Wouldn't it make more sense to have a switch on the Surf PI Dual Field

[bdahunter]

That allows you to switch between the dual coil design, 6" and 12", to just the 6"? It would make pinpointing much easier I should think. Run both coils for coverage and then switch to the 6" to pinpoint, it seems so obvious so I wonder why it wasn't designed that way.

Any thoughts or am I out in a technological left field?

BDA

 

[rehless]

I agree with that. Would help with pinpointing when I'm fanning a hole you could garage a VW in.

 

[Carl-NC]

That won't work the way the coil is designed. The two sub-coils are in series.

- Carl

 

[bdahunter]

That won't work the way the coil is designed. The two sub-coils are in series.

- Carl

Thanks Carl,

That's what I was wondering, in series or in parallel. This of course makes me wonder if it would be possible to run them in series?

 

[Eric Foster]

Pinpointing on the previous Surf PI's was good, and the dual coil should make it even better. The improvement has been reported by others, so I'm surprised there is a problem in this area.

Eric.

 

[bdahunter]

I'm finding that on the deeper targets where you have the coil in a big hole it is really tricky trying to pin down the target. The DF is a deep seeker, especially when you run it maxxed out but the coil is harder to control when trying to pinpoint in the surf, could be the bouyancy, could be the size of the coil. The Excal 1000 is much easier to pinpoint with and the coils only slightly smaller so my thought was that the 6" coil operating independently would make pinpointing easier.

Thanks,

Eric aka BDA

 

[Eric Foster]

Hi Eric,

Yes, I agree it is a problem with a big coil down in a hole. I wonder though if the situation would be much improved if you were able to just switch in the small inner coil? You are still limited in moving around in the hole by the outer, inactive, coil. A better solution would be to have a small diameter probe in a 3ft long shaft, that you could switch in instead of the main coil. Poking that around in the hole would soon find the target. If it was a ring and the end of the probe was tapered, then you could home in and spear it, a non return barb stopping it sliding off. Patent just applied for

Eric.

 

[bdahunter]

Hi Eric,

Yes, I agree it is a problem with a big coil down in a hole. I wonder though if the situation would be much improved if you were able to just switch in the small inner coil? You are still limited in moving around in the hole by the outer, inactive, coil. A better solution would be to have a small diameter probe in a 3ft long shaft, that you could switch in instead of the main coil. Poking that around in the hole would soon find the target. If it was a ring and the end of the probe was tapered, then you could home in and spear it, a non return barb stopping it sliding off. Patent just applied for

Eric.

 

[Eric Foster]

Well, I have been making probes for years and they work fine. A 3/4in diameter one can detect a nickel at 4in with a PI circuit. The only problem would be fitting a waterproof switch and another cable gland on to the Surfmaster. Paul Palomo in California has done it, I believe, and posted a picture a while back. The bit about catching rings was just a thought that came to me while typing the previous reply. Might work though.

Eric.