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Re: The Cibola is a 'fixed' GB model. Not 'automatic'.

kac
January 16, 2022 09:04PM
Quick update. I received the Cibola and it had the gb mod installed with 10 turn pot. The machine was very noisy and knock sensitive. I checked all the solder joints and redid the 2 wires but still noisy. I had an extra 3 3/4 bournes and changed it out for that and it was worse.
Last bit I cut the 2 leads short and installed a micro pot, brought the unit to gb on a neutral spot 80gb from my Garrett machines and the Cibola now runs nice and quiet. Depth isn't half bad at all on it as it now has just a fixed gb.

I don't know that much about the circuit on it but think the big pots are just too noisy for it and might need some sort of filtering. Machine seems much happier back close to stock. Also put the original pp button back on and made a battery box cover as the original was missing. Few quick measurements with my calipers and a reference pic from the web worked out ok and I have a nice little 3d SLA printer I use.

If I can get a hold of propper trim I will swap it out if I can but looks to be surface mounted which can be tricky. Anyways I'm now looking for a shaft for it.



Edited 1 time(s). Last edit at 01/16/2022 09:05PM by kac.
Attachments:
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Subject Author Views Posted

Cibola GB question

kac 563 January 06, 2022 11:04AM

Re: Cibola GB question

GeoW 708 January 17, 2022 06:42PM

GeoW, a good question and really 'on topic'.

Monte 287 January 17, 2022 07:41PM

Re: GeoW, a good question and really 'on topic'.

GeoW 369 January 23, 2022 03:53PM

The Cibola is a 'fixed' GB model. Not 'automatic'.

Monte 676 January 07, 2022 09:15PM

Re: The Cibola is a 'fixed' GB model. Not 'automatic'.

kac 324 January 08, 2022 09:52AM

Re: The Cibola is a 'fixed' GB model. Not 'automatic'. Attachments

kac 272 January 16, 2022 09:04PM

Re: The Cibola is a 'fixed' GB model. Not 'automatic'.

Joe D. 272 January 17, 2022 12:36AM

Re: The Cibola is a 'fixed' GB model. Not 'automatic'.

kac 363 January 17, 2022 12:15PM

Machines all back together Attachments

kac 268 February 05, 2022 12:15AM

Good looks, rods, and search coils.

Monte 275 February 06, 2022 10:29AM

Re: Good looks, rods, and search coils.

kac 242 February 08, 2022 04:12PM

Re: Good looks, rods, and search coils. Attachments

EL NINO 262 February 14, 2022 12:04PM

Love the Stone Mountain Comm Half! N/T

GeoW 187 February 15, 2022 10:23PM

Re: Good looks, rods, and search coils.

kac 433 February 15, 2022 12:33PM

Re: Good looks, rods, and search coils.

kac 182 April 06, 2022 07:47PM

Search coils and detector performance sure can get interesting..

Monte 220 February 14, 2022 07:43PM

Re: Good looks, rods, and search coils.

Joe D. 234 February 09, 2022 12:22AM

Re: Good looks, rods, and search coils.

GeoW 230 February 12, 2022 11:24AM

Re: Good looks, rods, and search coils.thumbs up N/T

kac 215 February 18, 2022 03:19PM

thumbs up Re: Good looks, rods, and search coils. N/T

kac 281 February 09, 2022 12:00PM



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