Menu
What's new
Find's Treasure Forums

Welcome to Find's Treasure Forums, Guests!

You are viewing this forums as a guest which limits you to read only status.

Only registered members may post stories, questions, classifieds, reply to other posts, contact other members using built in messaging and use many other features found on these forums.

Why not register and join us today? It's free! (We don't share your email addresses with anyone.) We keep email addresses of our users to protect them and others from bad people posting things they shouldn't.

Click here to register!

Need Support Help?

Cannot log in?, click here to have new password emailed to you

The WOT coil can Theoretically increase finds by 80%

A

Anonymous

Guest
Some people have questioned this statement, but it's easy to explain and not as outlandish as it sounds.
This isn't rocket science. It's simple math.
The key to recovering more items is to process more dirt.
All things being equal, same skill of operator, same number of targets to recover,
Operator A uses a 10 inch coil.
Operator B uses a 15 inch WOT coil.
First swing by both operators
Operator B just increased his chance of finding a target over operator A by 50% because he covered 50% more ground with one swing than did operator A.
Think about it.
Let's assume that operator A and B hunt 8 hours and find nothing.
In order for Operator A to have covered the same amount of ground operator B did with his WOT coil in 8 hours, operator A would have had to swing that detector with a 10 inch coil another 4 hours.
So far we have only talked about coverage. We have not even talked about the additional depth the WOT coil gives you. Quarters at 16 to 18 inches are normal for the WOT coil.
An increase of 30% more depth is a very conservative estimate, but let's get ultra conservative and say the WOT only gets an increase of 20% over the stock coil in terms of depth.
Look at the following picture which is drawn to scale.
<CENTER><img src="http://kamakazi.com/forum/wotcov.jpg" alt="" /></CENTER>
So when I say theoretically you are going to dig 80% more targets that is not pie in the sky. When you are processing 92% more dirt, you are going to find 92% more targets if the targets are there.
Now granted the more targets you find, the more targets you have to dig, and that takes time. But numbers don't lie and the people using the WOT, can tell you, their finds don't lie either.
The recovery increase is affected by other things, such as the fact that targets are not evenly distributed. But regardless of that, if targets were evenly distributed, the WOT coil would recover 92% more of them, than a 10 inch coil, given the same amount of time of detecting.
Take care! And don't ever question my math skills again! <img src="/metal/html/lol.gif" border=0 width=15 height=15 alt=":lol">
DOC
 
I'm going to get one!!!!!!!!!!!
You will see my finds start showing up before to long.........Aaron
 
It is a theory and like so many does not consider variables such as co-located targets and others but none the less makes a good point for finding more targets. I have believed for several years that the technology used is not going to go much deeper on targets unless it is with a better coil or larger one.
<span style="background-color:#ffff00;">The comlexity of an electromagnetic field expanding around the search head is about where it is going other than for better and more effective coils.</span> I think we all know that it is in the receiver circuits that depth is obtained unless you have a larger coil, more effective way to penetrate the soil matrix with the field. I read a very interesting post by an engineer, MattR in the UK, that stated only about 20%, if I recall correctly, of the coil's effectiveness is actually achieved by most users. I am not sure how he arrived at that but when you consider the need to get good penetration of the target by eddy currents it sounded good.
Although I really find the 8" size coils to be ideal for my style of hunting in heavy trash I do look forwared to the reports on the new coil. Those old public parks and other area need better trash elimination while still detecting good targets and greater depth for those long missed coins just an inche or less out of reach of the current coils.
I am also a Minelab dealer but deal with the folks at the university I retired from so don't get into national sales. Gus and all the others have been very helpful and provided excellent service. I think Gus and I have talked at times for an hour or so about how the detector works and when I was first interested in a dealership sent me a copy of a very good book by Andy on the Explorer series. As a retired professor of electronics engineering I have read the patents in depth and Minelab has a truly unique detector with the most effective discrimination, ground elimination, and depth of any I have used and tested. They are good folks and I hated to see them kicked around by one or two guys that go from forum to forum creating some kind of bad feeling over just about anything and frankly I thought for a long time they were just kids playing hooky from school. I don't expect a public forum to be perfect but some of that bad language and attitudes were really out of hand. The forums are a great service to the hobby and I really hated to see all the problem from just a few guys. I have received dozens of emails from people that don't post to the forums due to being attacked by the very same guys. Since they are now banned I shall give this another go.
HH, Cody
 
As a technically challenged <img src="/metal/html/lol.gif" border=0 width=15 height=15 alt=":lol"> lay person who recently purchased the WOT coil, I think it is necessary to mention something in particular. In your rush to get the deepest seeking coil available for your Explorer, I think you have to define what kind of hunting you primarily are involved in. If you are a beach hunter, I think this would be the PERFECT addition to the Explorer. Of course I can't say that out of experience, since I am landlocked here in Kansas. Or if you are a CW relic hunter covering vast amounts of otherwise sparsely used fields, this would be EXCELLENT for that application. (I hate all of you who live close to those sites <img src="/metal/html/lol.gif" border=0 width=15 height=15 alt=":lol"> ) More coverage, deeper detection, sounds great to me if you are searching vast areas of ground. However, if your primary application is going to be hunting trashy parks, where there is trash with about every pass you make with the smaller stock coil you already have, you need to be realistic in your expectations. The amount of information that the Explorer is trying to process, is going to be multiplied by the number of additional targets it is passing over with the increased coverage. Until I become adapt at running iron mask close to wide open with good and regular success, which I am no where close to that yet, I don't think I can expect the WOT to do anything but drive me nuts in those conditions. Please don't think I am critizing your product DOC, because I certaintly am not. I am looking forward to using it in the applications it will BEST perform in. But I have heard others talk about how the WOT was able to look beyond the trash, and detect many silvers on edge. I have absoulutely no doubt about the validity of that statement, but I can tell you that I can bet it will take quite some time and experience before I am able to replicate that feat! Hats off to those who are able to perform such wizardry with their WOT coil!!! Now, before everybody jumps on me, let me qualify my opinion with this statement. I consider myself just one of the many average users of this amazing detector. But I just don't want somebody who is scoring nice finds with the stock or smaller coils in trashy parks, to think they will improve immediately upon their finds with the WOT under THOSE conditions. If you don't run your machine in iron mask, prepare for continual nulling which will in alot of cases keep you from reaching the DEEP coins. Just I.M.H.O. of course. <img src="/metal/html/biggrin.gif" border=0 width=15 height=15 alt=":D">
 
No doubt about it, the WOT will excel in certain terrain, but that is a function of operator expertise, not the WOT coil.
Blasphemer !
I use my WOT coil everywhere. And yes, in extremely trashy conditions you can make your life much easier by using one of the many other coils available. I whole heartedly endorse the SunRay line of coils, they are excellent.
However, as I demonstrated for dealers at the last two Minelab dealer seminars, the WOT is easily converted to a narrow search coil capable of discriminating between items within 3 inches of each other by simply rolling your wrist to the right.
By rolling your wrist to the right, if you are right handed, you tip the coil up on edge. With the coil at almost 90 degrees to the ground and using only the edge of the coil, right aroun the 10 o'clock position, you can easily pinpoint individual targets.
There are experienced WOT users out there that use nothing but the WOT coil and watching them use it is like poetry in motion. They know every trick in the book.
Your comments are accurate but they actually have nothing to do with the theoretical increase in finds that I have demonstrated with my excellent technical illustration. <img src="/metal/html/lol.gif" border=0 width=15 height=15 alt=":lol"> (I'm saying that tongue in cheek in case you didn't know.)
Thanks!
DOC
 
What's to understand Charles ? You're jerking me around! Dude, you built your own vacuum forming machine, experimented with your own monster coils, you know theory, your just yanking my chain.
It's theoretical.
Lets say you and I are in a field where there is a line of targets spaced evenly every 5 inches.
Let's say we have someone digging for us, and our machine magically places a orange dot where to dig.
We are required to make one swing to the left and one back to the left, each time a bell is rung, which will be every 30 seconds.
We then may move forward precisely the length of the coil to make the next swing on the sound of the bell.
I have a WOT coil, you have a 10 inch coil.
Bell rings. First swing, my machine marks three targets, yours marks two. I move ahead 15 inches, you move ahead 10.
Next swing I mark three you mark two.
After 30 minutes. I have traveled 60 swings times 15 inches or 75 feet and have marked 180 targets.
In 30 minutes you have traveled 50 feet, and have marked 100 targets.
And this is assuming that all targets are at equal depth and not beyond the range of the 10 inch coil.
Take care!
DOC
 
Doc your theory would prove reliable for example on a beach or a particular site condition suited to the theory. I have one such site that I spent 4 months picking clean with the WOT. That site gave up about 1 coin per 50 feet and the targets were very deep. It was an ideal WOT site and I netted several hundred old coins there but as a site condition it was rare in its make up.
That said your theory would fail at many other sites I hunt where going slow and picking between the iron and trash yields more coins per hour than covering lots of ground.
All I'm saying is that people should not expect the WOT to out perform the stock coil in every or even most site conditions. In some areas the Minelab 8 inch coil rules, leaving the stock and WOT coils in the dust. Other sites the stock coil is ideal, and at some sites the WOT is king.
But if peoples expecations are that on average if they put the WOT on their finds will increase 80% they may be disapointed because it is site dependent.
Expectations are a tricky thing, properly set people will be successful and happy. I remember a guy who purchased a WOT last year and was having zero luck with the coil, he was not happy with his purchase but that was only because he had incorrect expectations of the coil. He was hunting an area where there was lots of iron and the ground conditions were sopping wet. That is not a condition favorable to the WOT. Its no reflection on the coil mind you, thats just reality for large coils. I told him to put his stock coil back on and wait until the ground dried out, that will shut up the iron, then go troll for the deep ones with the WOT, he did and was a happy WOT owner soon after.
Now if any spectators are confused as to my position on the WOT, I maintain as I always have that the WOT is a fantastic coil. Digging up a really deep target the likes the stock coil only dreams of locking onto is great fun and it WILL get targets the stock coil cannot.
 
What appears to be correct is that a larger coil will allow one to cover 80% more area for a given amount of time. This seems to hold better rather than "find 80% more targets in the said amount of time". Being that there is a finite amount of targets in a site, an absolute, which cannot be increased by simply increasing the amount of area covered.
Overall, I own a WOT and it hunts real deep. I'm happy with it.
 
Got one and love it,hits hard on the deep ones pinpoints good and gives you a good feeling that you can get the good old items. <img src="/metal/html/smile.gif" border=0 width=15 height=15 alt=":)">
 
And yes, Charles you are correct, but now we are not talking theoretcal recovery we are talking real life conditions and in trashy areas, someone with a small coil may very well be able to cherry pick the good stuff quicker from between the trash.
I think the discussion just shows why people own more than one coil, because there are uses for different coils depending on the conditions.
take care!
DOC
 
You must log in or register to reply here.
Top