To scrub or not to scrub

[Outback]

Scrubing slows you down , less ground checked = fewer nuggets found .

 

[Bjay]

That's the age old question , slower less missed faster more ground covered , more found, I'd love to know the answer to that one.

 

[Outback]

That's the age old question , slower less missed faster more ground covered , more found, I'd love to know the answer to that one.

Best way to get an idea of this ' get a page of A4 paper ( gold field ) & start drawing lines with a biro to see how long it takes to cover all the paper with no white showing

 

[walshie1000]

Simple logic and equation for me.
The gold is in the ground, my detector tells me when its there.
The further my coil is from the ground the further it is from the gold.
The higher the coil=missed gold in some cases.
There will always be situations where running your coil on the ground is hindered. That's why when we find a patch, we rake, knock out tussock etc. We all know that the closer the coil to the ground = more penetration depth wise.
A signal that is barely audible at a coil height of 5mm above the ground can and will be heard easily if the coil is 5mm closer to the target hence on the ground.

 

[RM Outback]

thought this maybe of interest I thought i would go to someone who should know and so I asked Rohan from Nugget Finder this is his email

To Scrub or not to scrub...that is the question

My opinion...

Scrub When you Can... When the ground Mineralisation is light and the extra noise induced by close ground contact is minimal Scrub Away!

Raise the coil a little when required... When the Mineralisation levels are high and close contact is creating excessive background noise that could mask faint target signals, Raise the coil a little. Especially when seeking deeper gold with a large coil.

Heres the Thing - It really depends a lot on how good (Experienced) you are at picking out target signals from background noise.

Note Flat Wound Coils will saturate easily in Highly Mineralised Ground.

I was in a hurry...Hope it made sense...

Cheers
Rohan

found this very interesting and I think I will try it when i get out again, as i am in the GT and the ground is very mineralised so will see what it brings once the friggin rain stops lol

Thanks for posting PP. Using NF coils atm, I'll follow the above and see how it goes, its a bit like how I operate or would like to think I do, now I'll use this to check reference myself anyway. The mention of scrubbing seems to give people the impression people who do this are trying to find China in 15 minutes after start up. Skidding IMO or the phrase I choose to use instead is using the surface as a guide, wont suit every circumstance/environment though. your initial question is a great question and reply's are equally as good.

 

[Solid Luck]

I'm a recent scrubber.
I love sweeping the bush.

 

[casper]

NB: the GMZ is a 18Mhz VLF detector.

18Mhz no wonder its touch sensitive :lol:
I think you'll find it runs at 48khz. From memory I used to scrub the coil on my GMT & had no major touch sensitivity issues unless bumped hard on something?

I'm a scrubber but depending on coil, machine & terrain tend to be fairly light. In highly mineralised ground lifting the coil a bit can settle it down (as per above from nuggetino) & for the GPZ it's recommended to not scrub the coil in those conditions. In rocky terrain you may not have a choice with the GPZ14 coil anyway & I've also seen a tip that running in fixed can be better in this type of uneven terrain.

I've seen & heard of many heavy handed scrubbers wearing out numerous skid plates + also causing other damage such as damaged coil lugs, worn/damaged knuckle SDC & I reckon it's also a factor in broken GPX handles (along with overtightening).

oops! was going from memory and referenced back to the wrong machine. Googled the operator manual and 50khz is pretty much spot on (48khz actually)

thanks for the correction

casper

 

[GypsyGoldAu]

I run a 4000 and use it like a bulldozer....when on new groung i usually use the 11" mono and can go through about 7-8 coil covers a year.

At a bit over 1/2 a gram each, i don't consider it a cost when compared to the returns. I use more in fuel just getting there at times...pffttt...

GGA

 

[Pirate pete]

What a great response glad to see that the informed on the forum have added so much to this post