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DeepTech

did the GB mod on my Cibola WOW!

N

nebdirtturner

New member
I finished my Cibola and all I can say is WOW. I did some air tests (I know not realistic in ground but it shows a difference). I used a 10 turn Bourns pot from Digi Key, I got a great repeatable signal (not as loud as a shallow beep) but at 12.5" on a nickle definatly a signal that anyone would dig, it was probably 1/2 as loud as the shallow depth coin beep. It was very easy to accomplish, just figured I would post my results. HH
 
awesome!. My next detector is going to be a modded Cibola. I have heard they are great jewelry machines and if they go that deep, should be a relic hound too!
 
Tesoro detectors love gold rings and nickels. 12 1/2 inches air testing is very impressive.

Thanks for sharing.

tabman
 
How much did the mode cost you ,? I had a cibola and it was a ver nice machine but i got rid of it because it had no GB 12,5" thats close to the bliss at 13" air test on a nickel
 
I managed to scrape out 13" on a nickle air testing with the mod.
It helps to have a better than average Cibola to mod as well. One I bought from
a forum member years ago got about 1 1/2" deeper air test than others I had.
I can no longer do the mods for US forum members, shipping to Canada and return shipping
would average $70.00, a postal rip off. Keith Southern a forum member will still do them,
he's in Georgia if you can't do it yourself.

The Cibola was a superb tot lot machine with the 5.75" coil when living in Georgia, loved picking up the small stuff.

Will say the Cibola with fixed GB was a dog in hunting in the hot red mineralized soils in Kennesaw, Marietta area.
GB mod improved performance but, still not a depth demon. In non-mineralized soil the GB mod'd Cibola might be
a real killer. Never got the chance to try it out on milder soils.
 
I have not owned ay detector that did good in mineralized soil when in its disc mode, thats why i like the all metal option. its that or a P.I machine then what is the diff
 
Kaolinwasher, the mod is very simple, I bought a 10 turn Bourns pot for like $16 shipping was $8 more, I bought another pot as well for a future F2 manual GB Mod, but shipping stayed at $8 or so. I bought a Tesoro small knob to finish off the install. You have to remove the PP button to install the GB pot in its place. You will have to add a push button switch or toggle to replace the PP button, I already had one so that didn't add any more cost to the build. You will also need some sort of plastic washer to cover the existing hole where the PP button was since the hole is too large for the nut on the Pot to seat on the face of the detector. It takes a bit of time and a soldering iron but it was easy. I ended up mounting a push button switch for the PP through the handle where the tejon is mounted for the disc switch.

I have ordered two more pots and will be making a triple disc Cibola as soon as they are here. There is not a bunch of space inside the control box the bottom has more room that is why you have to put the pot in where the PP button was. I think when I do the triple disc I will switch the GB pot and the Disc pot. I find it difficult to thumb the disc now now since it is on the "wrong side" now. I will probably have a new face decal made so all the knobs match up to their functions when I get this all finished. the face decal I will be making with 15 or so "tick" marks for the disc knob so I have more ability to fine tune the disc.

I hope all this makes sense if not I can explain more.
 
Why not improve their products with such simple yet performance enhancing modifications. Boy, manufacturers can be such morons!!!!!
 
Ivan said:
Why not improve their products with such simple yet performance enhancing modifications. Boy, manufacturers can be such morons!!!!!
Click to expand...

Because this detector was designed around a person who wanted a turn on and go machine. The V came out at the same time with manual GB for those that wanted to fine tune
thier detector.
 
Sven said:
Ivan said:
Why not improve their products with such simple yet performance enhancing modifications. Boy, manufacturers can be such morons!!!!!
Click to expand...

Because this detector was designed around a person who wanted a turn on and go machine. The V came out at the same time with manual GB for those that wanted to fine tune
thier detector.
Click to expand...
my V super tuned will get 13" on a nickle
 
Sven you are correct with that pot you could mount it in the upper right corner away from your thumb the only problem is it is only 1 turn I don't know how well that would work. I had issues bumping the knob today when I would set the Cibloa down and pick it up, luckily they are 10 turns, so even turning it 180degrees doesn't really throw it off. It takes almost 360 degrees to go from positive to negative so there is a big sweet spot. When these I purchased some pots for my triple disc project they were to be mounted in the control box in the upper left and right sides, but now I am thinking it would be nice to be able to adjust them without taking the faceplate off, so now I may purchase some differnt types maybe the ones you referenced. Sven do you happen to know the resistance value of the disc pot in the CIbola, if not I can open the case and see if they are marked. I will need to source an o ring with 1/4" ID and thick for some resistance on the GB shaft to tighten it up.
 
nebdirtturner said:
Sven you are correct with that pot you could mount it in the upper right corner away from your thumb the only problem is it is only 1 turn I don't know how well that would work. I had issues bumping the knob today when I would set the Cibloa down and pick it up, luckily they are 10 turns, so even turning it 180degrees doesn't really throw it off. It takes almost 360 degrees to go from positive to negative so there is a big sweet spot. When these I purchased some pots for my triple disc project they were to be mounted in the control box in the upper left and right sides, but now I am thinking it would be nice to be able to adjust them without taking the faceplate off, so now I may purchase some differnt types maybe the ones you referenced. Sven do you happen to know the resistance value of the disc pot in the CIbola, if not I can open the case and see if they are marked. I will need to source an o ring with 1/4" ID and thick for some resistance on the GB shaft to tighten it up.
Click to expand...


Find a different knob, might help with your accid. bumping of the GB pot. O-rings, go to any good hardware store they should have been boxes with different sizes to choose from. Or you can find them at your local radio control hobby shop. They can also be one size smaller in hole size to grib the pot shaft. You'll have to remove the face plate and check the pot values, don't know off hand. And for wiring your better off using radio control servo wire 26-28AWG--http://www.hansenhobbies.com/products/connectors/servowire/
 
I got a bunch of multi-strand small AWG wire from a printer I threw out, so it works great. I think I figured out my potentiometer issue and space issues using this http://www.mouser.com/ds/2/427/p16pa16-239922.pdf the knobs won't look the same as the Tesoro knobs but oh well, it is going to be used in the dirt anyway. I am calling Tesoro today to see if they will give me the resistance for the current Cibola disc pot, I want to make sure that I have the right value. I bought some already based on the write up of a triple disc Silver Sabre but then I got to thinking the values might not be the same and I dont want to burn her up.
 
Hatpin, supposedly the Cibola and Vaquero are the same machine just the V has the manual GB from the factory. In my opinion never having swung a V, I can say that I am extremely happy with the performance of the Cibola with manual GB and for the price of $25 there would be no reason I would pay more for one. On a side note I just (literaly) got off the phone with Rusty from Tesoro talk about a nice guy, he explained the new warranty system they went to at Tesoro and how it would affect second owners such as myself and explained the background reasons why they went the direction they did. We got to talking about the Cibola and Tejon depth differences and how the Tejon does not supertune like the Cibola and the V. He stated that supertuning in discrimination mode should get you around a 25% increase in depth without EMI issues and that the Tejon is the deepest they make. When I did my air test on the nickle after the GB mod and hit 12.5" I can't remember if I did it in supertune or regular so I may fool around and check that tonight just to see. He also stated the disc pots are 100K so I have a finalized answer to that question. So off to Mouser to order some new pots for the triple disc project.

I think I will set the primary pot to a nickle, secondary at zinc and third at copper as the other thread pointed out. I will have great depth with more disc than the Tejon all for under $300 (used detector). I will post more as things get finalized if you are interested.

On an side note I detected at a 1885 house yesterday and the machine ran great, I hit a signal that maxed out my disc, when I raised the coil I could only go about an inch above the ground before it completely disappeared. It was solid and repeatable from all angles so I began digging. I ended up digging 20" and never found it, it was still in the hole, I figured big iron so I took my probe screwdriver with a 12" shaft and shoved it down to the handle at the bottom of the hole and never hit anything. I searched the walls and ran my pinpointer up and down all the sides multiple times thinking I was off on my pinpoiting but it was right in the middle and I never got anything from the sides not even a single beep. My Garrett PP hits on my Lesche from about 3" or so so I know it couldn't be in the walls ( I checked the PP numerous times to make sure it wasn't detuned). I will have to go back and bring the big shovel just to satisfy my curiosity.
 
So haven't heard about second ownership warranty issues. Hasn't been that long since I talked to Rusty and he didn't say anything, that was after sending in a second hand machine(they fixed it free).
What's the scoop?
 
In many if not all detector manufactures they spin off many different models from one basic platform. If the company takes out a jumper that takes out a function then it can be a different model, if they add something to divide up the circuits to give the operator another control, then its a different model. So, with one circuit board a company could build a dozen or more different models (if they so choose to do so)
There is one company (not Tesoro) that is "believed" to use ONE circuit board,
One control housing and makes probably ten or more detector models out of them, then they went even farther, they did spin offs of them under a different brands!

But. I think we need to keep it mind that its not the $8.00 pot, or the $11.00 switch that's charged for really, its the design technology and each one (function) that can be separated and marketed is a way to make money. So, they add, open, or unlock a feature. Also, some people just want simple,
Some want more control.
In the end a company has to make money and they need to also have a product line that is adaptive to the different demand needs of the market.

So, in a way it makes sense from a marketing standpoint to get as much market coverage out of their products as possible within reason and some companies are batter at staying within reason than others! Tesoro seems to be doing very well at this with there products and their product line (being reasonable).

Mark
 
Tesoro will not work on any unit that has been modded so kiss the warranty and Tesoro's excellent service after the sale goodbye.
Just something to think about before you open the control box....
 
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