I'm doing a seperate thread on the Tesoro shake...Here it is!

[Darkflight]

I had a few Q's on how this works. Instead of responding in a diffrent thread I'd start a new one and try to make it as concise as possible.I just read about this on Troy's website & found it very effective. Make sure to read his guide on the X2 linked below.

You can demonstrate this on a air test. Just wave various targets in front of the coil within the normal range (4" or so). Do a slow sweep at 1st. Then speed up the sweep-keeping it even as if you were sweeping the coil flat over the target in the ground-speed up. TRY to make the target break up. Its nearly impossible with good targets. Try it with a bottlecap or foil piece. You'll see what I mean. It doesn't take into account all the variables but it gives you a good idea of what the "rattle" of a good target sounds like.Smaller targets can be made to break up more than large-A thin ring or stud earing won't pass this test-use the "hover" technique I mention below if you are in a area such targets may be present. Also-of course it is not foolproof. The more you use it the better it will work for you but digging everything within reason is the only way to learn exactly whats in the ground.

If others with non u-max models want to chime in please do as I have no experience with those. I'm not sure if this works on anything other than my Troy X2 &Silver U-max.This is a re-post below but I added some details I missed.
http://www.findmall.com/read.php?17,1336462

"The 1st technique I call the Tesoro Shake. I learned about it here...
http://www.troycustomdetectors.com/shadowtips/x2-pinpointing.html

Shaking the coil works very well to separate the can slaw,foil & bottle caps with a fair degree of success. Of course too many variables to be foolproof-but once learned it is vital to digging more good targets.

Here's how I go about it for "searching" or fast walk detecting.
I try to sweep at a minor overlap at least. As I run my detector as hot as I can stand when searching I rarely miss side targets as they sound off slightly.

Any sound from a target & I do a quick sweep to locate. At the same time I try & discern if the discrimination is working IE is the tone breaking or off at all. Then I sweep from all angles fairly fast to size the target as always listening to the response. A solid target-coin or ring-will tend to be "solid" sounding. If it is a small target shaking the coil will tell you if it may be junk or not. Caps almost always chirp when doing a fast sweep & foil & small can slaw will break up. If I suspect a small target ( a stud for example) I can "Rattle" the target when hovering on it-As the quality metals stay solid when you shake the coil.

Speaking of "quality" metals. Another part of the language I'm learning are the "soft" or vague-targets that pinpoint small. Usually these are coins that are dissolving. You can hear the spread of minerals from the coin breaking down. Especially zincs but nickles & any clad will do it . Takes a while to recognize it but it is definitely there.Cans & large can slaw tend to sound bright or higher in tone slightly. Of course when sweeping the target sizing it is important. If the target continues more than a few inches I'd suspect something large.Use the pinpoint button or all metal to outline it. I'd rather be fooled than miss a large coin spill-so try a fast sweep over the larger target & see if the target seperates-sometimes individual coins will ring out sperate at a higher sweep speed.

Gold,silver tend to ring solid & cut off at exact discrimination points. The dissolving coins kinda smear out over a wider range of discrimination. Rust also can be anywhere in the range & always bites my butt when I'm cranked up looking for small / deep targets. Oh well!.If I have multiple targets(coin spill or crowded targets) I turn up my disc & take out the highest 1st,then dial back my discrimination back till I run out of targets.

Then there is the slow search in a trashy area. Easy with disc but when you want to get all the goodies the shake technique really comes into play. You can "hover" over the area & pick out the solid tones from unstable ones. If you can "rattle" the target its likely a coin in the trash or a ring/tab type target. Cuts out a good chunk of the foil & can slaw. Rusty bottle caps will sneak through at times-also the screw on wine-O-caps will always ring solid & high.

Then there are the fresh water beach & river areas. I never get there 1st so I have to rely on small targets others pass by. Both my machines have been modified to allow the ground balance to be adjusted for various coils. I also can use it to "pump up the volume" so to speak. Its an annoying way to hunt & I haven't had nightmares from it-yet!. But the good targets hidden under hot rocks are there waiting. But it takes a a lot of feedback noise & hovering over suspected targets to pull out some aces.Try the area where the "hotties" sunbathe. Lotta small studs & split toe rings etc.A gold machine would work well here also where others would walk right past these small valuable targets.

I have to say the best thing I ever did is start digging it all within reason. In doing so I learned the language of my machine so I could make better educated decisions. I also got my 1st gold & then more!. Its a rush every time & makes the pull tabs worthwhile.

 

[Craig]

Great Post again

 

[ToddB64]

Hi Darkflight !

Great post !

With reference to my post (copied below), I think you have answered my question regarding what type of shake you are referring to, that being a normal lateral side-to-side, back and forth. scanning motion, with the coil parallel to the ground, but the length of the scan from left to right is much shorter and the motion is faster. I did a bench test with my Tesoro Bandido II uMax with the standard 8" dia. brown "donut" coil, in Disc mode, using my 14K gold wedding ring as the target and it made the "rattle" sound, like a marble in a spray paint can, just like you said. I then tried several trash targets for comparison and the response signal tones were not solid or repeatable like the gold.

Thanks much ! I'll be trying out the "Tesoro shake" on my next hunt.

Todd
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Re: I have the 10X12, 7" coencentric & had a 5.75-along with the brown 8"
Posted by: ToddB64 [ Send a Message ]
Date: November 17, 2010 11:46PM Registered: 3 years ago
Posts: 130

Hi Darkflight

Very interesting post !

The #1 thing to learn with the Silver & other Tesoro's is the "Tesoro shake". When a target is located & sized- do a quick shake of the coil over the target.If the target stays solid dig. If it breaks up it could be just a small target but more likely it is trash or a bottlecap. It works with the stock coil but with the 10 x 12 & the 7" it is very noticeable.

Re your above paragraph, could you describe the "Tesoro shake" with a little more detail ? I know you said "shake", but one can shake something in different ways, i.e. laterally East to West, up and down and wobble motion, just to name a few. By "wobble", I am referring to tilting the right edge of the coil down toward the ground a few degrees, then the left edge, etc., etc. and done fairly fast, but not to the point of causing injury to any part of the metal detector.

Thanks......................Todd

 

[Ism]

I thought it was something you caught from not detecting for a few days.

 

[ToddB64]

I thought it was something you caught from not detecting for a few days.

}}}} ha, ha, ha.........Yeah, wouldn't that be neat ! We could just say to the wife, "Honey, I've got the shakes again.....I better go to the park for awhile" and there would be nooooo argument.

ToddB64

 

[Darkflight]

I was asked about this so I figured I'd kick it back up-Thanks!

 

[hatpin]

Theres a lot of new tesoro users like myself here. So Im bumping this for them.

 

[Bucksport]

Very good info here Darkflight.

 

[slingshot]

Believe it or not, there's the "power ground balance" test. By pumping the coil up and down over the target, the same thing will happen-but not as reliable. When I was in competition hunts, I used min. disc. and did this over the target. Foil and other bad targets would break up. It only took a quick downstroke right over the target.

 

[kirk01]

Does anyone have much luck with the Tesoro shake using their Vaquero?

Works OK with my Silver uMax, but not so well with my newly acquired V (only had a month, still learning the machine)

Good Hunting

Denny

 

[REVIER]

Does anyone have much luck with the Tesoro shake using their Vaquero?

Works OK with my Silver uMax, but not so well with my newly acquired V (only had a month, still learning the machine)

Good Hunting

Denny

Hit or miss...and it depends on the coil.

With my 10X12 DD, pop tops sound great all around, some foil, tabs and other trash does break up, but not all the time.
Discrimination with the standard concentric coil is better, more trash targets will be affected by the shake method, but again, not all the time.
Hitting targets from different angles will sometimes produce different results, good targets usually hit the same from all angles.
But again...not all the time.

What also works for me, sometimes, is using that disc knob.
I have found that when you turn past the fade out point of the target and then back down to where it comes back in, (more accurate than going up till it fades out), listen to how the signal comes in as you slowly turn that knob.
Coins and good targets are usually silent till they come in all of a sudden with a full, bright signal.
Trash will sometimes crackle as it comes in and you have to keep turning that knob till the full signal comes in.
A combination of this, the shake, hitting the target from different angles...gotta use all the tools at your disposal.

In the end, however, even if I do all of this to figure out the target, I still usually dig all solid signals.

Trying to develop my X-Ray vision, when that happens I will have 100% confidence that trash signals are trash.
Till then...I dig.

 

[Dan-Pa.]

I might add in pinpoint most Tesoro's especially older ones a gold ring versus a pull tab or small piece of foil the gold ring will hold the tone longer when coil is swiung over the target in pinpoint.
Of course it takes practice and a trained ear and not foolproof but cuts down the odds to dig or not...In other words for the tab beep-beep and the gold ring beeeeep-beeeeep...Takes experimenttion but really works but perhaps a key or lead sinker will do the same as a gold ring because of its weight but again does cut down the odds. Tesoro indeed has audio variances to a trained ear..and time in the field analyzing targets rather than digging a lot of junk.

 

[kirk01]

Thanks for the advise REViER and Dan-Pa, like I said still learning the Vaquero.

What technique do you guys use to identify deep junk iron?


I have had some luck with setting the threshold down to JUST after the the regular hum is inaudible, but where there still remains a SLIGHT undertone.

Sensitivity as high as you can go without chatter.

Seems to help a little causing iron to drop out or break up at about the 3 o'clock position on disc setting.

Good Hunting

Denny