Author Topic: Do you gain anything by reducing a detectors sweep speed ???  (Read 4299 times)

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DaveJ

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Re: Do you gain anything by reducing a detectors sweep speed ???
« Reply #15 on: August 21, 2015, 10:01 am »
@muddy fingers,interesting that you have mentioned about the Concentrics being better for giving a signal from both directions,that does make alot of sense as i have a B3 with a Concentric coil and that does exactly as you have mentioned.

muddy fingers

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Re: Do you gain anything by reducing a detectors sweep speed ???
« Reply #16 on: August 21, 2015, 11:24 am »
Hi DaveJ, yes, I hadn't really thought about it much until I read Such Much's comment in the other thread, (it's in this bit of the forum) What they used to call the "widescan" heads like on the Tesoros were 2D athough they looked identical to the concentrics from the outside as they were solid. The concentics do concentrate on a small cone shape of ground at a time though which is good for in the iron junk and better ID'ing but it does make for worse ground coverage and so overlapping of the swing is important. I used to notice that a friend using the T2 (2D coil) in a relatively clean field got a lot (X10) more signals than me even when we were in the same bit of the field. I may well have done better in a more iron contaminated area I suppose, but as I say, it was something that I hadn't realy given much thought to before. 

DaveJ

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Re: Do you gain anything by reducing a detectors sweep speed ???
« Reply #17 on: August 26, 2015, 04:26 pm »
Over the last few days have been out and reduced the swing speed down by a fair amount and my personal opinion is that it certainly does help,could it be the fact that it gives the detector just a little extra time too decipher the signals better that i am not 100% sure but it could well be the case.

Have also seen a few folks with not only the coil way off the ground but swinging like a pendulum and then they start complaining that they have found nothing.

coenwolf

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Re: Do you gain anything by reducing a detectors sweep speed ???
« Reply #18 on: August 31, 2015, 02:41 pm »
i think after a few weeks with the t2se what i need is not the ability to slow down but someone to come and dig the holes for me .finding far to much  :P

DaveJ

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Re: Do you gain anything by reducing a detectors sweep speed ???
« Reply #19 on: August 31, 2015, 05:11 pm »
i think after a few weeks with the t2se what i need is not the ability to slow down but someone to come and dig the holes for me .finding far to much  :P

Jeff,thats exactly what i am finding,currently using the small 5'' coil on the T2 as most of my land still has stubble but saying that after all this rain it must start rotting off i would have thought.I still have my Deus,but after playing around with it using the 'Cold' settings it really is starting too grow on me again.

So although in theory i was just going to keep one and that was the T2,may keep the Deus as well,not been out today due to the bad weather but as soon as its brightens up during the week will be out most evenings.

Flossyrockstar

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Re: Do you gain anything by reducing a detectors sweep speed ???
« Reply #20 on: September 04, 2015, 08:17 pm »
if i remember correctly the dfx has a adjustable sweep speed section ,i don't think it actually did anything that made any difference though

It did Jeff, it made your arm ache more!!! :-)

coenwolf

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Re: Do you gain anything by reducing a detectors sweep speed ???
« Reply #21 on: September 04, 2015, 10:09 pm »
lol pete ,you had a look at the sigma sport yet  :P

goldfinger

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Re: Do you gain anything by reducing a detectors sweep speed ???
« Reply #22 on: September 06, 2015, 12:00 am »
Good post, any seasoned detectorist will always reduce the sweep speed once a hot spot is found, or if detecting a worked out site.
Works every time.
Goldfinger59

sanjurok

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Re: Do you gain anything by reducing a detectors sweep speed ???
« Reply #23 on: September 08, 2015, 02:36 am »
In our club we have a few fast n furious swingers and they do very well one lad in particular with his Deus goes like the clappers with his coil front pointing up as well and he has found shed loads of things, another has a CTX3030 and he swings it so its 2 feet off the ground at either side so it only goes near the ground in front of his feet and he has found gold hammered and much more than me with my slow and low swing it all comes down to luck at the end of the day really and they just seem to have it.

SuchMuch

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Re: Do you gain anything by reducing a detectors sweep speed ???
« Reply #24 on: September 08, 2015, 07:58 am »
In our club we have a few fast n furious swingers and they do very well one lad in particular with his Deus goes like the clappers with his coil front pointing up as well and he has found shed loads of things, another has a CTX3030 and he swings it so its 2 feet off the ground at either side so it only goes near the ground in front of his feet and he has found gold hammered and much more than me with my slow and low swing it all comes down to luck at the end of the day really and they just seem to have it.

These are different tactics. If you at new field with Minelab/XP Users, the main goal is to collect surface/close to surface obvious targets which would not be missed by any detector. Low down Gain/Sensetivity and swing quickly  ;). When this field is cleaned from surface finds, add Gain/Sensetivity and swing thourougly  8).

DaveJ

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Re: Do you gain anything by reducing a detectors sweep speed ???
« Reply #25 on: September 08, 2015, 08:47 am »
Sometimes you just dont have the time to go slow,one of the best examples would be say when you are on a club dig or a rally,then you only have say about 7 hours as a one of time duration to hit that site,so the best tactic would be if of course you own a large coil would be use that to give you more ground coverage,this may not be the best tactic but i dont pesonally think such a site can be done any other way.

Then we move onto our own permission,this situation allow us to be much more methodical in our approach as we dont have a clock ticking against us,then we can use a smaller coil and take much more time to cover the are with a smaller coil and then once we feel it has been covered then start using a slightly larger coil.Of course this method/scenario is based on if the detectorist has a few coils,but i feel that this method in the long run will produce the best results,that is of course if finds are in that location.But just by using a large coil straight away will i feel give you alot of 'nulled' signals.

So if i go on say a days rally then i would tend to use a slightly larger coil and slightly increase my sweep speed but on my own permissions i would slow down and on some occasion have seen snails over take me,but they have usually produces some of my best finds.

pryorcreekjoe

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Re: Do you gain anything by reducing a detectors sweep speed ???
« Reply #26 on: September 10, 2015, 08:32 pm »
Anyone who has owned an Minelab Explorer and done well with it, knows correct sweep speed.  It's now about how fast you cover the area, it is about how well you cover it.  And slow is always better than fast.  Tried and true!

goldfinger

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Re: Do you gain anything by reducing a detectors sweep speed ???
« Reply #27 on: November 20, 2015, 10:49 pm »
  Here's a typical example of going really slow with an Etrac on a very well detected small pasture field that has now given me 11 hammered over the last 2 years........

Just been out this week and pulled this small hammered up from my favourite site, it looks like an Elizabeth 1st half groat London mint 1582 - 1602.
This site has been done by just about every detector known to man over the past 2 years, so I put the Etrac on full sens and full Volume gain in MTC, and a one pence sized block of discrim in the right hand bottom corner, also turned both recovery deep and fast OFF. Most important thing was I worked very slowly, it's surprising how many tiny blips you can miss going too fast.
I found 6 buttons and various bits of small lead and brass fragments over a 3 hour session, and the hammered was a barely audible low grunt but it was a repeatable signal when cross swept, if I had been going a bit faster it would have been missed. Only thing that spoilt my day was the detector started giving false signals after 2 hours, especially when I held the coil up in the air on it's edge . This can only mean one thing, water in the coil, I have had this happen to me before on the original stock coil and it had to be replaced, looks like I will be buying a new Ultimate pretty soon, at least I can put the original coil back on for now though.
Goldfinger59