Carbon coils

[Doug]

Carbon coils
I have spoken to the person that makes these coils and he would like to correct a few of what he claims are misconceptions and misinformation about his coils that have been posted on this forum. I gather that the coils are wound by Woody from his litz wire or other"exotic materials?"and carboncoils then puts them in the carbon fibre shell and attaches them to the carbon fiber shafts.
So here is the link to his site so that you can make up your own mind. He is also welcome to join the forum and answer any questions members may have or will do so on his web  site.
http://www.carboncoils.com/using-large-coils/
doug

[Doug]

Carbon coils
I have spoken to the person that makes these coils and he would like to correct a few of what he claims are misconceptions and misinformation about his coils that have been posted on this forum.
So here is the link to his site so that you can make up your own mind. He is also welcome to join the forum and answer any questions members may have or will do so on his web  site.
http://www.carboncoils.com/using-large-coils/
doug

If the person that makes these coils is willing, then I am sure that I can arrange for them to be independently tested here in Victoria at the test site and over a variety of ground types including  some very extreme mineralized ground. The maker of the coils did say to me that it essential that if they are used that all the ML shafts must be carbon fibre.
doug

[Doug]

Carbon coils
I have spoken to the person that makes these coils and he would like to correct a few of what he claims are misconceptions and misinformation about his coils that have been posted on this forum.
So here is the link to his site so that you can make up your own mind. He is also welcome to join the forum and answer any questions members may have or will do so on his web  site.
http://www.carboncoils.com/using-large-coils/
doug

If the person that makes these coils is willing, then I am sure that I can arrange for them to be independently tested here in Victoria at the test site and over a variety of ground types including  some very extreme mineralized ground. The maker of the coils did say to me that it essential that if they are used that all the ML shafts must be carbon fibre.
doug

The question I have is what is the physics or electromagnetics that would ,as the maker claims on his web site, make these coils superior to what we currently are using in very large mono coils?
doug

[Doug]

 If these coil have been tested in the  goldfields for some weeks then what did they find and at what depth?Were they tested side by side with same sized mono from another manufacturer (NF for example i think makes a 24" mono?). If so what were the results? At the moment it appears that the only tests results are from the maker ie someone who has a  vested interest in  promoting the coils!Lets see some independent test results!
doug

[Doug]

I wonder if the carbon fiber  used in these coils is thermally and electrically conductive? If so is this a desirable property for a coil? We also don't know if the coil windings are potted which is desirable in my opinion as it totally prevents any movement of the windings,the light weight of the coils might suggest that they are not potted?
Many questions but few answers!  Lets hope that they are answered on the web site!
Carboncoils may also wish to address some issues raised in this thread:eg Re: New range of Carbon Fiber Coils
Post  Tributer on Fri Aug 26, 2011 9:21 am
"Oh no...Another new product with vague specification, unsupported claims of outstanding performance and a very unproffesional product launch."
http://golddetecting.4umer.net/t5921-new-range-of-carbon-fiber-coils
doug

[WM6]

[
I gather that the coils are wound by Woody from his litz wire or other"exotic materials?"and carboncoils then puts them in the carbon fibre shell and attaches them to the carbon fiber shafts.

Woody bypass manufacturing:

"You can also order through Link Technologies. Contact Woody at Link Technologies in Melbourne with the details at the bottom of his contact page here."

[Doug]

[
I gather that the coils are wound by Woody from his litz wire or other"exotic materials?"and carboncoils then puts them in the carbon fibre shell and attaches them to the carbon fiber shafts.

Woody bypass manufacturing:

"You can also order through Link Technologies. Contact Woody at Link Technologies in Melbourne with the details at the bottom of his contact page here."

What do you think about the coils being attached on the outside?I personally don't like the idea and no other coil maker does it.
doug

[Huego]

I wonder if the  carbon fiber used in these coils is thermally and electrically conductive? If so is this a desirable property for a coil?

doug

One of our US forum members is manufacturer of carbon fiber coil rods (replacing the Al connecting rod) for detectors with something lighter and stronger. I bought one and I recall he said its and carbon fibre containing epoxy was electrically nonconducting and did not interfer with coil sensitivity etc. I could be wrong, But that was in a rod, not fibre used in coil. Thermal and electrical conductivity data for carbon fibre should be readily available.

Here is a bit of general info from a supplier.......

http://www.tohotenax-eu.com/en/products/whats-carbon-fiber.html

it says its is non magnetic
has high electrical conductivity (conflicts with the above)
low thermal conductivity
used for antennas

Huego

[The Modern Day Prospector]

I will be testing this 25 inch carbon coil, at some extensive diggings out Mt Perry way.


Carbon Coils are made by Chris Barrett using Litz wire you know the rest.

[The Modern Day Prospector]

Update the Carbon Coil will be tested with a Minelab GPX5000.

[Doug]

Update the Carbon Coil will be tested with a Minelab GPX5000.

Thanks! But i am still waiting for the maker of these coils to tell us why( based on EM physics) these coil will be better (go deeper) than any currently available  mono coils. Those that i have spoken too that really know about coils and ML detectors ask me :what is the physics behind these coils that gives then the claimed advantages? The info has not been forthcoming on the  website!
doug

[The Modern Day Prospector]

Chris needs to get somebody to do this for him a proper test at maybe your spot you blokes go to. I am doing a Video for him so I would have to say it's not really a test, but more a promo out in the field.


Cheers Brian.

[kris]

Me thinks maybe the only advantage is weight