Thanks to Davesgold and the X-Coil manufacturer, I got a gifted 17x12 Spiral Wound coil. The manufacturer took notice of my multitude of problems with the connector modification and sent me a new coil from Russia. Bravo Zulu X-Coil for prospector support. The weather has improved here in Sunny Yuma so I replaced the 17" round with the new coil and took it for a spin. I balanced it over the ferrite with no problems and I experienced no bump sensitivity.
The first thing I noticed is how well the coil balances on my modified hip stick rig. I do a lot of detecting in the walls of desert washes, putting the coil on its side. The 7000 tends to get the "wee waas" if you don't keep them flat, but this coil seemed to really tone it down and it balanced really nice for less strain on my arm and shoulder. On relatively flat ground I think I could swing this coil all day for less wear and tear on my 65 yr old frame. I ultimately didn't find anything in the walls, but I hit some old hillside drywash tailings and popped these 3 nuggets. All were at moderate depths but I was amazed at some of the deep iron bits I found. Without some side by side target comparisons I can't say that my depth is improved, but I'm getting a lot better ground coverage and I can poke it in between rocks and obstructions. Even if this coil is no better than the original Minelab 14", it's a lot more versatile. This will be my go to coil from here on. I'll stick the 17" round on over worked out patches, but this is my new secret weapon.
Again, many thanks to Davesgold and X-Coil
I did the Minelab cable cutting and soldering differently than specified by the manufacturer.
Instead of cutting the cable near the Minelab connector I cut it below the Minelab curled cord and installed the 5 pin connector at that location.
After the connector was installed and marine grade shrink tubing was applied a plastic tie wrap was attached with another piece of shrink tubing. This is used to pull the cable out of the lower end of the upper shaft since the Minelab curled cord retracts it out of reach.
I then used a heat gun to soften and straighten approximately 8 inches of the lower X Coil curled cord. Cut it at that point and attached a new connector at 8” above the lower shaft.
I have all three X Coils setup with three new lower shafts attached. This modification allows quick easy change of coils in couple of minutes.
It is reasonable to be concerned about interference from the two connectors being located so close to the coil. This is not a problem since the detector only detects motion change relative to the coil.
A simple experiment will demonstrate how the detector nulls out metal that is not changing position relative to the coil.
Place a small test target on the ground with an aluminum soda or beer can about 2 feet from it. Swing the detector over the small test target. You will only hear the response from the large can.
Now tape the can on top of the detector shaft 2 feet from the center of the coil. Now swing the coil over the test target and it will be detected.
With the can attached the detector it will sound off as you lift and lower the detector to the ground since the coil is remaining flat while the shaft and can are changing position relative to the coil.
In normal detecting when setting the detector down or lifting it I hear this sound-off with the 17” x 12” coil but not with the 10” or the 17” round coils.
There is no effect during normal detecting since the coil is not tilting or changing position relative to the shaft.
Have a good day,
I have just come out of a magic winter season with the 10,12,15 X coils, I have not used my ML14 or 19 since putting them on. The X coils have made the Magic GPZ7000 a super magic detector. No teething problems, make patch lead, fit and dig gold. How good is that??? Can only say it doesn`t get any better...……...or does it. What will the X coils evolve into ?????????
I have no connection to X coil, or to Davsgold except as a customer, top coils, top service and express freight.
A package I've been very much looking forward to arrived in the mail today, I call them the twins. It made sense to package them both in one package for postage reasons and fortunately JW was working doing some renovations at his house around the corner from mine today so he had his a few minutes after the courier arrived at my place with the package as I shot straight over to give it to him.
I tore the box open to find them extremely well packaged
And now the twins
15x10 spiral wound X-coils, one for the GPZ, one for the GPX. The GPZ's coils curly cord seems good to me.
They came with a spare coil cover. This is obviously the GPZ coil.
And the GPX one.
Hopefully I can find some gold soon with it, I've on a dry spell at the moment, although the football field of coins has kept me busy. It's been about a month since I've attempted to find gold as my weekends are filled with skiing as my daughter is addicted to it and my week days have been busy doing the local coin hunting, now this coil has arrived I best get out there soon. It snowed yesterday and today there is a freezing wind blowing off the snow, if it wasn't for that I'd be shooting off now to test it out. Only about 2 weeks left of ski season.
JW's been doing pretty well lately with his 10x9" X-coil and he rarely takes it off he loves it so much so it will be interesting to see how he goes with this new one being spiral (flat wound) when his 10x9" is bundle wound.
I got my GPZ back from Minelab last month, which included a new 14" coil and lower rod. Only $3600.00 AUD lighter in my wallet. As you may recall, I bricked the detector after the Patch Lead was defective. It's still crazy hot here in Sunny Yuma, but I was bored and still curious about the X-Coil, so I shook off my concerns and cut the connector off my brand new coil and built the Patch Lead myself. I was extra careful with the heat from the soldering iron and did a respectable job of putting together the connection. I did a few practice runs on scrap wire and connectors so I was a little more confident of my skill.
I got out 5 mornings last week for a total of about 12 hrs run time. At sunup the morning temps were still in the high 80's and jumping to 100 by 9:00am. Unbearable in the desert washes with no breeze. The one thing that saved me was the synthetic chamois cooling cloths, one around my neck and one under my cap hanging down my neck.
The first morning I did a complete set-up with the detector since it was, for all practical purposes, a brand new machine with all new printed circuits etc. I waved the 17" X-Coil over the ferrite and got the machine nearly silent, though still reacting some to the ferrite. I started in the area where I found the 28 gram rippa last May. This area has a fairly hot layer of clay about 12" under the overburden. Last May we were able to run this zone using HY, Normal, Sens 12, (Threshold 27) with the Patch Search mode to quiet down the machine. The 17" X-Coil in those same settings was way too sensitive, so I had to switch to Difficult to quiet it down. Because I knew I could only be out for a couple hrs, I focused on trying to get that coil over gold hoping to then play with the settings. No joy the first morning.
The next morning I went out to an area that had produced half a dozen 1 grammers when the GPZ first came out. I knew it was deeper and a little quieter ground. We tried Paul's 19" GPZ here when it first came out to no avail. This time I was able to zero out the Ferrite and switch back to Normal from the Difficult setting. The machine was still a little twitchy so I backed off the Threshold to 22 and got it humming along nicely. I gridded the area pretty good and came up with a few deep trash targets and then, right as it started to get unbearable hot, I got a faint, sweet rising tone. A lot of digging and sweating produced a sweet 4 grammer right on the hardpack, about 14 inches down. Now a 4 grammer at 14 inches should be well within the range of the GPZ and standard 14" coil, but I've been over that zone at least 6 times over the past 3 years. The only significant difference is the ground is bone dry this year. Last year there were still pools of water from late season rains.
The next morning I was back to the area of the 28 grammer. I found that the machine was more stable and I could run in Gen, Normal, Sens 14. I got a couple deep trash targets and chased a number of hot ground seams and hot rocks. The settings were really sensitive to hot ground, but in my mind that's the only way to find good missed targets. Right at the end of the morning I got what sounded like another bit of hot ground. I switched to High Yield from General and it brightened up the target, but still hadn't convinced me that it was gold. The target was in the sidewall of a drywasher's hole, so the 17" coil was pretty awkward. I dug out the ground so that I could get the coil level and the target brightened up a little more. By then I had hit the hardpack which tends to hide these small, reddish hotrocks. I dug dozens in this same area, but I needed to check this coil's capabilities. The hardpack was brutal in the morning sun so I had to go back to the truck and get my handy Aussie (DavesGold) made pick. I'm not going out without it now. About 8 inches into the hardpack out popped a nice 1.5 grammer. I can guarantee I stuck the GPZ standard coil in the hole a half a dozen times over the past 2 years.
Thur morning I got out in the same area. I chose a wash that a produced 5 small nuggets, in the sub-sub gram range, in May. I concentrated on the deepest gravels thinking deeper nuggets must be in there, just beyond the reach of the 14" coil. I gridded the zone where a bench had formed on the inside bend of the wash. I went at it from every angle and was about to surrender to the heat when I got the faintest of faint tones. Again I switched to High Yield and it brightened up some. I switched to Difficult, nothing. I started pulling down the bank so that I could get a good level swing with the 17" coil. Slightly improved tone, still unconvincing. I pulled down another few inches and got a much improved tone. I switched to Difficult and got a dull growl, more convincing yet. After much digging into the hardpack out came a nice 1.8 grammer. I even photographed the hole for this one. The Aussie pick is 28" long.
I'm really starting to like this coil. It's light enough for all day use with the addition of my homemade hipstick. I run the hipstick to the bottom of the frame in my lightweight framepack, which moves the weight to the back of the hipbelt and off my shoulder. I'm also running the SteelPhase amp plugged directly into the GPZ, no wireless connection between. As per some of JP's guidance, I'm running the GPZ volume at 2, adjusting loudness at the amp. I'm running the Threshold between 20 and 22 depending on how twitchy the ground is. For the most part I'm running General instead of High Yield trying to reach those deeper targets. The first 2 targets were well within the reach of the standard 14" coil, but somehow I didn't find them over the past 2 years. The last one, doubtful for the standard coil. As the weather cools I'll start doing a quick change to the 14" coil over new targets for a comparison. Right now, it's still to friggin hot to bother.