Cool wire size to Vista gold 13"

[Henrikras]

Hey.
I try to found out what wire I have to ordre, to make one size bigger coil. May plan is to make a 13" DD coil, with the Shell from Georgi. Here is the data on the RX only... Its enough fore me to get help with this. ( I hope).
The 11" Stock coil got this; RX 16,7 ohm, 0,32 mm wire AWG28 and it got 3,5 mH. The AWG 28 got R 0.213pr.m.=78m.
One turns is 60 cm and if I use that, I got 130 turns on the RX.
If I use that in the Qiaozhi Calculator / 130 turns and 0.32 wire, I had to go down to Radius 46 mm to get the 3,5 mH.
My 11" stock coil got the radius 65 mm x 105 mm, so its wunder me that I must use radius 46 mm to get it right. ???
If I try to use the AWG 29 and put all the data I got into the Calculator, I think that the AWG 29 is not a good solution going from a 11" up to a 13", the R 16,7 ohm can go to must off..... Think I still must to use AWG 28.

What to do experienced coils makers say to all this !
it would Be a great help all information you can give.

Thanks to Qiaozhi to make this Calculator.

Henrik.

[Henrikras]

As a followed to this first post.
Is there something about this ! If I take the different between the min.radius and the max.radius (65-105) = 40 mm. And dividing this with 3 = 13,3 mm, and add this to the min radius (65+13) = 78 mm.
This 78 mm will appoxly be the coils real number and scale. If I then use this into the Qiaozhi Calculator, I got close to twice the number of the induction (7,0 mH) where the my stock coil is measured to 3,5 mH. If I divide all the other test results with 2, and try other types of AWG this is what I come to: Use the AWG 27,5 the R will get close to this 16,7 ohm I need.
This was my results to make one size (RX) of a 13" coil Appoxly. AWG27=15ohm. AWG27,5=17ohm. AWG28=19ohm. AWG29=23ohm
all used the same mH (7,0 divided with 2=3,5 mH.)

What do you think ???

My plan without any help from you in here, is to ordre AWG 27,5 to the RX, and ordre the Stock used AWG22 to the TX, making this 13"

Thanks.
Henrik.

[Henrikras]

Made ny first 13" RX this evening ! Tryed AWG 27 and with 117 turns it got 16,1 ohm...BUT it went up to 7,8 mH.( Stock 3,5mH )
All my teory isn't working and It is impressive how the mH goes up, when the size of coil goes up.
Need some thinner AWG to use less turns. This is learning by doing. ( smile)
Henrik.

[Carl-NC]

Try 78 turns with the 27awg, don't worry so much about the R.

[porkluvr]

The AWG 28 got R 0.213pr.m.=78m. ....

What to do experienced coils makers say to all this !
it would Be a great help all information you can give.

Henrik.

I'm maybe not the experienced coil maker you want, but I really want to ask you this:
Can you understand what you wrote? I know, I don't.

What do you mean by " R 0.213pr.m.=78m "?? Seriously.

I'm not trying to be nasty, but your question(s) only get(s) worse. You go on about 27.5AWG, 28AWG, 29AWG, etc. and etc. but, who can follow your meaning? If you really want some quality help, then please PROOF-READ and correct your message if it appears to not make sense, and please keep your questions easy to digest.

Edit: Carl to the rescue. HOORAY Carl!
(and no I am not being facetious)

[porkluvr]

Made ny first 13" RX this evening ! Tryed AWG 27 and with 117 turns it got 16,1 ohm...BUT it went up to 7,8 mH.( Stock 3,5mH )
All my teory isn't working and It is impressive how the mH goes up, when the size of coil goes up.

Henrik.

Measure the length of wire around a single "DD" section, and call that Circumference.
Plug the number for circumference into formula:
Diameter = Circumference/3.14.

So, then you will have a number for Diameter, to plug into any standard coil calculator.

This is not 100% accurate but should give you a reasonably good starting point. (You hopefully will not ever again produce a coil that measures double what you had expected.)

You already knew the circle formula, but adapting a DD coil to a coil calculator (designed for a circular coil) may not have been obvious.

I hope that I did not overly complicate this.

[Henrikras]

[QUOTE=porkluvr;169141]I'm maybe not the experienced coil maker you want, but I really want to ask you this:
Can you understand what you wrote? I know, I don't. YOUR RIGHT, try to change that in the feature.

What do you mean by " R 0.213pr.m.=78m "?? Seriously. THIS is the resistor at AWG28 one meter =R 0.213

You go on about 27.5AWG, 28AWG, 29AWG, etc. and etc. but, who can follow your meaning? SORRY I can see your point.

Thanks to your both. I would try what your both said.
Henrik