Any tips for when using a larger coil.

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chip
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Any tips for when using a larger coil.

Post by chip » Sun Jan 28, 2018 2:49 pm

As per title, any tips or tricks for when using a larger coil?

Thanks.


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Re: Any tips for when using a larger coil.

Post by tigtog » Sun Jan 28, 2018 4:47 pm

go slow
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Re: Any tips for when using a larger coil.

Post by bob79 » Sun Jan 28, 2018 5:05 pm

As tigtog says slow, also keep the sensitivity lower as the coil will be seeing more of the ground matrix, resulting in more false signals.

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Re: Any tips for when using a larger coil.

Post by chip » Sun Jan 28, 2018 11:09 pm

Ok thanks,hopefully LP or CS will have a dig soon so I can try it out.
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Re: Any tips for when using a larger coil.

Post by Junior » Mon Jan 29, 2018 7:28 am

Look at your swing I try and keep it low, parallel to the ground and slow regardless of detector .. my mate sweeps like a banana but covers more ground he's off like a hare ,but generally gets more than me. So speed vs low and slow who knows. I've big coils for both of my detectors have it turned them into hammered hovers. No. If your on meadow and you think you've gone over it well. Yes a bigger coil may give you a inch or so but I'm now of the mind maybe should not of bothered. I've spend £££££ on stuff. mate is getting as good stuff with the 9 inch coil and detector he's had for the last 13 yrs. Learn your detector first. Not that I have it's always the detectors fault !!!! rl;
Last edited by Junior on Mon Jan 29, 2018 1:10 pm, edited 1 time in total.

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Re: Any tips for when using a larger coil.

Post by owdgit » Mon Jan 29, 2018 8:53 am

as others say, slow down a bit with bigger coils.
it might be worth digging a small test hole on clean ground, bury a coin so you know exactly where it is and practice pinpointing with the big coil as they can be a bit different to each other / stock coils.
a month or so ago i fitted a Nel Tornado to my machine and while its a great coil, i'm not 100% convinced that its found anything that i wouldn't have found with the stock.
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Re: Any tips for when using a larger coil.

Post by Fishwick » Mon Jan 29, 2018 9:12 am

Over time and with practice the finding of targets got easier and the holes got smaller!!!..

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Re: Any tips for when using a larger coil.

Post by Mud Max » Mon Jan 29, 2018 2:57 pm

I put the Tornado on the Garrett 400i, I noticed a little bit of depth gain but I didn't have a sudden surge in finds. Ground coverage is probably the best improvement.
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Re: Any tips for when using a larger coil.

Post by fred » Mon Jan 29, 2018 7:37 pm

The Minelab 17 inch coil gives 3-4 inches extra depth over the stock coil but loses a bit of sensitivity on cut quarters and halves. ::g
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Re: Any tips for when using a larger coil.

Post by littleboot » Mon Jan 29, 2018 10:23 pm

I have a big coil for my GMP (an XP one not a Nel). But its heavier and less balanced so I have no choice but to go slow. So it doesn't really help me with ground coverage as I go slower and get tired more quickly. It also affects the 'waggle' I do over a signal (to sharpen it and pinpoint)making it less effective.
Slow is a given and I reduce sensitivity a tad. I don't know what machine you run but use the set-up which gives you most target definition tone-wise.
I prefer my stock nine incher for most searches. The big one is pulled out only when finds have dried up in areas where I previously found something good.
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Re: Any tips for when using a larger coil.

Post by Fusion » Mon Jan 29, 2018 11:24 pm

I'm going to be contrarian, and suggest you sweep a larger coil faster than normal. Likewise, I recommend swinging a small coil ( eg. 5", 6" ) slower than normal.
But detectors do vary, so you really need to try it, and work out what seems like the optimum speed for every coil size you use.
:(

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