Coil Help

Only for the discussion of the XP Gold MAXX Power Metal Detector.
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Steve Dixon1968
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Coil Help

Post by Steve Dixon1968 » Wed Nov 01, 2017 7:06 am

First of all I would like to say thanks to you all for the help with the GMP, i'm loving it :)
When I bought my machine it came with a 9" coil on it with 2 other coils, a huge SEF and a 9x5 XP.
Have any of you used these coils?
I have left the 9" on while I'm learning but the child in me wants to use the other two :)
Are the other 2 any good?

So far I have found silver and roman with my GMP and I've become a little obsessed :)

Thanks



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Bargeman
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Re: Coil Help

Post by Bargeman » Wed Nov 01, 2017 5:45 pm

With regards the huge SEF coil, when you have searched an area with the 9" coil as best you can, and you are pretty certain you can't get any more signals, then give the sef a go, as you may well get a couple of inches more depth with the larger coil, especially if you also turn the sensitivity up as high as you can get away with. ::g

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sweepstick47
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Re: Coil Help

Post by sweepstick47 » Wed Nov 01, 2017 7:42 pm

A good choice of machine the 'GMP' ::g As you've intimated, give the standard 9 inch coil the chance to show it's ability before venturing forth with the dustbin lid and then choose where to use it carefully. You may also want to consider some kind of 'harness/Bungee' to offset the extra weight but you will probably find it necessary to 'shorten' the stem length anyway which should help a little at least. Good Luck. ::g Regards ss47
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Lowland
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Re: Coil Help

Post by Lowland » Thu Nov 02, 2017 12:12 am

Good advice above.
All I can add is that putting my GMP with a bigger coil on
Feels like wielding a weapon
has absolutely brought a bit of well wandered parkland to life.
A noticeable depth increase....mind,the ground is damp right down now
which seems to help,
How big is your bin lid?
And what's the ground your on?
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Steve Dixon1968
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Re: Coil Help

Post by Steve Dixon1968 » Fri Nov 03, 2017 7:49 pm

Huge and heavy, I have stubble & pasture.

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Lowland
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Re: Coil Help

Post by Lowland » Fri Nov 03, 2017 9:01 pm

Steve Dixon1968 wrote:
Fri Nov 03, 2017 7:49 pm
Huge and heavy, I have stubble & pasture.
One thing worth thinking about with the big un on...
Hip mount the controlbox..
Made a bigger difference than i thought it would,
Ive started doing this and am a convert.
Thats with the tornado coil which is twelve inch ir so.
If your coils a ufo sized beast,it might need counterbalance at the back.. :-/

If youre stubble is getting soft and rocking in the ground the big coil might be the very thing for bulldozing it oot the way
::g
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Re: Coil Help

Post by Ten pence! » Fri Nov 03, 2017 9:04 pm

Steve Dixon1968 wrote:
Wed Nov 01, 2017 7:06 am
First of all I would like to say thanks to you all for the help with the GMP, i'm loving it :)
When I bought my machine it came with a 9" coil on it with 2 other coils, a huge SEF and a 9x5 XP.
Have any of you used these coils?
I have left the 9" on while I'm learning but the child in me wants to use the other two :)
Are the other 2 any good?

So far I have found silver and roman with my GMP and I've become a little obsessed :)

Thanks
I use the standard coil but had the eleven inch XP for a while, no worthwhile increase in depth, perhaps half an inch at the most on a large target? But inferior in contaminated ground and slightly less deep on small low conductive targets, the 11in went mainly because it unbalanced the machine and led to some arm ache.

Incidentally I'm not guessing about the depth either, I have a long established test garden set in the lawn and tried the two coils side by side, they were set up to the best usable settings that you could tolerate in the field.

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