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

Changed email? Forgot to update your account with new email address? Need assistance with something else?, click here to go to Find's Support Form and fill out the form.

GBSE 11" DD coil hot spot and sweep speed....

azsh07

azsh07

Member
I was talking with Mr. Bill a little while ago and we both brought up these topics and both had come to the same conclusions.

In testing target responses on the 11"DD coil especially there is definately a hot spot on the coil. The hot spot is not in the center but rather halfway between the center and the toe of the coil....or just forward of center. This holds true on both 11"DD coils I have. Actually seems to make a difference of an inch or so in air testing.

Second is sweep speed which others have mentioned also. Really looks like the best depth is achieved by a very brisk sweep across the target. Both Bill and I have seen a couple inch difference in tests between sweeping slow in the middle of the coil and sweeping very briskly just forward of center.

This may be why some see good depth tests and others see lousy results. There truly is a very noticeable difference in depth when taking in these two factors.

Now if someone was coming from an Explorer or Tesoro they would be used to slower sweep speed and that would hurt them here it would seem.

Keeping that in mind may help people see results similar to what others have said.

Of course that is not to say you have to whip the coil like the older WHites machines to get any results....rather it does help in areas with deeper targets and that are clean of heavy trash to get you an inch or so more in depth.

See what you find and post results...it certainly is true on the several machines I have so I assume it will for others. Especially the coil hot spot..again it is between the middle center of the coil and the toe right down the center line.
 
because on mine, the sweet spot centers where the mold mark is which is dead center of the length of the coil. Agreed on sweep speed and it seems to be just a tad less forgiving than the Greeks "prime sweep speed range" with the same coil.
 
Yes. Mine is a bit off coil center toward the toe.

Maximum depth with a brisk sweep speed is a must. :thumbup:

I think for the majority of users this will go un-noticed, because of the type of hunting they will be doing 90% of the time. With shallow targets, say down to 8", sweep speed may not be a issue.


Mr.Bill
 
n/t
 
and also I have noticed that if a target is a depth or on close to the tone break it can go low tone till you hit the sweet spot...So it is something to remember on some of the softer deeper sounding targets to re-sweep a few times to get the sweet spot over it and it will then high tone....

It's one of the reasons the coil is so good in the iron it is just so dang tight in that one spot...The 5 incher seems to be more consistent down the blade...but the 11 has that little window in there that really can peek around ...

Great coil for sure..

Keith
 
In the video ( my first attempt ever ) you can see how the gold ring buried in the wet, salt sand, hits harder as I sweep the coil faster and how the sweet spot is near the tip of the coil.

Also, I mention that the sound of these deeper targets are repeatable 'ticks' in the audio as opposed to the clearer, harder, louder shallow coins and targets.

I posted the video in this forum.

JC
 
Used with a lot of overlap it seperates like a small coil with the advantage of good depth.

Tom
 
...alot of time Youtube videos run slow in my are due to Comcast overselling bandwidth. Price for living in a small maine town at the end of a street...hah.
 
Hi Brad

I didn't notice it as a variation, as the few I checked all exhibited the same characteristics. :shrug:

I really hadn't given it much thought until I was speaking with Scott. I had mentioned I was doing a bench air test, and had noticed the "sweet spot" was just a little forward of center on the coil. He said he had noticed the same.

Mr. Bill
 
If mine in fact is as I saw it, I was just wondering what could be the factors that would make mine "different" than what you and Scott are seeing. Maybe it's not the coils per se but it's just differing test method(s) and or environment.
 
In my case it's most likely a age factor I'm sure. :rofl:

I really wasn't trying to find that, it was just something I noticed. I was using the 11"DD coil. DD coils are a pain sometimes to do air test with. They like to have the target come at them in a certain angle when air testing. You may be correct, I really wasn't paying close attention. I did learn for certainty, it performs best with a brisk sweep.

It all goes back to the old adage, the importance of pre-testing your new detector before taking it hunting. Users need to learn disc. settings, sweep speed, and all the other different operational things the detector can do before hunting with it. I think that's what Scott was trying to get accross with his post about this.

Later
Mr. Bill

PS: anyone have a Tellecaster with a rosewood fret board they want to trade ?
 
I posted this to say what I and Bill had seen. Others may see a little difference which is not a problem....there are slight differences coil to coil and machine to machine maybe but overall they should test close.

One guy says he gets 13" on a nickel and another guy gets 10". The guy at 10" thinks his machine is bogus and certainly I see why. But....why does he see that?

Well variances in how fast the target is swept and where along the centerline will affect that last few inches quite dramatically. Certainly no affect on coins that are within 8" or so will it make much if any difference...I tried but could not see much within that range...fast...slow..off center ..whatever they were all fine. But at the last 20% or so of it's capability it did make a difference.
SO it was just letting people know what I saw as well as Bill in order to give a person who may not have seen that a chance to get some extra depth response out of the machine.

Of course you can whip that coil like your flogging the monkey and you still will not hit a dime at 13"......!!!!
 
Rosewood is for Les Pauls and Trix is for kids!! :crylol:Now if you can stomach maple, I have an awesome '95 (last of the V1 model run) Tele Plus in Mystic Black which is a fairly rare factory custom color. You might want to do a little research on these Tele Plus's and I think you'll see they are getting highly collectible. I think you'd be surprised and more than pleased with the sound of the Lace Sensors/Maple. If allowed, this link should get ya started.
http://www.tdpri.com/forum/guitar-owners-clubs/143255-telecaster-plus-club.html
Note on page 3 they touch on describing the Mystic Black color
 
Nothing ages like maple.....my buddies 57 strat was unbelievable smooth and had awesome maple aged look.....we used to really drive the neighbor hood Crazy with all our amps cranked and the parties every night......Think goodness i slowed down a wee bit....
 
You must log in or register to reply here.
Top