TESORO GOLDEN SABRE

[Max]

why calculators serve nothing with DD coils

Hi all,
I've made a small test this afternoon ..tryed to simulate coil halve parameters on coilmaestro software and then realized the real halve using wire...

I already know that aren't good at all for DD so I decided using right that:
a DD halve... that is the same as dimensions and specs of Ivconic's last post

255x137mm , 100turns (the one for TX).

Ok... i've made calculations with coilmaestro and got the impossible value of
4.27mH for a round coil of same area of the halve I mean... obtained for a roundcoil of 206 mm inner diameter, wire 0.25 (30awg) and 100 turns for about 65meters length of wire.

Then I wounded it for real on a prepared wood support with nails... and of course results are quite different.

Got 5.62 mH inductance, giving me a freq. of 14.69Khz on TGS, R=23.1ohm !

Data from Ivconic are really accurate: I got just 90Hz difference from him... but difference is maybe due more to capacitors than wire differences!

So, if the coil is round the calculator is useful but for e.g. D-halve is very worse trying to simulate inductance using same area... error is too big.

I think there would be some general purpose calculator for shaped coils... but never saw so far...

Best regards,
Max

[Max]

Bravo Max! Good job!
But i dont see Faraday cage there? What are you planing to apply?
Al foil or something other?
Regards!

Hi Ivconic,
yes you don't see it cause there isn't at now. It's a test for new numbers turns and alignment.

Of course is needed for the field use. At the moment I'm playing just on test bench with these... (at least for now)... that's why also I need not to waste too much time on these.

Last time I've used mylar/al to shield coils and worked pretty good... last OO12 is really nice with bandidoII but noticed that not so good also with TGS, and don't know why, so I'm doing this experimentation.

BTW you have done very nice work with TGSL housings/pole etc, really nice.

Have you find the LM308 ? Nelson provided a website that sell for 0.59$ each that's interesting price for consistent number of ic.

Kind regards,
Max

[ivconic]

Bravo Max!

Bravo Max! Good job!
But i dont see Faraday cage there? What are you planing to apply?
Al foil or something other?
Regards!

[ivconic]

and no more

[ivconic]

and more 2

[ivconic]

and more...

[ivconic]

more...

[ivconic]

Sharp dressed TGSL!


Finally i got it! I have something to show up with!
These are prepared for TGSL's i am finishing now.
Notice; all of those are copies from originals.
Shaft copied from Troy Shadow shaft but a bit changed,
27cm coil copied from famous Bulgarian coil housing and
Eliptical copied from Garrett GTI Eliptical coil - very nice
housing and hopefully powerfull coil would be!?
Nice work, isnt it?
Only detector housings not prepared yet....Sheesh!

[Max]

Hi,

ops... sorry... I forget writing the secret of assembly:

Che Guevara's cigar is mandatory during assembly...
and also an Ines Rivero Cd...running.

Lot of smoke... from a cuban cigar... kind of a fog!

Hasta Siempre,
Max

[Max]

Then... lesson #1: time is not your friend.

Till that phase took just 33minutes and 17seconds total ! Say my digital/mixed watch.

Am I faster than someone else whose name start with G ???

At least an order of magnitude I think... or maybe 10 orders... and results aren't bad for an half hour work! That's the madness of all the story.

Not as my top of the range... that took 2 hours... about plus other time for container and sealing...of course, but time is money !

Isn't it ?

Kind regards,
Max

[Max]

and to speed up things you always need rubber-insulating-adesive-tape

[Max]

the garden work...

[Max]

my way to OO-coils ??? or just another bricolage work...

(please no questions... just look the dirty work )

[Max]

Hey Max and all friends here. Check this out.

http://www.halted.com/commerce/catalog/product.jsp?product_id=12427&czuid=1189827779700

I think is the shipper place to get LM308. What do you think?
Regards

Nelson

Hi,
price is 0.59$ each.... a very good price for it.

Could be a good source of them for those who need a consistent number at a fair price.

Kind regards,
Max

[nelson]

Hey Max and all friends here. Check this out.

http://www.halted.com/commerce/catalog/product.jsp?product_id=12427&czuid=1189827779700

I think is the shipper place to get LM308. What do you think?
Regards

Nelson