Questions on Ace 250 12inch coil

[Reader]

I've read that some of you have the 12 inch coil on the 250. It seems to be very sensitive to small objects e.g. Uncle Willy's ring find. I am curious as to how much depth increase you gain vs. the standard coil.

What's the deepest find with standard coil compared to the deepest find with the 12 inch? Thank you all for your help. I have really enjoyed this new sport, ah,I mean, hobby, uh, addiction!

 

[NM5K]

I'll be able to compare them pretty soon, as I just
ordered it, and also the sniper coil. Garrett claims
an appx 33% increase in depth. But it probably varies
a bit. My gut hunch is probably about an extra two
inches, but remains to be tested.. I think it will make
coins etc that are at the 8 to 10 inch plus range to hit
more reliably, as they won't be in that thin sliver of
response you have at that depth with the stock coil.
Some already have them both, and will probably chime in
on what they see. My deepest with the stock coil was
probably a couple of days ago. Found a penny at about
the 6-7 inch range. It was down there pretty deep.
You have to consider that my coil was maybe an inch or
so off the ground, considering I skim the grass. So that
was almost at the 8 inch range as far as the true distance.
I've been hitting my front yard a bit more now, and notice
that for some reason the coins in the front are deeper than
most of them in the back. Maybe cuz the front gets more
topsoil added at times over the years?? I've been slacking
lately , cuz I've been kinda busy with work, etc, but
I'm now at 424 coins just in my yard alone, and am slowly
picking away at my 500 coin target I want to get out of my
yard. I'm fairly sure I'll hit 500 before too long. The
front yard is still pretty busy..The back yard is getting
pretty cleaned out, at least for the stock coil.
I've plucked about 40 out of the front yard in the last
couple of days. So it's still got a few to go.
The back yard will be a good test for the big coil, to see
if it can spot any the stock coil missed.
MK

 

[John-Edmonton]

Depth of any metal detector is relative to the area in which it is being used. Things such as mineralization, type of matrix, angle of coin, which coin, silver-copper?, moisture etc. But I would expect the large coil to get at least 1-2 inches in depth more then the stock coil. A 12 inch coil doesn't get twice the depth of a 6 inch coil.

But where the large coil really becomes an asset is its larger size, not due to the depth, but to the larger surface area which it covers per swing. If you ever plan on doing a large area, say a football field for instance, it would take a lot less time using a large coil then a sniper coil. And Garrett built this large coil on the ACE Series without sacrificing sensitivity to small object, yet pinpointing is so easy. I hope this helps......

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[zamora]

I just sent my money order to kelly co for my ace 250 plus accessorys plus 4.5 coil and a free 4v pinpointer for $286.85 man am i excited-- brand new to this sport or passtime or what ever imready BOB

 

[Uncle Willy]

The 12 incher will give you 2-3 more inches over the stock coil. The general rule of thumb for coils is that their depth, under ideal conditions, equals their diameter.

Bill

 

[Uncle Willy]

Now you'll be chewing your finger nails waiting for the brown truck. HAA.

Bill

 

[Uncle Willy]

You got it knocked, go detecting and never leave home. HAA.

Bill

 

[NM5K]

Yea, ain't gonna last forever though...
After a while I'm gonna have to start hitting some
other places. Got a few I've been scouting out..
Most are parks, and they have kiddy sand lots too.
I bet the sniper coil will get a workout on those.
I went to one the other day, but all the kiddies
were out playing in it.. I decided to come back later
when it was quiet.
MK

 

[wayne9452]

Only thing is they are on back order and won't ship until Tue or Wed.

 

[ace250semo]

I have used the 12" coil on my Yella Fella, it does give me an extra inch or two in depth, but I am still having some trouble with exact pinpointing. So to compensate, I bought the inline probe, if ever there was an object that was worth the money, these are, (after I have dug my hole), it will set the ground on fire....the 12' coil seems a bit heavy on the nose end, too...for my ace250, so I usually keep the sniper on. Another thing about depth is the type of ground you're covering, and of course there's all those aluminum tabs and tops, but, since aluminum has hit at all time high in the junk yard, maybe it would be worth saving those finds, too.Jack

 

[Uncle Willy]

Are you pinpointing off the front tip of the inside oval - then a ways back from that point on deeper coins? Also you can turn 90 degrees to the target, scan and pinpoint again, and it will usually be right on.

Bill

 

[NM5K]

I got mine tonight at about 8pm. Did a few tests, and like
you, I seem to see about 2 inches max increase. But sorta
inconclusive. I did air tests, and it did seem to maybe get
an inch or two more on a quarter. But not a drastic increase.
I also tried using the pinpointer range, as it's also a good
indicator, and ditto.. Seemed to give me appx 2 inches or so
more pinpointer distance on a few medium size targets. But
will have to do some more tests. I notice being bigger, it
chatters more.. Also..Mine seems to want to be run pretty
strong as far as the sensistivity. If I back the sensistivity
back to about halfway, it kinda seems to drop off in depth a
good bit. I took it out in the backyard just to scan the ground,
and it seemed fairly normal I guess. I did get a few "coin"
hits that read 8 inches + on the scale. The pinpointing seemed
fairly strong, and normal. I'll be able to tell more as I use
it.
I also got the sniper coil, and I think it's gonna be the real
sleeper. That thing hits almost to 6 inches. Solid at 5,
and starts to drop off a bit at 5 1/2 inches..Random hits
at 6 inches, but thats reaching the limit.. But seems to work
real good, and dimes hit about as hard as quarters from the
same depths. You don't see the reduction in dime depth vs big
coins as much like you do the bigger coils.
I didn't get both covers.. They didn't have the 12 inch
coil cover in stock, but I did get the one for the sniper..
The bummer deal is the sniper really doesn't need one much,
as it's plastic on the bottom. The big coil is the one I
*really* wanted a cover for.. I think I'm gonna see if I can
locate one local tommorow. They have a few garrett dealers
here in town.
After trying the big coil, I can say that the stock coil
ain't half bad as far as depth. It's not far behind the 12
coil. If I only had the stock coil, and were to buy only
one of the two, I'd probably go for the sniper first for maximum
versatility with only one extra coil. But I still like having
all three.. I think the big coil will be pretty good for
"old house" relic scrounging when out in the open areas,
and scanning for deeper coins in semi cleaned out areas.
MK

 

[NM5K]

Just curious...Those who have the 9x12 coils...Do any of
you notice it being more prone to noise, if bumped?
I've heard of this before, but not so much with the ace
machines.
I was doing another round of air tests a while ago, and
noticed that. I was unhooking and testing the coils, but
was holding them instead of mounting on the stick, to
save time. I was whipping coins across the coil, and noticed
every time I jiggled the coil, it would false. I hadn't
really noticed this much on the stock coil, but may
test it too in a while to see if it makes noise when
tapped or jiggled. If you all see it too, I'll probably
consider it normal, and not worry about it. But if it's
just me, I might consider sending it to garrett for a check.
BTW, in the last round of tests I was probably seeing about
2-2.5 inches over the stock coil when whipping a quarter in
front of the coils. On my particular machine, the stock coil
is solid through 6 inches, ok, but partial at 7 inches, and
pretty nil at 8 inches.
On the 9x12, I'm solid through 8 inches, partial at 9, but
can still ring it at 10 sometimes. Actually, I've had it ring
at 11 inches if I really whip the coin. But I'll consider it
to be a solid 2 inches, and maybe a bit more. So, the 2-3
inch estimate seemed to pan out here.
BTW, I just thought of this now...I was running my sensitivity
full blast when it does that. I just now tried reducing it a
bit, and seemed to false a bit less when tapped..
Anyone elses false when tapped, if set to a high sensitivity?
When running on the stick, I noticed the movement of the
stick is enough to set it off sometimes. I haven't locked
my rods though...They are still the factory pop lock deals..
It does jiggle a bit.. BTW, I'm talking fairly light taps
or jiggles. I'm not whacking it hard at all. Just the slight
movement of my arm moving cuz my other arm was moving, was
setting it off.
MK