northwest Flat Wound Vs Bundle Wound Coils
Welcome, Guest. Please login or register.
Sunday February 23 2020 00:11:02 AEDT AM
Home Help Login Register
News: Welcome to the Australianelectronicgoldprospectingforum founded in July 2010, an add free totally independent forum with over 70 boards and paid for and managed by the Admin.Topics: 9,612  Total forum Posts:47,584 Members:881. Total page views:12,976,190  Admin and  forum and domain name owner :marjen at optusnet.com.au. Guests can only see a limited number of boards at present and cannot see any hot links. Guests cannot post and never will be permitted too!Registration of new members must be approved by admin.
 All  original Photos and posts and  original materials displayed on this site are COPYRIGHTED and remain the property of the poster and the  Austalian electronicgoldprospectingforum.com. All messages on this forum express the personal views of the author and should not be interpreted as necessarily being in accord with those of the forum owner and neither the owner of this forum and its domain name nor SMF or the forum software developers or the forum host shall be held responsible for the content of any message. Admin reserves the right to remove any offensive or objectionable posts. No defamatory material or politics/religion or issues of race will be permitted.
Admin:Doug Moderators:Goldman and Bugwhiskers
QED news
QED on facebook
link-https://www.facebook.com/groups/245308699667153/403446933853328/?comment_id=403472030517485&reply_comment_id=403476793850342&notif_id=1562580344994993&notif_t=group_comment
Interfacion Pty Ltd is pleased to announce that the QED PI Detector has been modified to allow the use of DD (double D) coils. This change involves a simple change to the electronics within the control box.
The firmware has also been upgraded to include a further improved Ground Balance.
All detectors being delivered to new customers from Monday 5th August 2019 will already have the above upgrades included.
As a show of commitment to all QED owners, the hardware modification to allow use of the DD and CC coils will be provided at no cost.
Of course and as per the QED warranty, the firmware update is provided free of charge, except for P&H.
Any QED owner who plans to attend the Laanecoorie Bash is encouraged to bring their detector along and have it upgraded at no cost.
Standard postage and handling arrangements apply to other owners. Send via Australia Post the box (minus batteries) along with a pre-paid, pre-addressed bag/box to:
Interfacion Pty Ltd
PO Box 106R
Redan VIC 3350
Howard Rockey
Director Interfacion Pty Ltd.

australian electronic gold prospecting forum.com  |  Detector Technology and Electronics and new detectors  |  Detector Coils (Moderator: Goldman)  |  Topic: Flat Wound Vs Bundle Wound Coils 0 Members and 1 Guest are viewing this topic. « previous next »
Pages: [1] Go Down Print
Author Topic: Flat Wound Vs Bundle Wound Coils  (Read 709 times)
GARY
invited members
Hero Member
****
Offline Offline

Posts: 602


« on: Wednesday April 11 2018 10:56:57 AEST AM »

I have been following a discussion on Finders for some time now and a recent discussion got me thinking in regards to the flat wound type and the bundle wound type mono coils.

From what is being said between two members of the forum one appears to be saying a smaller diameter flat wound coil mono is capable of matching a larger diameter bundle wound mono whereas the other is saying the opposite that the flat wound coils are equivalent to a smaller bundle wound coils.

Therefore as is my addition with testing and since I have both a round 12" flat wound mono and a round 12" bundle wound mono I would run an air test between both coils with my QED using 5 nuggets, a 0.2 gram , 2 gram, 23 gram, 78 gram and 103 gram.

The result using the exact same settings showed both coils produced the same response and depth on the 3 larger nuggets with the flat wound producing the best response and depth on the 2 smaller nuggets.

Some food for thought I suppose although another air test result with a 3oz wire gold & quartz specimen that a member refers too in another thread on this forum it appears a smaller diameter flat wound mono (19") matched a larger diameter bundle wound (25") using a GPX in FG timing and then the 19" flat wound only fell short by 1" to the 25" bundle wound using Normal timing on the same specimen.

Now whether this result was due to the type of specimen nugget used in the air test and would the result be different if using a solid type 3oz nugget as I used for my test I cannot say. Although the GPX does seem to be more sensitive to the more solid type nuggets than the more porous prickly type nugget.

May have to test my GPX using both 12" type coils when next out on the goldfield as no hope while within city limits compared to the QED.

Also I would say as you increase the size of a nugget the 25" bundle wound coil would then increase more depth wise than the 19" flat wound.

Gary.
Logged

"The more you know, the more you know you don't know."
Alex
Newbie

Offline Offline

Posts: 69


« Reply #1 on: Wednesday April 11 2018 16:37:45 AEST PM »

Hi Gary.That was interesting. I posted a method I was going to try on this forum winding a double flat mono using mosaic mesh and am pleased to say made winding with litz a lot eaier .I haven't shielded it yet but I have a stacked momo 5x5 layeres which I will compare with.On a post by IB gold post 431 need for big deep gold detectors Are specs for a 12 inch evo coil at 510 kHz .I would have thought they would have a much higher resonate frequency.
Logged
GARY
invited members
Hero Member
****
Offline Offline

Posts: 602


« Reply #2 on: Thursday April 12 2018 11:25:20 AEST AM »

The discussion and build of the coil in "The need for big deep gold detectors" thread seems to be taking a long time to complete and to be eventually tested out in the field.

Using flat wound winding for both the separate Transmit and Receive coils instead of the normal bundle wound in concentric type coils, then it will be interesting to read of its results when it finally gets to be field tested.

A nuisance and difficulty that I have with the flat wound type coil is trying to pinpoint a target still in the ground compared to the bundle wound type coil, more so when the target is small in size as the sensitivity to that target is close to the inner windings. The bundle wound type coil allows you to tilt the coil more so edgewise for a more accurate pinpoint.

However as the target increases in size it allows you to pinpoint more towards the outside winding of the flat wound mono coil.

Not sure how much harder a flat wound concentric coil will be to pinpoint although I expect one would not be chasing small targets as the name of the thread mentioned above implies.
Logged

"The more you know, the more you know you don't know."
Pages: [1] Go Up Print 
australian electronic gold prospecting forum.com  |  Detector Technology and Electronics and new detectors  |  Detector Coils (Moderator: Goldman)  |  Topic: Flat Wound Vs Bundle Wound Coils « previous next »
Jump to:  


Login with username, password and session length

Powered by MySQL Powered by PHP Powered by SMF 1.1.21 | SMF © 2006-2009, Simple Machines
Simple Audio Video Embedder

BisdakworldClassic design by JV PACO-IN
Valid XHTML 1.0! Valid CSS!
gold