Tesoro RSD 8 X11 coil weight

[Don in SoCal]

I am looking for a posting of the individual coil weights offered by Tesoro. In particular the 8X11 RSD. I'm running the stock 5 X10 on my Lobo ST and it weighs in with scuff cover on at 15 oz,, head only, 1lb 1oz with the long coil wire attached. I went to the Tesoro website and could not find any of this information. Thx

 

[dan b]

1lb 1/2 oz.

That includes the cable.

 

[Don in SoCal]

Thank you Dan, I find it interesting that most detector manufacturers do not post the individual coil weights on there websites. After market manufacturers proudly do so. You would think that the parent company of the detector units would do the same.

 

[Herb Jones]

What kind of performance are you getting out of the LST / 8x11

 

[Don in SoCal]

Herb, I don't have the 8 X11. I would like to try one and compare it to my 5 X10. Rusty claims I won't see much performance gain, I think he's talking in the gold fields. Terry S. is a big fan of the 8X11, I think he is talking in coin/jewelry detecting. I press my LST to do both so I'm looking.

 

[Herb Jones]

I misunderstood... wanted to compare, and see how it worked in your soil... in my dirt I only gain about an inch or so in depth. can't recall the guys name, but he posted a you-tube video of a LST he had tweaked that had impressively enhanced depth performance... (relic hunting in Georgia I believe)... I assume by adjusting the auto ground balance pots. I was going to give that a try... I had even considered trying a 3rd party coil but opted to not after considering the added weight. HH

 

[Monte]

What kind of performance are you getting out of the LST / 8x11

What type of 'performance' are you asking about? I used the LST a lot, more than I did the three Tejón's I had, and compared those two with a Vaquero, but that was before we had the 8X11 RSD DD coil. As for 'performance' I got the best results with all three models using a round, brown 8" Concentric, followed by the 8X9 Concentric, than I did any Tesoro-made or after-market DD coil when hunting old RR ghost towns that are littered with a lot of trash, mainly nails and other small ferrous discards.

For me and the sites I usually hunt, and anywhere from moderate mineralized ground I sometimes search to the highly mineralized ground I spend most of my time hunting in, I have found the DD coils to only help when it comes to side-to-side sweep coverage from surface to about 4" or so. They let me work a cleaner area a little faster than a Concentric design of comparable size.

For depth-of-detection, it's all a toss-up based upon the ground you're dealing with and the size and type of targets you are after. Today I have other makes and models that provide me better all-around depth than any Tesoro I have or have-had, ... however, from time spent afield making comparisons of different search coils on most better Tesoro models, I keep a 6" Concentric mounted on everything except the Mojave that has the 7" coil attached. When I want better coverage in an open area, or better depth-of-detection when conditions allow and target masking trash isn't bothersome, I have my 8X11 RSD on a spare lower rod to use my Vaquero for that assignment.

In very clean areas, and testing in different ground conditions, the 8" and 8X9 Concentric coils come close, matched or bettered the 10" elliptical that came with the LST, and the 8X11 DD coil did get slightly better performance. Maybe an inch, maybe a bit more than an inch, but in most cases it was a little more, making it the coil of choice for that task. Weight and balance aren't bad, and we all need to pick what we feel works best for us, but with a Tesoro, when I want a little 'edge' on depth when in a site where it is achievable, the Vaquero w/8X11 RSD Double-D coil is my go-to set-up. I would think the same might apply to the Lobo ST ... if that is what you mean by 'performance.'

Monte

 

[Herb Jones]

The best I can get out of the LST is with the concentrics... I prefer the 5 3/4". It's what I run almost
Exclusively on the machine. That being said I believe I gain no more that an inch or two At most when using the 8"
And 9x10" ( to me the 9x10" has virtually no advantage over the 8") only slight depth (very slight)... but since the LST isn't a deep
Machine, I run the 5 3/4". But my site are littered with all sorts of stuff, so I can work between the trash more easily. I feel that performance is Subjective. For me I prefer the focus
Of The small 5 3/4" concentric. It works best for me at my dig sites.

 

[Monte]

The best I can get out of the LST is with the concentrics... I prefer the 5 3/4". It's what I run almost
Exclusively on the machine. That being said I believe I gain no more that an inch or two At most when using the 8"
And 9x10" ( to me the 9x10" has virtually no advantage over the 8") only slight depth (very slight)... but since the LST isn't a deep
Machine, I run the 5 3/4". But my site are littered with all sorts of stuff, so I can work between the trash more easily. I feel that performance is Subjective. For me I prefer the focus
Of The small 5 3/4" concentric. It works best for me at my dig sites.

Like you, except for my Mojave that wears the stock 7" Concentric, I keep a 6" Concentric [size=small](Tesoro calls them a 5.75" for some goofy marketing reason that followed White's lead on the concept)[/size], and like you I prefer the 'focus' as well as the 'depth', 'pinpointing ability' and 'better Discrimination in iron', over the DD coils. I agree, any depth-of-detection gain with the 8" or 8X9 over the 6" Concentric isn't much, especially in a more trashy condition site.

Monte

 

[Mega]

Must admit have never really liked the 11x8 coil on my UK version of the Vaquero,it does give you 'some' extra ground coverage but it just does not perform as i had hoped for it,the coil that i use and keep on this machine all the time is the NEL Snake 6.5''x3.5'' i find it works a treat on my trashy roman and saxon sites that can be littered with a few 1000 years of trash especially on deserted medieval village site,that is when this detector/coil combination comes into its own,really like using it then,in theory a small Concentric coil would prehaps work better as it works best on the Tesoro discrimination system,but saying that the reason i went for a DD coil is that some of these sites have a high mineral content and this is when a DD coil works best.

The 11x8 coil just sits in the cupboard basically brand new gathering dust,i doubt that i will ever use it again as i prefer other detector coil combinations for open clear pasture or deep ploughed sites,the Vaquero which i have is running 18.5khz and with the small coil on is deadly on our small hammered coins,also another plus side of using such a small elliptical coil is when the crops come off i can get in between the tough wheat stubble and also the worst crop the dreaded 'oil seed rape' when that crop is cut they leave stalks that are like cane's upto about 6-7'' tall as they only want the seed of the crop not the stalk.

If i have extreme trashy sites and depth is not a issue then i use the 4'' coil on my Laser B1/B3 machines,no depth but you can certainly pull small coins out that hardly any other combination will work apart from the T2 and the small 5'' coil,that will give extra depth but this thread is about Tesoro based machines.

 

[Don in SoCal]

Monte , Herb and Mega, Thank you all for your responses, I highly value your input. I have both the 5.75 Concentric and the 8 X9 OOR Concentric coils and use them depending upon the site and ground type that I am working. They are great coils when placed into service in the right environment. I was seeking real world opinions on the 8 X11 RSD and for that I am greatfull.
A note to all of you, Mega has a modified Vaquero running a NEL Snake with good report. Rivers Rat has a modified UK version of the LST running a NEL Snake on the Thames River with good results. I have a USA factory spec. LST running a NEL Snake coil on it and it ..will not ground balance... in the All Metal mode. In Discriminate Mode it functions fine, responds much the same as the 5.75 C. But in AM, pumping the coil repeatedly... down stroke, no sounds... up stroke, loud report... It is my belief that the microprocessor in the stock LST does not have the dynamic circuitry capable of ground balancing or ground tracking for this size of coil. I had this coil tested on a Vaquero and it worked very good. Thoughts?

 

[Herb Jones]

My batteries died in r rig, so i used the 8 x 11 RSD on the LST today, went back with the small concentric in the trashier areas. i always run my LST hip mounted.... the RSD did fine... I covered a little more ground at quite a bit faster... my targets weren't deep so the added depth didn't come into play... The coil balanced and worked well.. weight certainly wasn't an issue.. nothing negative about running a rig hooked up like that... worked for me.... not sure i would drop cash on the coil if i didn't already have it for the vaquero.

 

[Monte]

I have both the 5.75 Concentric and the 8 X9 OOR Concentric coils and use them depending upon the site and ground type that I am working. They are great coils when placed into service in the right environment. I was seeking real world opinions on the 8 X11 RSD and for that I am greatfull.

My preferred coils, especially on Tesoro's, are the Concentric types. I do have the 8X11 ESD Double-D coil for my Vaquero, and I use it in open areas that are low on target count with trash well spaced apart. It can provide me a little better side-to-side sweep coverage on shallower targets, and where target masking isn't an issue, I can get a little better depth with this coil. If working a trashy sites, especially iron littered, such as a dense iron nails condition, I would prefer the 8X9 'OOR' Concentric coil to the 8X11 DD.

For me, I have search coil size and performance needs met with my Nokta and White's models, if I am wanting to use a 950 Concentric or 7X11 DD, 13X15 DD or 14X15 DD just for coverage and depth. The 8X11 RSD DD from Tesoro is a good coil, but my Tesoro units are primarily used with smaller coils, such as the 6" Concentric on the Vaquero and Silver Sabre [size=small]micro[/size]MAX and 7" Concentric on the Mojave.

A note to all of you, Mega has a modified Vaquero running a NEL Snake with good report. Rivers Rat has a modified UK version of the LST running a NEL Snake on the Thames River with good results. I have a USA factory spec. LST running a NEL Snake coil on it and it ..will not ground balance... in the All Metal mode. In Discriminate Mode it functions fine, responds much the same as the 5.75 C. But in AM, pumping the coil repeatedly... down stroke, no sounds... up stroke, loud report... It is my belief that the microprocessor in the stock LST does not have the dynamic circuitry capable of ground balancing or ground tracking for this size of coil. I had this coil tested on a Vaquero and it worked very good. Thoughts?

As for your LST and NEL coil performance, yes, the Lobo SuperTRAQ appears to not be adjusting propely if it stays silent on the down-stroke but 'beeps' on the uplift of the coil away from the ground. That would indicate the GB is too negative.

The cause could be an issue with the Lobo ST, but I would first try to check that NEL Snake coil with another LST just to be sure. It could also be a search coil problem and not the detector.



Monte