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did the GB mod on my Cibola WOW!
Posted by: nebdirtturner
Date: October 27, 2013 04:03PM
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

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Re: did the GB mod on my Cibola WOW!
Posted by: mojotrout
Date: October 27, 2013 05:52PM
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 Silver uMax and Compadre w/ 7" coil
Minelab X-Terra 705 w/ 7.5 kHz 9" coil

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Re: did the GB mod on my Cibola WOW!
Posted by: tabman
Date: October 27, 2013 06:38PM
Tesoro detectors love gold rings and nickels. 12 1/2 inches air testing is very impressive.

Thanks for sharing.

tabman



Tesoro Tejon * Tesoro Outlaw * Fisher F75SE * Tesoro Compadre * Modded Tesoro Cibola * Tesoro Golden u-Max
Tesoro Bandido II u-Max * Tesoro Deleon * Garrett AT Pro * Teknetics G2 * Tesoro Vaquero * Killer B's Wasp Headphones

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Re: did the GB mod on my Cibola WOW!
Posted by: kaolinwasher
Date: October 27, 2013 07:32PM
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

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Re: did the GB mod on my Cibola WOW!
Posted by: Sven
Date: October 27, 2013 09:02PM
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.



Deteknix Quest Pro, Teknetics Mark 1, Nokta Impact
Self built Mirage Pi's --- they work great in trashy areas!!




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Re: did the GB mod on my Cibola WOW!
Posted by: kaolinwasher
Date: October 28, 2013 02:07PM
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

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Re: did the GB mod on my Cibola WOW!
Posted by: nebdirtturner
Date: October 28, 2013 09:47PM
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.

So if you could do that mod................why won't Tesoro???
Posted by: Ivan
Date: October 29, 2013 01:00AM
Why not improve their products with such simple yet performance enhancing modifications. Boy, manufacturers can be such morons!!!!!

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Because..........
Posted by: Sven
Date: October 29, 2013 05:46AM
Quote
Ivan
Why not improve their products with such simple yet performance enhancing modifications. Boy, manufacturers can be such morons!!!!!

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.



Deteknix Quest Pro, Teknetics Mark 1, Nokta Impact
Self built Mirage Pi's --- they work great in trashy areas!!

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You can make more room
Posted by: Sven
Date: October 29, 2013 05:49AM
by swapping the 16mm dia Alpha brand pots used by Tesoro for the 12mm Alpha pots
http://www.mouser.com/catalog/catalogusd/645/822.pdf



Deteknix Quest Pro, Teknetics Mark 1, Nokta Impact
Self built Mirage Pi's --- they work great in trashy areas!!

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Re: Because..........
Posted by: razerback408
Date: October 29, 2013 06:09AM
Quote
Sven
Quote
Ivan
Why not improve their products with such simple yet performance enhancing modifications. Boy, manufacturers can be such morons!!!!!

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.
my V super tuned will get 13" on a nickle

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Re: did the GB mod on my Cibola WOW!
Posted by: nebdirtturner
Date: October 29, 2013 11:27PM
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.

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Re: did the GB mod on my Cibola WOW!
Posted by: Sven
Date: October 30, 2013 06:00AM
Quote
nebdirtturner
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.


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/

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Re: did the GB mod on my Cibola WOW!
Posted by: nebdirtturner
Date: October 30, 2013 09:44AM
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.

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Re: did the GB mod on my Cibola WOW!
Posted by: hatpin
Date: October 30, 2013 09:56AM
So, with this mod it is the same as a vaquero ?

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