Barracuda Legend Kit Problems

[ripsdevala]

Concentric, DD coil? Is that compitable with bara, i dont know that.
I prefer make pcb my own, print, iron, peal, and ready to use many bara board, the cons is its just ugly.

[Tim]

Yes, I just checked. 450uH. Perhaps I should try some more coils. The best 2 I have are at about 430uH and 380uH. I realise this detector is not made to work with big coils, but it works really good with my 45x30 square coil off my Sniffer (3 rounds Cat5, flat wound,[-1=23]) which is around 450uH. Tonight I have marked out a melamine plate, 8 inches, 21 slots, to make a Mike Tuggle spiderweb coil. The largest wire I have is .5mm enamelled, but I have .63 on my watchlist. I will try .5mm. Teflon coated wire seems the best recommended for fast coils, but I am yet to find any.
Probably I should make/buy another Bara board, and try lower Rs on the 40106 (as recommended). Different or mis-matched T3-4s, re-instate switch/T5/etc. and other changes.
I need to finish my last 3 assignments for my Cert II Horticulture as a matter of urgency first, but I regularly get side-tracked with detectors

No matter, I am very happy with my Bara as is, and the coil on it is very light. My ML/Coiltek 11"mono for it/others should be here early next week. I received my concentric 10x5 for my GMT yesterday, and it is even more sensitive to small gold than the DD. 1.7g flour gold at 8 inches easy.
Also I have sourced a carbon lower shaft and alloy mid shaft for the arrival of my IDXpro and 6x4 BlueMax.

If you are interested have a look at the Falcon MD20 thread- I found a discrepancy with the diode connections (schem vs layout) that may explain why thread has gone idle. One of these on a long stick would be handy for poking around.

So many wonderful projects here........

[ripsdevala]

I just got a L meter, and found that my coil is 480 uh R 1.5, L its too high.... 450uh is what i remeber.

[ripsdevala]

Let me check.
Another day i bring my cuda to my aunty to swing on her backyard over a wet clay ground, its very dificult, every spot is beeping, the only way to make it work is turn max the volume and hear the ground and metal beep, and this bara love a wet old piece of brick and wet roof clay tile if turn to pointer

[Tim]

Now this is the complete docs, I already search and got the doc but there is no sticky for this im afraid geting fail without sticky, thanks.

Btw, my bara coil cant make 2 beeps for iron, sometimes it does but mostly not, already use spesific part from sticky, maybe i put a bad quality part or something else.

Sorry it wasn't a sticky, as such, but Eduardos complete files zip from around page 20(?).
Bara isn't meant to make 2 beeps, its just that some people witness a less accentuated tone over iron. I did not notice this until I used headphones.

[Koala]

Now this is the complete docs, I already search and got the doc but there is no sticky for this im afraid geting fail without sticky, thanks.

Btw, my bara coil cant make 2 beeps for iron, sometimes it does but mostly not, already use spesific part from sticky, maybe i put a bad quality part or something else.

iron rejection as far as I can tell is down three things


1 the objects size and shape. Long thin iron best
2 direction of swing and speed. lengthways and slow best
3 delay setting. Best for iron rejection is not best for depth.

[ripsdevala]

Now this is the complete docs, I already search and got the doc but there is no sticky for this im afraid geting fail without sticky, thanks.

Btw, my bara coil cant make 2 beeps for iron, sometimes it does but mostly not, already use spesific part from sticky, maybe i put a bad quality part or something else.

[Tim]

My post above was regarding the Baracuda.
As for the IDX, all the info is here. Just use the search function. Search IDX or go to advanced search/posts-with keywords, to find specifics-e.g. IDX coil, or IDX schematic, etc. Once you get the hang of it, it's easy.
We should try to keep this thread on the Baracuda topic, but here is the full IDX"sticky".
I have no inclination to do the TGSL. If I were to choose a Tesoro, it would be the Lobo, or Bandido.(for gold).
Also I like all Sascho schematics.

[ripsdevala]

Tim, TGSL or IDX? I have confuse here, do you have complete documentation for IDX?

[Tim]

I got my LT1054's yesterday. Swapped one for the 7660, and removed the 10v reg. Tried a Cat5 dual field I made at 430uH- no good, too much resistance, I think. I was getting a signal with large iron, as it was leaving the coil field. Did re-zero offset. Did try all delay settings. Tried various dampers across the inner coil, and main damper.
I have an 11 inch Coiltek mono on the way to try. Went back to the 10x5, .25mm enamelled, 30 winds coil, for now. Re-zeroed and delay range set.
Down the river for a swing. Nearly directly under HV powerlines-a bit of interference at high sens setting- but she worked a beaut! With the TIP 127, I can definitely tell steel from alloy and copper. Pulling 1970s ring-pulls at 10 inches, and got two OZ 1c pieces(12mm copper) at about 6 inches, in dry white sand.

Absolutely satisfied with this ' tecta. If the Coiltek improves it I will be well and truly chuffed.

Still awaiting my Philips 5534s
Home-made coil is shielded with un-earthed mylarised plastic powdered milk packet, top and bottom.

Have an IDX and Minipulse boards on the way from Silverdog, and also scored an IDXpro topshaft, display, and box, with MR Bill mods off fleabay. Seller says it has sens issues. Fingers crossed it was just a settings issue, or he was trying to use a 6B8 coil to test it...... I also have a 6x4 Blue Max on the way. Depth is not my aim, but small gold. I have the Sniffer for the stuff down Deeeep.

[ripsdevala]

Did anyone have video with his cuda on the field? Want to compare it with mine.

[ripsdevala]

The Baracuda does not have the ability to sample early enough to be sensitive to low (or even medium) ground mineralization. Either you have high mineralization, or some hot rocks. If that's not the case, then the shielding on your coil is probably suspect, or the connecting cable is slightly microphonic. Also, the original Baracuda does not fully reject the Earth Field due to a design fault.

Ya, Im not shielding my coil

[Qiaozhi]

..... the thing for now is my bara too sensitive to ground, sometimes it make a false signal.

The Baracuda does not have the ability to sample early enough to be sensitive to low (or even medium) ground mineralization. Either you have high mineralization, or some hot rocks. If that's not the case, then the shielding on your coil is probably suspect, or the connecting cable is slightly microphonic. Also, the original Baracuda does not fully reject the Earth Field due to a design fault.

[Tim]

Motion/non-motion-Perhaps some solder flux residue is still around transistors? As for coil being sensitive to ground, maybe there is metal on shaft too close to coil, or lead/joiner is floppy?

[ripsdevala]

The only option i know with ground problem is make it non motion mode, but it will decrease the sens, and some how i cant make it return to motion mode