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Do you like the 10-inch DD, but find it a bit heavy?????

Digger

Digger

Constitutional Patriot
Staff member
I've gotten several emails from folks who really like the depth they get out of their 10-inch DD coils. But don't like the feeling of additional weight out on the end of the rod. Although my moderately mineralized soil does not require the use of DD coils, there are times when I put on the 10-inch DD at 7.5 kHz and wander through an old farmsite. It simply covers more ground with each sweep. With many of yesterday's farmsites being farm fields today, the ground is often rough from tilling the soil. Those of you who hunt this type of turf recognize how tough it is to keep from dragging the larger coils. Especially after you've spent a few hours in the field. The 10-inch DD coil isn't really heavy. But the placement of the "ears" where the rod attaches is quite a ways from the center of the coil. This "rear attachment" gives the user a feeling that the coil is "nose heavy". One suggestion I have offered is to turn the coil around the other direction. In other words, take off the lower rod, twist the rod 180 degrees and reattach the coil. Now, when you look at the coil in the typical fashion, the little button on the spring clip, that sticks out of the hole on the lower rod, will be facing upward instead of down. When you turn the lower rod over and insert it into the middle rod (as designed), your coil will look like it is hanging upside down. Loosen the bolt in the coil and turn the coil so it is in the flat, "ready to hunt" position, with the "ears" more toward the "front" of the coil. Then tighten the bolt as you normally would. (Note that you will probably end up with your lower rod extended a notch or two beyond what is was when the coil was attached "normally") Now, I know this will look awkward, as may even feel awkward at first. But once you get your hand-eye coordination working with this setup, I think you will find the coil is much better balanced and the weight will not be an issue. Oh, by the way, I doubt if it makes any difference with VFLEX. But I run the coil cable straight up the lower rod, tie it down with a couple velcro straps, and then wind it up the middle rod as usual. Like I said, having a short run of cable suspended over the coil shouldn't interfere with the detector. But I leave mine straight so as minimize the exposure. HH Randy
 
When I know that I will be out hunting for 8--10 hours, I use a bungee cord attached below the box on the stem and the other end hooked to a "D" ring on my backpack. I have the bungee adjusted so that you have a sleight down push on the hand grip. When I was in Alaska hunting gold for 10 hours a day, my arm never got tired.
 
I noticed the extra weight of the 10.5 right away, but after a few times of using it, I got used to it. I think it felt heavy at first because the rest of the machine is so light to begin with and I never realized the rod connection was so far from off center. The few times I put the stock coil back on, it seemed very light, and the 6" coil seems like a feather. I always use the arm strap and find that helps balance the weight better. Now if Minelab would make the 10.5 in a slimline coil like the SE, it would be a bit lighter. Ron
 
Good tip, and there's always one of those Swingy Things.
 
the pinpointing does. I can't quite get used to pinpointing with this coil but the depth I get makes me want to use it over the stock coil. HH John
 
I never thought switching coil around, may you could post few photo of different set of coil. The 10.5DD seem an little heavy at first due how light X-70 is overall. Overall I love 10.5Dd for better ground coverage, and little more depth. Even in good soil I can run Sen. just one or number higher then any of my 9 inch coil. For Relic hunting the 10.5 DD is best coil for my typle of hunting. Chuck
 
Great idea Digger. I did basically the same thing with my 10x14 DD Excelerator coil for my MXT, but I didn't think of doing it with my 10.5 DD for my XT-70. A photo of your mod would be nice. HH Dennis in Idaho
 
Pardon the snow, but I hadn't taken a picture of the reversed coil until this morning. As I said, it is a bit awkward looking. And it takes a few swings to get your hand-eye coordination flowing well. But it is better balanced for those long days in the rough terrain. I started doing this to my Explorer 10-5 inch, sometime between my 3rd and 4th surgery! :stretcher: And it seems to even help on the X-Terra. HH Randy
 
Thanks for the photo digger. You are right when you say it looks a little awkward. HH Dennis in Idaho
 
n/t
 
Glad it helps..I may give it a shot...
 
Richard Dodds made some of his machines (Pacemaker for one) with a reversed coil as standard (early 1970's). His later machines went back to the standard design as it seems "fashion" takes priority over comfort to the average buyer.
Eric Foster with his P.I.'s must think the same as he's posted in the past that a square coil is the most efficient design.
 
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