Coil question?

[sbalio1]

hi green
experimented delta and pim2 and currently felezjoo the same problems with a large reel
I made about 20 coils 75 cm and 100 cm
For the size 100cm, I tried 1 mm of twisted wire in pvc and 1 mm and 0.7 mm and 0.5 mm of magnetic wire
The best result with Magnetic Wire 0.7mm was 1.6 meters on the 20 cm size and 2.30 on the 40 cm size but when I tried a 75 cm coil with a 0.7 mm
I found that the distance was almost the same for a size of 20 cm and 2.20 cm for the size of 40 cm
So I decided to make twisted wires litz to reduce the self-capacity, which allowed to improve the sensitivity of the coil of 75 cm. 1.7m to 1.8 meter for a size of 20 cm and 40 at 2.5 meters.
and with the same thread manufactured. 100 cm reel is less than 1.55 cm for size 20 cm and 2.20 cm for size 40 cm.
the conclusion is I made 75 cm coil with the last wires and I'm looking for another wire for 100 cm coil. because if I use the same wire for the coil 75 and 100 cm the distance does not increase or it will fall '
but in small coils like 20 cm and 30 cm and 40 cm no problem the distance increases with which wire I turn

[sbalio1]

coils 75 cm I built with twisted magnetic wire.

https://www.youtube.com/watch?v=zknlXL6SeYE

https://www.youtube.com/watch?v=M38K2FkCLTM

[Wahyu]

coils 75 cm I built with twisted magnetic wire.

https://www.youtube.com/watch?v=zknlXL6SeYE

https://www.youtube.com/watch?v=M38K2FkCLTM

very good, have you tried it on the ground, buried the target

Thank for share

[sbalio1]

I did not try the distance on the metal under the ground. for 75 cm coil
But I tried coils of smaller size on the ground with metal and almost the distance is the same in the air.The difference is that it must keep a distance for coil on the ground because of the technique of this machine in the balance and the impact of the soil.