GMP on the beach....

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littleboot
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GMP on the beach....

Post by littleboot » Wed Jun 07, 2017 1:34 pm

I live quite close to the coast (Normandy... but NOT landing beaches....) I like to have a potter looking for loose change in the dry-ish sand...
Now I have never had a specialist beach machine for wet sand etc. Never needed one in Staffordshire as the coast was too far away to make it worthwhile. I used to have a Tesoro Invincible which was very handy on the beach as long as I didn't get ahead of myself and wander onto the really wet stuff.
Sold it....regret that now but that's another story....and both me and hubby have GMPs.
Now I have read some settings online which suggest sensitivity needs to go right down. Seems reasonable. The sand I detect is dry BUT of course beyond a certain depth it is always damp. I only have to see the kids spoil heaps when they dig their holes to know that.

Anyway...my question...has anyone used the GMP in such conditions and what were the results?

Would be interested to hear some first hand observations before I decide if its worth taking the old Grumpy onto the beach for a day out. B-)


GMP, Tesoro Invincible, wellies.

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Danzigman
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Re: GMP on the beach....

Post by Danzigman » Wed Jun 07, 2017 6:50 pm

littleboot wrote:
Wed Jun 07, 2017 1:34 pm
I live quite close to the coast (Normandy... but NOT landing beaches....) I like to have a potter looking for loose change in the dry-ish sand...
Now I have never had a specialist beach machine for wet sand etc. Never needed one in Staffordshire as the coast was too far away to make it worthwhile. I used to have a Tesoro Invincible which was very handy on the beach as long as I didn't get ahead of myself and wander onto the really wet stuff.
Sold it....regret that now but that's another story....and both me and hubby have GMPs.
Now I have read some settings online which suggest sensitivity needs to go right down. Seems reasonable. The sand I detect is dry BUT of course beyond a certain depth it is always damp. I only have to see the kids spoil heaps when they dig their holes to know that.

Anyway...my question...has anyone used the GMP in such conditions and what were the results?

Would be interested to hear some first hand observations before I decide if its worth taking the old Grumpy onto the beach for a day out. B-)
Before I moved away from my isolated island in the middel of the ocean this Feb. I used to go lots on the beach.. I dry sand I always used GMP.. And belive I missed nothing.. The wet part is more tricky, and I often find "pumping" difficult, so used to set the GB manual to around 20+.. In wet..
Best of luck and HH. - John
XP DEUS. GPP VII. GARMIN etrex 20.
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Ten pence!
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Re: GMP on the beach....

Post by Ten pence! » Wed Jun 07, 2017 10:09 pm

I have a GMP and I've tried it on the beach, not that good to be honest, as you probably know it's purely an inland machine and a pretty exceptional one at that.

The problems I had on the dry sand were that it loves foil and pulltabs and there isn't an easy way to knock these out or get iffy signals to id them, in otherwords a pain, as for wet sand it was a struggle, sensitivity down to around ten- o clock, iron threshold maximum with iron volume off, ground, well that didn't seem to matter, and silence on II. End result? Still very sparky and barely usable, irritating in fact.

I have a Makro Racer 2 for beach use and this does work quite well, the numbers combined with the signal means you can avoid most foil and ringpulls on the dry stuff and it's pretty acceptable on the wet in the dedicated beach mode or two tone if you tweak the thing a bit.

I think what I'm basically saying is leave the GMP at home!

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littleboot
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Re: GMP on the beach....

Post by littleboot » Wed Jun 07, 2017 10:34 pm

I think what I'm basically saying is leave the GMP at home!
Ha. Pretty much what I thought TBH.
However, French beaches are pretty much litter free so I may still give it an experimental swish one of these days. Strictly on the dry-ish stuff.
GMP, Tesoro Invincible, wellies.

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