Garrett GTI Eliptical beast!

[ivconic]

Here is gift for Garrett enthusiasts;
I needed large,nice coil housing to make powerfull coil for TGSL.
So i buy Garrett Eliptical coil,expensive but very good...probably
best coil for GTI series! There is housing made of good stiff plastic
alloy and coil inside. Coil is coated with graphite mass, very thick
so it fill up housing complete. Graphite is mixed up with some softer
mass and it make it more resistive on eventual shocks...sort of elastic.
Dont have clue what is this....
So...
I took chance to complete copy this coil datas and save for good!
So, Garrett enthusiasts...you own me!
65 turns (0.43mm with varnish) 0.4mm wire,
58 turns (0.26mm with varnish) 0.23mm wire...
Obviously it is DD coil.
The rest of wirements inside is almost the same as on Scorcher coil.
There is 680k resistor, few capacitors .....You should already been
awared of Garrett coils arrangements....
With this coil on Garrett GTI2500 is quite different machine!
Very sensitive on small items,preferably coins...also reach great depths!
Much better than Scorcher coil which came as standard...
It is not imaging coil...same as Scorcher..
Coil si made in such hi-profile manner, so hard to repeat its quality
so i am hoping guys from Garret would not be pissed up much on me, cose
posted this here...It will be very hard to make handmade which will reach
original coil performances....Good luck!

Regards!

[J_Player]

Hi Ivconic,

Excellent information! Did you measure resistance and inductance before opening coil? Maybe good idea to cut a square slice from the coil and polish it. Then photograph so we can see a cross section of how they wound the wires. Any information on the resistor and capacitors, how to connect? Also maybe good idea to measure resistance of black mass shield material for 1cm length.

Best wishes,
J_P

[ivconic]

..

I am a bit off this Garrett thing. Eliptical coil is
busted. I used only plastic housing from it.
All wirement was in a small bulky,glued piece.
I started to pull out components and destroy all.
But it is the same setup as on Scorcher coil.
I have schematic of it here.
Did i mentioned 680K resistor? Now i lost it somewhere
and looking on this schematic i dont see it,just 390K...
Sorry,this coil was not my primar target so idint payed
any attention on it when reassembled it....I payed a lot of
attention not to harm housing....
Anyway, you asked for resistances per 1 cm; i measured up to
10cm here there are;
1cm= 72 ohms
2cm= 99 ohms
3cm= 111 ohms
4cm= 127 ohms
5cm= 132 ohms
6cm= 161 ohms
7cm= 175 ohms
8cm= 185 ohms
9cm= 219 ohms
10cm= 238 ohms

About taking photos....I have low resolution camera,no use from it
for shooting details...
But coil is made in usuall mannr, nothing special except very nice and
tidy work...very hi-pro...
Thats all from me for this subject...
Regards!

[ivconic]

...

I do not want to start war against manufacturers like Garrett and
others. No i have full respect to those and their copyright.
I want to stop local dealers to raise prices so much and take
advantages on fact that we,ordinary customers are "pushed" to
waste a lot of money at their shops,due fact that there is not
any competitive bargains arround...closer.
I have to go to Germany (nearest) to buy coil or some extras for my
detectors...!? Or to waste huge money at local dealer....
No, i would not do that!
I would hack every available coil and present its accurate datas here
on this forum...until manufacturers start doing something for
us-customers for real...for a change.
First step should be more serious inner control of their dealers and
prices, second should be "first hand" of their products available at
any country without any intercession and further wasting extra money
on some frauds and thieves...

[ivconic]

.....

It tokk me a while to find those photos trough 1200 cd's i have, with various schematics,photos...software...
Here it is, fully cracked and measured....enjoy!

[ivconic]

TX

TX diammeter is 29cm...omited on picture...

[Unregistered]

I do not want to start war against manufacturers like Garrett and
others...
I would hack every available coil and present its accurate datas here
on this forum...until manufacturers start doing something for
us-customers for real...for a change.

Hi,Ivconic,
Are you familiar with this post:


http://www.reviewdetector.ru/index.php?showtopic=4274

[ivconic]

Bravo!

That just justify my previous words..Bravo, nice work!