New for 2017. Carbon Fiber search coils for Nexus Standard MP.

[Sean_Goddard]

WOW!! Nice.

[Funfinder]

btw. the "ears" of such 1m coil really must be extremely stable
because of the leverage-forces this is THE neuralgic point !!!
If I interpret the pictures correctly so far those "ears" are
not stable enough because they are to thin and also should be
really thick at the base where they touch the coil (ca. 1-1,5cm).

And I don't know how easy it is to fix carbon fiber.
I have my doubts this works with superglue or soldering iron.


Funny idea: with some waterproofed protection cover
the coil also is useful in times of need as umbrella!

[Skippy]

Those clevis ears look vulnerable to me, as well. I would've liked to see bigger ears, wider spaced, and a special lower shaft to go with the coil.

[Nexus]

Those clevis ears look vulnerable to me, as well. I would've liked to see bigger ears, wider spaced, and a special lower shaft to go with the coil.

All Nexus coils except this one are made with Glass Fiber ears. There is not even one broken Nexus coil Glass Fiber ear for all times by now.
The ears on the 1 meter coil are made out of 2.5mm thick Carbon Fiber, which is many times stronger than Glass Fiber. They are impossible to break, period.

[Nexus]

btw. the "ears" of such 1m coil really must be extremely stable
because of the leverage-forces this is THE neuralgic point !!!
If I interpret the pictures correctly so far those "ears" are
not stable enough because they are to thin and also should be
really thick at the base where they touch the coil (ca. 1-1,5cm).

And I don't know how easy it is to fix carbon fiber.
I have my doubts this works with superglue or soldering iron.


Funny idea: with some waterproofed protection cover
the coil also is useful in times of need as umbrella!

You really need to read more about Carbon Fiber, before running to any conclusions.

https://en.wikipedia.org/wiki/Carbon...forced_polymer

[Funfinder]

And you should not ignore all the other things I have written including
not answering about them just because you are angry and convinced
that such thin ears of 2,5mm carbon fiber are absolutely unbreakable.

[Funfinder]

Unbelievable how perfect this fits - by pure coincidence I found this article:

New Materials Have Advantages Over Carbon Fiber For Bike Frames
http://www.forbes.com/sites/kevinmur...or-bike-frames

because it came directly attached after this here:
http://www.forbes.com/sites/insertco...d-watch-dogs-2

Seems that carbon-fiber breaks even easily!
But there is help in sight with better materials
as the article tells.

Carbon fiber’s main drawback is that it’s brittle, it breaks easily. Moreover, carbon fiber damage may not be visible because of the way carbon fiber bikes are constructed. Carbon fiber frames and components are made by bonding strands (called “plies”) of carbon fiber with epoxy resin. Internal layers, or the bonds between layers, can be broken without any visible damage if the outer layer is intact. The result is an unblemished but weakened frame that can fail catastrophically at unexpected moments.

[Nexus]

Unbelievable how perfect this fits - by pure coincidence I found this article:

New Materials Have Advantages Over Carbon Fiber For Bike Frames
http://www.forbes.com/sites/kevinmur...or-bike-frames

because it came directly attached after this here:
http://www.forbes.com/sites/insertco...d-watch-dogs-2

Seems that carbon-fiber breaks even easily!
But there is help in sight with better materials
as the article tells.

I am an ex professional cyclist and quite well informed on what happens with a bicycle. A bicycle have to hold a human body (a considerable weight) in high speeds often up to 100kph, in which case the stresses on the bicycle frame will be enormous considering that most bicycle frames are manufactured from tubes barely a 1 mm thick.

On the other hand the 1 meter coil design is only 1.4kg (with very low G force acting on it and no extra weight on top) and there are two attachments , with combined thickness of 5 mm of Carbon Fibers composite. Considering that the tensile strength of CF composites is higher than many steel alloys it will be real hard to pull them out or break them. The attachment ears on this coil will hold your entire body weight without any problem at all.
Here is a more proper article that explains in a scientific manner property of materials including Carbon Fiber.

https://en.wikipedia.org/wiki/Ultimate_tensile_strength

And something else.
Nexus is the sole manufacturer worldwide of huge search coils for IB detectors the largest of them been and still is the Nexus Exselsior a dual 1 meter OO search coil with a weight of 4.5kg and retail price of 15000 Euros (not advertised on the Internet).
None of our customers have ever broken those glass fiber coil ears. Not on the coil below or any other smaller one.

[Funfinder]

Good, when you can assure enough trust and seriousness for your products inclusive used materials
everything is fine but you also must understand that people first need to be well informed about
such "wonder-materials" because as we see with those bikes, they were not produced stable enough
even if they should be and the producers are also telling how safe and worth the high price they are!

I don't care if those ears are 2,5mm thick or 5mm as long as they make no trouble sometimes.
Same with the thickness of the coil - but of course the more lightweight and still stable the better.
But they must be also not too thin and fragile because this way neither you nor your customers have fun.

So perhaps it would be the best if you add some flyer for the detectors and some pdf on your site
which explains like for Teflon etc. the special abilities of the materials you are using so nobody
is concerned that the coils etc. could break, just because they are looking already very fragile.

Because there exist also different types of carbon fibers - some are more flexible while other are stiff and brittle.

Another question would be the tested temperature range for carbon fiber coils because some of the plastic-coils are
breaking pretty fast when its cold outside! Of course this must not be the same with carbon-fiber but such
material-properties are also important to know before anything unwanted happens.


I know, all this is not easy for you !!

But its better if someone like me cares before it could be already too late.
As with those exploding Samsung batteries etc.

[Nexus]

The new 20"DD Carbon Fiber coil is on the way. The weight of the prototype is only 690 grams, which is the same as our 13"DD coil.
The Nexus MP with 20"DD coil

The 20"DD coil next to 13"DD for comparison.

[Funfinder]

Well then, I am open for suggestions.

The coils profile resembles a wheel of an ancient chariot, so how about a Gold Chariot or a Grand Chariot?