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Well some information on the 15inch coil..........
- Thread starter Bud-sc
- Start date
MAKRO RACER POWER
New member
Ohhh my god .. Its very long time offffff . why why why
innochio
Grumpyolddiver
New member
Well....... Look at it this way...
Ya Won't Need it when your gone.
Grumpy
Ya Won't Need it when your gone.
Grumpy
Charles (Upstate NY)
Well-known member
How are people planning to use the 15x12 and for what purpose?
Charles (Upstate NY)
Well-known member
There may be a use for a 15x12 coil, but I don't think its suited for either of those purposes. Having used a 15 inch WOT coil extensively on Explorers here's my 2 cents worth on this...
DEPTH - First do you even need more depth than the 11 inch coil already gives you for coin or jewelry hunting? I say no. I just completed a first round of air tests on a EQ800 of 70 targets from the 1700's to early 1900's. The depth I saw the 11 inch coil get is mind blowing. Its smacking a worn seated half dime at 12+ inches. In an Explorer Se Pro's wildness dreams it would never come close to that. And that's with only mild bumps up from the factory defaults, Park 1, sensitivity 22, recovery speed 3, Multi, and 50 tones.
This machine runs really HOT. Forget flat coins lets talk straight up on edge coins brutal targets that are invisible to an Se Pro, my EQ800 is smacking those at 8 inches holy crap. It didn't matter what I threw at it, half dimes, 3 cent silvers, very thin womens gold band rings, straight up on edge, SMACK!! The 15 WOT coil had a real knack for nailing somewhat on edge coins at depth, tipped maybe 45 degrees but I can't ever recall digging a straight up on edge coin with it. This EQ800 and its coil, its murdering the flat face of a straight up on edge coin with signal. I can see this when testing on edge coins vs on edge rings which are hollow compared to the flat surface of the on edge coin. The EQ loves on edge. Then there's tiny gold that's invisible to an SE Pro even if its rubbed on the coil the EQ800 is getting a hit in Beach 1. Not super depth on this tiny gold but I'm amazed it gets any signal.
Okay so a HOT machine and a HOT 11 inch coil that's hitting on small targets at great depths with accurate TID's. Now add another 4 inches of coil length and an inch of coil width to this mix with a 12x15 inch coil, its going to bite off that much more mineralized soil and that's where the more depth idea begins to fall apart. The 11 inch coil already this hot at this depth, which likely would need to be backed off in more mineralized soil, the 12x15 would have to back off even more and when you do that there goes the increase in depth you thought you would achieve. Now if a 12x15 can punch through even deeper without the mineralization forcing settings lower I'll be altogether impressed but this seems unlikely. I think for depth the 12x15 maybe suited more for relic hunting of larger relics, belt buckles, cannon balls larger targets. But for coins and jewelry I have my doubts.
Finally on depth what is more important in achieving depth from a coil, its width or its length? The answer is its width. You can build a 24 inch long coil that's only 6 inches wide, depth will be about what a 6 inch coil can get. Sure more coverage per swing but its the coils width that largely is responsible for depth and the 12 x 15 is only 1 inch wider than the stock 11 inch coil. So its kind of the worst design for depth on coins and jewelry. It bites off 4 more inches of soil mineralization in center of the coil which is the hottest zone, but only 1 inch more coil width. If I were looking for max depth on coins and jewelry I'd want a 15 inch wide coil that's 11 inches long.
BEACH okay more coverage per swing. Again I have used a 15 inch coil on a beach. Minelab has really taken coil design and construction to an art form. I have built Explorer coils. Their current 11 inch coil is a work of art. About as slim and light yet durable and rigid as is possible. But there's still some weight to the coil and big coils will be even heavier. Again to the design the 12x15 is adding 4 more inches of weight in the heaviest part of the coil, down the center. Its that much more epoxy and coil shell and when it comes to coils just a few ounces makes a difference when its way out on the end of the detector shaft. More coverage per swing IS and advantage on a beach, but if your arm is wiped out after an hour you really did not accomplish anything.
Remember on wet saltwater sand, you can't touch the coil to the sand you have to swing it just hovering above the wet sand but not touching otherwise it will false. Also if the coil tips up at an angle at the end of your swing again it will false. So there's no rest for your arm you have to control it, keep it flat, hovering close and the 11 inch coil is about perfect for this. A large coil is more effort to control, you must swing it slower so it doesn't build up too much momentum at the end of your swing so you can get the queen marry coil swinging back the opposite direction. Ultimately while it has more coverage per swing, I don't think you will cover more ground per hour vs the 11 inch, and there's the added fatigue of the large coil. On an Explorer it was worth it because a 15 WOT definitely went deeper on that machine. On the Equinox, I'm not so sure.
And back to the Equinox being a HOT machine yes Beach 1 works on the wet saltwater sand, but from what people are saying its running hot and angry, its no whisper quiet super stable Excalibur. I like that its running HOT, but if I throw a big 12x15 coil on it I have to wonder if its even going to work on wet saltwater sand without having to back off the settings. And if I do that poof there goes the small gold.
Its not my intention to pour cold water on people's thirst for a large coil, been there done that, and if we were talking about an Se Pro I'd favor a large coil. But for this Equinox I'm not so sure. There you go food for thought.
DEPTH - First do you even need more depth than the 11 inch coil already gives you for coin or jewelry hunting? I say no. I just completed a first round of air tests on a EQ800 of 70 targets from the 1700's to early 1900's. The depth I saw the 11 inch coil get is mind blowing. Its smacking a worn seated half dime at 12+ inches. In an Explorer Se Pro's wildness dreams it would never come close to that. And that's with only mild bumps up from the factory defaults, Park 1, sensitivity 22, recovery speed 3, Multi, and 50 tones.
This machine runs really HOT. Forget flat coins lets talk straight up on edge coins brutal targets that are invisible to an Se Pro, my EQ800 is smacking those at 8 inches holy crap. It didn't matter what I threw at it, half dimes, 3 cent silvers, very thin womens gold band rings, straight up on edge, SMACK!! The 15 WOT coil had a real knack for nailing somewhat on edge coins at depth, tipped maybe 45 degrees but I can't ever recall digging a straight up on edge coin with it. This EQ800 and its coil, its murdering the flat face of a straight up on edge coin with signal. I can see this when testing on edge coins vs on edge rings which are hollow compared to the flat surface of the on edge coin. The EQ loves on edge. Then there's tiny gold that's invisible to an SE Pro even if its rubbed on the coil the EQ800 is getting a hit in Beach 1. Not super depth on this tiny gold but I'm amazed it gets any signal.
Okay so a HOT machine and a HOT 11 inch coil that's hitting on small targets at great depths with accurate TID's. Now add another 4 inches of coil length and an inch of coil width to this mix with a 12x15 inch coil, its going to bite off that much more mineralized soil and that's where the more depth idea begins to fall apart. The 11 inch coil already this hot at this depth, which likely would need to be backed off in more mineralized soil, the 12x15 would have to back off even more and when you do that there goes the increase in depth you thought you would achieve. Now if a 12x15 can punch through even deeper without the mineralization forcing settings lower I'll be altogether impressed but this seems unlikely. I think for depth the 12x15 maybe suited more for relic hunting of larger relics, belt buckles, cannon balls larger targets. But for coins and jewelry I have my doubts.
Finally on depth what is more important in achieving depth from a coil, its width or its length? The answer is its width. You can build a 24 inch long coil that's only 6 inches wide, depth will be about what a 6 inch coil can get. Sure more coverage per swing but its the coils width that largely is responsible for depth and the 12 x 15 is only 1 inch wider than the stock 11 inch coil. So its kind of the worst design for depth on coins and jewelry. It bites off 4 more inches of soil mineralization in center of the coil which is the hottest zone, but only 1 inch more coil width. If I were looking for max depth on coins and jewelry I'd want a 15 inch wide coil that's 11 inches long.
BEACH okay more coverage per swing. Again I have used a 15 inch coil on a beach. Minelab has really taken coil design and construction to an art form. I have built Explorer coils. Their current 11 inch coil is a work of art. About as slim and light yet durable and rigid as is possible. But there's still some weight to the coil and big coils will be even heavier. Again to the design the 12x15 is adding 4 more inches of weight in the heaviest part of the coil, down the center. Its that much more epoxy and coil shell and when it comes to coils just a few ounces makes a difference when its way out on the end of the detector shaft. More coverage per swing IS and advantage on a beach, but if your arm is wiped out after an hour you really did not accomplish anything.
Remember on wet saltwater sand, you can't touch the coil to the sand you have to swing it just hovering above the wet sand but not touching otherwise it will false. Also if the coil tips up at an angle at the end of your swing again it will false. So there's no rest for your arm you have to control it, keep it flat, hovering close and the 11 inch coil is about perfect for this. A large coil is more effort to control, you must swing it slower so it doesn't build up too much momentum at the end of your swing so you can get the queen marry coil swinging back the opposite direction. Ultimately while it has more coverage per swing, I don't think you will cover more ground per hour vs the 11 inch, and there's the added fatigue of the large coil. On an Explorer it was worth it because a 15 WOT definitely went deeper on that machine. On the Equinox, I'm not so sure.
And back to the Equinox being a HOT machine yes Beach 1 works on the wet saltwater sand, but from what people are saying its running hot and angry, its no whisper quiet super stable Excalibur. I like that its running HOT, but if I throw a big 12x15 coil on it I have to wonder if its even going to work on wet saltwater sand without having to back off the settings. And if I do that poof there goes the small gold.
Its not my intention to pour cold water on people's thirst for a large coil, been there done that, and if we were talking about an Se Pro I'd favor a large coil. But for this Equinox I'm not so sure. There you go food for thought.
Bayard said:
dewcon4414
Well-known member
Charles....... we may get more depth just because it could be less sensitive to the small/tiny targets the standard gets. Its been my experience....... near or in the water by time you tune them properly to the salt water they arent much better than the standard coils. BUT..... they do offer more/better coverage and over lap. I suspect thou if its as heavy as it looks and the way the Nox is nose heavy....... you best hang on to or order one of those swingy thingies.
dewcon4414
Well-known member
I agree the stock shaft just isnt going to work in the water with the large coil. Might have been able to reduce the weight by reducing that 12" to 6 or 8". I like a narrow footprint coil....... yet we dont have many for water use. I think the time and effort required to use the coil in the water plus reduced sensitivity in the salt water isnt going to give it the advantage over the standard out there. Overlap might be better.... but you would make that up with the ability to move the standard faster.
