as I used to these days as I have other projects going, but Al (X manufacturer) sent me this coil for free to try last year, and I figured it'd be nice to do a write up since I wasn't able to run my GPZ on the commercial project I have going due to EMI interference from the CAT 336. The coil performed great here though, and it was nice to just get out and finally do some detecting for fun.

    • By Condor
      I've been getting out for a few hrs 3 or 4 days a week down here in Sunny Yuma, plus a weekend trip to Quartzsite.  My thanks to forum member Will for showing me a new area in the Q where I found the 2 biggest nuggets.  The 17" round X Coil on the GPZ has been my go to set up.  I really like the ergonomics of the 17x12 coil, but the 17" round has really been finding some tiny gold at depth. I lost a few weeks of detecting after my GPZ started losing audio after a few hrs of detecting.  I sent it in to the Detector Doctor and they couldn't duplicate my issue, since then its running fine.  
      I've been detecting the same areas here in Yuma for the past 10 years with the old GPX 4000, the SDC and now the GPZ.  Nuggets are getting pretty hard to find in these hammered areas so I really look for the new edge in detecting.  I'm fond of the Sp01 booster connected directly to the Z then connected to quality earbuds at the booster.  I took some of JP's advice on lowering the volume of the Z, then using the booster to raise it at the earbuds.  What I understood to be JP saying was a high volume on the Z is also amplifying surface mineralization,  creating clutter noise and concealing deep targets.  I'm no expert, but it sounds reasonable so I'm going with it.  I'm thinking the X-Coil  and Sp01 are giving me a new edge on missed gold, maybe.  The concept, nevertheless, keeps me out there plugging away and trying to put that coil over some yellow stuff.  
      I took a separate picture of the tiny gold.  None of them will register individually on my cheapo scale, so I had to group them to get a weight.  Some of these tiny nuggets have come at incredible depths, at least considering their overall weight and audible response with such a large coil.  Probably 3 to 4 inches for most of them.  The 17" round seems to be hottest right between the center windings at about 2 inches off the edge.  Sometimes a side to side sweep on tiny gold loses the signal.  Pushing the coil and center windings at the signal brings them up smartly.  
      Mitchel just seems to be having a run of bad luck on gold with his X Coil, mine has exceeded my expectations especially on really small gold.  

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